Ship Direct To Repair Shop
We provide an out-the-door price, with shipping, for a replacement remanufactured 4L80E transmission direct to the repair shop.

Allison 1000 Transmissions At Wholesale Prices
At Street Smart, we provide remanufactured transmissions shipped factory direct at wholesale prices to save you money.

Synthetic Fluid Available
We can provide Pennzoil Platinum LV Multi-Vehicle ATF Synthetic Transmission Fluid – See order page for more details.

►Fully remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality.

► Late-OEM front pump covers eliminate cracking around torque converter pads.

► Upgraded lube regulator valve and torque converter relief spring eliminate delayed engagements and reduce operating temperatures.

► F-Trim valve sleeve greatly reduces possibility of overheated torque converter.

► E-Shift valve spring enhances shift quality and increases durability.

► Additional friction plate added to C3 clutch increases load capacity.

► Completely remanufactured late design pump with new line bore bushings eliminates leaks and provides superior flow and durability.

► 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.

How Many Variations of the Allison 1000?

There are many different variations (so we have over 60 different part numbers!). Each one for a different engine size (bellhousing) and varying electronic and solenoid systems for different years.

Only certain models will interchange with others, which is why we ask for your 17-digit VIN# when you order so we are 100% sure it is the matching unit for your vehicle!

Early Model: 2001 – 2005 — 5 speed

Late Model: 2006 – 2015 — 6 speed

The Allison 1000 series is a line of automatic transmissions for on-road trucks and are 5 or 6-speed electronically controlled units. The Allison 1000 is rated to handle up to 620 lb·ft (841 N·m) of torque. A newer version 1000 was introduced in 2005 that added a 6th gear at the very top of the ratio ladder, making it double overdrive.

In 2006, manual gear selection was added which gives more control over the transmission and enhances truck operation when engine braking or less frequent shifting is warranted.