Service Kits for BMW 3 Series F31 (2014+)

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The water pump is a known failure point on most BMWs, new and old. Sometimes it's best to completely service this area. Here you'll find water pump service kits!
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Water Pump & Thermostat Kit - Gen 1 B46 2.0L
Water Pump & Thermostat Kit - Gen 1 B46 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:35863149
Part#: 11518638026TKT
Ships on Jul 29, 2026
$ 681.66 USD
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$ 681.66 USD
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BMW's cooling system has long been a known weak spot, with the water pump and thermostat being two of the most common trouble areas. This remains true even in the latest B-Series engines found in 2016 and newer BMW models. This kit includes a brand-new OEM Pierburg water pump, a Bremmen thermostat (now referred to as a Heat Management Module), and one gallon of BMW's G48 coolant concentrate (enough to make two gallons of 50/50 coolant). Avoid spending thousands at the dealership or over $600 on Genuine BMW parts! These components can be replaced with high-quality OEM parts in just an afternoon using basic hand tools.
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Water Pump & Thermostat Kit - BMW F30/F31 328d, F25 X3 28d xDrive N47 2.0L
Water Pump & Thermostat Kit - BMW F30/F31 328d, F25 X3 28d xDrive...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:48160285
Part#: 11518516204KT2
Ships on Sep 29, 2026
New Item
Sale - Save 6% $ 314.99

This product was last offered at the strikethrough price on
03-04-2026

$ 296.95 USD
Free Shipping on orders $49 and up
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Sale - Save 6%
$ 314.99

This product was last offered at the strikethrough price on
03-04-2026

$ 296.95 USD
Free Shipping on orders $49 and up
Add to Wish List
It is important that your coolant system is serviced at regular intervals to ensure a long life. Over time, coolant systems are exposed to high temperatures and repeated thermal cycling, which causes warping, cracking, and hardening of plastics and rubber components in the coolant system. This can lead to coolant leaks and overheating, which can result in extensive engine damage if not resolved in a timely manner. This Water Pump & Thermostat kit helps to address a few of the most problematic parts, replacing these items entirely to keep your cooling system running optimally and efficiently.
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Rein Water Pump Service Kit - N20
Rein Water Pump Service Kit - N20
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:14023850
Part#: 11518635089-1
Ships in 3 Business Days
$ 777.99 USD
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$ 777.99 USD
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Kits include: water pump thermostat assembly head to thermostat hose w/ aluminum flange WP to engine hose WP to thermostat hose all necessary clamps and hardware This Rein water pump service kit addresses common coolant hose plastic flange failure and ensures that the water pump replacement repair is done right the first time. The water pump and thermostat are OEM Use of OE or Pentosin NF-G11 coolant is recommended
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Genuine BMW Water Pump And Thermostat Kit - N20 2.0L
Genuine BMW Water Pump And Thermostat Kit - N20 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:384041
Part#: 11518635089KT
Ships in 4 Business Days
$ 811.99 USD
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$ 811.99 USD
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Genuine BMW Water Pump & Thermostat Kit - Gen 1 B46 2.0L
Genuine BMW Water Pump & Thermostat Kit - Gen 1 B46 2.0L ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:35863148
Part#: 11518638026KT
In Stock
$ 754.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 754.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The cooling system has always been a weak point for BMW. Two of the biggest issues are the water pump and thermostat. This continues to be true even on the newest B-Series engines found in 2016+ BMWs. This kit includes a brand new Genuine BMW water pump, a new thermostat (now referred to as a Heat Management Module), and 1 gallon of BMW's G48 coolant concentrate (makes 2 gallons of 50/50 coolant). Don't spend thousands of dollars at the dealership, these can easily be replaced in an afternoon with basic mechanic's tools.
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BMW Auxiliary Water Pump
BMW Auxiliary Water Pump
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
URO - Corporate Logo
T#:46753502
Part#: 11518635089
Ships in 1 Business Day
$ 377.99 USD
Free Shipping on orders $49 and up
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$ 377.99 USD
Free Shipping on orders $49 and up
Add to Wish List
If your water pump is on its way out, you might spot coolant leaks or hear a faint whining sound from under the hood. Don’t wait—if you suspect it’s failing, replace it before it leaves you stranded. The tricky part with electric water pumps is that they can fail silently—no noise, no leaks—just sudden overheating. Stay alert for early warning signs that it’s time to swap out your water pump and keep your cooling system running strong.
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Rein Water Pump Service Kit - N20
Rein Water Pump Service Kit - N20
For production years 2014-2016 For production years 2013-2015
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:14023854
Part#: 11518635089-2
In Stock at Vendor
$ 1,309.99

This product was last offered at the strikethrough price on
05-07-2026

$ 1,272.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 1,272.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Kits include: water pump thermostat assembly head to thermostat hose w/ aluminum flange WP to engine hose WP to thermostat hose all necessary clamps and hardware This Rein water pump service kit addresses common coolant hose plastic flange failure and ensures that the water pump replacement repair is done right the first time. The water pump and thermostat are OEM Use of OE or Pentosin NF-G11 coolant is recommended
Show More Show Less
Genuine BMW Water Pump & Thermostat Kit - BMW F30/F31 328d, F25 X3 28d xDrive N47 2.0L
Genuine BMW Water Pump & Thermostat Kit - BMW F30/F31 328d, F25 X...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:48160261
Part#: 11518516204KT
Ships in 4 Business Days
New Item
$ 451.99

This product was last offered at the strikethrough price on
03-04-2026

$ 437.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 437.99 USD
Free Shipping on orders $49 and up
Add to Wish List
It is important that your coolant system is serviced at regular intervals to ensure a long life. Over time, coolant systems are exposed to high temperatures and repeated thermal cycling, which causes warping, cracking, and hardening of plastics and rubber components in the coolant system. This can lead to coolant leaks and overheating, which can result in extensive engine damage if not resolved in a timely manner. This Water Pump & Thermostat kit helps to address a few of the most problematic parts, replacing these items entirely to keep your cooling system running optimally and efficiently.
Show More Show Less

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