Includes heat exchanger and gaskets. Manufactured from cast aluminum instead of plastic for improved durability.
10X Entries Into Our F80 M3 Sweepstakes For vehicles with the earlier B46A/B48A (Gen1) Engine Only - Not compatible with the B46D/B48D Engine
Brand:
ES#:
4766201
Mfg#:
11428596283-M
In Stock
ON SALE!
SAVE 10%
$249.99
This product was last offered at the strikethrough price on 09-08-2026
Includes heat exchanger and gaskets. Manufactured from cast aluminum instead of plastic for improved durability - Rein Part Number HEU0115
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with the earlier B46A/B48A (Gen1) Engine Only - Not compatible with the B46D/B48D Engine
Replacement thermostat With Housing for B46 and B48
10X Entries Into Our F80 M3 Sweepstakes For vehicles with the earlier Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Brand:
ES#:
4686052
Mfg#:
11537644811
In Stock
ON SALE!
SAVE 15%
$223.99
This product was last offered at the strikethrough price on 05-02-2026
Includes an OEM water pump, heat management module, and 1 gallon of coolant concentrate
10X Entries Into Our F80 M3 Sweepstakes For model years 2017-2019
Brand:
ES#:
4869783
Mfg#:
11518638026EKT
In Stock
ON SALE!
$395.99
This product was last offered at the strikethrough price on 05-02-2026
Also called a Heat Management Module by BMW, this electronic thermostat controls coolant flow based on engine temperatures
For models with the B48D, B46D, or B46X engines only - Not for the earlier Gen1 or later Gen3 engines
Brand:
ES#:
4179815
Mfg#:
11538642560
In Stock
9% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$446.99
This product was last offered at the strikethrough price on 07-06-2026
Located on the side of the engine block, includes gasket
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with the earlier Gen1 B46/B48 engine - Not compatible with the later TU engines
Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.
Lifetime Replacement
