YINAVAGAD Coolant Overflow Reservoir for BMW E46/X3/X5 with Sensor & Cap — Direct-Fit Replacement

YINAVAGAD’s complete engine coolant overflow recovery reservoir replaces worn tanks and sensors to restore proper coolant overflow management for compatible BMW models.

This replacement coolant expansion tank assembly is designed as a direct-fit option for many BMW 3 Series (E46), X3 (E83) and X5 (E53) vehicles produced around the early 2000s. The kit includes the plastic reservoir, a pressure cap and the integrated level sensor, allowing a straightforward swap for original parts that show cracks, leaks or faulty sensors. Built and tested to consistent manufacturing specifications, it matches common OEM reference numbers so you can verify fitment before purchase.

Will this reservoir fit my BMW model?

Check the part numbers and your vehicle’s model year to confirm compatibility. This tank is commonly used across E46 3 Series variants, select X3 E83 models and X5 E53 3.0i vehicles; cross-reference with your current reservoir number to be sure.

• Replaces OEM references: 17137787039, 17117573781, 17111436413, 17132247553 and listed equivalents.
• Fits many E46 sedan, coupe, convertible and touring variants (316i–330i and related Ci/xi models).
• Compatible with X3 E83 (2.5i, 3.0i, xDrive28i, xDrive30i) and X5 E53 3.0i ranges listed by year.

How simple is installation, and what comes in the box?

Installation is typically straightforward for someone familiar with basic engine-bay work; it swaps in place of the original tank using existing hoses and mounting points. The package contains the reservoir with the pre-installed level sensor and a matching pressure cap, so you won’t need to hunt for additional parts to complete the replacement.

• One coolant overflow recovery reservoir with sensor included.
• One replacement pressure cap matched to the tank.
• Direct-replacement design to use original mounting locations and hose connections.

What quality and warranty protections are provided?

The reservoir is manufactured and inspected to meet consistent quality standards aimed at reliable performance under normal driving conditions. YINAVAGAD supports the product with a 12-month unlimited-mileage warranty to cover craftsmanship and manufacturing defects; follow the seller’s return process if issues arise.

• Constructed from durable thermoplastic suitable for coolant systems.
• Pre-fitted sensor designed to match factory signals for dashboard level monitoring.
• 12-month unlimited-mileage warranty against manufacturing defects.

Who is this for: This replacement coolant overflow reservoir is intended for BMW owners, DIY mechanics and independent repair shops working on E46 3 Series, E83 X3, and E53 X5 vehicles that require a direct-fit tank with sensor and cap. It’s a practical choice if your vehicle shows coolant level warnings, overflows, visible tank cracks, or a failing sensor; if you’re unsure, verify your existing part number against the listed OEM references to confirm compatibility before ordering.