Complete friction, steel plate and seal overhaul kit for the PSA AL4/DP0 four-speed in the Peugeot 307, 308, 407, 607 and 5008.
A Peugeot 307 2.0 automatic that flares on the 2-3 shift, bangs into second once it is hot, sits a beat before it takes Drive in the morning, or throws itself into limp mode is almost always talking about its four-speed AL4. Once the frictions are glazed and the piston seals have hardened, the only fix that lasts is a full teardown. This kit is the friction-and-seal set for that job on the 307 and its early 308 and 407 relatives, cross-referenced to T15500A, T15502A, T155080B and 155940.
The AL4, which Renault builds as the DP0, is a compact front-drive four-speed that PSA and Renault developed together and produced from 1998 to 2011. It is rated for engines up to 2.0 liters and about 210 Nm, which is exactly the 307 2.0 territory. Each gear is a combination of clutches and brakes applied through solenoid-controlled circuits, so the box depends on two things: friction material that can still grip and seals that can still hold apply pressure. The photo shows the friction plate sets for the clutch and brake packs, a new filter, the valve body and pan gaskets, axle and converter lip seals, sealing rings, piston seals and a bag of O-rings. Steel plates are also listed in the contents; count them against the old packs when the kit arrives.
Many AL4 faults are pressure faults, not clutch faults. The pressure modulation solenoid, the pressure sensor and the wiring under the box fail often, and a warped or varnished valve body causes harsh, jerky shifts on its own. Read the codes and live data, check the fluid level and condition, and put a gauge on line pressure using our line pressure guide. If pressure is correct and it still flares, our flare versus slip guide helps you decide whether the clutches are gone. Test suspect solenoids with the multimeter solenoid test before buying anything.
The listing names the Peugeot 307 2.0L (2003-2010), the 308 1.6L (2009-2021), the 407 2.2L and 2.9L (2006-2009), the 607 2.9L (2002-2008) and the 5008 1.6L and 2.0L (2019-2022), plus the Citroen SM. Read that list carefully. Published application data shows the AL4 in the 307 from 2001 to 2009, the first-generation 308 from 2007 to 2011, the 407 from 2004 to 2011 and the 607, but its 2.0 liter and 210 Nm limit means a 2.9 V6 is not an AL4 car, later 308s moved to six-speed and eight-speed Aisin automatics, and the 2017-on 5008 uses six- and eight-speed automatics, not a four-speed. Check the tag on your gearbox case before ordering, or send us the year, model and VIN. If your car is a 206, a Citroen C3, C4 or C5, or a Renault with the DP0, compare our AL4 master kit for Peugeot and Citroen, which carries a different cross-reference list, or browse the rebuild kits category.
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Yes, the 307 2.0 is the core application for this kit and the AL4 was fitted to the 307 from 2001 to 2009. Confirm the code on the gearbox tag before ordering.
We would not order it for those without checking. The 2017-on 5008 uses six- and eight-speed Aisin automatics, and the AL4 is rated for engines up to 2.0 liters, so a 2.9 V6 normally has a different gearbox. Send us the VIN and we will check.
Mechanically they are the same gearbox. The differences are in software and temperature control, with the PSA version going into limp mode sooner when it overheats.
Check the bushings, pump and drums, and test the pressure modulation solenoid and pressure sensor. Those parts cause many AL4 complaints and are not covered by a friction and seal kit.
The AL4 has a small heat exchanger, and the PSA software protects it by dropping into limp mode at high fluid temperature. A clean cooler, correct fluid level and good pressure control help, and slipping clutches make the heat worse.
