Find Parts That Fit Your Vehicle

Home
Cooling
Expansion Tanks

BMW Coolant Expansion Tanks

On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.

Sort By:

BMW E9X Z4 E8X Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:402142

Part#: 17137640514

In Stock

$ 70.99

This product was last offered at the strikethrough price on
06-22-2026

$ 70.35 USD

Add to Wish List

Qty

$ 70.35 USD

Add to Wish List

Includes level sensor

Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:592020

Part#: 17137640515

In Stock

$ 97.99 USD

Add to Wish List

Qty

$ 97.99 USD

Add to Wish List

Includes level sensor

Rein Coolant Expansion Tank - E46, E53, E83

2X Entries Into Our F80 M3 Sweepstakes

T#:402141

Part#: 17117573781

In Stock

$ 76.39 USD

Add to Wish List

Qty

$ 76.39 USD

Add to Wish List

Includes cap and level sensor

OEM Rein Expansion Tank - F01,F06,F10,F12,F13

2X Entries Into Our F80 M3 Sweepstakes

T#:555024

Part#: 17137647283

Ships in 1 Business Day

$ 118.99

This product was last offered at the strikethrough price on
10-22-2026

$ 77.95 USD

Add to Wish List

Qty

$ 77.95 USD

Add to Wish List

Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

his item fits the following BMW Chassis:
F01,F02,F06,F10,F12,F13

Fits BMW Engines including:
N54,N55,N57N

Show More Show Less

Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:591959

Part#: 17111741167

Ships in 1 Business Day

$ 69.99

This product was last offered at the strikethrough price on
10-22-2026

$ 54.59 USD

Add to Wish List

Qty

$ 54.59 USD

Add to Wish List

Plastic has a limited lifespan - replace every 80,000 miles

Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:388723

Part#: 17137823626

In Stock

$ 78.99

This product was last offered at the strikethrough price on
10-15-2026

$ 47.59 USD

Add to Wish List

Qty

$ 47.59 USD

Add to Wish List

Mounts towards the front of the engine bay

Expansion Tank Mounting Plate

2X Entries Into Our F80 M3 Sweepstakes

T#:402140

Part#: 17111436250

In Stock

$ 70.99

This product was last offered at the strikethrough price on
10-22-2026

$ 58.29 USD

Add to Wish List

Qty

$ 58.29 USD

Add to Wish List

BMW E39 Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:388645

Part#: 17111436381

In Stock at Vendor

$ 87.99 USD

Add to Wish List

Qty

$ 87.99 USD

Add to Wish List

BMW E39 Coolant Expansion Tank is an essential component designed to maintain the proper coolant level in your vehicle's cooling system. Manufactured with high-quality materials, this expansion tank ensures reliable performance and durability, preventing engine overheating by accommodating the expansion of coolant as it heats up. The kit includes a level sensor and cap, providing everything needed for a seamless installation. This expansion tank is specifically engineered to meet the exact specifications of your BMW E39, offering a perfect fit and optimal functionality.

Complete Kit: Includes level sensor and cap for easy installation.
High-Quality Construction: Built with durable materials for long-lasting performance.
Prevents Overheating: Helps manage coolant expansion, ensuring engine protection.
Exact Fit: Designed to meet the precise specifications of your BMW E39.
Enhanced Reliability: Ensures proper coolant level maintenance for optimal cooling system function.

Show More Show Less

Febi Expansion Tank Mounting Plate - E83

We Price Match - Give Us A Call or Chat!

