Master overhaul kit for the AL4 / DP0 four-speed automatic in Peugeot, Citroen and Renault cars, cross-referenced to 226333 and 7701467106.
If your Peugeot 206, 307 or 406, or your Citroen C3, C4 or C5, has an automatic that drops into limp mode, flares between second and third, or slips once it gets hot, the gearbox behind it is almost certainly the four-speed AL4. Renault fits the same unit and calls it the DP0. This master rebuild kit is the full set of wear parts for taking that gearbox down to the case and putting it back together with fresh frictions, bands, seals, gaskets and a new filter. It cross-references 226333, FG226333, 7701467106, 7700107587 and the DP0 designation.
The AL4 is a compact transverse four-speed that PSA and Renault developed together for front-wheel-drive cars with small and mid-size engines. Every gear is the result of the computer applying a particular combination of clutches and brakes through solenoid-controlled hydraulic circuits, with line pressure set by a pressure modulation solenoid and read back by a pressure sensor. That design makes the box very sensitive to two things: worn friction material, and pressure that is too low to clamp the packs. Once the clutches start to slip, fluid breaks down, varnish builds in the valve body, and pressure control gets worse, which slips the clutches harder. A master kit breaks that cycle by renewing every friction element and every seal and gasket that holds pressure. The kit photos show the friction plate sets, two band assemblies, the case and cover gaskets, the valve body gasket, the pan seal, lip seals, sealing rings, O-rings and a new filter.
Not every AL4 fault is a rebuild. Pressure regulation faults on this box very often come from the modulation solenoid, the pressure sensor or its wiring under the gearbox, so read the stored codes and live data first. A line pressure check tells you a lot: Sonnax's DP0 valve body instructions give a cold, idle, Park line pressure of 2.7 bar (39.2 psi), and note that low pressure shows up as neutral at idle or loss of hill hold while high pressure gives harsh engagements. Our line pressure checking guide walks through the gauge setup, and the solenoid multimeter test rules out a bad coil. If the pressure is right and the clutches still slip, or the pan is full of friction debris, the gearbox needs this kit. The slipping diagnosis guide covers how to tell the two apart on a road test.
The fitment chart for this kit lists, among others, Peugeot 206 (2000-2011), 307 (2001-2011), 308 (2007-2011), 406 (2000-2005), 407 (2003-2011) and 807 (2002-2010); Citroen Berlingo (2000-2002), C2 (2006-2010), C3 (2001-2011), C4 and C4 Picasso (2004-2011), C5 (2000-2011) and C8 (2002-2010); Renault Clio, Megane, Scenic, Laguna, Kangoo, Logan, Sandero and Fluence on the 1.4 to 2.0 four-cylinders; plus Samsung SM3 and several Chery models. Two cautions. First, not every automatic in these ranges is an AL4: the 406 V6, for example, used a ZF 4HP20 instead. Second, PSA and Renault built the AL4 and DP0 in several revisions. Check the tag on the gearbox case before ordering, or send us the year, model and VIN and we will confirm it. If you are only rebuilding a Peugeot 307 2.0 and want a smaller clutch-and-seal set, compare it with our AL4 DPO kit for the Peugeot 307, which has a different OE reference list.
A full AL4 overhaul is a big job, but done once with every wear part replaced it costs far less than a replacement gearbox. If you are weighing the two, our rebuild vs replacement cost guide lays out the numbers.
| Transmission | AL4 / DP0 4-speed automatic |
| Cross references | DP0, 226333, FG226333, 7701467106, 7700107587 |
| Listed fitment | Peugeot 206, 306, 307, 308, 406, 408; Citroen C2, C3, C4, C5, C8; Renault and Chery AL4/DP0 applications |
| Kit type | Master rebuild kit |
| Shipping weight | 9.46 lb |
Yes. PSA (Peugeot and Citroen) calls it the AL4 and Renault calls it the DP0. This kit is cross-referenced to DP0, 226333, FG226333, 7701467106 and 7700107587. There are internal revisions over the years, so match the tag on your gearbox case or send us your VIN.
Only if the cause is worn clutches or bands. Many AL4 limp mode faults come from the pressure modulation solenoid, the pressure sensor or its wiring. Read the codes and check line pressure first. If pressure is correct and the box still slips or the pan is full of friction material, the rebuild kit is the right fix.
Sonnax's DP0 valve body instructions give 2.7 bar (39.2 psi) cold, at idle, in Park. Low pressure causes neutral at idle or loss of hill hold, and high pressure causes harsh engagements.
Inspect and replace any scored drums, worn bushings or a worn pump, and service or replace the solenoids and pressure sensor if they test bad. Flush the cooler as well, because friction debris left in it will go straight back into the new clutches.
Yes. Clear the fault codes and reset the gearbox adaptations so the computer relearns clutch fill on the new parts. Skipping it usually leaves harsh or flared shifts until the adaptations are reset.
