Technical Service Bulletin: Taillights Water Ingress in 1987 Porsche 928 S4
Tail Lamp: All Technical Service Bulletins
Taillights - Water Ingress
Subject:
Water Entering Taillights
Model
928 S4
Group
9
Part Identifier
9430
Number
8701
February 13, 1987
To prevent water from entering and remaining in the taillights on 1987 Model vehicles, the polyurethane lining received two drain holes on each side.
From Production Date:
Sept. 5, 1986 VIN 92 HS 860288
Cars prior to the above VIN and new linings from parts inventory can be modified by drilling two 10 mm holes in each side of the lining in the corner
area of reinforcement.