Holley Main Jets (2) - 56 Earl's 10 AN Male to 3/8

10 AN Male to 3/8 in NPT Male Swivel

Standard Rotation

power and fuel distribution throughout the mid and upper rpm range

2-1/2 in Piston GM Metric Caliper

160 in Bore

Holley Main Jets (2) - 56 Earl's 10 AN Male to 3/8Set of two carburetor main jets. 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 include performance fuel pumps, intake manifolds and