Sort By

123
Sort by Name Sort by Price

Expansion Tanks

A BMW expansion tank ensures that your radiator is always full, even when cold, and provides a way for hot fluid to expand without releasing fluid on the road below you. Factory BMW tanks are made of plastic, and will eventually crack, leak and fail. BMW expansion tanks should be inspected during routine maintenance. We recommend replacing the expansion tank as a preventatively whenever you replace the radiator and coolant hoses. We also offer high-quality aluminum replacement tanks for some BMWs. Use our SEARCH BY MODEL feature to filter these items for your BMW.

Want to learn more about your BMW's cooling system? Check out our BMW cooling system tech page by clicking here.

Need help finding Expansion Tanks for your BMW? Call us at 877.639.9648, email us, or live chat for expert assistance.

17111707540_TN.jpg

Coolant Expansion Tank - 17 11 1 707 540

Replacement for your aged or damaged expansion tank

Price: $97.99

111.92
View Product
17111712641_TN.jpg

Coolant Expansion Tank - 17 11 1 712 641

Replacement for your aged or damaged expansion tank

Price: $99.99

111.92
View Product
17137552546_TN.jpg

Coolant Expansion Tank - 17 13 7 552 546 - URO

Aftermarket Expansion Tank With Level Sensor

Price: $44.99

140.86
View Product
BMW-17112225352-wp-192.jpg

Coolant Expansion Tank - E28 M5, 524td

Genuine BMW Part Number 17112225352 / 17-11-2-225-352

Price: $149.99

170.18
View Product
17111712835_TN.jpg

Coolant Expansion Tank - E30 / E36 / Z3 4 cylinder, E34 525i - 17111712835

Replacement for your aged or damaged expansion tank

Price: $23.99

View Product
17111712196_TN.jpg

Coolant Expansion Tank - E32 735i & 735iL

Replacement for your aged or damaged expansion tank

Price: $92.99

105.48
View Product
BMW-17111719110-17-11-1-719-110-SF-Genuine-BMW-Coolant-Expansion-Tank-sm.jpg

Coolant Expansion Tank - E34 530i 540i - E32 740i 740il 750il

Genuine BMW # 17111719110

Price: $112.99

130.00
View Product
BMW-17111436381-17-11-1-436-381-SF-OEM-Coolant-Expansion-Tank-sm.jpg

Coolant Expansion Tank - E39 525i 528i 530i 1999-2003

High Quality Replacement to BMW # 17111436381

Price: $48.40

View Product
17137787039_TN.jpg

Coolant Expansion Tank - E46 (non-M) X3 X5 3.0 - 17117573781

OEM Replacement For Your Aged Or Damaged Expansion Tank

Price: $46.99

View Product
E46M3coolantexpansiontankSmall.jpg

Coolant Expansion Tank - E46 M3

Genuine BMW # 17112283344

Price: $133.76

161.83
View Product
BMW-Part-17137501959_i.jpg

Coolant Expansion Tank - E53 X5 4.4i & 4.8is 2004-2006

High Quality Replacement to BMW # 17137501959

Price: $109.99

134.89
View Product
17138616418-Expansion-Tank-Rein-WP-tn.jpg

Coolant Expansion Tank - F25 X3 F26 X4 28i 28d 35i M40i

High quality, 24 Month Warranty

Price: $63.99

140.86
View Product
17137642158-N20-N26-Exp-Tank-tn.jpg

Coolant Expansion Tank - Genuine BMW - N20 N26 Engines

Genuine BMW Part # 17137642158 (17-13-7-642-158)

Price: $124.99

140.86
View Product
17137642158-Expansion-Tank-URO-tn.jpg

Coolant Expansion Tank - Genuine BMW - N20 N26 Engines

Aftermarket Replacement for BMW Part # 17137642158 (17-13-7-642-158)

