V4 Water Pump Failures...

I'm hearing from other owners that water pump failures are very common on the V4, does this affect all model years?

John

There's been multiple revisions. The first major one was about 2020. This stopped the failures from leaking into the oil. Such that all the leaking fluid drained into the V of the engine. The next major revision was to add tubing so it leaked off the bottom of the bike instead of running into the V. Ducati's 2025 press release talked about another cooling system revision which talks about dual flow. What I think this refers to is splitting the pump flow into two separate outlets such that each head has it's own flow path from pump to head. This could probably be adapted to the earlier V4's because the pump actually pumps out thru 2 outlets that are joined into one slightly downstream. The radiator and oil cooler surface area has been increased somewhat on the 25's. I have to believe that another major water pump revision came with the 2025's but I've not seen the new part numbers. The V4's have also gone thru a number of oil pump revisions and in 2025 all V4's use the R oil pump.

Thanks Baggerman, so I can assume on my new 2024 V4, the coolant will leak into the V when it fails?

Is this a 100% certainty the pump will fail at some point on these engines?

Thanks!

John

I actually won't worry much about a 24. They've clearly been working on this. My own bike has no issues at 12K. It's a 21, so after the first revision. I think some of these might had been caused by poor assembly fixturing used during the assembly of the pump on the early bikes. I took one apart from the 2019 motor I have on the bench. Posted under "waterpump exploded". If I bought a pre 21 V4 I'd go in and change it preemptively. But I think you're pretty safe. 2024's leak thru a tube so it won't leak into the V.

Kruz said:

Thanks Baggerman, so I can assume on my new 2024 V4, the coolant will leak into the V when it fails?

Is this a 100% certainty the pump will fail at some point on these engines?

Thanks!

John

Click to expand...

You can shine a flashlight into the V with the fairing off you’ll see the weep hole and pretty quickly know if you’ve got a leak…. I think by 2024 yours has a tube that goes to the bottom of the bike.

Jag