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Supertech

B58 intake valve stem seal VSI-BM60-E for BMW M340i, X3 M40i, GR Supra A90

B58 intake valve stem seal VSI-BM60-E for BMW M340i, X3 M40i, GR Supra A90

£1.82 GBP
£1.92 GBP £1.82 GBP
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Supertech VSI-BM60-E intake valve stem seals - precision 6mm integral seals engineered for B58 engines. Fits BMW M140i, M240i, 340i, M340i, 440i, M440i, 540i, 640i, 840i, X3/X4 M40i, X5/X6/X7 40i, Z4 M40i and Toyota GR Supra A90.

  • Reduces cold-start blue smoke and intake valve oil deposits
  • Suitable for standard, fast-road or track-day B58 builds
  • Sold individually - order per valve for head refresh or full valvetrain upgrade
  • Exceeds OEM tolerances; proven in daily drivers and high-boost applications
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