T4 Alternator Belt Idler Pulley - 1995-03 (AAB,AJA,ACV,ACU,AEN,AET,AEU Engines)

Maintain correct belt tension and smooth operation of your VW T4’s alternator system with this 78mm alternator belt tensioner pulley, designed for engines without a threaded centre bush. This pulley ensures the correct routing and tension of the alternator drive belt, preventing slippage and excessive wear while helping to deliver reliable charging performance.

Constructed from high-strength, heat-resistant plastic, this pulley offers low rotational resistance and long service life, even under continuous load. It provides a quiet, stable operation and helps to prevent belt squeal or premature failure — essential for dependable performance in diesel and petrol T4 engines.

Ideal for both maintenance and restoration, this direct-fit replacement pulley is compatible with a range of Volkswagen Transporter T4 engine variants, including diesel and petrol versions.

Key Features:

• Precision 78mm alternator belt tensioner pulley

• No threaded centre bush design for specific engine fitments

• Maintains correct belt alignment and tension

• Constructed from durable, heat-resistant plastic

• Smooth and quiet operation for long-term reliability

• Direct replacement for worn or noisy pulleys

Dimensions:

• Outer Diameter: 78 mm

• Inner Diameter: 8 mm

• Width: 25 mm

• Material: Plastic

Engine Fitments:
From chassis number F70-S-071 872 → 01/1995

AAB 2.4 Diesel 01/1995-09/1998

AJA 2.4 Diesel 04/1997-06/2003

ACV 2.5 TDI 06/1995-07/2003

ACU 2.5 Petrol 01/1995-10/1996

AEN 2.5 Petrol 05/1995-12/1995

AET 2.5 Petrol 08/1996-06/2003

AEU 2.5 Petrol 08/1996-06/2003

Applications:

• VW Transporter T4 (1995–2003) – 2.4 Diesel & 2.5 Petrol/TDI engines