{"title":"Choke \u0026 Vacuum Secondary Parts - Holley Tuning Parts","description":"","products":[{"product_id":"holley-135-4-vacuum-secondary-diaphragm","title":"Holley 135-4 Vacuum Secondary Diaphragm","description":"\u003cdiv class=\"full_description\"\u003eVacuum Secondary Diaphragm. \u003cmeta charset=\"utf-8\"\u003eRod length is 2.054\"\u003cbr\u003e\u003cbr\u003eFits Carburetor Number:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli class=\"full_description\"\u003eR1849-50\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR3310\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR4452-1\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR4548\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR6520\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR6619\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR6909-19-79-89\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR7002-04-05-06-09-10-53-1\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR7154\/R7351-97\u003c\/li\u003e\n\u003cli class=\"full_description\"\u003eR7855\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"attributes-table\" cellspacing=\"0\" style=\"width: 100.088%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eBrand\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eHolley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eCategory\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eAir and Fuel Delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eDiaphragm Material\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eViton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eEmission Code\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eGrade Type\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eViton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eMounting Hole Quantity\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003ePart Type\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eCarburetor Accelerator Pump Diaphragm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eVacuum Secondary Diaphragm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eSub Category\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eCarburetion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003eLimited 90 Day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003eUPC\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003e090127026885\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\" style=\"width: 47.3404%; text-align: left;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 52.6596%;\"\u003e135-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":42064868212833,"sku":"HOL-135-4","price":25.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/135-4-Vacuum-Secondary-Diaphragm-img1.jpg?v=1742448144"},{"product_id":"holley-20-13-secondary-diaphragm-spring-kit","title":"Holley 20-13 Secondary Diaphragm Spring Kit","description":"\u003cdiv class=\"full_description\"\u003eAllows changing the rate of the secondary operating ranges\u003c\/div\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003eSecondary Diaphragm Spring Kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"attributes-table\" cellspacing=\"0\" style=\"width: 100.088%; height: 333.095px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; text-align: left; height: 19.5938px;\"\u003eAdjustable Length\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eBrand\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eHolley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eCategory\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eAir and Fuel Delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eAssorted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eEmission Code\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eGrade Type\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eLength\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eAssorted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003ePart Type\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eCarburetor Accelerator Pump Spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eVacuum Spring Assortment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eQty\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eSpring Force\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eAssorted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eSub Category\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eHardware, Fasteners and Fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eLimited 90 Day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eWire Diameter\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003eAssorted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003eUPC\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003e090127207444\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.7771%; height: 19.5938px; text-align: left;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd class=\"data\" style=\"width: 44.2229%; height: 19.5938px;\"\u003e20-13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":42064871227489,"sku":"HOL-20-13","price":45.