oem water pump?
Thread Starter
Teching In
Joined: Oct 2013
Posts: 41
Likes: 3
From: Wisconsin
oem water pump? so rockauto lists two part #s for the ac delco water pumps..anybody know the difference between these two besides the impellar one is $106 and the other is about $180..this is what rockauto told me
"Thank you for your email. The 251744 is the Original Equipment (OE) design with a steel impeller that Pontiac/GM used originally on the vehicle. The 252846 is the aftermarket replacement version with a cast iron impeller"
"Thank you for your email. The 251744 is the Original Equipment (OE) design with a steel impeller that Pontiac/GM used originally on the vehicle. The 252846 is the aftermarket replacement version with a cast iron impeller"
Seems pretty straightforward to me?
The pump with the steel impeller is a quality aftermarket unit, and you pay for it.
The pump with a cast iron impeller is a cheap aftermarket and probably has other compromises elsewhere to meet a price point. Take your chances...
The pump with the steel impeller is a quality aftermarket unit, and you pay for it.
The pump with a cast iron impeller is a cheap aftermarket and probably has other compromises elsewhere to meet a price point. Take your chances...
You'll also want to ensure if you're getting the updated pump which will require a new filler neck and separate thermostat (rather than the thermostat that's integrated in the housing like came stock).
i ran into this problem back when i changed my waterpump. they (gm) discontinued the ls1 pump so only ls2 was available for me. as the other poster stated i needed a diff housing which meant a diff 160 therm. new pump bolted up just fine. cheers!
Thread Starter
Teching In
Joined: Oct 2013
Posts: 41
Likes: 3
From: Wisconsin
talked to a GM dealer, ls1 pumps are updated which like you said is pretty much the ls2 pump..so I would need the ls2 housing and two new bolts..so does that mean I use the thermostat from the ls2 as well aka gto?
