TiAL 005477 MV-I 2.5 Internal Wastegate Actuator 16 PSI Silver

The TiAL MV-I 2.5 Internal Wastegate Actuator (Part #005477) is a fully configurable, modular replacement actuator engineered for high-performance turbo applications. Designed as a direct, stronger replacement for OEM 480099-XXXX style actuators, this unit delivers precise boost control and long-term reliability in demanding forced induction builds. The 005477 variant is configured with a 16 PSI base spring and a silver anodized finish.

Key Features:

• Compact actuator body standing only 2.2" in height (without fittings and actuator rod) — ideal for tight engine bay installations
• High-temperature silicone Nomex-reinforced actuator diaphragm for durability under extreme heat
• 17-7 PH Stainless Steel actuator spring delivers consistent boost pressure at elevated temperatures and resists relaxation up to 900°F (483°C)
• Fully anodized aluminum housings for corrosion and wear resistance
• Available in straight or offset-bent rod configurations with 4.33" O.A.L. stem designs
• Universal two-bolt mounting pattern for broad compatibility
• Threaded air ports: M8 x 1.0
• Base spring pressures available from 4 PSI to 22 PSI across the MV-I lineup
• Fully engineered in-house by TiAL's engineering team

What's Included:

• MV-I 2.5 Assembly with 16 PSI spring
• M8 x 1 Straight Banjo Air Fitting
• M8 x 1 Air Port Plug with Aluminum Sealing Washer
• Specified actuator rod
• 1/4 x 28 bolts for mating to actuator bracket

Compatible with the TiAL IWG series turbine housings and TiAL Alpha turbo systems, the MV-I 2.5 is the go-to upgrade for anyone seeking a more robust and configurable internal wastegate solution over factory components.