Holley Metering Block Gaskets (10pk) 10231CP 550 in Spring OD

550 in Spring OD

With products for circle track

Light Smoke or Dark Smoke in standard and fog free variations

Kits are recommended for preloaded spring assemblies or when springs require adjustment while they are under pressure

Holley Metering Block Gaskets (10pk) 10231CP 550 in Spring ODFor Models 2300, Model 4150 Model 4160 and Model 4500 without Intermediate Circuit Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also