4L80E / 4L85E Transmission

4L80E Transmission

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SKU: T281129 Category:

Product Description

-Fully remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality.
-Upgraded actuator feed limit valve prevents missing shifts and premature transmission failure.
-Upgraded 34 element intermediate sprag increases holding capacity.
-All-new shift solenoids ensure positive shifting.
-EPC solenoid is tested separate from the transmission to confirm precise pressure control.
-Case connector is updated to the latest design on pre-1994 versions, and a vehicle harness pigtail is provided to address connection issues with the early design.
-Updated force motor for improved pressure control.
-Updated pressure regulator prevents overly high pressure.
-No Walkout rear case bushing is installed, addressing an OE flaw, to prevent case and output shaft damage.
-Fully remanufactured torque converter is tested for leaks, lock-up, concentricity, and balance. Upgrades exceed OE requirements and eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
-All new, bushings installed in key locations to improve internal fluid flow control and fluid pressures.
-Complete system correction and recalibration kit installed to address several OE flaws. Modifications include updates to servos, the PR system, and valve body accumulators.
-Complete road simulation using a dynamometer testing program called C.A.R.S. (Computer Aided Road Simulation). Every transmission is cold and hot tested before shipment.

Warranty: 36 Months/Unlimited Miles

2000–2006 Chevrolet HD Trucks
1991–2013 Chevrolet C/K/Chevrolet Silverado/GMC Sierra V8
1991–2013 Chevrolet Suburban/GMC Yukon
1995–2003 Chevrolet Tahoe/GMC Yukon
1991–1996 Chevrolet Van/Chevrolet Express/GMC Savana
2002–2006 Chevrolet Avalanche V8 8.1L
1992-2006 Hummer H1
1992–1998 Rolls-Royce Silver Spirit/Spur II, III, IV
1991–1992 Bentley Eight
1991–1997 Bentley Turbo R
1991–2002 Bentley Continental R/S/T
1999–2006 Bentley Arnage Red Label
1999–2006 Bentley Arnage R/RL/T
1993–1996 Jaguar XJS
1994–1997 Jaguar XJR
1993–1997 Jaguar XJ12 / Daimler Double Six
1996–1999 Aston Martin DB7


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