{"product_id":"valve-stem-oil-seals-446-guide-size-5-16-valve-size-8-pcs-of-507-8-pcs-of-508-small-o-d-for-triple-spring-co509-16","title":"Valve Stem Oil Seals .446\" Guide Size, 5\/16\" Valve Size (8 Pcs of #507 \u0026 8 Pcs of #508 (Small O.D for Triple Spring)) (CO509-16)","description":"\u003cp\u003eComp Cams offers a complete line of valve stem seals, 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, and in the case of a double spring, the positive top Teflon seal is used. Smaller diameter Viton seals are also available for triple spring applications. Both the O-ring and the umbrella seals require no machining , but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special cutter.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":44718983545143,"sku":"CO509-16","price":111.25,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/61844.jpg?v=1780420108","url":"https:\/\/enginemaster.com.au\/products\/valve-stem-oil-seals-446-guide-size-5-16-valve-size-8-pcs-of-507-8-pcs-of-508-small-o-d-for-triple-spring-co509-16","provider":"Engine Master","version":"1.0","type":"link"}