Baywindow Bus Air Hose Grommet - Right (Oval) - Type 4 Engines

This oval air hose grommet is designed to fit the right-hand air hose on Volkswagen Type 4 aircooled engines with capacities from 1700cc to 2000cc. It is used on Baywindow Buses manufactured from 1972 to 1979 and fits through the cylinder tinware where the oval-ended air hose passes through.

On Type 4 engines, the cooling and air circulation system relies on all ducting being securely mounted and properly sealed. This grommet supports and cushions the right-hand oval air hose as it passes through the engine tinware, preventing movement, vibration, and chafing against sharp metal edges. It also helps seal the opening in the tinware, reducing unwanted air leaks that can compromise cooling efficiency.

Over time, original grommets often become hard, brittle, or split due to heat and age. When this happens, the air hose can loosen, rub against the tinware, or allow air to escape where it shouldn’t, upsetting the carefully balanced airflow designed by Volkswagen. Replacing the grommet restores a secure fit and helps maintain correct air circulation across the engine.

This high-quality replacement part is manufactured by Forst and is made to the correct shape and size for the right-hand oval air hose. It installs directly into the cylinder tinware without modification and is ideal for restorations, engine rebuilds, or routine maintenance.

Fitment:

• Right-hand air hose (oval end)

Other parts that may be required or worth checking when fitting:

• Right-hand oval air hose

• Left-hand air hose grommet (round or oval, depending on application)

• Cylinder tinware condition and seals

Correctly fitted air hose grommets are essential for protecting hoses, maintaining proper airflow, and ensuring efficient cooling on Type 4 aircooled engines.

Applications

• VW Baywindow Van (Type 4 engines): 1972 – 1979

• Engine Type: Type 4 aircooled, 1700cc, 1800cc, 2000cc