GFB EX38/EX44 Replacement Diaphragm Assembly

Description

This replacement diaphragm assembly restores proper sealing and operation for GFB EX38 and EX44 blow-off valves, returning boost control responsiveness and consistent venting performance. Designed as a direct-fit service part for the EX38/44 series, the diaphragm allows straightforward swap‑out maintenance to address worn or damaged seals and keep the valve functioning to factory parameters. Ideal for enthusiasts maintaining peak turbo response on vehicles fitted with GFB EX38 or EX44 valves, the assembly supports reliable, repeatable performance without modifying the valve body.

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