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- Hollow screw design - Allows more fuel flow to the pump nozzle than a standard solid screw.
- Useful with larger nozzles - Recommended when using 0.040 inch or larger accelerator pump nozzles.
- Genuine service part - Suitable for accelerator pump tuning and rebuild work.
Holley 121-7 is a hollow discharge nozzle screw for accelerator pump service and tuning. Holley notes that the hollow screw should be used when fitting 0.040 inch or larger pump nozzles so the nozzle remains the limiting restriction in the fuel supply path. It is a useful small part to keep on hand when tuning accelerator pump response.
Specifications
- Part Number: 121-7
- Brand: Holley
- Product Type: Hollow discharge nozzle screw
- Recommended Use: For 0.040" or larger accelerator pump nozzles
Part 121-7 is a Holley hollow discharge nozzle screw for accelerator pump tuning and service work. This Holley carburettor part is recommended with 0.040 inch or larger pump nozzles to improve fuel flow to the nozzle.
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Returns and exchanges may be accepted within 30 days of receiving your order, provided items are in saleable condition, include original packaging and proof of purchase. Returns are assessed case by case.
Change-of-mind returns, incorrectly ordered items, clearance items and products damaged through misuse or wear and tear are not returnable. Please contact us before sending back any item, especially for warranty claims.