
Ideal. The engine I bought this for was a 1999 GMC Jimmy 4.3L. or nylon. The Felpro seal has a metal core. They tolerate heat and cold. valve cover, upper intake,. and Throttle Body Injector Gaskets are of quality material and fit well. They easily cost $10 to $20 more than the competition and offer them at a lower price point. I viewed the purchase as if I were buying insurance for a future mechanical bill. Replacing these seals takes quite a long time. It's money worth spending