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BMW Coolant Expansion Tanks for BMW 1 Series E82 (2008-2013)

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.

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Expansion Tank Replacement Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:15744017

Part#: N524ECSTNKKT-KT

In Stock

Sale - Save 40% $ 166.99

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

$ 100.95 USD

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Sale - Save 40%

$ 166.99

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

$ 100.95 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break. You want to keep all the coolant in your vehicle in the cooling system. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it. The kit includes: Expansion tank with level sensor URO expansion tank cap Genuine BMW expansion tank grommet Genuine BMW mounting bolts

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Cooling System Refresh Kit - Level 2

10X Entries Into Our F80 M3 Sweepstakes

T#:15677500

Part#: 82141467704-KT

Back Ordered

Sale - Save 20% $ 832.99

This product was last offered at the strikethrough price on
05-03-2026

$ 670.24 USD

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Sale - Save 20%

$ 832.99

This product was last offered at the strikethrough price on
05-03-2026

$ 670.24 USD

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As your mileage increases, so does wear and tear on your engine's cooling components. Cooling system components live a rough life, going through extreme temperature changes and being exposed to the elements. A cooling system failure can, and probably will leave you stranded. For automatic transmission (or DCT) vehicles only This kit includes: Thermostat with mounting hardware 1 gallon of BMW coolant Water pump with mounting hardware Primary cooling system hoses and radiator hose gasket, and bleeder screw Expansion tank with cap Accessory belt

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Cooling System Refresh Kit - Level 2 - E9x, E82, E88, Z4

10X Entries Into Our F80 M3 Sweepstakes

T#:42099868

Part#: 11537558523TKT

Back Ordered

Sale - Save 19% $ 829.99

This product was last offered at the strikethrough price on
05-03-2026

$ 668.46 USD

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Sale - Save 19%

$ 829.99

This product was last offered at the strikethrough price on
05-03-2026

$ 668.46 USD

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Keep your BMW running at the proper temperature and avoid costly engine repairs with the Cooling System Refresh Kit, the complete maintenance solution trusted by enthusiasts and professionals alike.

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MMX 90mm Billet Coolant Expansion Tank Cap | BMW

T#:29002094

Part#: MMR03-1502

Ships in 2 Business Days

$ 127.99 USD

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$ 127.99 USD

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The MMX Performance 90mm billet coolant expansion cap for BMWs has been designed from the ground up in the UK, from a solid piece of billet aluminum. Each cap was designed to directly replace the OE cap, not merely stuck in place. Fitment is for models with the matching OE (17 11 7 639 021) part number.

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AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbo...

T#:39497984

Part#: BM-0803-GC

Ships in 7 Business Days

$ 74.99 USD

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$ 74.99 USD

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Turner Motorsport offers the AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbon as the perfect addition for BMW owners looking to elevate their engine bay’s appearance with premium materials and precision engineering.

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