★★★★★ 5
Quality Champion Brand plugs
Repeat customer. Quality Champion product worth the extra $
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Reviewed in the United States on April 12, 2026
COMP Cams Guide Plate Olds 3/8
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
COMP Cams Guide Plate Olds 3/8Hardened and black oxide coated for durability, this flat one piece guide plate is designed for Oldsmobile 350 455 engines with 5 16" studs and 3 8" pushrods. Catalog User 1 This Part Fits: Year Make Model Submodel 1975 Buick Apollo Base 1975 Buick Apollo SR 1977 Buick Century Base 1977 Buick Century Custom 1976 1979 Buick Electra 225 1975 Buick Electra Custom 1980 1987 Buick Electra Estate Wagon 1975 1984 Buick Electra Limited 1978 1984 Buick Electra
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- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.8 ★★★★★
Based on 68 reviews
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Product Reviews
★★★★★ 5
Original OEM equipment
They seem to be the copper plug required for this engine. Runs great and as it should.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Genuine Champion Spark plugs
Genuine Champion Spark plugs at a great price!
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Reviewed in the United States on December 7, 2025
★★★★★ 5
Go For It.
Good Plug
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Champion RC12YC Spark Plug
Worked perfectly for a Lawnboy Model 10646 lawnmower.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
