Mercruiser 7.4L fuel injector service kit — o-rings and filter
Kit contents Mercury 802632T injector

Kit contents shown. Second photo from an 802632T injector we serviced in the shop.

Mercruiser 7.4L / 454 Injector Service Kit

Complete rebuild kit for all 8 injectors in the Mercruiser 7.4L Gen VI MPI engine. Fits Mercury Marine 802632T and Rochester Multec injectors. The same parts we use in the shop on every one we service.

What's in this kit (all 8 injectors)

  • 8x upper o-rings (brown)
  • 8x inlet filter screens (rectangular flat basket)
  • 8x lower o-rings (brown)
Complete 8-injector engine kit
$29.99
Free shipping — USPS Ground Advantage
Shop-verified: We use these exact kits on injectors we service here. Same parts, same supplier — if we trust them in customer engines, we're confident selling them to you.

Compatibility

Engine applications confirmed through service records and OEM cross-reference data. Engines use 8 injectors each.

Injector / Part # Engine / Application Notes
Mercury 802632T
Also: 802632, 8M0051200		 1998–2001 Mercruiser 7.4L (454 cid) Gen VI MPI — 340 hp
Sterndrive (MCM): Bravo, Alpha
Inboard (MIE): 7.4L MPI MIE (L29) 		OEM obsolete. 8 injectors per engine. Serial range 0L010003–0M024330.
Volvo Penta 3854518
Also: 3857700		 1998–2001 Volvo Penta 7.4L GSi V8
(Shares GM 454 block with Mercruiser) 		Same injector, different OEM packaging.
Crusader 49051 Crusader 454 MPI marine engine Same Rochester Multec injector body.
Rochester 25180245
Also: 17121068, 17124187		 Rochester Products / Multec I OEM designation
Stamped on injector body 		EV1 connector, 12.5–14.5 ohm, 6-hole nozzle, 24 lb/hr at 43.5 psi.

Cross-Reference Part Numbers

Mercury 802632T Mercury 802632 Mercury 8M0051200 Rochester 25180245 Rochester 17121068 Bosch 0280150947 GM 19244617 Sierra 18-33104 Mallory 9-33104 Crusader 49051 Volvo Penta 3854518 Siemens 53030262

The Bosch 0280150947 is a popular upgrade replacement for the 802632T — it uses a 4-hole nozzle vs. the original 6-hole and is widely recommended as a more reliable replacement. This seal kit fits both the OEM Rochester unit and the Bosch upgrade.