34mm X 9mm Valve - Waterboxer Exhaust Valve (Not DF or EY)

This standard replacement exhaust valve is designed for VW Type 25 / T3 buses fitted with 1900cc and 2100cc Waterboxer (WBX) petrol engines, excluding DF and EY engine codes. Manufactured to exacting standards by IVAM (Italy), this valve is a high-quality, OE-style replacement suitable for engine rebuilds, cylinder head overhauls, or replacing worn or damaged exhaust valves.

The exhaust valve operates under extreme heat, channeling burnt gases out of the combustion chamber on every engine cycle. Correct material quality, valve head diameter, and stem size are critical for maintaining proper sealing, heat transfer to the valve seat, and long service life. This valve features a 34mm diameter head and a 9mm stem, with the correct 122mm overall length, ensuring proper compatibility with the specified Waterboxer cylinder heads.

Precision manufacturing ensures accurate valve seating and consistent stem geometry, helping to restore compression, improve combustion efficiency, and reduce the risk of burnt valves.

Important Fitment Note:
This exhaust valve will NOT fit DF or EY engines, which use smaller 30mm exhaust valves. Always confirm your engine code and valve size before ordering.

Specifications

• Valve head diameter: 34mm

• Stem diameter: 9mm

• Overall length: 122mm

• Quantity: Sold individually (4 required per engine)

• Quality: Good quality replacement, IVAM manufactured

Engine Compatibility (Watercooled WBX)

Fits the following engine codes:

• DG – 1.9

• DH – 1.9

• GW – 1.9

• SP – 1.9

• DJ – 2.1

• MV – 2.1

• SR – 2.1

• SS – 2.1

Not suitable for: DF, EY (30mm exhaust valve heads)

Vehicle Applications

• VW Type 25 / T3 Bus: 1982 – 1992
  (1.9 & 2.1 Waterboxer petrol engines as listed above)

Fitting & Related Parts

• Recommended quantity: 4 exhaust valves per engine

• Always inspect and, if required, replace valve guides, valve stem seals, and valve seats

• Check installed height and valve seat contact pattern during assembly

• Follow correct run-in procedures after engine rebuild