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Engine Works Polylocks

Engine Works rocker arm and stud girdle polylocks are manufactured from high-grade alloy steel, finished in black oxide, and feature cold-formed 12-point reduced heads for quick R and R. The bottom of each one incorporates a .550 in. step that centers the polylock on the trunnion of the rocker arm, and they are available in both 7/16 in. and 3/8 in. sizes. The stud girdle polylocks have a .950 in. long shank. Choose the size you need.

Not Yet Reviewed

$33.71

Trick Flow® Valve Cover Adapter Replacement Studs

If you are using valve cover adapters that allow you to run early-style valve covers with late model Chevrolet centerbolt heads, then there's a chance that you may need replacement hardware at some point in time. If that's the case, Trick Flow® has you covered! These valve cover adapter replacement studs by Trick Flow® are for use with Trick Flow® valve cover adapter kits to help increase valvetrain stability and improve overall performance.

5.0 out of 5 stars ( 7 )

$18.99

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