Exoracing 38mm External Wastegate Gasket

A 38mm external wastegate gasket from Exoracing, laser cut from 304 stainless steel or supplied in aluminium composite. Both versions share 70mm hole centres and are designed to meet 38mm external wastegate specifications for a snug fit. Choose the material that suits your build, then check the dimensions against your flanges.

• Laser cut from 304-grade stainless steel, or available as an aluminium composite version, so you can pick the material to suit your setup.
• Stainless version measures 88.5mm wide by 51mm high and 0.5mm thick at 7g; the aluminium composite version is 90mm by 53mm and 2mm thick at 9g.
• Hole centres are 70mm on both versions, and the gasket is designed to meet 38mm external wastegate specifications.
• Exoracing describes it as creating a tight seal between two flanges, such as wastegate to manifold, and preventing boost pressure leakage.
• The maker claims no exhaust gas escapes from the flanges it seals, and describes it as more reliable and heavier duty than paper gaskets, with an OEM level of quality and fitment.

Check before you order

• A worn gasket should always be replaced to reduce the risk of boost leak
• Worn, split or damaged gaskets can cause exhaust gas leakage and reduced engine power output

Specifications from Exoracing

Fitting notes from Exoracing

• Installation: Professional installation is always recommended
• Flange preparation: Resurface the wastegate or manifold flange if not 100% flat, otherwise the gasket may blow out
• Fitting position: Fitted on either the manifold or outlet side, sandwiched between the flanges
• Torque: Tighten the wastegate bolts to factory specification
• Retorque: Retorque the wastegate bolts after a few heat cycles as they commonly come loose on 38mm external wastegates
• Replacing gaskets: Replacing both wastegate gaskets at the same time is recommended for optimal performance
• Safety before fitting: Ensure the wastegate and turbo manifold are cool to the touch before starting to avoid burns

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