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/Holley-20-13-Secondary-Diaphragm-Spring-Kit.jpg?v=1742448464"},{"product_id":"electric-choke-conversion-kit-suits-holley-350-320-carby-2300-model-carburettors","title":"Electric Choke Conversion Kit Holley 320 350 465 600 750 Carburettors","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectric Choke Conversion Kit\u003c\/strong\u003e – Designed for Holley 2300 series and 4150\/4160 series carburettors including 320 350 465 600 750 CFM models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves Cold Starts\u003c\/strong\u003e – Replaces manual choke for consistent, reliable cold engine performance and warm-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e – Includes mounting hardware and wiring for a straightforward installation on most 2300 model Holley carburettors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis electric choke kit is ideal for upgrading Holley 2300 model carburettors, including 350 to 750 CFM carbs. Also upgrades 4150\/4160 series carbs. Whether you're restoring a classic or refining your street build, this kit improves cold-start drivability and eliminates manual choke hassles. Built to OEM quality and backed by a manufacturer warranty.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptions Available:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e6mm Choke shaft with matching mounting plate\u003c\/li\u003e\n\u003cli\u003e8mm Choke shaft with matching mounting plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSelect the correct option based on your existing carburettor shaft size to ensure proper fitment.\u003c\/p\u003e","brand":"Gator","offers":[{"title":"6mm Shaft \u0026 Plate","offer_id":42450173231201,"sku":"HC85K-6","price":125.0,"currency_code":"AUD","in_stock":true},{"title":"8mm Shaft \u0026 Plate","offer_id":42450173263969,"sku":"HC85K-8","price":125.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/IMG_2822_HolleyElectricChokeConversionKit-HC85K-6.png?v=1758000114"},{"product_id":"holley45-225s-manual-choke-conversion-kit-shiny-2300-4150-4160-carbs","title":"Holley 45-225S Manual Choke Conversion Kit (Shiny) 2300, 4150, 4160 Carbs","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual Choke Conversion Kit\u003c\/strong\u003e – Converts electric or automatic choke Holley carbs to manual hand choke operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes All Required Parts\u003c\/strong\u003e – Complete with linkage, both arm types, cable bracket, lead ball vacuum plug, mounting hardware, and instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShiny Finish\u003c\/strong\u003e – Suits classic or performance engine bays with polished detailing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis Holley Manual Choke Conversion Kit is a simple and effective solution for switching from automatic or electric choke to a manual hand choke. The kit includes both the straight arm and the bent arm. Ideal for performance tuning or improving cold-start control, especially on older engines or modified setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburettor Models:\u003c\/strong\u003e Holley 2300, 4150, and 4160\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eList Numbers:\u003c\/strong\u003e 0-1850, 0-3310, 0-7448 (and similar models with removable choke housing)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePerfect for hot rods, street machines, or off-road applications where manual control over fuel delivery during cold starts is preferred.\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":42464988102753,"sku":"HOL-45-225S","price":95.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/IMG_2937_Holley-45-225S-manual-choke-conversion-kit.png?v=1758544979"},{"product_id":"holley-tri-power-six-pack-secondary-diaphragm-135-6","title":"Holley Tri-Power Mopar Six Pack Secondary Diaphragm 135-6","description":"\u003cul\u003e\n\u003cli\u003eDirect replacement vacuum secondary diaphragm for Holley Six Pack and Tri-power outer carburettors\u003c\/li\u003e\n\u003cli\u003eFits both front and rear outboard carburettors on Mopar 440 and 340 engines\u003c\/li\u003e\n\u003cli\u003eAlso suits GM Chevrolet Tri-power systems including Corvette applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis vacuum secondary diaphragm is designed for the outboard carburettors used in Holley Tri-power and Six Pack systems. On these 3x2 arrangements, the centre carburettor handles primary running while the front and rear units operate as vacuum-controlled secondaries, opening progressively under load. A faulty diaphragm is one of the most common causes of poor Six Pack performance, hesitation, or failure of the outer carburettors to engage. This replacement unit restores proper actuation on both the front and rear carburettors and is suitable for Mopar Six Pack engines as well as GM Chevrolet Tri-power applications including late 1960s Corvettes. It matches all known Holley outboard carburettor list numbers that use this style of vacuum pod.