MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
Supporting Member
Ride of the Month Winner
Is the Mopar water pump impeller plastic or metal?
- Thread starter Irun
- Start date
Mopar original on my 99 was metal and Mopar replacement was metal too. Just like everything in this "FUQED UP" world, you just don't know what you get with any brand part.
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Just the photo .. certainly not plastic. I scratched it a little bit on the edge and that confirmed it for me.
do you mean plastic with metal flakes in it? never heard of "metal filled plastic" how is that done?
Not sure if you are serious or pulling my leg
The impeller does has a metallic sound to it if I tap it with my finger nails.
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MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
Supporting Member
Ride of the Month Winner
Rubicon John
TJ Enthusiast
Found my old oem water pump. Scratching with my fingernail, it sure sounds like metal. But when I scrape it with a knife, it cuts exactly like glass reenforced plastic. Very good glass reenforced plastic.
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I'm amazed that thing is actually plastic. Seriously. I really thought it was metal. Probably tells you how much of a noob I am.
His or yours? Yours could be aluminum, that would mean they anodized it. Possible, not probable though. But before you get too amazed that something with very little axial load on it is made from plastic, take a peek at your power steering pump pulley some time.
Mine. I suspect it's the same as jjvw's but new condition.
I'm look at that pulley over the weekend. I'll be prepared to be surprised.
Why yes, yes it is. High performance fiber filled polymer capable of handling the load of the tensioner and the power required to turn the pump. And before anyone dismisses that as being a small load, it takes 3-5 horsepower to turn the pump at full load.
Note also that it is a press fit onto the pump shaft which means the arbor has to be able to withstand the expansion forces when pressed on without cracking. Pretty cool application of an engineered polymer. The Glock of steering pump pulleys.
Is this a Mopar pump? Metal impeller. No sign of the Mopar star on the housing. Owner bought it from WeAreMopar several years ago as a Mopar part. We are replacing it in our hotel parking lot in Moab right now.
Came off of a 97
Came off of a 97
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OP
That doesn't look Mopar to me. The flange where the fan mounts is different than what I'm used to seeing?
Looks just like mine did. Maybe Mopar USA, Mexico, India and China have slight differences in their parts. The sad truth.