Impala V8-305 5.0L VIN H 4-bbl (1982)
Fuel Return Line: Technical Service Bulletins
Fuel - Line O Rings Precaution
Number:
85-12
Section:
6C (VIII)
Date:
Nov., 1984
Subject:
FUEL LINE "O" RINGS
Model and Year: 1982-85 MODELS
TO:
ALL CHEVROLET DEALERS
The fuel line "O" rings (feed and return lines) used on many 1982-85 engine applications are made of Viton. The Viton "O" rings
(Viton is a type of rubber) are brown in color. They are less affected than rubber by the additives used in many of the fuel blends
available today and therefore should not be substituted with other type rubber "O" rings. The following are the part numbers used on
the above applications:
Group
P/N
Usage
3:163
22514722
Feed Line
3:163
22516256
Return Line