Engine Oil Drain Plug Gasket - Revised
Number: 86-118Section: 6A & 0B
Date: JULY, 1986
Subject: NEW ENGINE OIL DRAIN PLUG GASKET TO REPLACE COPPER GASKET
Model and Year:
ALL 1986 AND PAST MODEL YEARS APPLICATIONS OF V-8, V-6, OHV L-4 WITH THE FOLLOWING VIN CODES
^ PASSENGER CAR - F,G,H,P,S,W,X,Y,Z,6,8
^ TRUCK - F,H,K,L,M,N,R,W,Z
TO: ALL CHEVROLET DEALERS
An improved oil drain plug gasket, P/N 14090908, is available to replace the copper gasket. The new gasket is a steel washer with captured O-ring (Viton).
The new O-ring/steel gasket is capable of sealing irregular surfaces with light torques while retaining the clamping load over time. Reuse of the O-ring/steel gasket does not lessen sealing or torque retention characteristics.
Recommended torque for the O-ring/steel gasket is 12-20 ft.lbs. (16-27 N-m).
Excessively higher torques may cause deformation, splitting, or loss of sealing capability.
This is an informational bulletin.