Coolant Expansion Tank - Replacement for BMW G20 330i

G20

$95.99

Buy on Amazon

Key Features

Replacement expansion tank for BMW G20 330i
Stock-style coolant reservoir for leak or crack repair
Good choice for failed seam or damaged level area
Fits cooling system service, not a performance upgrade
Match hose ports and mounts to original tank first
Smart to inspect cap and hoses during install

Product Details

Category: Expansion Tanks
ASIN: B0DK1VH4PN

Check if it fits your BMW

Coolant Expansion Tank - Replacement for BMW G20 330i — Overview

This is a replacement coolant expansion tank for the G20 330i. If your original tank is cracked, seeping at the seam, or the level sensor area is giving you trouble, this is the part you replace instead of trying to nurse the old one along. On these cars, even a small coolant leak turns into a recurring headache fast.

I’d pick this when you need a straightforward stock-style replacement and do not want to pay dealer pricing for a basic plastic reservoir. It makes sense for daily driven G20 330i cars where the goal is restoring the cooling system, not changing anything about how it works. Just confirm connector style, hose routing, and mounting points against your original tank before ordering, since cooling parts are one of those areas where small fitment differences matter.