MMR Bronze valve guides have a natural lubricative property that prevents valve wear and reduces friction for more HP. Ultra high quality bronze manganese material. Made in USA. These are the highest quality guides available for your Ti-VCT engine and are the only guides tested beyond 10,000rpm and 3500HP!!
*Tapered high flow design.
*Direct replacement.
*Fits factory or aftermarket seals.
*Compatible with all factory and Aftermarket valves
*Fits all 5.0, BOSS, 5.2 and GT350 and GT500 Cylinder heads 2011-2023
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