Replaces the worn valve body in the Aisin TF-80SC six speed transaxle when bore wear causes shift flare, harsh 1-2 shifts or loss of drive.
Opel, Citroen, Peugeot and Renault models built on the Aisin TF-80SC six-speed automatic - sold in Europe under the AF40 and AF40-6 part numbers - share a well-known weak point: the valve body that controls line pressure and houses the shift solenoids. This listing is a complete TF-80SC/AF40 valve body with the solenoids already installed, cross-referenced to the OE part numbers these platforms actually use, for buyers dealing with harsh shifts, flare or a transmission that will not select a gear.
Inside the transaxle, the valve body is the link between the transmission control module and the clutch packs that actually make the gear changes happen. Line pressure from the pump arrives at the body and is directed through a network of precision bores and spool valves, each one controlled or modulated by a solenoid mounted on the body itself. When a bore wears oval or a solenoid sticks, the pressure delivered to a clutch no longer matches what the computer commanded, and the shift quality - or the ability to shift at all - suffers.
Bore wear at the solenoid modulator valve and the secondary pressure regulator valve are the two most commonly documented failure points on this valve body family, since both stroke constantly as the computer commands shifts, and both compromise either shift-feel or converter and lube circuit pressure as they wear (see the Sonnax valve body layout referenced in Sources). A sticking shift solenoid on an otherwise sound body produces the same no-movement or harsh-shift symptoms, which is why replacing the whole assembly with solenoids installed, rather than chasing one component, is usually the faster and more reliable repair.
Scan for stored codes before ordering. A ratio code or a pressure-control code across multiple gears points at the valve body itself; a single solenoid circuit code with every other gear shifting normally points at that one solenoid instead, which may be worth testing on its own first. Check fluid condition and level at the same time, since low or burnt fluid can produce the same symptoms as a worn valve body and should be ruled out before any parts are ordered.
This valve body is cross-referenced to Opel/Vauxhall, Citroen, Peugeot and Renault OE part numbers 733026, 93183641, 2570.E4, 30713214 and 31259456, covering the TF-80SC/AF40/AF40-6/AWF21 six-speed as installed from 2005 up. The same core transaxle was also used by Volvo, Saab, Ford, Mazda, Land Rover and Mini, so if your vehicle is one of those, check our full TF-80SC/TF-81SC lineup as well, since casting and connector details vary by application and model year. Match the OE number stamped on your old body, or give us your VIN, before assuming any TF-80SC valve body is interchangeable across brands.
Drain the case and remove the pan and filter before dropping the old valve body straight down - prying on the aluminum casting risks a leak at the mating face. Mark the position of the solenoid harness connectors and the manual valve linkage before disassembly, since the manual valve must seat correctly on the detent pin for the shifter to select gears properly. Install a new filter and pan gasket with this valve body, torque the mounting bolts evenly in sequence, and refill with JWS 3309-spec ATF. If the symptoms included a harsh converter lockup or shudder on top of the shift complaints, inspect the torque converter clutch solenoid as well, and consider the AF40 shift kit if you are addressing shift feel at the same time. Complete the job with an adaptive relearn so the computer retrains to the new body rather than applying old wear-compensation values to it.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. This listing is a complete assembly with the shift and pressure control solenoids already installed, not a bare casting.
It cross-references to Opel/Vauxhall, Citroen, Peugeot and Renault OE numbers 733026, 93183641, 2570.E4, 30713214 and 31259456 for the TF-80SC/AF40/AF40-6 six-speed.
Harsh or delayed 1-2 shifts, flare between 3rd and 6th, torque converter clutch shudder, no movement in Drive or Reverse, and stored ratio or pressure-control codes are the common pattern.
It is the same core transaxle family, but the casting, connector and solenoid layout differ by brand and model year. Match the OE number on your old body, or send your VIN, rather than assuming cross-brand interchangeability.
A filter and pan gasket kit and a full ATF service are the minimum. If shudder or converter lockup complaints were part of the original symptoms, check the torque converter clutch solenoid as well.
Run the transmission control module's adaptive relearn procedure after the fluid fill. Skipping it can leave the transmission shifting on old wear-compensation values that do not match the new valve body.
