GFB Replacement Diaphragm Assembly – EX38 / EX44 External Wastegate

Keep your GFB external wastegate performing at its best with the GFB EX38/EX44 Replacement Diaphragm Assembly. Over time, wastegate diaphragms can wear, crack, or lose elasticity — leading to inconsistent boost control, boost creep, or wastegate failure. This direct replacement assembly restores your GFB wastegate to factory performance spec, ensuring precise, reliable boost pressure regulation.

A straightforward service item for any turbocharged build running a GFB EX38 or EX44 external wastegate.

Key Features

• Direct Replacement: OEM-spec diaphragm assembly designed specifically for GFB EX38 and EX44 external wastegates
• Restores Boost Control Accuracy: Replaces worn or damaged diaphragms to eliminate boost creep, inconsistent boost, or wastegate actuation issues
• Durable Construction: Built to GFB’s quality standards for reliable performance under sustained boost pressure and heat
• Easy Serviceability: Designed for straightforward replacement without full wastegate disassembly
• GFB Quality: Genuine Go Fast Bits replacement part — engineered for the EX38/EX44 platform

Compatibility

• GFB EX38 External Wastegate
• GFB EX44 External Wastegate

Note: This is a replacement diaphragm assembly only — wastegate body and hardware not included. Verify compatibility with your specific GFB wastegate model before ordering. Professional installation recommended.