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BMW Coolant Expansion Tank Hoses

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N55 Exact-Fit Silicone Expansion Tank Hose

ES#4877300 - 006402LA03 - N55 Exact-Fit Silicone Expansion Tank Hose - Connects the coolant expansion tank to the upper radiator hose. Featuring durable silicone construction & pre-installed factory connectors for easy installation! - ECS - BMW

Connects the coolant expansion tank to the upper radiator hose. Featuring durable silicone construction & pre-installed factory connectors for easy installation! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4877300
Mfg#:
006402LA03
In Stock
ON SALE! SAVE 30%
$101.99

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

$71.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Water Pipe Connecting Line

ES#37983 - 17112229053 - E46 M3 Water Pipe Connecting Line - Connects the expansion tank to the upper radiator hose - Genuine BMW - BMW

Connects the expansion tank to the upper radiator hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37983
Mfg#:
17112229053
In Stock at Vendor
$177.99

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

$172.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Expansion Tank Relocation Coolant Hose

ES#4723175 - 053082LA01 - Silicone Expansion Tank Relocation Coolant Hose - 60" silicone performance coolant hose featuring a molded 90 degree bend for neat installs. Used as a replacement coolant hose for the Turner N54 coolant expansion tank relocation. - Turner Motorsport - BMW

60" silicone performance coolant hose featuring a molded 90 degree bend for neat installs. Used as a replacement coolant hose for the Turner N54 coolant expansion tank relocation. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4723175
Mfg#:
053082LA01
In Stock
ON SALE! SAVE 16%
$73.99

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

$61.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exact-fit Water Pipe Connecting Line

ES#3230761 - 013178ecs - Exact-fit Water Pipe Connecting Line - Connects the expansion tank to the upper radiator hose. Engineered in-house with perfectly formed fitment for a stronger, cleaner install. - ECS - BMW

Connects the expansion tank to the upper radiator hose. Engineered in-house with perfectly formed fitment for a stronger, cleaner install. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3230761
Mfg#:
013178ECS
In Stock
ON SALE! SAVE 30%
$155.99

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

$109.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2698252 - 17138610819 - Expansion Tank - Genuine BMW - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2698252
Mfg#:
17138610819
Ships in 1 day
6% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$236.99

This product was last offered at the strikethrough price on
06-04-2026

$221.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E30 Over Flow Hose

ES#130509 - 51731911369 - E30 Over Flow Hose - Allows coolant overflow to escape from the expansion tank - Genuine BMW - BMW

Allows coolant overflow to escape from the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
130509
Mfg#:
51731911369
Ships in 1-3 days
2% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$45.99

This product was last offered at the strikethrough price on
06-04-2026

$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Hose - Expansion Tank to Water Pipe

ES#25070 - 11537505831 - Water Hose - Expansion Tank to Water Pipe - Genuine BMW - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
25070
Mfg#:
11537505831
In Stock
$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS S54 Exact-fit Waterpipe Connecting Line

ES#3230751 - 013178ecsKT - ECS S54 Exact-fit Waterpipe Connecting Line - Engineered in-house with perfectly formed fitment for a stronger, cleaner install. - ECS - BMW

Engineered in-house with perfectly formed fitment for a stronger, cleaner install. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3230751
Mfg#:
013178ECSKT
Ships on Aug 10, 2026
Auto Notify
ON SALE! SAVE 30%
$145.99

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

$102.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Hose

ES#2775491 - 17122284688 - Oil Cooler Hose - Hose from the auxiliary radiator in the wheel housing to the main Radiator. - Genuine BMW - BMW

Hose from the auxiliary radiator in the wheel housing to the main Radiator. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2775491
Mfg#:
17122284688
Ships in 1 day
6% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$109.99

This product was last offered at the strikethrough price on
06-04-2026

$102.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Coolant Hose

ES#4181361 - 17128654824 - Expansion Tank Coolant Hose - Connects the cylinder head to the expansion tank - Genuine BMW - BMW

Connects the cylinder head to the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later models that feature the B48N/B48P engine

Brand:
Genuine BMW - Corporate Logo
ES#:
4181361
Mfg#:
17128654824
In Stock
7% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$57.99

This product was last offered at the strikethrough price on
06-04-2026

$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator To Expansion Tank Hose - 1 Meter

ES#37639 - 17111150232 - Radiator To Expansion Tank Hose - 1 Meter - Runs from the radiator to the expansion tank - Genuine BMW - BMW

Runs from the radiator to the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37639
Mfg#:
17111150232
Ships in 1 day
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Line

ES#38414 - 17127536235 - Coolant Line - Connects to the bottom of the expansion tank - Genuine BMW - BMW

Connects to the bottom of the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
38414
Mfg#:
17127536235
Ships in 1 day
6% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$61.99

This product was last offered at the strikethrough price on
06-04-2026

$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E70 Coolant Line

ES#3219179 - 17127536235 - E70 Coolant Line - Connects to the bottom of the expansion tank - Rein - BMW

Connects to the bottom of the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3219179
Mfg#:
17127536235
In Stock
$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose

ES#2802712 - 17121712736 - Expansion Tank Hose - Prevents coolant spills - Rein - BMW

Prevents coolant spills affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802712
Mfg#:
17121712736
In Stock
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Return Hose

ES#38370 - 17127519258 - Expansion Tank Return Hose - Connects between the top of the radiator and the bottom of the expansion tank - Genuine BMW - BMW

Connects between the top of the radiator and the bottom of the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
38370
Mfg#:
17127519258
Ships in 1 day
2% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$127.99

This product was last offered at the strikethrough price on
06-04-2026

$124.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Hose

ES#5341132 - 17127535528 - Coolant Expansion Tank Hose - Connects the coolant expansion tank to the cylinder head - Rein - BMW

Connects the coolant expansion tank to the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Pre-LCI models with the earlier Gen1 B46 engine only

Brand:
Rein - Corporate Logo
ES#:
5341132
Mfg#:
17127535528
Back Ordered
$93.99

This product was last offered at the strikethrough price on
05-14-2026

$51.99 USD
Free Shipping
on orders $49 and up

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