Rein Engine Coolant Reservoir - BMW G1X, G3X

Product Details

Protect your BMW investment with the Rein EPT0274 Engine Coolant Reservoir, the professional’s choice for cooling system restoration. As your BMW 750i or M850i reaches higher mileage, the expansion tank becomes a primary failure point; a sudden burst can lead to immediate engine damage. The Rein EPT0274 offers the same reliability and fitment as the original BMW dealer part (OE #17138689765 or #17135A7BC90) but at a more accessible price point. This tank features reinforced hose connection nipples and a pre-installed internal baffle system to manage coolant expansion and prevent air pockets. It is the essential upgrade for any 2020+ V8 BMW owner performing preventative maintenance or a 60,000-mile service.

Key Features

• Leak-Proof Sonic Welding: The top and bottom halves are fused using high-frequency sonic welding to ensure a permanent, high-pressure seal that won't separate at the seams.

• Reinforced Nipples: Strengthened hose ports prevent the snapping or shearing that often occurs during hose removal or installation.

• System Component Protection: By maintaining proper pressure, it prevents stress on more expensive components like the water pump and radiator.

• Quality Certified: Every Rein expansion tank is pressure-tested before leaving the factory to ensure it meets or exceeds BMW’s rigorous standards.

Specifications

• Part Number: EPT0274

• Manufacturer: CRP Automotive

• Primary Fitment: BMW G30, G11, G12, G14, G15, G16 (V8 Models)

• Primary OE Cross-Reference: 17138689765, 17135A7BC90

• Color: Semi-Transparent / Black (Application Dependent)

• Level Sensor: Compatible with OE float/sensor (Check specific kit contents)

• Warranty: Manufacturer-backed quality guarantee

Prop 65 Warning

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Lifetime Replacement

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