Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black

Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black

Marsoni

M251S

$12.31

Get it in 3 business days with 1 day shipping. Friday, May 29

Prothane 65-95 GM Rear Upper Coil Spring Isolator - BlackProthane 65 95 GM Rear Upper Coil Spring Isolator Black This Part Fits: Year Make Model Submodel 1971 1973 Buick Centurion Base 1973 1977,1980 1981 Buick Century Base 1975 1979,1982 1987 Buick Century Custom 1976 Buick Century Indianapolis 500 Pace Car 1978 1987 Buick Century Limited 1973 1975 Buick Century Luxus 1984 Buick Century Olympia Limited 1975 1979 Buick Century Special 1978 1981 Buick Century Sport 1983 1986 Buick Century T Type 1968

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I decided to try LIQUI MOLY Valve Clean to help keep the intake valves clean and maintain engine performance, and I’m really impressed with the results. After adding it to the fuel tank and running through a full tank of gas, the engine felt noticeably smoother and more responsive. It’s very easy to use—just pour it into the fuel tank as directed. I also like that it’s from LIQUI MOLY, a brand known for high-quality automotive additives. While it’s not a miracle fix for serious mechanical issues, it’s a great preventative maintenance product to help reduce deposits and keep the engine running efficiently. I plan to use it periodically as part of my regular maintenance routine.

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Reviewed in the United States on March 7, 2026

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Jack

Draper, US

★★★★★ 5

Must have.

Size: 150 ml, Pack of 1

Very good product, works great.

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Reviewed in the United States on May 7, 2026

Verified Purchase

Robert Cordrick

Los Angeles, US

★★★★★ 5

Good for routine engine care

Size: 150 ml, Pack of 1

Definitely not a cure-all for major mechanical problems, but it works well as a preventative step. It helps lessen deposits and keeps the engine running smoothly. I intend to use it regularly as part of my maintenance schedule to keep everything in good shape.

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Reviewed in the United States on April 21, 2026

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Susie

Waukegan, US

★★★★★ 5

Worth the money

Size: 150 ml, Pack of 1

Great line of car products. My BMW gets better gas mileage when I use it regularly.

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Reviewed in the United States on April 1, 2026