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This product was last offered at the strikethrough price on
10-20-2026
This product was last offered at the strikethrough price on
10-20-2026
This product was last offered at the strikethrough price on
08-26-2026
This product was last offered at the strikethrough price on
08-26-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
10-13-2026
This product was last offered at the strikethrough price on
10-13-2026
This product was last offered at the strikethrough price on
07-15-2026
This product was last offered at the strikethrough price on
07-15-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
10-19-2026
This product was last offered at the strikethrough price on
10-19-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
06-13-2026
This product was last offered at the strikethrough price on
06-13-2026
Replace the flimsy plastic bleeder screw used in the coolant expansion tank or in one of the cooling system hoses with this high quality, durable, aluminum bleeder screw. The stock plastic screw can deform over time due to heat or even regular use. We have even seen the head of the screw snap off, leaving the threaded body stuck in the expansion tank. This aluminum screw will help to prevent sudden failure of the bleeder screw, which can result in immediate overheating of the car.
ECS Tuning's Aluminum Coolant Bleeder Screw replaces Genuine BMW Part Number 17111712788
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
09-16-2026
This product was last offered at the strikethrough price on
09-16-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
BMW E39 Coolant Expansion Tank is an essential component designed to maintain the proper coolant level in your vehicle's cooling system. Manufactured with high-quality materials, this expansion tank ensures reliable performance and durability, preventing engine overheating by accommodating the expansion of coolant as it heats up. The kit includes a level sensor and cap, providing everything needed for a seamless installation. This expansion tank is specifically engineered to meet the exact specifications of your BMW E39, offering a perfect fit and optimal functionality.
Complete Kit: Includes level sensor and cap for easy installation. High-Quality Construction: Built with durable materials for long-lasting performance. Prevents Overheating: Helps manage coolant expansion, ensuring engine protection. Exact Fit: Designed to meet the precise specifications of your BMW E39. Enhanced Reliability: Ensures proper coolant level maintenance for optimal cooling system function.
This product was last offered at the strikethrough price on
09-16-2026
This product was last offered at the strikethrough price on
09-16-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
09-17-2026
This product was last offered at the strikethrough price on
09-17-2026
This product was last offered at the strikethrough price on
09-02-2026
This product was last offered at the strikethrough price on
09-02-2026
This product was last offered at the strikethrough price on
07-23-2026
This product was last offered at the strikethrough price on
07-23-2026
Gen 2 MINI R5X models (R55, R56, R57, R58, R59, R60, and R61 chassis) utilize a closed, highly pressurized cooling system to maintain optimal engine operating temperatures. At the center of this system is the factory plastic expansion tank, which is constantly exposed to high heat cycles, vibration, and chemical-laden antifreeze. Over time, heat and pressure leach the plasticizers from the original material. This degradation causes the tank to turn brittle and yellow, eventually leading to micro-fractures, splitting along the factory blow-molded center seam, or catastrophic connection failure. Because coolant loss under pressure can occur rapidly, a failing stock tank frequently leads to severe overheating issues or unexpected roadside breakdowns.
This ECS Heavy Duty Aluminum Coolant Expansion Tank directly addresses the structural vulnerabilities of the factory unit by replacing molded plastic with a fully TIG-welded 5052 and 6061 aluminum construction. Aluminum eliminates the risk of seam separation, cracking, or heat deformation, providing a permanent solution that withstands continuous pressure and heat without expanding or fatiguing. To ensure precise fitment, the tank was engineered using 3D CAD modeling for a direct, plug-and-play installation in the factory location. No cutting, drilling, or custom bracketry is required to secure the unit.
All hose barbs, bleed points, and sensor ports are CNC-machined to precise tolerances, guaranteeing a leak-free seal with factory quick-disconnect hoses. A precision-threaded cap neck ensures smooth engagement with the expansion tank cap while maintaining an airtight seal against the internal cap O-rings. To simplify routine maintenance, an integrated external sight glass and internal level tab eliminate guesswork, allowing you to check your coolant level at a glance. Finally, the heavy-duty wrinkle black powder coat protects the exterior of the tank from oxidation and engine bay heat while providing a clean, OEM+ appearance.
This product was last offered at the strikethrough price on
05-14-2026
This product was last offered at the strikethrough price on
05-14-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
10-08-2026
This product was last offered at the strikethrough price on
10-08-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.
ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.
Each connector includes an additional terminal in case one becomes lost or damaged during installation.
*OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.
Please reference the original part number from the existing connector to confirm fitment, before ordering.
Suggested tools:
Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943
This product was last offered at the strikethrough price on
10-21-2026
This product was last offered at the strikethrough price on
10-21-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
For Mini owners looking to maintain optimal engine performance, the MINI F5X F6X Expansion Tank is an essential component. This expansion tank ensures proper cooling system functionality, preventing overheating and potential engine damage. Crafted with high-quality materials, it guarantees durability and reliability for long-term use, providing peace of mind to Mini enthusiasts.