★★★★★ 5
DIY forget the dealer
DIY value
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Reviewed in the United States on March 25, 2026
COMP Cams Guide Plate Olds 5/16
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
COMP Cams Guide Plate Olds 5/16flat, 1 piece, non adjustable. For 5 16" diameter pushrods and 5 16" Rocker Studs. Fits Oldsmobile 350 455 c. i. d. V8 using stereo lithography Techniques for an accurate fit. Feature exact Stud placement and rounded contact points. Necessary for high lift spring pressure environments of performance engines. Hardened and black oxide finished. No machine work required with Part #4542 16 Studs. Catalog User 1 This Part Fits: Year Make Model Submodel
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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★★★★★ 5
Works
Decent quality, somewhat flimsy, not bad for the price. Fit perfectly, correct thickness.
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Reviewed in the United States on December 17, 2025
★★★★★ 5
great and the price is right
Fits perfectly and was very reasonable compared to the Oil change place.
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Good product
It fits like it is supposed to.
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Reviewed in the United States on August 19, 2025
★★★★★ 5
Easy to install.
Works as intended. Easy to install.
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Reviewed in the United States on July 13, 2025
