Lubrication & Oil
New Style Oil Cooler Seals
This guide is preserved from Clark's Garage, a foundational 944 resource. View the original →
Tools you'll need
See the full tools list for where to buy each one and budget alternatives.
Introduction
This document contains information from Porsche Technical Bulletin 8813 dated June 10, 1988.
Information
The o-rings used on both nozzles (see picture below) of the normally aspirated car oil cooler AND on the connection pipe of the turbo charged car oil thermostat / filter housing (one o-ring) were replaced by a new style o-ring in 1988. The new style o-rings are green in color while the old style o-rings are red.
When replacing oil cooler seals, only the new version o-rings should be installed. The part number for the new style o-rings is 999 707 043 40.
The new version o-rings were installed from the following engine numbers:
| New Style O-Ring Installations | |
| Engine Number | Vehicle |
| 46 J 06772 | 924S, 944 Manual Transmission |
| 46 J 61599 | 924S, 944 Auto Transmission |
| 42 J 01420 | 944S |
| 45 J 01753 | 944 Turbo |
| 47 J 00899 | 944 Turbo S |