A-Premium Coolant Expansion Tank for BMW E39 525i 528i 530i
by A-Premium
Key Features
- OE replacement
- Direct fit
- Includes cap
Product Details
- Brand
- A-Premium
- Category
- Expansion Tanks
- ASIN
- B07SVXSYLZ
Check if it fits your BMW
A-Premium Coolant Expansion Tank for BMW E39 525i 528i 530i — Overview
Direct-fit replacement coolant expansion tank for the E39 525i, 528i, and 530i, referencing OE part number 17111436381. The factory plastic reservoir on these cars is well past its service life in most examples, and cracking or weeping at the seams is a common failure mode that can quietly cause coolant loss before it becomes obvious. This A-Premium unit includes the cap, which is often overlooked but is equally prone to losing its pressure rating over time. The E39's cooling system is a known maintenance area, and replacing the reservoir is straightforward and overdue on most survivors at this point.
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