Click the image to expand

Rein Automotive Expansion Tank/Coolant Reservoir | 17137787039

BMW X5, X3, 328i, 325i, 330i, 330Ci, 325Ci, 325xi, 330xi, 323i & more
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.

Make Sure It Fits

P/N: 17137787039 Rein Automotive
1 per car. Does not include cap RE-17117639022 or coolant level sensor 17117506601.
Cross References:
  • 17111436413
  • 17117573781
  • 17132247553
  • 17137787039MY
  • W01331797677
  • 17137787039 is an expansion tank for BMW developed by Rein Automotive.
  • The expansion tank on your BMW does exactly what it's name suggests. It holds coolant allowing the expansion of coolant capacity as the engine gets warmer and refills the cooling system.
  • Additionally, it is the point at which your cooling system is refilled as servicing the cooling system.
  • Being made of plastic and the high internal pressure it experiences, over time it can crack or lose its ability to seal at its cap or at the coolant hose and leak.
  • This Rein Automotive expansion tank is manufactured to the exact specifications designated by BMW and is an affordable replacement for your BMW E46, E83, and E53.
The Rein Automotive line of OE quality replacement parts has been around since 2007. Specializing in coolant hoses, undercar parts (suspension & drivetrain), axle boots and wheel bearings, Rein offers most of the common maintenance wear items for your car. With a name like Rein (“pure” in German) you know they must be manufacturing everything to the highest OE standards.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Proposition 65 Warning WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to

Frequently Viewed Together

We found 10 additional part(s) that are frequently viewed together.

Why Buy OEM & Genuine Replacement Auto Parts from AutohausAZ?

Auto parts at wholesale prices is what you will find at AutohausAZ. Have you been searching the web for auto parts for your vehicle? You have come to the right place! Here at Autohaus, we strive to offer low prices on quality replacement parts and providing first rate customer service.

What This Rein Automotive Expansion Tank/Coolant Reservoir Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

00-00 - 323Ci
99-00 - 323i E46
00-00 - 323i Sport Wagon
01-06 - 325Ci E46
01-05 - 325i
01-04 - 325i Sport Wagon
01-05 - 325xi
01-04 - 325xi Sport Wagon
00-00 - 328Ci
99-00 - 328i E46
01-06 - 330Ci E46
01-05 - 330i
01-05 - 330xi
04-10 - X3 2.5i, 3.0i, 3.0si, xDrive30i
01-06 - X5 3.0i