Holley Air Cleaner Spacer 1-3/8" 74400913 Dyno tests showed gains of

Dyno tests showed gains of 5 hp and 9 ft-lbs

Featuring a unique angled chest zipper and button enclosure that provides a large area on the front of the suit for displaying sponsors

3 rated Fitted Balaclavas are the softest and most fitted head socks on the market today

Blue Stripe Cork/Lam Steel Core Valve Cover Gaskets resist being blown out or drawn in under race conditions

Holley Air Cleaner Spacer 1-3/8" 74400913 Dyno tests showed gains ofProvides extra clearance for throttle linkage, etc. 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,