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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.
Megascott
2025-08-14 12:32:38
Works well and they last a long time.
John Terpening
2025-08-07 17:56:00
THESE MAY NOT WORK ON YOUR HEADS UNLESS YOU HAVE THE VALVE GUIDE BOSES MACHINED. The seals seem to work fine; I have not ran the engine yet. If you use the plastic sleeve that comes with the seals to install them, they are easy to install without taking them apart.
jerkynic
2025-07-28 15:23:23
Top and bottom springs on these seals makes for a firm grab of the head. Others before this were pulling off the head and moving with the valve stem. These worked great for me.
Customer
2025-07-15 17:36:23
super fast shipping, great price.
pam
2025-05-23 18:50:40
Good seals, just make sure you practice with the old ones first, or you gonna have to buy more, oh also p/u and installer popping them on is tough until you get the feel for it, tip: take the small spring off first before popping on, good luck
P. Guillotte
2025-02-20 16:16:15
these are not durable. Fall apart when trying to put them on the valves. Very flimsy material. I can not in all honesty recommend them. Wasted my money and time. In my opinion they are less than useless.
wp
2025-01-20 12:04:25
Works well
Andy
2025-01-19 10:38:58
Really cheap, go with the Comp Cams Viton ones. Much better and easier to install with just a dead blow hammer.
DANIEL COROADO
2025-01-15 16:39:25
Should be named Amazon Performance parts
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