Supertech VW/Audi 7mm Viton Exhaust Valve Stem Seal - Set of 8
Supertech VS-VW7E-8 – 7 mm Viton® Exhaust Valve Stem Seal Set (8 pcs)
Supertech’s VS-VW7E-8 kit provides eight high-temperature Viton® stem seals for engines that use 7 mm valve stems and 9.8 mm guide outside diameter. Built to withstand elevated exhaust-gas temperatures, they maintain oil control and durability in performance street or track environments.
Key Features
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High-temp Viton® elastomer resists hardening and retains elasticity under prolonged heat exposure—ideal for turbocharged or high-RPM engines.
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Precision fit on 7 mm stems and 9.8 mm guides ensures reliable sealing and minimized oil consumption.
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Compact 13.2 mm outer diameter eases installation in tight cylinder-head spaces.
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Sold as a complete set of 8 seals—enough for every exhaust valve in a four-cylinder head.
Technical Specifications
| Parameter | Value |
|---|---|
| Application | Exhaust valve stem seal |
| Material | Viton® fluoro-elastomer |
| Stem diameter | 7 mm |
| Guide O.D. | 9.8 mm (.385″) |
| Seal O.D. | 13.2 mm (.520″) |
| Quantity | 8 seals |
Engine Compatibility (sample)
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VW/Audi: 1.8 16V KR/PL, 2.0 16V 9A/ABF, 2.2 20V 3B/AAN, 2.3 20V 7A, VR6 12V
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BMW: S14 (E30 M3), S38, S50B30 Euro
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Other engines that employ 7 mm valves with 9.8 mm guides—confirm in the Supertech catalog for exact fit.