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Your cart is empty.COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. 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 seal is used. The umbrella seals require no machining, but with the seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don't forget the valve seals.
byrd
Reviewed in the United States on February 2, 2025
works great
Robert P Stelpstra
Reviewed in the United States on April 7, 2024
special tools and compressed aid needed.
levi
Reviewed in the United States on August 10, 2023
Event though these didn't fit my particular heads they still get a 5 star cause it was what it was supposed to be. I just didn't do my homework on my heads first.
Patricia Vargo
Reviewed in the United States on December 22, 2022
fits 11/32 stems and fits inside stock springs..keeps the oil out from the guides ..better than the o rings....best replacement seal ..
Bruce Jenkins Big Wrench Restoration LLC
Reviewed in the United States on February 18, 2021
Perfect for SBC aluminum heads
Connor V.
Reviewed in the United States on January 21, 2021
COMP Cams is a quality product and quick Amazon Prime delivery. Other Amazon seller/vendor sllooow delivery by USPS never arrived!
Braindeadlavacake
Reviewed in the United States on December 31, 2020
Gift
david bebenek
Reviewed in Canada on January 5, 2019
easy to install worked great
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