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct: Holley Tri-Power \/ Six Pack Secondary Diaphragm\u003c\/li\u003e\n\u003cli\u003eApplication: Outboard (front and rear) vacuum-operated carburettors\u003c\/li\u003e\n\u003cli\u003eVehicle Fitment: Mopar 440 and 340, GM Chevrolet Tri-power including Corvette\u003c\/li\u003e\n\u003cli\u003eCarburettor Operation: Vacuum secondary\u003c\/li\u003e\n\u003cli\u003eCompatible Holley List Numbers: R3659, R4365-1, R4382-1, R4383-1, R4393-2, R4394-2, R4671, R4672, R4789, R4790\u003c\/li\u003e\n\u003cli\u003eFuel Type: Petrol (gasoline)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInclusions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement vacuum secondary diaphragm\u003c\/li\u003e\n\u003cli\u003eCorrect sealing lip for Holley outboard pods\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":42680020336737,"sku":"HOL-135-6","price":75.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/hol-135-6-tripower-secondary-diaphragm-2.jpg?v=1765366782"},{"product_id":"holley-quick-fuel-47-1qft-electric-choke-cap-cover-h85","title":"Holley Quick Fuel 47-1QFT Electric Choke Cap Cover H85","description":"\u003cul\u003e\n  \u003cli\u003eElectric choke unit restores reliable cold-start operation on compatible carburettors.\u003c\/li\u003e\n  \u003cli\u003eSteady choke opening helps prevent loading up when cold and improves warm-up drivability.\u003c\/li\u003e\n  \u003cli\u003eA smart replacement when the original choke heater or mechanism is worn or missing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eA working electric choke makes a big difference to everyday drivability because it controls the choke blade as the engine warms, allowing a rich cold start but moving to a normal mixture smoothly. This unit is intended for the applications listed in the title and reference, and it is an ideal replacement when the original choke is sticking, damaged or incomplete. Take a moment to set the choke and verify fast idle speed after installation.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Carb Parts\u003c\/li\u003e\n  \u003cli\u003ePart reference: 47-1QFT\u003c\/li\u003e\n  \u003cli\u003eApplication: Electric choke unit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Carb Parts","offers":[{"title":"Default Title","offer_id":42748809445473,"sku":"H85","price":48.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/H85_Holley_Quick_fuel_47-1QFT_Electric_Choke_Cap_Cover-img2.png?v=1763876746"},{"product_id":"holley-390-465-570-600-670-750-20-53-vac-sec-connecting-link-split-pin-carby","title":"Holley 390 465 570 600 670 750 20-53 vac sec connecting link split pin Carby","description":"\u003cul\u003e\n\u003cli\u003eVacuum secondary connecting rod links the throttle shafts correctly so the secondaries open smoothly.\u003c\/li\u003e\n\u003cli\u003eA fresh rod and split pin helps remove slop from worn linkage and improves consistency.\u003c\/li\u003e\n\u003cli\u003eDesigned to suit Holley vacuum secondary carburettor series listed in the reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHolley vacuum secondary carbs rely on a simple mechanical link to keep everything moving in the right order, and wear or missing hardware can lead to inconsistent secondary opening and a soft throttle feel. Replacing the connecting rod is an easy fix during a service, especially if you are already working on diaphragms, springs or secondary tuning. Match the rod style to your carb family and verify free movement after fitting.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Holley\u003c\/li\u003e\n\u003cli\u003ePart reference: 20-53\u003c\/li\u003e\n\u003cli\u003eApplication: Vacuum secondary throttle connecting rod\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":42748809805921,"sku":"HOL-20-53","price":22.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/hol-20-53.jpg?v=1768305159"},{"product_id":"holley-choke-fast-idle-cam-red-4150-4160-carby-carburettor-electric-auto-choke","title":"Holley Choke Fast Idle Cam Red 4150 4160 Carby Carburettor Electric \/ Auto Choke","description":"\u003cul\u003e\n\u003cli\u003eFast idle cam helps restore correct cold-idle speed and step-down behaviour on Holley carburettors.\u003c\/li\u003e\n\u003cli\u003eCorrect cam profile supports smoother warm-up and better throttle response when the engine is cold.\u003c\/li\u003e\n\u003cli\u003eA genuine-style replacement is a handy service part for worn or missing cams.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe fast idle cam works with the choke linkage to hold the throttle slightly open when cold, then step the idle speed down as the choke warms up. If the cam is worn, cracked or missing the engine can idle too high, too low or behave inconsistently during warm-up. Fitting a replacement is a simple fix that can make a noticeable difference in cold-start manners.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Holley\u003c\/li\u003e\n\u003cli\u003ePart reference: 45-223, 45-224\u003c\/li\u003e\n\u003cli\u003eApplication: Choke fast idle cam\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":42748809936993,"sku":"HOL-45-376","price":25.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/hol-45-376_holley_fast_idle_cam.jpg?v=1768219048"},{"product_id":"holley-vacuum-secondary-diaphragm-135-2","title":"Holley Vacuum Secondary Diaphragm 135-2","description":"\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine vacuum secondary replacement\u003c\/strong\u003e - Restores proper vacuum secondary operation on listed Holley carburettors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect service part\u003c\/strong\u003e - Correct replacement for carburettor numbers R1848-1 R3220 R6299-1 R8007 and R3045.