which impeller, research now shows 3 numbers

tashasdaddy

Honorary Moderator Emeritus
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Nov 11, 2005
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51,019
1971, 50 hp model 50172, the impeller eater. OEM, & ishop, cross references 337230 to 777213. then did a search at ishop, using their system and it shows 2 replacement OEM 122739 and 114812.

this has me thinking that the 777213 is not the right impeller and is too wide. i'm getting plenty of flow thru lower, and hose to water tube tsat open and engine ran at 148. per my toy infrared thermo.

i can't afford all these water pumps.
 

fire831

Petty Officer 1st Class
Joined
Aug 26, 2002
Messages
373
Re: which impeller, research now shows 3 numbers

NAPA marine book shows 1971-78 50 HP impeller NAPA # 18-3083 OMC # 777213. Impeller plate, NAPA # 18-3343 OMC # 320981. Kit without housing, NAPA # 18-3376 OMC # 384956. Hope this helps.
 

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: which impeller, research now shows 3 numbers

Don't know Tash. Everywhere I've looked and crossed, I come up with 777213 as the correct one. Was that a new housing you installed with the first one?
 

tashasdaddy

Honorary Moderator Emeritus
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Re: which impeller, research now shows 3 numbers

i use the original housing on the first one, then a complete pump kit on the 2nd.
 
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