Turbosmart TS-0625-4072 IWG75 Wastegate Actuator for Garrett GTX28R SR20 7PSI

Vehicle Fitment

• Nissan SR20DET Applications Equipped with Garrett GTX28R Turbocharger

Fitment Notes

• Turbo-specific -- bolt-on fitment for the Garrett GTX28R as fitted to Nissan SR20DET engines
• Direct replacement for factory internal wastegate actuator
• Pre-fitted with 7 PSI base spring
• Optional springs available from 3 PSI to 26 PSI (sold separately)
• Higher base pressure springs may require tuning and recalibration
• Locking collar design allows quick spring changes without disassembly

Features

• Turbosmart IWG75 upgraded internal wastegate actuator
• Increased working ratio over factory actuator -- larger diaphragm surface area
• Improved boost response throughout the RPM range
• Peak boost achieved earlier and held longer into higher RPM
• Proprietary silicone Nomex diaphragm -- withstands high temperatures
• High-grade billet aluminum construction
• Stainless steel rods and clevis for corrosion resistance
• Turbosmart unique locking collar system for quick spring changes
• Proven technology from Turbosmart WG38/40/45mm external wastegates

Specifications

• Model: IWG75
• Type: Internal Wastegate Actuator
• Turbo Fitment: Garrett GTX28R (SR20DET)
• Base Spring Pressure: 7 PSI
• Optional Spring Range: 3-26 PSI
• Diaphragm: Proprietary Silicone Nomex
• Body Material: High-Grade Billet Aluminum
• Rod/Clevis Material: Stainless Steel
• Finish: Black
• UPC: 9329677016024

Included Components

• 1x Turbosmart IWG75 internal wastegate actuator (7 PSI spring pre-fitted)
• Required fasteners
• 1x Swivel hose barb

Product Description

The Turbosmart TS-0625-4072 is an IWG75 series upgraded internal wastegate actuator designed as a bolt-on fitment for the Garrett GTX28R turbocharger as fitted to Nissan SR20DET engines. Turbosmart has taken the proven technology from their WG38, WG40, and WG45mm external wastegates and applied it to the internal wastegate actuator, providing better turbo response and greater sensitivity when managing boost pressures. The IWG75 benefits from an increased working ratio over the factory actuator -- achieved through a larger effective diaphragm surface area and revised spring fitment -- resulting in greater leverage against the forces of boost and backpressure while remaining super-responsive.

With the same 7 PSI base pressure as factory, you can expect a broader boost and torque curve with peak boost achieved earlier in the RPM range and held longer into higher RPM. These improvements can be further amplified with higher base pressure springs (available from 3 to 26 PSI, sold separately), though tuning and recalibration is likely required with higher pressures. The proprietary silicone Nomex diaphragm withstands the extreme temperatures found in turbocharger environments, while the high-grade billet aluminum body and stainless steel rods and clevis provide durability and corrosion resistance. Turbosmart's unique locking collar system allows quick spring changes without full actuator disassembly -- making trackside adjustments fast and easy. Ships as a complete kit with the 7 PSI spring pre-fitted, required fasteners, and a swivel hose barb for immediate bolt-on installation.