| 1998 | Cadillac | DeVille | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Engines with 2nd design timing cover (does have a p/n stamped on the timing cover). Water pump gaskets not included use WP281. |
| 1998 | Cadillac | Eldorado | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Engines with 2nd design timing cover (does have a p/n stamped on the timing cover). Water pump gaskets not included use WP281. |
| 1998 | Cadillac | DeVille | 4.6L/281 | DOHC V8 | Vin "9" | Northstar | Engines with 2nd design timing cover (does have a p/n stamped on the timing cover). Water pump gaskets not included use WP281. |
| 1998 | Cadillac | Seville | 4.6L/281 | DOHC V8 | Vin "9" | Northstar | Engines with 2nd design timing cover (does have a p/n stamped on the timing cover). Water pump gaskets not included use WP281. |
| 1998 | Cadillac | Seville | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Engines with 2nd design timing cover (does have a p/n stamped on the timing cover). Water pump gaskets not included use WP281. |
| 1998 | Cadillac | Eldorado | 4.6L/281 | DOHC V8 | Vin "9" | Northstar | Engines with 2nd design timing cover (does have a p/n stamped on the timing cover). Water pump gaskets not included use WP281. |
| 1998 | Oldsmobile | Aurora | 4L/244 | DOHC V8 | Vin "C" | Oldsmobile | Engines with 2nd design timing cover (has a P/N stamped on timing cover). Water pump gaskets not Included use WP281. |
| 1999-2002 | Cadillac | Eldorado | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Water pump gaskets not included use WP281. |
| 1999-2002 | Cadillac | Eldorado | 4.6L/281 | DOHC V8 | Vin "9" | Northstar | Water pump gaskets not included use WP281. |
| 1999-2003 | Cadillac | Seville | 4.6L/281 | DOHC V8 | Vin "9" | Northstar | Water pump gaskets not included use WP281. |
| 1999-2004 | Cadillac | Seville | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Water pump gaskets not included use WP281. |
| 1999-2005 | Cadillac | DeVille | 4.6L/281 | DOHC V8 | Vin "9" | Northstar | Water pump gaskets not included use WP281. |
| 1999-2005 | Cadillac | DeVille | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Water pump gaskets not included use WP281. |
| 1999, 2001-2003 | Oldsmobile | Aurora | 4L/244 | DOHC V8 | Vin "C" | Oldsmobile | Water pump gaskets not Included use WP281. When depleted use GM281CS-F |
| 2004-2005 | Pontiac | Bonneville | 4.6L/281 | DOHC V8 | Vin "Y" | Northstar | Water pump gaskets not included use WP281. |
| 2006-2007 | Buick | Lucerne | 4.6L/281 | V8 | Water pump gaskets not Included use WP281. |
| 2006-2010 | Cadillac | DTS | 4.6L/281 | DOHC V8 | L37 | Vin "9" | Northstar | Water pump gaskets not included use WP281. |
| 2006-2010 | Cadillac | DTS | 4.6L/281 | DOHC V8 | LD8 | Vin "Y" | Northstar | Water pump gaskets not included use WP281. |
| 2008-2010 | Buick | Lucerne | 4.6L/281 | DOHC V8 | L37 | Vin "9" | Northstar | Water pump gaskets not included use WP281. |
| 2010-2011 | Cadillac | DTS | 4.6L/281 | DOHC V8 | LD8 | Vin "6" | Northstar | Water pump gaskets not included use WP281. |
| 2011 | Buick | Lucerne | 4.6L/281 | DOHC V8 | L37 | Vin "S" | Northstar | Water pump gaskets not included use WP281. |
| 2011 | Cadillac | DTS | 4.6L/281 | DOHC V8 | L37 | Vin "S" | Northstar | Water pump gaskets not included use WP281. |