Holley Main Jets (2) - 77 Helmet Shield Fits Arai: GP-6

Fits Arai: GP-6

Fits major brand oil pumps

Door Bar Mount

2001-2004 GMC Sierra 2500 HD

Adjustable button height sets with a custom lock nut

Holley Main Jets (2) - 77 Helmet Shield Fits Arai: GP-6Set 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