T4 Automatic Starter Motor - 1995-03 - 2.5 TDI Engines

This high-torque 1.8 kW starter motor is designed specifically for Volkswagen T4 Transporter models fitted with an automatic transmission, delivering the extra cranking power required by larger diesel engines and automatic flexplate setups. Running on 12 volts, this starter is built to provide strong, consistent starts in all conditions—particularly important on T4 diesels where cold starts and higher compression demand more from the starting system.

A starter motor works by drawing a heavy current from the battery to power an internal electric motor. When you turn the key, the starter solenoid engages, pushing the pinion gear forward to mesh with the flexplate ring gear (automatic models). The motor then spins the engine fast enough for fuel delivery and compression ignition to take over. Once the engine fires, the pinion automatically disengages to prevent damage and excessive wear.

Because this is an automatic transmission application, correct fitment is critical. Automatic T4 starters typically differ from manual versions due to mounting depth and engagement requirements with the flexplate rather than a manual flywheel. This unit is specified at 1.8 kW, making it ideal for 2.4D and 2.5 TDI engines where dependable starting torque is essential.

Important note on pinion teeth:
Your data shows “Number of Teeth: 11” and also “Number of Teeth: 9”. Starters are commonly listed with one tooth count, so these two values may indicate a cross-reference, variant listing, or a data duplication. The safest approach is to confirm the tooth count against the original starter on the vehicle (or the exact part number being replaced) before fitting, as the wrong pinion tooth count can cause poor engagement or ring gear damage.

Recommended related checks / parts when fitting:

• Check battery condition and perform a voltage drop test if cranking is weak.

• Inspect and clean the earth straps (battery-to-body and engine/gearbox-to-chassis).

• Ensure the starter main cable and solenoid trigger wire are tight and corrosion-free.

• If oil contamination is present, address any engine/gearbox leaks, as oil-soaked starters fail early.

• Consider fresh mounting bolts if originals are stretched or corroded.

Technical Specifications

• Voltage: 12V

• Rated Power: 1.8 kW

• Pinion Teeth: Listed as 11 and 9 (verify against original unit)

• Transmission: Automatic

Engine Fitment Codes & Year Range (VW T4 Automatic)

• AAB – 2.4D: 1990 – 09/1998

• ACV – 2.5 TDI: 07/1995 – 07/2003

• AUF – 2.5 TDI: 05/1998 – 06/2003

• AJT – 2.5 TDI: 05/1998 – 09/2003