YINAVAGAD Coolant Overflow Recovery Reservoir Tank for BMW E46/E83/E53 with Sensor & Cap – Direct Fit, OEM Cross-Reference

YINAVAGAD’s engine coolant overflow recovery reservoir tank is a direct-fit replacement tank with sensor and cap engineered to restore proper coolant level monitoring and overflow containment on many BMW E46, E83 and E53 models.

This replacement coolant expansion bottle is designed to match the original equipment fit and function for a broad range of BMW 3 Series (E46), X3 (E83) and X5 (E53) vehicles. Molded from durable engineering-grade materials and supplied complete with the cap and level sensor, the unit lets you replace a cracked, leaking, or non‑functional reservoir quickly—without modifying hoses or brackets. The tank cross-references common OEM numbers so you can verify compatibility before ordering.

Will this tank fit my BMW and how do I check compatibility?

Confirm fit by matching the OEM reference numbers or comparing the tank shape and sensor plug with your original. This YINAVAGAD unit replaces several known part numbers used across E46, E83 and E53 platforms, covering many model variants and model years.

• Replaces OEMs: 17137787039, 17111436413, 17117573781, 17132247553, EPK0018, EPT0018, 603-535, and others.
• Fits BMW E46 (3 Series) sedans, coupes, convertibles and touring variants including 316i–330i and 316Ci–330Ci variants.
• Compatible with X3 (E83) 2.5i, 3.0i, xDrive28i, xDrive30i and X5 (E53) 3.0i where this reservoir style is used.
• Always cross-check part numbers and sensor plug orientation before installation.

What comes in the box and what should I expect during installation?

The package ships with one complete coolant overflow recovery tank including the integrated level sensor and a pressure cap. Installation is typically straightforward, using existing mounting points and hoses; basic hand tools and coolant handling precautions are required.

• Included: one reservoir tank, pre‑installed sensor, and cap—ready to swap in place of the old unit.
• No extra hoses or adapters usually needed; fits the OEM mounting locations.
• Expect a 30–60 minute replacement time for the typical DIY mechanic, depending on access and vehicle layout.
• Drain or catch coolant before removal to avoid spills; refill and bleed the cooling system after installation.

How durable is this replacement tank and what warranty is provided?

YINAVAGAD manufactures this reservoir to meet strict quality standards and tests units for leak resistance and sensor reliability. The tank is built from impact- and heat-resistant plastic to withstand under‑hood conditions and everyday road stresses.

• Constructed from durable, automotive‑grade materials for longevity.
• Tested for fit and function to ensure proper sensor signaling and sealing.
• Backed by a 12‑month unlimited‑mileage warranty for peace of mind.
• Customer support available if you encounter fitment or performance issues within the warranty period.

Who is this for? If your BMW shows coolant level warnings, has a cracked or discolored expansion tank, or leaks from the reservoir area, this YINAVAGAD replacement is aimed at DIY mechanics, independent shops, and owners seeking a cost‑effective OEM‑style repair. It suits drivers of compatible E46 3 Series, E83 X3, and E53 X5 models who want a direct, sensor‑equipped swap that restores cooling system monitoring without extensive modification.