BorgWarner Actuator EFR High Boost Use with 55mm and 58mm TW .64

SKU: 179284 | UPC: 840232703207

BorgWarner Actuator EFR High Boost Use with 55mm and 58mm TW .64 A/R T3 Housings

The BorgWarner EFR High Boost Actuator PN 179284 upgrades EFR turbochargers for elevated boost demands. It installs on T3 .64 A/R housings with 55mm and 58mm turbine wheels found in popular performance setups on Subaru STI, Mitsubishi Evo, and Toyota 2JZ builds. Expect precise control up to 43 PSI for consistent power delivery in race or street applications.

Key Features

• High Boost Range: Handles up to 43 PSI (3 bar) thanks to increased spring preload for demanding setups
• Exact Compatibility: Matches EFR T3 .64 A/R housings with 55mm and 58mm turbine wheels like 6258 models
• Direct Bolt-On: Replaces standard actuator without housing changes or custom fabrication
• Rugged Build: Aluminum housing and reinforced rod withstand heat and pressure cycles
• Boost Precision: Internal diaphragm design ensures quick response and stable pressure

Product Notes

• Verify your EFR turbo housing matches T3 .64 A/R with 55mm or 58mm turbine wheel before ordering
• Use boost controller for fine tuning after installation
• Standard ground shipping applies to all orders

Installation Notes

• Professional installation recommended.
• Adjust linkage rod length to set base boost level per application
• Mounts to factory EFR bracket with included hardware

This Part Fits

Year	Make	Model	Submodel
2004-2021	Subaru	Impreza WRX	STI
2004-2021	Subaru	WRX	STI
2003-2006	Mitsubishi	Lancer Evolution	VIII/IX
2008-2015	Mitsubishi	Lancer Evolution	X
1993-2002	Toyota	Supra	2JZ-GTE
1989-1998	Nissan	Skyline	GT-R R32/R33
1995-2002	Nissan	Silvia	S14/S15 SR20DET

Why Choose BorgWarner?

• Leads turbo innovation with OE supply to global automakers
• EFR line dominates motorsport with track-proven durability
• Engineered tolerances deliver repeatable boost accuracy

Frequently Asked Questions

• Q: Will this fit my EFR 6258 turbo?
  A: Yes it fits EFR 6258 with 58mm turbine wheel and T3 .64 A/R housing along with other matching EFR models
• Q: What materials are used in construction?
  A: Features cast aluminum body, stainless steel actuator rod, and reinforced diaphragm for heat resistance up to 500F
• Q: What warranty coverage applies?
  A: Covered by BorgWarner 12-month limited warranty against defects in materials and workmanship

Shipping & Handling

• Method: Standard ground
• Availability: In stock – ships same or next business day
• Packaging: Original manufacturer box with protective foam inserts
• Weight: 1.3 lbs