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUseful rebuild item\u003c\/strong\u003e - Ideal when servicing ageing or damaged diaphragm assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eHolley 135-2 is a vacuum secondary diaphragm used on selected Holley carburettors. Replacing a worn diaphragm helps restore smooth secondary opening and consistent drivability. It suits the carburettor numbers listed by Holley and is best matched by part number before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHolley carburettor R1848-1\u003c\/li\u003e\n  \u003cli\u003eHolley carburettor R3220\u003c\/li\u003e\n  \u003cli\u003eHolley carburettor R6299-1\u003c\/li\u003e\n  \u003cli\u003eHolley carburettor R8007\u003c\/li\u003e\n  \u003cli\u003eHolley carburettor R3045\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePart Number: 135-2\u003c\/li\u003e\n  \u003cli\u003eBrand: Holley\u003c\/li\u003e\n  \u003cli\u003eProduct Type: Vacuum secondary diaphragm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003ePart 135-2 is a Holley vacuum secondary diaphragm for selected Holley carburettors. Suits carburettor numbers R1848-1 R3220 R6299-1 R8007 and R3045 for vacuum secondary service and rebuild work.\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":44017712496737,"sku":"HOL-135-2","price":35.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/Holley-135-2-Vacuum-Secondary-Diaphragm-1.jpg?v=1776348851"},{"product_id":"holley-quickchange-vacuum-secondary-housing-cover-20-59","title":"Holley Quickchange Vacuum Secondary Housing Cover 20-59","description":"\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFaster spring changes\u003c\/strong\u003e - Gives easier access to the vacuum secondary spring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-change design\u003c\/strong\u003e - Reduces the time needed to tune the vacuum secondary system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x 4 bbl application\u003c\/strong\u003e - Built for compatible vacuum secondary 4-barrel carburettors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eHolley 20-59 is a quickchange vacuum secondary housing cover for compatible 1 x 4 bbl carburettors. It makes vacuum secondary spring changes easier by providing access without removing the full housing assembly each time. This is a useful tuning upgrade for cars that need repeated secondary spring adjustment.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible vacuum secondary 1 x 4 bbl carburettor applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePart Number: 20-59\u003c\/li\u003e\n  \u003cli\u003eBrand: Holley\u003c\/li\u003e\n  \u003cli\u003eProduct Type: Quickchange vacuum secondary housing cover\u003c\/li\u003e\n  \u003cli\u003eApplication: Cover-diaphragm housing 1 x 4 bbl\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003ePart 20-59 is a Holley quickchange vacuum secondary housing cover for compatible 1 x 4 bbl carburettors. This Holley vacuum secondary tuning part gives easier access to the spring for quicker adjustment changes.\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":44017712595041,"sku":"HOL-20-59","price":55.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/Holley-20-59-Quickchange-Vacuum-Secondary-Housing-Cover-1.jpg?v=1776348856"},{"product_id":"quick-fuel-quick-change-secondary-diaphragm-and-spring-kit-38-1000qft","title":"Quick Fuel Quick Change Secondary Diaphragm and Spring Kit 38-1000QFT","description":"\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick spring access\u003c\/strong\u003e - Designed for easier vacuum secondary spring changes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAssorted springs included\u003c\/strong\u003e - Useful for tuning secondary opening rate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTuning-friendly design\u003c\/strong\u003e - Suits repeat adjustment work without full housing removal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eQuick Fuel 38-1000QFT is a quick change secondary diaphragm and spring kit for vacuum secondary tuning. It includes assorted springs and is intended to make repeated spring changes simpler. This is a practical tuning part for vehicles where secondary opening rate needs adjustment.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePart Number: 38-1000QFT\u003c\/li\u003e\n  \u003cli\u003eBrand: Quick Fuel Technology\u003c\/li\u003e\n  \u003cli\u003eProduct Type: Quick change secondary diaphragm and spring kit\u003c\/li\u003e\n  \u003cli\u003eSpring Pack: Assorted springs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003ePart 38-1000QFT is a Quick Fuel quick change secondary diaphragm and spring kit for vacuum secondary carburettor tuning. This spring kit includes assorted springs for setting secondary opening rate on compatible applications.\u003c\/p\u003e","brand":"Quick Fuel Technology","offers":[{"title":"Default Title","offer_id":44017712660577,"sku":"38-1000QFT","price":85.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/Holley-38-1000QFT-Quick-Change-Secondary-Diaph-Spring-Kit-1.jpg?v=1776348859"}],"url":"https:\/\/carbparts.com.au\/collections\/choke-vacuum-secondary-parts-holley-tuning-parts.oembed","provider":"Carb Parts","version":"1.0","type":"link"}