T25,T4 Oil Filler Cap

This plastic oil filler cap is designed to seal the oil filler neck on a range of Volkswagen T25 and T4 engines, including both aircooled and waterboxer units, as well as later T4 petrol and diesel engines. It provides a secure closure to prevent oil leaks, contamination, and loss of crankcase pressure.

The oil filler cap plays an important role in maintaining correct engine operation. It prevents dirt and moisture from entering the engine while helping to contain oil vapour within the crankcase system. A worn or damaged cap can lead to oil mist in the engine bay, poor sealing, or contamination of engine oil. Replacing it restores proper sealing and ensures reliable engine performance.

Manufactured from durable plastic, this cap is designed for a precise fit and long service life. Ideal for routine maintenance or replacing missing, cracked, or loose original caps.

Product details:
Material: Plastic
Direct replacement oil filler cap

Fitment summary:
VW Transporter T25 1980-1983 – 1.6 & 2.0 aircooled, 1.9 & 2.1 waterboxer engines

VW Transporter T4 1992-2003 –
• 1.8–2.0 4 cylinder petrol & diesel (AAC, ABL, 1X, PD)
• 2.4 & 2.5 5 cylinder engines (AAB, ACU, AAF)

Other parts you may need:
Breather hoses, rocker cover gaskets, and general service items when maintaining the engine.