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BMW Cooling System Thermostat Kits

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Water Pump And Thermostat Kit

ES#2777338 - 11517586925KT5 - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat. - Assembled By ECS - BMW
ECS Tuning recommends this product.

Includes everything you need to replace your water pump and thermostat. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2777338
Mfg#:
11517586925KT5
In Stock
ON SALE! SAVE 25%
$424.99

This product was last offered at the strikethrough price on
05-02-2026

$318.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Water Pump And Thermostat Kit

ES#4056697 - 11518635090KT5 - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat. - Assembled By ECS - BMW

Includes everything you need to replace your water pump and thermostat. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4056697
Mfg#:
11518635090KT5
In Stock
ON SALE! SAVE 31%
$485.99

This product was last offered at the strikethrough price on
06-02-2026

$334.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Performance Water Pump And Thermostat Kit

ES#2804281 - 11517632426KT5 - Performance Water Pump And Thermostat Kit - Includes a 74c race thermostat - Assembled By ECS - BMW

Includes a 74c race thermostat 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804281
Mfg#:
11517632426KT5
In Stock at Vendor
ON SALE! SAVE 20%
$514.99

This product was last offered at the strikethrough price on
05-02-2026

$410.38 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Assembly - N55

ES#4899910 - 11537598865 - Thermostat Assembly - N55 - A common item to crack causing leaks - Wahler - BMW

A common item to crack causing leaks

Brand:
Wahler - Corporate Logo
ES#:
4899910
Mfg#:
11537598865
In Stock
$147.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump And Thermostat Kit with Coolant

Over time, heat cycles degrade the plastic components, internal electronics fail, and you're left stranded with a yellow (or worse, red) coolant warning light on your dash. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
5481358
Mfg#:
11517604027KT2
Ships on Aug 31, 2026
Auto Notify
ON SALE!
$493.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Water Pump And Thermostat Kit

ES#2960474 - 11517604027KT - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat - Assembled By ECS - BMW

Includes everything you need to replace your water pump and thermostat 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2960474
Mfg#:
11517604027KT
Ships on Aug 31, 2026
Auto Notify
ON SALE!
$482.99

This product was last offered at the strikethrough price on
05-02-2026

$468.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump And Thermostat Kit

ES#2777337 - 11517586925KT4 - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat - Genuine BMW - BMW

Includes everything you need to replace your water pump and thermostat

Brand:
Genuine BMW - Corporate Logo
ES#:
2777337
Mfg#:
11517586925KT4
Ships in 1 day
$1062.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Mechanical Water Pump & Thermostat Kit - Gen1 B58

ES#4780501 - 11518632585KT - Mechanical Water Pump & Thermostat Kit - Gen1 B58 - Includes the water pump (w/o support housing), gaskets, hoses, and the thermostat also known as the "heat management module" - Assembled By ECS - BMW

Includes the water pump (w/o support housing), gaskets, hoses, and the thermostat also known as the "heat management module" 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4780501
Mfg#:
11518632585KT
Ships on Aug 31, 2026
Auto Notify
ON SALE! SAVE 13%
$524.99

This product was last offered at the strikethrough price on
05-02-2026

$457.45 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2713411 - 11537601158KT1 - Thermostat Replacement Kit - Includes coolant - Assembled By ECS - BMW

Includes coolant 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2713411
Mfg#:
11537601158KT1
In Stock
ON SALE! SAVE 24%
$106.99

This product was last offered at the strikethrough price on
05-02-2026

$81.44 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#4772481 - 11537642854KT - Thermostat Replacement Kit - Includes new Genuine BMW Heat Management Module (Thermostat) & 1 gallon of BMW coolant/antifreeze - Genuine BMW - BMW

Includes new Genuine BMW Heat Management Module (Thermostat) & 1 gallon of BMW coolant/antifreeze For vehicles produced before 2018.

Brand:
Genuine BMW - Corporate Logo
ES#:
4772481
Mfg#:
11537642854KT
Ships in 1 day
$599.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

M52TU/M54 Mechanical Thermostat Conversion

ES#4709399 - 008785LA01T - M52TU/M54 Mechanical Thermostat Conversion - Upgrade from your all-in-one plastic thermostat assembly to a stout and reliable billet mechanical thermostat setup! - Turner Motorsport - BMW

Upgrade from your all-in-one plastic thermostat assembly to a stout and reliable billet mechanical thermostat setup! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4709399
Mfg#:
008785LA01T
Ships on Oct 19, 2026
ON SALE!
Starting at $312.37 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Housing & Heat Management Module Kit - Level 2

Includes the components needed to replace the two biggest B48 cooling issues, plus most of the "while you are in there" parts we highly recommend replacing - featuring an Aluminum Oil Filter Housing, Coolant Thermostat Module, and coolant pump assembly! 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles without Energy Recovery System (S1CEA)
For later models with the B48 Gen2 (B48D) engine only - Not compatible with earlier Gen1 engines

Brand:
Assembled By ECS - Corporate Logo
ES#:
5425175
Mfg#:
G2XB48DOFHL2KT
Back Ordered
Auto Notify
ON SALE!
$1733.99

This product was last offered at the strikethrough price on
06-15-2026

$1631.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Mechanical Water Pump & Thermostat Kit - Gen1 B58

ES#4464586 - 11517643067KT - Mechanical Water Pump & Thermostat Kit - Gen1 B58 - Includes the water pump (with support housing), gaskets, hoses, and the thermostat also known as the "heat management module" - Genuine BMW - BMW

Includes the water pump (with support housing), gaskets, hoses, and the thermostat also known as the "heat management module"

Brand:
Genuine BMW - Corporate Logo
ES#:
4464586
Mfg#:
11517643067KT
Ships in 1 day
$1406.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2718468 - 11537836155KT - Thermostat Replacement Kit - Includes thermostat with o-ring, and coolant - Genuine BMW - BMW

Includes thermostat with o-ring, and coolant

Brand:
Genuine BMW - Corporate Logo
ES#:
2718468
Mfg#:
11537836155KT
In Stock
$176.99

This product was last offered at the strikethrough price on
06-03-2026

$174.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2582085 - N524TSTKT1 - Thermostat Replacement Kit - Includes mounting hardware and coolant - Wahler - BMW

Includes mounting hardware and coolant

Brand:
Wahler - Corporate Logo
ES#:
2582085
Mfg#:
N524TSTKT1
In Stock
ON SALE!
$112.99

This product was last offered at the strikethrough price on
03-26-2026

$106.43 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Water Pump And Thermostat Kit - N54

ES#2763074 - 11517632426KT4 - Water Pump And Thermostat Kit - N54 - Includes everything you need to replace your water pump and thermostat. Featuring OE water pump and thermostat. - Assembled By ECS - BMW

Includes everything you need to replace your water pump and thermostat. Featuring OE water pump and thermostat. 10X Entries For Our 25th Anniversary Sweepstakes!
Featuring all German-made components - water pump, Wahler thermostat, Genuine BMW coolant

Brand:
Assembled By ECS - Corporate Logo
ES#:
2763074
Mfg#:
11517632426KT4
In Stock
ON SALE!
$584.00

This product was last offered at the strikethrough price on
07-14-2026

$578.44 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

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