COMP Cams Valve Seals 11/32in PTFE W/.50

COMP Cams Valve Seals 11/32in PTFE W/.50

Marsoni

M251S

$38.88

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

COMP Cams Valve Seals 11/32in PTFE W/.50COMP Cams offers a complete line of valve stem Seals, from the stock GM "O Ring" to the positive stop PTFE Seal. These Seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The "O Ring" Seals use the standard retainer and oil splash shield. The umbrella Seal is normally used when a larger than stock diameter spring is used, in the case of a double spring, the positive stop PTFE Seal is

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Perfect fit for my 23 MDX, easy to install and great value for money. Dealership quoted me a ridiculous amount to replace the air filter. I would recommend everyone to DIY. Bought it together with the cabin air filter. Will definitely keep an eye on longevity. These are washable so probably wont need to buy for at least a couple years.

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Reviewed in the United States on November 10, 2025