MALIBU 💦 water pump

Dezimade

Master Mechanic
Sep 22, 2021
335
98
28
Boston Ma.
Hi guys, not that I’m trying to be bougie but is there a quality water pump out there besides what I’m seeing? I’m seeing prices that range from very low to high consider considering this is my first water pump from Malibu. I was curious if somebody could lead me in the right direction I believe in quality. Thanks !!! Dez.
 
I can't recall which engine you have. If it's SBC I chose a Duralast CWP520HDA ($70) but the same exact pump is sold as 1121HX and 20040HX as a stock replacement. It's also the same pump offered by Airtex (the maker), CVF Racing, DeMotor, Speedway, etc., some of which charge over $200. As long as you see the "X" or "A" alongside the number it's the same pump. This is proven by searching by the number stamped on the housing: GMB 130-1250HP. This is an aluminum "HD" pump that cost me $70 last spring, and the regular ones are about $45. I've never had an issue with Duralast water pumps, unlike their starters/ alternators. The AC Delco Gold part number for the iron version is 252595, $43 on Rock Auto.
 
Is it stock, brand of motor, cubes ,and how many miles? If it’s over 100,000 you don’t want to spend a fortune when good is just fine. Sorry but otherwise it’s kind of a shot in the dark.
Thanks. Yes over 100 Dez.
 
I can't recall which engine you have. If it's SBC I chose a Duralast CWP520HDA ($70) but the same exact pump is sold as 1121HX and 20040HX as a stock replacement. It's also the same pump offered by Airtex (the maker), CVF Racing, DeMotor, Speedway, etc., some of which charge over $200. As long as you see the "X" or "A" alongside the number it's the same pump. This is proven by searching by the number stamped on the housing: GMB 130-1250HP. This is an aluminum "HD" pump that cost me $70 last spring, and the regular ones are about $45. I've never had an issue with Duralast water pumps, unlike their starters/ alternators. The AC Delco Gold part number for the iron version is 252595, $43 on Rock Auto.
Thanks. Great info!!
 
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Hi there. Stock 267. Thanks. Dez
Water pump would be the same as one for a 305 or 350, so I stand by my lightweight recommendation.
 
It's harder than it used to be, but always buy "new" water pumps whenever possible. Pay once, cry once. I know that's a big ask with 50 year-old junk nowadays, but if you can get new, do that. Just a general recommendation. SBC water pumps are easy to rebuild, but usually much tougher to get GOOD rebuild kits anymore (from what I heard), plus you likely need at least a press to do it. With a press and good rebuild kit, that's one way of saving a "concours restoration" original equipment pump. However, with a stock engine of no consequence, swapping them out is usually much more time/cost-efficient.

At the risk of showing my SBC-illiteracy, a stock 267 should inherently be the same as about any other old-school SBC configuration in general. However, I am not aware of all the different snout lengths, etc., on SBC pumps. Oldsmobile (my go to) mainly used 2 different snout lengths and getting the wrong one would definitely be a PITA if you didn't double check. I think Corvettes had a shorty, but can't recall. I've heard Chevy guys talk about long pumps but I don't pay much attention, so I might just be talking out of my azz.
 

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