Cometic Gasket CG Valve Stem Seals - Cometic Positive Ring And Band 8 X 12.3 X 12 X 17 Viton

Part #: 3164V

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Description:
Cometic's Positive Ring and Band valve stem seals measure 8 x 12.3 x 12 x 17 and are made from Viton, a material well-suited to the heat and chemical exposure found in performance engine applications. Each seal is street and track tested, including dyno validation.

FAQs

Q: How do you install valves?
A: Valves require headwork and should be left to the pros. While replacing valves, valve guides, retainers, valve springs and camshafts should all be considered for upgrades at the same time.

Q: What are valves? Why buy valves?
A: Valves are used to let a mixture of air and fuel into a cylinder and allow exhaust gases to get out. Each cylinder has at least two valves each, multi-valve engines have more, often four per cylinder. Upgraded head valves are able to withstand more heat from nitrous oxide use and turbo/supercharger use, so it's an excellent upgrade for people looking for added compression without sacrificing any reliability.

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