Price: $64.99

140.86
View Product
17111741167_TN.jpg

Coolant Expansion Tank - OEM - E31 E38 E39 V8 & V12 - 17111741167

OE Replacement for your aged or damaged expansion tank

Price: $49.99

View Product
BMW-17137542986-17-13-7-542-986-SF-Behr-Hella-Service-Coolant-Expansion-Tank-sm.jpg

Coolant Expansion Tank - OEM - E60/E61 5 Series, E63/E64 6 Series

OEM Replacement Coolant Expansion Tank For Most E60, E61 5-Series and E63/E64 6-Series

Price: $59.99

140.86
View Product
Expansion_Tank_Cap_TN.jpg

Coolant Expansion Tank Cap - E36, E46, E34, E39, E38, X3, X5, Z3, Z4

Keep optimum cooling performance - replace your cap every three years! Aftermarket replacement for BMW part #17117639022.

Price: $6.99

View Product
BMW-17117639020-17-11-7-639-020-SF-Febi-Bilstein-Expansion-Tank-Cap-sm.jpg

Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06 - 17117639020

High quality replacement coolant cap with a 24 Month Warranty

Price: $16.71

18.97
View Product
17117639021-Cap-Expansion-Tank-tn.jpg

Coolant Expansion Tank Cap - E9X M3, E60 E63 F01 E70 E71

Keep optimum cooling performance - replace your cap every three years! OEM-type replacement for BMW part #17117639021.

Price: $16.71

21.36
View Product
BMW-Radiator-Cap-17117639022-Behr-Hella-wp-tn.jpg

Coolant Expansion Tank Cap, OEM - E36, E46, E34, E39, E38, X3, X5, Z3, Z4

Keep optimum cooling performance - replace your cap every three years! OEM replacement for BMW part #17117639022.

Price: $9.99

21.36
View Product
Coolant-Expansion-Tank-Overhaul-Package-E46-AT-wp-tn.jpg

Coolant Expansion Tank Overhaul Package - E46 Automatic

Resolve a leaking E46 expansion tank with one package

Price: $168.99

187.33
View Product
Coolant-Expansion-Tank-Overhaul-Package-E46-Manual-wp-tn.jpg

Coolant Expansion Tank Overhaul Package - E46 Manual

Resolve a leaking E46 expansion tank with one package

Price: $107.99

119.67
View Product
Genuine-BMW-Coolant-Expansion-Tank-Reservoir-E9X-E90-E92-M3-17112283500-1-sm.jpg

Coolant Expansion Tank Reservoir, Genuine BMW - E9X M3

Stock replacement coolant tank for original cooling performance

Price: $141.95

161.83
View Product
Coolant-Expansion-Tank-Behr-17-11-1-723-520-wp-tn.jpg

Coolant Expansion Tank, Behr - E36, E39, Z3 (17111723520)

OEM replacement for your aged or damaged expansion tank

Price: $38.99

View Product
Coolant-Expansion-Tank-E9X-E82-E84-E89-Z4-OEM-17137640514-wp-tn.jpg

Coolant Expansion Tank, Behr - E82 128i/135i, E9X 325i/328i/330i/335i, E89 Z4

Stock replacement coolant tank for original cooling performance

Price: $62.99

134.89
View Product
BMW-17137640514-17-13-7-640-514-SF-Genuine-BMW-Coolant-Expansion-Tank-sm.jpg

Coolant Expansion Tank, BMW - E82 128i/135i, E9X 325i/328i/330i/335i, E89 Z4

Factory replacement coolant tank for original cooling performance

Price: $118.19

134.89
View Product
Complete-Coolant-Expansion-Tank-Rein-17137787039-tn.jpg

Coolant Expansion Tank, Complete - E46 (non-M), X3, X5 3.0 (17117573781)

Complete tank with cap and level sensor

Price: $59.99

88.03
View Product
17111723520_TN.jpg

Coolant Expansion Tank, Febi - E36, E39, Z3 (17111723520)

Replacement for your aged or damaged expansion tank

Price: $29.99

View Product

Coolant Level Sensor O-Ring, CRP - E36 323i/325i/328i/M3, E34 525i, E39 528i/540i

O-ring to seal the level sensor in the expansion tank. OEM-type replacement for BMW part #61311361249.

