This Technical Information Bulletin replaces TI-C-36, J-132, dated February 1989
Subject: Sparkplugs
Vehicles: All
As of February 1988, all vehicles with OHC engines will be factory equipped with sparkplugs with a modified thermal rating "WR 7 DC". Sparkplugs previously used, with thermal rating "WR 6 DC", Catalogue No. 12 14 806, are no longer supplied by P & A.
Moerover, vehicles with CIH engines and closed loop catalytic converter will also be factory equipped with "CR 4.25 FS" sparkplugs as well as "WR 7 BC sparkplugs.
Below is a survey of all sparkplugs that are installed and which are available from P & A.
Sparkplugs
| Vehicles with Catalytic Converter | Designation | Catalogue No. |
|---|---|---|
| C 16 LZ Engine | WR 6 DC | 12 14 803 |
| OHV and CIH Engines | WR 7 BC | 12 14 805 |
| CR 4.25 FS | 12 14 138 | |
| All OHC Engine, except C 16 LZ | WR 7 DC | 12 14 807 |
| DOHC Engine (C 20 XE) | FR 7 DC | 12 14 804 |
Sparkplugs
| Vehicles without Catalytic Converter | Designation | Catalogue No. |
|---|---|---|
| OHV and CIH Engines | CR 42 CFS | 12 14 801 |
| WR 7 BC | 12 14 805 | |
| CR 4.25 FS | 12 14 138 | |
| All OHC Engine | CR 42 CXLS | 12 14 802 |
| WR 7 DC | 12 14 807 | |
| DOHC Engine (20 XE, 20 XEJ) | FR 7 DC | 12 14 804 |
Modification are indicated by "M"