Description

Genuine Eaton GM 3800 Bypass Actuator

Restore factory boost control with this GM 3800 bypass actuator, a genuine Eaton OEM replacement designed for supercharged GM 3800 Series II and Series III engines equipped with the Eaton M90 supercharger. If your original actuator has become weak or stopped working, this replacement restores proper bypass valve operation, smooth throttle response, and consistent boost pressure.

Eaton manufactures this OEM component to original equipment specifications for an exact fit and dependable performance. Unlike many aftermarket copies, this genuine replacement delivers the quality and reliability your factory supercharger was designed to provide.

Vehicle Fitment

This genuine Eaton bypass actuator fits many factory-supercharged GM 3800 applications, including:

• Buick Regal GS
• Buick Park Avenue Ultra
• Buick Riviera
• Pontiac Grand Prix GTP
• Pontiac Bonneville SSEi
• Chevrolet Impala SS
• Chevrolet Monte Carlo SS

Please verify your vehicle application before ordering.

Signs You Need a New GM 3800 Bypass Actuator

A worn bypass actuator can cause:

• Loss of boost pressure
• Sluggish acceleration
• Poor throttle response
• Inconsistent bypass valve operation
• Reduced supercharger performance
• Lower engine efficiency

Replacing the actuator restores proper bypass valve function and helps your Eaton M90 supercharger deliver the performance it was engineered to provide.

Product Features

• Genuine Eaton OEM replacement
• Fits Eaton M90 superchargers used on GM 3800 engines
• Direct bolt-on installation
• Restores factory boost control
• Precision-built for an exact fit
• Durable OEM construction
• Long service life

Why Choose Genuine Eaton Parts?

A genuine Eaton actuator provides the fit, quality, and durability your supercharger deserves. OEM components maintain accurate bypass valve operation, consistent boost delivery, and dependable long-term performance. Choosing genuine Eaton parts helps protect your investment while keeping your supercharged engine running at its best.

Why Buy from Superchargers Online?

Superchargers Online specializes in supercharger rebuilding, repair, and genuine replacement parts. Our experienced technicians work with Eaton, Magnuson, Edelbrock, Whipple, Harrop, and Roush superchargers every day, providing expert support and quality components you can trust.

Order your GM 3800 bypass actuator today and restore factory supercharger performance with a genuine Eaton OEM replacement.