5L40E Clutch Module, new and ready to install. Fits the 5L40E. Ships fast from the USA.
If your BMW 3 Series, X3, X5 or Z4 with the five-speed automatic, or a Cadillac CTS, has started slipping on the 2-3 or 4-5 shift, flares when hot, or came apart with burnt clutches, this is the friction side of the repair. It is a clutch pack of friction plates for the GM 5L40E family, listed for the 4L40E, 5L40E, 5L50E and ON10 units built from 1999 on. Frictions only: no steels, no filter, no gaskets and no seals, so you pay for the plates you are actually replacing.
GM built the 5L40E in Strasbourg, France, for rear-drive and all-wheel-drive cars. BMW calls it the A5S 360R. It uses a Ravigneaux gearset with hydraulic clutches and one-way sprags, and the transmission computer times each clutch apply. Each friction plate is splined to one member and sandwiched between steel plates on the other; when the piston squeezes the stack, the two lock together. The intermediate clutch comes on for the 2-3 shift and the overdrive clutch for the 4-5 shift, so a worn lining in either pack shows up first on those shifts. GM rates the 5L40E for about 250 lb-ft and the 5L50E for about 311 lb-ft, and the clutches in a tuned or towing BMW live close to that limit.
Not every slip on this unit is a clutch problem. Worn accumulators, a leaking case seal sleeve and a worn AFL valve in the valve body can all cause gear ratio codes, so check line pressure and fluid condition first. Our slipping diagnosis guide and the flare versus slip guide help you sort out which shift is affected. If the pan shows friction debris and the slip is on a specific shift, plan on new frictions for that pack and an air check of its piston once the unit is apart.
The listing names the 4L40E, 5L40E, 5L50E and ON10 from 1999 forward, with these vehicles: BMW 323Ci 2000-06, 325i/xi 2001-06, 328i/iS 1996-00, 330i/Ci/xi 2001-07, 335i/Ci/xi/d 2007-09, 525i 2001-03, 528i 1999-00, 530i 2001-03, X3 2004-07, X5 2000-08, Z4 2001-06 and Cadillac CTS 2003-07. The family changed over its run, and clutch counts differ between early and 2003-up housings, so count the frictions in your old packs and match their tooth style before you order. The ID tag is on the left rear of the case above the pan rail. Send us the year, model and VIN if you want us to check it. More parts are on our 5L40E and 5L50E parts page.
| Fits | 5L40E |
| Part type | Clutch Module |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
No. It is friction plates only. Steels, the filter, gaskets and seals are not included, so order those separately if yours are worn.
The listing covers the X5 from 2000-2008 with the GM five-speed automatic. Some X5 models used other transmissions, so confirm the tag on your case or send us your VIN.
They share the same basic design and many parts, but the 5L50E is rated for more torque and has valve body differences. This friction pack is listed for both.
Low or old fluid, worn accumulators or seals that drop apply pressure, and extra torque from tuning or towing. Fix the pressure problem when you replace the frictions or they will burn again.
Yes. Reset the transmission adaptive values with a scan tool so the computer relearns clutch fill times for the new plates.