Price: $0.99

9.70
View Product
BMW-17137553919-wp-192.jpg

Coolant/Washer Level Sensor (installs in expansion tank) - Many BMW (see list)

High Quality Replacement to BMW # 17137553919

Price: $17.36

View Product

Cooling System Plug, Rein - E60, F10, E63, F06/F13, F02

Blind plug used in a variety of places. OEM-type replacement for BMW part #11531436850.

Price: $4.99

8.25
View Product

Cooling System Plug, Rein - F3X, E60, F10, G30, E63, F06/F12/F13, F02, X5/X6

Blind plug used in a variety of places. OEM-type replacement for BMW part 11531439134.

Price: $6.99

11.33
View Product
Moroso_E36_Expansion_Tank_1_TN.jpg

E36 Aluminum Expansion Tank by Moroso

Factory-style replacement aluminum coolant expansion tank for all 6-cylinder E36 models

Price: $299.99

View Product
BMW-E46-325i-325ci-330i-330ci-328i-323i-non-M-Aluminum-Expansion-Tank-Moroso-27483-1-sm.jpg

E46 323i/325i/328i/330i Aluminum Expansion Tank by Moroso

Prevent catastrophy by replacing your aged, fragile plastic tank with a high-quality, long-lasting aluminum tank

Price: $299.99

View Product
Moroso_E46M3_ExpansionTank_1_TN.jpg

E46 M3 Aluminum Expansion Tank by Moroso

Prevent catastrophe by replacing your aged, fragile plastic tank with a high-quality, long-lasting aluminum tank

Price: $299.99

View Product
17107514964.jpg

Expansion Tank - 17107514964

Aftermarket Replacement # 17 10 7 514 964, 24 Month Warranty

Price: $49.37

View Product
17111712196.jpg

Expansion Tank - 17111712196

Aftermarket Replacement # 17 11 1 712 196, 24 Month Warranty

Price: $33.22

View Product
17111712835.jpg

Expansion Tank - 17111712835 - E36 / Z3 4-Cylinder and E34 525i

Aftermarket Replacement # 17 11 1 712 835, 24 Month Warranty

Price: $27.92

View Product
17117573751.jpg

Expansion Tank - 17117573751 - E85 E86 Z4 Non-M

Aftermarket Replacement # 17 11 7 573 751, 24 Month Warranty

Price: $57.22

View Product
BMW-17138621092-17-13-8-621-092-SF-Behr-Hella-Service-Coolant-Expansion-Tank-sm.jpg

Expansion Tank - 17138621092 - E70,E71,F15,F16, F85, F86 - Behr

OEM Expansion Tank With Level Sensor

Price: $74.99

140.86
View Product

Sort By

123
Sort by Name Sort by Price

What customers are saying...

  • I am extremely pleased with this order. The price was competitive and your expedited delivery charge was surprisingly low. I needed the part fast and you exceeded my expectations. I especially appreciate your gentleman who over the phone ensured me that the part was indeed in stock and would be shipped immediately.
    - Allan Read More
  • I’ve never dealt with a true “race” shop like BW and I really have enjoyed the experience. I always feel like I’m getting the best advice, and suggestions for true race car set up. Your technical expertise on even the minute details of building race cars is really impressive, and some I value greatly...
    - Paul Read More
  • I just can't express enough how impressed I am with you guys. Thanks so much for the great service from start to finish, and always done with a smile and as professional as possible. Our particular interaction has extended over many months and never have I felt that I wasn't getting first-class service...
    - Chris Read More
  • I just wanted to say what positive experiences I've had over the past few weeks. Your BimmerWorld sales staff have gone above and beyond to help me out, between their service and taking the time to answer all my questions, I'll be buying my parts from BimmerWorld whenever possible...
    - Aaron Read More