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Heating and Cooling› Thermostats, Housings and Fillers

Rein /

Rein 1.4 Bar Expansion Tank Cap

$35.99 $25.75 Save $10.24

SKU: CPE0035

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Special Order
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$100 Minimum Order
30 Days Return
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Overview

The Rein Automotive CPE0035 is an expansion tank cap designed for various BMW models. This cap maintains the necessary pressure within the coolant system to prevent boiling.

It is constructed from metal and features a twist-on closure. The cap is specifically designed for large expansion tanks and is rated at 1.4 bar.
Show original supplier description
The Rein Automotive CPE0035 is a direct-fit expansion tank cap, engineered to meet OEM pressure specifications for reliable performance. Designed as a twist-on cap, it is constructed from durable metal and features a 1.4 bar pressure rating. This cap is specifically intended for use with large expansion tanks. The brand is known for providing genuine replacement parts for European and Asian vehicles. This expansion tank cap is compatible with a broad range of BMW models, including various iterations of the 1-Series, 2-Series, 3-Series, 4-Series, 5-Series, 6-Series, 7-Series, X1, X3, X4, X5, X6, X7, and Z4, spanning many model years from 2006 to 2025. Specific fitment details are extensive and should be verified against the vehicle's existing system, particularly noting applications designated for large expansion tanks.

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

BrandRein /
Part NumberCPE0035
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.

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