(10Sets) 4150 Carburetor Needle and Seat Gaskets, 1008-777 Top and 1008-776 Bottom Gasket Compatible With Holley Adjustable Needle and Seat Carburetors 2300 4150 4160 4500
[Applicable range] Compatible with Holley carburetors with adjustable needle valves and valve seats 2300/4150/4160/4500; not suitable for fixed needle valves/valve seats
[Durable Material] Made of composite fiber material, it is resistant to fuel and high temperature. It maintains stable sealing performance under vibration and thermal cycle environment, reducing the risk of leakage
[Installation] This set includes 10 sets, including 10 top gaskets (1008-777) and 10 bottom gaskets (1008-776), for routine maintenance and replacement
[Double Seal] The top gasket provides a subtle spring-loaded seal at the adjusting nut, preventing thread leakage and maintaining adjustability. The bottom gasket seals and distributes force evenly at the valve seat interface, stabilizing the oil level and reducing spillage
[Installation Recommendation] It is recommended to replace both gaskets simultaneously. Clean the contact surfaces before installation and pre-tighten evenly and appropriately. Recheck for leaks after the first thermal cycle. Reusing old gaskets is not recommended to prevent failure due to insufficient rebound