T#:1196172

Part#: 17113400017

Ships in 1 Business Day

$ 95.99

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

$ 92.99 USD

Add to Wish List

Qty

$ 92.99 USD

Add to Wish List

Secures the expansion tank to the radiator

Rein Expansion Tank Mounting Plate - E83

2X Entries Into Our F80 M3 Sweepstakes

T#:402421

Part#: 17113400017

Ships in 1 Business Day

$ 166.99

This product was last offered at the strikethrough price on
10-20-2026

$ 63.95 USD

Add to Wish List

Qty

$ 63.95 USD

Add to Wish List

Secures the expansion tank to the radiator

Rein Coolant Expansion Tank - E60, E61, E63, E64

2X Entries Into Our F80 M3 Sweepstakes

T#:402160

Part#: 17137542986

Ships in 1 Business Day

$ 82.99

This product was last offered at the strikethrough price on
10-22-2026

$ 66.09 USD

Add to Wish List

Qty

$ 66.09 USD

Add to Wish List

Includes fluid level sensor

Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:592015

Part#: 17137501959

Ships in 3 Business Days

$ 74.99

This product was last offered at the strikethrough price on
10-22-2026

$ 55.99 USD

Add to Wish List

Qty

$ 55.99 USD

Add to Wish List

Includes vent screw and leveling switch

Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:591949

Part#: 17107514964

Back Ordered

$ 80.99

This product was last offered at the strikethrough price on
10-22-2026

$ 58.95 USD

Add to Wish List

Qty

$ 58.95 USD

Add to Wish List

Includes bleeder screw

OEM Rein Expansion Tank - E90 335d

2X Entries Into Our F80 M3 Sweepstakes

T#:555023

Part#: 17138570079

Ships in 3 Business Days

$ 124.99

This product was last offered at the strikethrough price on
10-22-2026

$ 82.99 USD

Add to Wish List

Qty

$ 82.99 USD

Add to Wish List

Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

This item fits the following BMW Chassis:
E90

Fits BMW Engines including:
M57

Show More Show Less

Rein Coolant Expansion Tank - E70

2X Entries Into Our F80 M3 Sweepstakes

T#:592030

Part#: 17138621092

In Stock at Vendor

$ 100.99

This product was last offered at the strikethrough price on
10-22-2026

$ 68.39 USD

Add to Wish List

Qty

$ 68.39 USD

Add to Wish List

Replace your cracked or faded tank

Rein Expansion Tank Mounting Plate - E46, Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:402139

Part#: 17111436251

Ships in 1 Business Day

$ 80.99

This product was last offered at the strikethrough price on
10-22-2026

$ 62.79 USD

Add to Wish List

Qty

$ 62.79 USD

Add to Wish List

Mounts to the side of the radiator for retaining the expansion tank

Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:593074

Part#: 17137601948

Ships in 3 Business Days

$ 118.99

This product was last offered at the strikethrough price on
10-22-2026

$ 84.09 USD

Add to Wish List

Qty

$ 84.09 USD

Add to Wish List

Cooling system expansion tank

Intercooler Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:584477

Part#: 17137647281

In Stock at Vendor

$ 71.99

This product was last offered at the strikethrough price on
10-22-2026

$ 68.95 USD

Add to Wish List

Qty

$ 68.95 USD

Add to Wish List

Rein Coolant Expansion Tank - E70

2X Entries Into Our F80 M3 Sweepstakes

T#:592023

Part#: 17137647290

Ships in 3 Business Days

$ 85.99 USD

Add to Wish List

Qty

$ 85.99 USD

Add to Wish List

Plastic expansion tanks have a limited lifespan - replace every 80,000 miles

Expansion Tank Mounting Plate

2X Entries Into Our F80 M3 Sweepstakes

T#:591946

Part#: 17101439110

Ships in 3 Business Days

$ 80.99

This product was last offered at the strikethrough price on
10-22-2026

$ 63.95 USD

Add to Wish List

Qty

$ 63.95 USD

Add to Wish List

Rein Coolant Expansion Tank - E65, E66

2X Entries Into Our F80 M3 Sweepstakes

T#:593077

Part#: 17137647713

Ships in 3 Business Days

$ 99.99 USD

Add to Wish List

Qty

$ 99.99 USD

Add to Wish List

Replace your cracked or faded tank

Febi Coolant Expansion Tank - E31, E38, E39

We Price Match - Give Us A Call or Chat!

T#:381841

Part#: 17111741167

Special Order: No Guaranteed ETA

$ 90.99 USD

Add to Wish List

Qty

$ 90.99 USD

Add to Wish List

Replace your cracked or faded expansion tank.

Select Vehicle

Purpose

Category

Home
Cooling

Expansion Tanks

Brand

Price

Shipping