Holley Replaceable Air Bleed Drill - Size: 0.057 20-OTL-NB-3XL Fits 2 and 4 wheel

Fits 2 and 4 wheel drive models and all wheelbases including Crew Cab

1986-1992 Mercury Cougar

ensuring you get the most from your high performance engine at higher RPMs

Carburetor Jet

How do you get a lot of area into a compact in-line filter

Holley Replaceable Air Bleed Drill - Size: 0.057 20-OTL-NB-3XL Fits 2 and 4 wheelHolley Replaceable Air Bleed 126 57 10 Drill Size 0. 057 10 Per Package 10 Per Package 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