Improving Volkswagen bevel box

May 20, 2025
This bulletin applies to 2019-2021 Volkswagen Arteon, 2020-2021 Atlas Cross Sport, and 2018-2021 Atlas and Tiguan vehicles. A fluid leak may be observed at the front of the vehicle.

This bulletin applies to 2019-2021 Volkswagen Arteon, 2020-2021 Atlas Cross Sport, and 2018-2021 Atlas and Tiguan vehicles. A fluid leak may be observed at the front of the vehicle.

This may be an oil leak from the bevel box case halves. The leak source is between the case halves at the right side of the bevel box, between the two bolts shown in the following image. 

An improved bevel box design was used starting in vehicle production as of March 26th, 2021. If the bevel box leak is confirmed to be from between the case halves, remove the bevel box per ElsaPro instructions. Clean the exterior of the bevel box of any leaked gear oil using a residue-free cleaner. Remove old sealant from the exterior of the bevel box in the area where new exterior sealant will be applied. A razor or scraper can be used to remove old sealant from the surfaces. Apply silicone sealant D 174 003 M2 to the area. Also remove the two bolts and apply silicone sealant at the two bolt hole locations. Allow the sealant to cure for at least two hours and reassemble.

 

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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