[danzo_m]

Hi,

As your all probably aware the 335i N54 water pump's can be temperamental and can let go at any time.

Now my water pump is fine however the thought came to me today and I wondered if the BMW 1M water pump is any better and if so would it fit on a stock 335i N54 block??

Also if the pump is stronger and better than it should definitely aid the cooling of the car in the summer should I decide to fit the JB4 G5 kit to my car

[AtlantaDude]

Good Question! Subbing and hoping an answer comes out...

[old grey steve]

Mine went late last year first sign was the fain that kept staying on then the car went into limp mode.

To the best of my knowledge the water pumps are the same item from memory the part number ends in 885 or something like that.

[seanblee]

Same pump I think - RealOEM for 1er M Coupe (roadster not listed) vs RealOEM for 335i.

Steve, FYI, the part number ending 885 was superseded in 2012 by 11517632426, which is the new style Continental pump that doesn't have rubber vibration damping on the mounts, so needs shorter bolts (20mm instead of 32mm).

[old grey steve]

Originally Posted by seanblee

Same pump I think - RealOEM for 1er M Coupe (roadster not listed) vs RealOEM for 335i.

Steve, FYI, the part number ending 885 was superseded in 2012 by 11517632426, which is the new style Continental pump that doesn't have rubber vibration damping on the mounts, so needs shorter bolts (20mm instead of 32mm).

yeh your right the part number I grabbed was off my old one which oddly enough I've still have my old unit at work, it looks as you've pointed out slightly different but went on without drama, they knew there was an issue re these pumps as the same fault kept appearing on the 35i's the issues slightly different from the others BMW water pumps but fail they do

[themanthatcan]

Originally Posted by old grey steve

Mine went late last year first sign was the fain that kept staying on then the car went into limp mode.

To the best of my knowledge the water pumps are the same item from memory the part number ends in 885 or something like that.

Yeah tell me about it..mine went last Monday. Started the 200 mile journey from Newquay back to Southampton and thought something sounded a bit louder than normal, which turned out to be the fans on full whack.

3 miles down the road and the amber warning flashed up on the dashboard and then 5 seconds later the red warning. Managed to limp it off the dual carriageway into an industrial estate and then began the long wait of 5 hours before they got a suitable recovery truck out to tow me back to their depot.

11 hours that journey home took in total, but thankfully the pump got replaced under warranty and I picked her back up again on Friday. Was so nice to get out of the Chevy Spark hire car and back into a proper car!

[danzo_m]

Out of curiosity what was the mileage on your car?

[themanthatcan]

Originally Posted by danzo_m

Out of curiosity what was the mileage on your car?

Mine? It had just ticked over 50k miles the day before it failed.

[gangzoom]

Mine failed at 50k, seems like a common issue at that millage.

[surrey 335i]

would be interesting to know for sure of any differences between years on water pumps.
when my one started to leak (at 189,000 miles) I used a 2nd hand one off a 2008 335i that was being broken for spares and it fitted fine (and was only £35).

[gangzoom]

Water pump was redesigned at some stage. The newer one requires different screws to mount compare to the old one. My 08 (Oct 07 build date) car had the older pump. Not sure when the new ones were fitted as stock.