BMW Genuine Expansion Tank - Coolant Reservoir for E92

E92

$197.89

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Key Features

Genuine BMW expansion tank for E92 applications
Direct replacement for cracked or brittle original reservoir
Maintains proper coolant expansion and fill point
Good choice during full cooling system refresh
Check cap and level sensor while replacing tank
Old hoses can snap loose during removal

Product Details

Category: Expansion Tanks
ASIN: B00EE233JA

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BMW Genuine Expansion Tank - Coolant Reservoir for E92 — Overview

This is a genuine BMW coolant expansion tank for the E92 cooling system. It is the plastic reservoir that handles coolant expansion and gives you the correct fill point and level monitoring setup. On these cars, old tanks get brittle from heat cycles and can crack without much warning, especially once the rest of the cooling system is the same age.

I would pick a genuine tank here over the cheaper off-brand options because cooling parts on older BMWs are not where I like to gamble. Fitment, sensor sealing, and plastic quality matter more than saving a few bucks if you are already in there chasing a leak or doing preventive maintenance. Best time to replace it is when you see hairline cracks, dried coolant residue around the seams, or you are refreshing hoses and the cap at the same time.