- 2019 CX-5 Reserve
The OEM and Aftermartket Gates Water pump were not heavy at all. Likely aluminum bodies. The OEM has plastic impeller (did not check the Gates unfortunately) but unless there's hard objects in the cooling system I can't see the blades chipping.Water Pump Failure can lead to engine block damage and metal flake in coolant. Aftermarket pumps fail early from leakage and bearing failurekarmakanix.com
Good read. I find it horrific that they went to plastic...but at least the impellers have gotten better to where they last. The full plastic water pumps just scream "throw this car away".
Interesting that the OEM pump has a plastic impeller. I picked up an Aisin pump recently (Part # : WPZ-045) to replace the pump on my CX-5 when I do the 100K mile coolant/belt replacement(I figure it makes sense to swap out the pump when I'm already half-way there doing other things), and it definitely seems to be metal. I guess that means Aisin probably isn't the OEM-source for newer Mazda water pumps.
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I believe the reason why car manufactures have switched to plastic composite impellers and even plastic water pump body is for the lighter weight.oh good info here. I've got a Gates branded one but not sure whom really makes it and I don't know if it has metal impellers.
Aisin in theory could make the OEM pumps but with plastic impellers to cut down on costs?
I could not locate any markings to suggest who made the Mazda OEM pump. I tried googling some codes stamped on it but no luck. That said there's not one report of a skyactic pump (any model) where the pump impeller broke let alone fail.........well except for me. In my case the internal seal went bad.I believe the reason why car manufactures have switched to plastic composite impellers and even plastic water pump body is for the lighter weight.
I suspect the water pump on our CX-5 is from Denso?
Yes BMW’s I6 were notorious for its plastic water pump and it fails easily in many ways. The plastic water pump on my 2000 BMW 528i “exploded” from its bearing with small metal balls flying everywhere under the hood at 28K miles!