MerCruiser 7.4L 454 / 502 V8 Internal Engine See reference picture below! |
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| Reference Number see chart below |
Type | OE# | Part# |  |
| 1 | Head gasket gen IV, 454 | 27-13687 | 59353 | |
| 2 | Head gasket gen V, 454 | 27-811547 / 27-850470 | 59354 | |
| 3 | Head gasket 502 gev V | 27-811546 / 27-811207 | 59503 | |
| 4 | Intake gasket set oval port, 454 Gen IV | 27-65184 | 59140 | |
| 5 | Intake gasket set rect port, 454/ 502 Gen V Rect Port | 27-805722A 1 / 27-818188 | 59141 | |
| 6 | Timing cover seal | 26-49154 / 26-821947 | 49154 | |
| 7 | Timing cover gasket | 27-54529 | 54529 | |
| 8 | Timing cover gasket | 27-811572 | 811572 | |
| 9 | Valve cover gasket gen IV, Cork gasket | 27-49121 | 55638 | |
| 10 | Valve cover gasket gen V, rubber gasket with metal grommets | 27-811558 | 19598 | |
| 11 | Oil filter, Standard | 35-802885Q | 72885 | |
| 12 | High capacity oil filter, large high capacity | 35-16595Q | 72595 | |
| Not shown | Head set for Gen IV 454 oval port intake, includes head gaskets, valve cover gaskets, distributor gaskets and valve stem seals | 35-16595Q | 72595 | |
