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Water Pump Impeller OMC 777214
Description
Function and Technical Context
The water pump impeller is the central element of the cooling system in outboard engines, responsible for driving seawater or freshwater through the engine block to maintain operating temperature within safe limits. Made of flexible rubber, its vanes bend as they rotate within the pump housing, generating the flow rate necessary to cool both the block and exhaust manifolds. Without sufficient cooling flow, the engine can reach critical temperatures within minutes, causing irreversible damage to cylinder head gaskets, pistons and cylinder liners. This impeller, referenced as 777214 and compatible with OMC references 0777214 and 396809, as well as Mercury/Mariner/MerCruiser reference 878883, is designed for Johnson and Evinrude engines in the 35 to 55 HP range, ensuring a precise fit in the water pump housing.
When to Replace This Part?
The clearest symptoms of a worn impeller are the absence or reduction of cooling water discharge at the outlet fitting, triggering of the engine temperature alarm, or visible overheating during operation. The rubber vanes harden, crack or deform over time and heat, losing pumping capacity even before breaking completely. It is recommended to replace the impeller every 200-300 operating hours or, at minimum, every two boating seasons; replacing it preventively at each major service avoids groundings due to overheating and much more costly engine repairs.
Compatible Johnson/Evinrude Engines
| Series | Models |
|---|---|
| E35 | E35AELCDE 1986, E35AELCUD 1987, E35ARLCDE 1986, E35ARLCUD 1987 |
| E40 | E40AELCCS 1988, E40ARLCCS 1988, E40ATLCCS 1988, E40ECCS 1988, E40ECDE 1986, E40ECUD 1987, E40ELCCS 1988, E40ELCDE 1986, E40ELCUD 1987, E40RCCS 1988, E40RCDE 1986, E40RCUD 1987, E40RLCCS 1988, E40RLCDE 1986, E40RLCUD 1987, E40TECCS 1988, E40TECDE 1986, E40TECUD 1987, E40TELCCS 1988, E40TELCDE 1986, E40TLCCS 1988, E40TLCDE 1986, E40TLCUD 1987, E40TTLCCS 1988 |
| E45 | E45RCCDS 1986, E45RCCUC 1987, E45RCE 1989, E45RCEIA 1991, E45RCENM 1992, E45RCERE 1994, E45RCESR 1990, E45RCETB 1993, E45RCLCDS 1986, E45RCLCUC 1987, E45RCLE 1989, E45RCLEIA 1991, E45RCLENM 1992, E45RCLERE 1994, E45RCLESR 1990, E45RCLETB 1993, E45WMLE 1989, E45WMLEIA 1991, E45WMLENM 1992, E45WMLESR 1990 |
| E48 | E48ESLCCC 1988, E48ESLCUS 1987 |
| E50 | E50BECCS 1988, E50BECDE 1986, E50BECUD 1987, E50BELCCS 1988, E50BELCDE 1986, E50BELCUD 1987, E50TELCCS 1988, E50TELCDE 1986, E50TELCUD 1987, E50TLCCS 1988, E50TLCDE 1986, E50TLCUD 1987 |
| E55 | E55RWLCDC 1986, E55RWLCUC 1987, E55RWLE 1989, E55RWLEIA 1991, E55RWLENM 1992, E55RWLERE 1994, E55RWLESR 1990, E55RWLETB 1993 |
| J35 | J35AELCDE 1986, J35AELCUD 1987, J35ARLCDE 1986, J35ARLCUD 1987 |
| J40 | J40AELCCS 1988, J40ARLCCS 1988, J40ATLCCS 1988, J40ECCS 1988, J40ECDE 1986, J40ECUD 1987, J40ELCCS 1988, J40ELCDE 1986, J40ELCUD 1987, J40RCCS 1988, J40RCDE 1986, J40RCUD 1987, J40RLCCS 1988, J40RLCDE 1986, J40RLCUD 1987, J40TECCS 1988, J40TECDE 1986, J40TECUD 1987, J40TELCCS 1988, J40TELCDE 1986, J40TLCCS 1988, J40TLCDE 1986, J40TLCUD 1987, J40TTLCCS 1988 |
| J45 | J45RCCDS 1986, J45RCCUC 1987, J45RCE 1989, J45RCEIA 1991, J45RCENM 1992, J45RCERE 1994, J45RCESR 1990, J45RCETB 1993, J45RCLCDS 1986, J45RCLCUC 1987, J45RCLE 1989, J45RCLEIA 1991, J45RCLENM 1992, J45RCLERE 1994, J45RCLESR 1990, J45RCLETB 1993, J45WMLE 1989, J45WMLEIA 1991, J45WMLENM 1992, J45WMLESR 1990 |
| J48 | J48ESLCCC 1988, J48ESLCUS 1987 |
| J50 | J50BECCS 1988, J50BECDE 1986, J50BECUD 1987, J50BELCCS 1988, J50BELCDE 1986, J50BELCUD 1987, J50TELCCS 1988, J50TELCDE 1986, J50TELCUD 1987, J50TLCCS 1988, J50TLCDE 1986, J50TLCUD 1987 |
| J55 | J55RWLCDC 1986, J55RWLCUC 1987, J55RWLE 1989, J55RWLEIA 1991, J55RWLENM 1992, J55RWLERE 1994, J55RWLESR 1990, J55RWLETB 1993 |
| M55 | M55RWLR 1988 |
| R45 | R45RCLR 1988, R45RCR 1988 |
| R55 | R55RWLR 1988 |
| S45 | S45RCLR 1988, S45RCR 1988 |
| VE48 | VE48ESLCCC 1988 |
| VJ48 | VJ48ESLCCC 1988 |
Equivalent Manufacturer References
| Manufacturer/Brand | Reference/Part Number |
|---|---|
| Mercury/Mariner/Mercruiser | 878883 |
| OMC | 0777214, 396809, 777214 |
Related Johnson/Evinrude Spare Parts
If you are maintaining or repairing your Johnson/Evinrude engine, these spare parts might also interest you:
- Tapon Aceite 10-79953Q04Category: J/E Lower Drive 4-8 HP (1980+)
- Anodo Cola Omc CM393023Category: J/E Lower Drive V4/V6 Ratio O (1979-06)
- Reten 324937Category: J/E Lower Drive 40-75 HP (1975-06)
- Chaveta 344470Category: J/E Lower Drive 25-35 HP
- Goma Bomba Agua 341732Category: J/E Lower Drive 40-50 HP (1989-05)
