GFB EX44 External Wastegate
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GFB EX44 External Wastegate - Universal - 44mm V-Band
The GFB EX44 is a compact 44mm external wastegate built for boost control without the bulk. GFB have engineered this into one of the shortest wastegates in its class, so it tucks into tight engine bays while still delivering the flow you need for serious turbo setups.
This listing covers the GFB EX44 44mm V-band external wastegate, a universal fitment component suited to custom turbo manifolds and aftermarket exhaust housings across most makes and models.
Note: The wastegate ships with 15 psi (103 kPa) of spring pressure fitted as standard (one 10 psi/69 kPa outer and one 5 psi/34 kPa inner spring). Removing either spring drops base pressure to 69 kPa or 34 kPa. A 7 psi (48 kPa) middle spring is available separately for additional pressure combinations.
Specifications
- Valve size: 44mm
- Mounting: V-band clamp system
- Body, valve, seat and hardware: CNC machined high-temperature 253MA chromium-nickel stainless steel
- Actuator housing: CNC machined billet 6061 aluminium
- Diaphragm: Nomex-reinforced silicone
- Internal shroud protects valve stem from heat and carbon build-up
- Springs supplied: 10 psi (69 kPa) and 5 psi (34 kPa), giving base boost options of 34, 69 or 103 kPa
- Made in Australia under ISO 9001
Fitment notes, spring pressure charts and any additional part numbers are provided in the tabs above. Please confirm your manifold flange and clamp compatibility before ordering.
Not sure if this wastegate suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
Universal fitment — verify dimensions before ordering.
Technical Specifications
| Spec | Value |
|---|---|
| Part Number | EX44 |
| Valve Size | 44 mm |
| Standard Spring Configuration | 15 psi (103 kPa) total — 1 x 10 psi (69 kPa) outer spring + 1 x 5 psi (34 kPa) inner spring |
| Base Boost Range (standard springs) | 5, 10, 15 psi (34, 69, 103 kPa) |
| Optional Middle Spring | 7 psi (48 kPa) |
| Base Boost Range (with optional middle spring) | 5, 7, 10, 12, 15, 17, 22 psi (34, 48, 69, 83, 103, 117, 152 kPa) |
| Body Material | Investment cast 253MA chromium-nickel stainless steel |
| Valve Material | CNC machined billet stainless steel |
| Actuator Housing Material | CNC machined billet 6061 aluminium |
| Diaphragm Material | Nomex-reinforced silicone |
| Mounting System | V-band clamp, 44 mm |
| Manufacturing Standard | ISO 9001, made in Australia |
No instructions available for this product.

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