Wastegate Actuator 6-7 PSI Rating (GT28R style w/ int. bracket) P/N: 448734-5

This wastegate actuator is the direct replacement unit for GT28R turbochargers running a 6-7 PSI spring rating, built for owners who need to restore factory boost control without compromise. Its integrated bracket design keeps installation true to OEM specifications, making it the correct choice for stock and mildly modified setups where factory boost characteristics matter. For enthusiasts who want reliable, predictable boost control exactly as Garrett intended, this actuator is the right fit.

Specifications

• Application: GT28R style, with integrated bracket
• PSI Rating: 6-7 PSI
• Garrett P/N: 448734-5
• Alternate P/N: ATP-WGT-024

Performance & Application

Designed as the stock replacement unit for GT28R turbochargers, this actuator is built to maintain factory boost control on stock and mildly modified applications. The 6-7 PSI spring rating keeps boost levels within factory-intended parameters, making this the correct actuator for owners looking to preserve OEM drivability and reliability rather than push boost significantly higher. It’s the right call for daily-driven or mildly tuned setups where consistent, factory-calibrated boost response is the priority.

Compatibility & Fitment

• GT28R turbochargers

Frequently Asked Questions

What PSI rating does this wastegate actuator use?

This actuator carries a 6-7 PSI spring rating, matching the stock unit found on GT28R turbochargers.

What turbo is this actuator designed for?

This is the stock wastegate actuator found on GT28R turbochargers, featuring a GT28R style design with an integrated bracket.

Is there an alternate part number for this actuator?

Yes, this actuator is also referenced under product code ATP-WGT-024.

For GT28R applications requiring factory-correct boost control, this actuator delivers the exact 6-7 PSI performance and integrated bracket fitment the platform was designed around.