BMW E82 Coolant Expansion Tank Kits

N20/N52/N54 Heavy Duty Aluminum Expansion Tank Kit

As expansion tanks age, they are prone to cracking or even exploding. Replace your factory plastic coolant reservoir with a Turner Heavy Duty aluminum tank for durability and piece of mind! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ES#:: 4635669
Mfg#:: 008378LA02

Qty: Availability:

In Stock

ON SALE! SAVE 20%

$469.99

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

$375.99 USD

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on orders $49 and up

Lifetime Replacement

N55 Heavy Duty Aluminum Expansion Tank Kit

The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ES#:: 4817875
Mfg#:: 050610LA02

Qty: Availability:

Ships on Aug 14, 2026

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ON SALE! SAVE 30%

$448.99

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

$314.29 USD

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Lifetime Replacement

N54 Aluminum Coolant Expansion Tank Relocation Kit - 135i

Ditch the weak, factory plastic coolant expansion tank and free up space on the hot side of your engine bay! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Compatible with factory/aftermarket cold side intakes as well as hot side intakes!

Brand:
ES#:: 3647096
Mfg#:: 021942TMS14

Qty: Availability:

Ships on Aug 10, 2026

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ON SALE! SAVE 15%

$815.99

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

$693.59 USD

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Lifetime Replacement

Expansion Tank Replacement Kit

Includes everything you need to bolt on a brand new expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!