Baywindow Bus B Post Plug - 1971-79 + T4 Front Cross Member Plug

This oval rubber bung is designed to seal access holes in the bodywork, most commonly used on the B-post door pillar of Volkswagen T2 Bay Window buses (1971 onwards). It provides a neat, factory-style finish while protecting the vehicle structure from dirt, moisture, and corrosion.

Body plugs like this are essential for sealing unused apertures in the chassis and body panels. Over time, original rubber bungs can harden, shrink, or fall out, leaving openings exposed. This can allow water ingress, leading to rust inside pillars and structural sections. Replacing missing or damaged plugs helps preserve the integrity of the body and prevents long-term corrosion issues.

Manufactured from durable rubber, this plug is flexible for easy installation while maintaining a tight, secure fit once installed. Its oval shape matches original factory openings, making it ideal for restoration work or general maintenance.

Product details:
Shape: Oval
Material: Rubber
Type: Body bung / sealing plug
Sold individually

Fitment summary:
VW T2 Bay Window 1971-1979 – B-post door pillar and body apertures

Additional applications:
VW Transporter T25 (T3) 1979-1992 – B pillar, C pillar, frame bottom
VW Transporter T4 1990-2003 – body at axle beam areas
VW LT Mk1 1979-1996 – A pillar locations

Other parts you may need:
Additional body bungs in various sizes, seam sealer, cavity wax, and rust protection treatments when restoring or sealing bodywork.