Type 25 Oil Dipstick Tube - Waterboxer Engines

This replacement oil dipstick tube is designed for Volkswagen Type 25 / T3 buses fitted with 1.9 and 2.1 petrol Waterboxer engines. It is the correct tube for non-Syncro (2WD) models, providing the proper routing and length for accurate oil level checking and a secure seal at the crankcase.

On Waterboxer engines, the dipstick tube guides the oil dipstick cleanly into the crankcase and helps keep dirt, moisture, and fumes out of the engine. Over time, original tubes can corrode, become bent, crack at the base, or loosen where they seat in the crankcase. Any of these issues can lead to oil misting, inaccurate dipstick readings, or difficulty inserting and removing the dipstick.

This replacement restores the correct factory-style fit and function, ensuring:

• Smooth, accurate dipstick operation

• Proper sealing at the crankcase entry point

• Reduced oil vapour escape and contamination

• Correct routing for non-Syncro engine layouts

What it does and how it works

The dipstick tube is pressed/seated into the crankcase and provides a fixed guide for the dipstick to reach the oil sump. When correctly fitted, it ensures the dipstick follows the intended path so oil level readings remain accurate. A sound tube is essential for reliable oil checks and clean engine bay operation.

Fitment

• Vehicle: Type 25 / T3 (2WD / Non-Syncro only)

• Years: Waterboxer models

• Engines: 1900cc & 2100cc petrol Waterboxer

• Exclusions: Not suitable for Syncro models

Fitting notes / related parts

• Inspect the dipstick for damage or incorrect length before refitting

• Ensure the tube seats fully into the crankcase for a good seal

• Replace any missing seals or grommets as required

• Check for clearance and alignment once installed

Ideal for restorations, engine resealing work, or replacing damaged originals, this dipstick tube helps keep your Waterboxer engine easy to service and properly sealed.