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Speedmaster Steel main girdles are machined from 1045 steel
Speedmaster freeze plugs will not rot out
The Speedmaster GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited
The outer case is made from 8620 Chrome-Nickel-Moly steel and the case hardened for long life
maintenance-free operation
12" x 2" Oval Plain Polished Aluminum Air Cleaner Kit - Red Filter Speedmaster Steel main girdles areSpeedmaster's air cleaners not only look great, they also provide your engine with cleaner air for better performance. They're available in round and oval styles, and you can choose between plain polished, straight ball milled, and flame ball milled finishes.
