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.

5L40E 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.

► Remanufactured pump, with new line bore bushings to eliminate leaks and provide superior flow and durability.

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

► 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 5L40E?

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!

5L40 Series Applications:

2004–2006 Cadillac CTS (RWD)
2005–2006 Cadillac STS (RWD)
2004–2006 Cadillac SRX (RWD)
2008–2009 Pontiac G8 (RWD)
2004–2006 Cadillac CTS (AWD)
2004–2006 Cadillac STS (AWD)
2004–2006 Cadillac SRX (AWD)
2006 Pontiac Solstice (Not avail)
2007 Saturn Sky (Not avail)
BMW 3 Series (Inquire for price)
BMW 5 Series (Inquire for price)
BMW Z3 (Inquire for price)
BMW X5 (Inquire for price)
5L40E Series Applications:

5L50 Series Applications:

2004–2006 Cadillac XLR
2005–2006 Cadillac STS
2004–2006 Cadillac SRX

The 5L40-E and 5L50 are a series of automatic transmissions made by General Motors. Designed for longitudinal engine configurations, the series includes 5 forward gears and is used in the GM Sigma platform vehicles from Cadillac and the Pontiac Solstice and certain BMW models.

The electronically controlled transmission is designed around a fully articulated Ravigneaux gearset that is controlled by electronically timed application of several range-specific hydraulic clutches, in combination with mechanical one-way sprag clutches. The 5L40E unit’s centerpiece is an automatic overdrive which supersedes the French-made 4L30E four-speed automatic light-duty gearboxes, and like them features a torque converter clutch to eliminate slipping losses in select forward ranges. It is assembled in Strasbourg, France.

The 5L40/50 series was replaced in 2007 with the 6L50 six-speed.

The 5L40-E was designated in either “M82” (rear-wheel drive) or “MX5” (all-wheel drive) versions for service in BMW vehicles from 2000 model year until the design was superseded by (for BMW) the 6L45E and (for all others) the 6L50E series electronic automatic transmissions in 2007 . It is designed for service in vehicles up to 4000 lb (1814 kg) GVWR and in service was mated to a selection of final drive ratios 3.42:1, 3.73:1, or 3.91:1 depending on the carline. The 5L40-E had been designed for 1.8–3.6 L engines with a maximum of 250 ft·lbf (340 N·m) of torque. It was underrated when used in combination of M57D30 engines. As the M57D30 rated torque output of 390/410Nm.

The 5L50 is engineered to handle the stresses from vehicles weighing up to 5000 lb (2268 kg) GVWR. Final drive ratios include 2.93:1 and 3.23:1. The 5L50 can handle up to 311 ft·lbf (422 N·m) of torque.