Heating and Cooling› Overflow Tanks and Catch Cans

BMW Genuine Parts

Expansion Tank Hose

$64.26

SKU: 11537505950

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Easy — 1–2 hours

Overview

The BMW Genuine Parts expansion tank hose is an OEM-type replacement for BMW part number 11537505950. This hose is crucial for proper cooling system performance. It is manufactured by Rein Automotive, the original supplier to BMW for this part.
Show original supplier description
The BMW Genuine Parts expansion tank hose, with part number 11537505950, serves as a direct OEM-type replacement for your vehicle's coolant reservoir hose. Maintaining the integrity of this hose is critical for the optimal performance of your cooling system, as a damaged or incorrect hose can lead to diminished cooling efficiency or persistent leaks. This expansion tank hose is manufactured by Rein Automotive (CRP), who originally supplied this part to BMW and many other hose types. As an OEM supplier, Rein Automotive ensures that this part meets all of BMW's original design, fitment, and performance requirements. It is also TUV approved. This expansion tank hose is specifically designed for the following BMW fitments: X5 Series E53 X5 (2000-2006) models, including the X5 4.4i M62 (1999-2003) and the X5 4.6is M62.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBMW Genuine Parts
Part Number11537505950
CategoryHeating and Cooling

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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