Heating and Cooling› Thermostats, Housings and Fillers

VEMO Electronic

Electronic Coolant Thermostat Assembly B46/B48

$446.60

SKU: 11538642560

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The VEMO Electronic coolant thermostat assembly is a heat management module designed for B-series engines (B46/B48). This electronically controlled thermostat uses a rotary valve to precisely manage coolant flow based on various engine temperatures. It allows for direct control by the DME/ECU to optimize engine warm-up and maintain consistent temperature regulation across a wide range of operating conditions.
Show original supplier description
The VEMO Electronic coolant thermostat assembly, also known as a Heat Management Module by BMW, offers advanced thermal management for B-series engines (B46/B48). Unlike traditional thermostats, this electronic unit integrates with the vehicle's DME/ECU, enabling it to regulate coolant flow based on a comprehensive range of temperature inputs, including coolant, cylinder head, engine block, and oil temperatures. This module features a rotary valve mechanism, which allows for precise, variable control over coolant flow. Instead of simply opening or closing, the rotary valve can adjust to multiple positions, directing coolant to specific passages as needed. This sophisticated control system facilitates faster engine warm-up and ensures optimal operating temperatures are maintained consistently, even under diverse driving conditions. This part is compatible with various BMW models equipped with B46 and B48 2.0L engines, including specific G01 X3, G02 X4, G20 3-series, G22/G23 4-series, G26 Gran Coupe, G29 Z4, G30 5-series, and G42 2-series variants. Always use the vehicle selector to confirm exact fitment for your specific application.

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

BrandVEMO Electronic
Part Number11538642560
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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