5L50E Valve Body 2002, remanufactured and ready to install. Fits the 5L50E. Ships fast from the USA.
A 2002 car with the 5L50E five-speed automatic that bangs into second, flares on the 2-3 change, loses reverse or drops out of converter lockup on the highway is very often telling you the valve body is worn out. This is a remanufactured valve body for the 2002 5L50E, the heavy-duty version of GM's Strasbourg-built five-speed that BMW lists as the A5S 390R. At that point in the unit's life it was a BMW-only transmission; Cadillac did not start using the 5L50 until the 2004 model year, so a 2002 valve body comes from the early BMW production run.
The 5L50E runs a Ravigneaux planetary gearset that is shifted by applying range clutches in combination with one-way sprags, and every one of those clutch applies is timed by the valve body. It meters line pressure from the pump through its spool valves, carries the shift and pressure control solenoids the transmission computer fires, and controls the torque converter clutch through a dedicated TCC regulator apply valve. The 5L50E is rated for heavier vehicles and more torque than the 5L40E, roughly 311 lb-ft against 250 lb-ft, and the valve body is calibrated for those clutch loads. Four bolt-on accumulators on the valve body cushion the shifts, and their springs are what give each gear change its feel.
Start with fluid level and condition, then scan for stored codes and watch commanded versus actual gear and TCC slip on live data. A solenoid that is commanded but the ratio never changes points at hydraulics rather than the computer. A pressure gauge on the case tells you whether line pressure follows the pressure control solenoid command; our line pressure testing guide walks through the hookup and what a good reading looks like. If the main complaint is a shudder at 40 to 50 mph, rule out the converter itself with our TCC shudder diagnosis guide before you commit to a valve body.
This listing is for the 2002 5L50E. Published application lists for that year include all-wheel-drive BMW 3-Series models such as the 325xi and 330xi, and the diesel X5 3.0d sold outside North America. Because the 5L40E and 5L50E look the same from the outside, identify yours before ordering. The ID tag sits on the left rear of the case just above the pan rail, and BMW units carry a G or Z letter in the tag position Transmission Digest describes. On the valve body itself, the 5L50E uses a separator plate stamped 374 and a second-accumulator housing cast 96023532, the only accumulator with both inner and outer springs. If your old unit does not show those marks, send us your year and VIN and we will match the correct piece. Browse every part we stock for this unit on the 5L50E parts page, or compare with our 5L50E valve body for other years.
Drop the pan, unplug the internal harness and lift the old valve body off with the transmission level so the checkballs and accumulators do not fall out of place. Do not move accumulators or springs from your old valve body onto the new one: the four mounting spots accept five different accumulator sizes, and a mixed-up accumulator gives you the exact harsh or soft shift you are trying to fix. Torque the bolts in sequence to the factory value. Fit a new filter and pan gasket at the same time with our 5L40E/5L50E filter and pan gasket kit so debris from the failed unit is not pulled straight into the replacement, then refill with the fluid your transmission tag and BMW service data call for and check the level hot at the specified temperature. Finish by clearing codes and resetting the shift adaptations; our adaptive relearn guide explains why the first drives after a valve body swap matter. If the pump is scored or line pressure stays low with the new valve body installed, the 5L50E pump is the next part to look at.
| Fits | 5L50E 2002 |
| Part type | Valve Body |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The 5L40E and 5L50E share a case design and look alike, but the 5L50E valve body uses the 374 separator plate, the 96023532 second accumulator and a different TCC regulator apply valve. Check the ID tag on the left rear of the case and the separator plate code before ordering.
In 2002 the 5L50E was a BMW application, chiefly all-wheel-drive 3-Series models like the 325xi and 330xi, plus the X5 3.0d diesel sold outside North America. Cadillac use began with the 2004 model year. Send us your VIN if you are unsure what is in your car.
Always fit a new filter and pan gasket and fresh fluid. If the old fluid was dark, smelled burnt or had heavy friction material on the magnet, inspect the clutches and pump before blaming everything on the valve body, because worn clutches will still slip with a good valve body.
Leave them on the old valve body. There are five accumulator sizes that can bolt into four positions, and springs vary between them, so swapping parts across is one of the most common causes of a bad shift after a valve body replacement.
Yes. Clear the stored codes and reset the transmission adaptations, then drive through every gear under light and moderate throttle so the computer relearns clutch fill times. Skipping the reset can leave harsh or soft shifts that make a good valve body feel faulty.
