Also called a Heat Management Module, this electronic thermostat controls coolant flow based on engine temperatures
10X Entries Into Our F80 M3 Sweepstakes For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later models that feature the B48N/B48P engine
Brand:
ES#:
5433734
Mfg#:
11538642560
In Stock
ON SALE!
SAVE 50%
$356.99
This product was last offered at the strikethrough price on 05-02-2026
Connects to the thermostat module and supports the electrical wiring harness
For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later models that feature the B48N/B48P engine
Brand:
ES#:
4179822
Mfg#:
11538651265
Ships in 1-2 days
4% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$78.99
This product was last offered at the strikethrough price on 07-06-2026
With the A9X Supra & BMW G-Series High-Performance Radiator by CSF, drivers can expect reliable performance and longevity, even under the most demanding conditions.
2X Entries Into Our F80 M3 Sweepstakes
Replacement plastic coolant reservoir for the high temp circuit that cools your engine block and cylinder head - includes an integrated coolant level sensor
Brand:
ES#:
4181509
Mfg#:
17138610652
Ships in 1-2 days
6% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$198.99
This product was last offered at the strikethrough price on 09-05-2026
Feeds coolant from the water pump to the thermostat module
For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later models that feature the B48N/B48P engine
Brand:
ES#:
4179818
Mfg#:
11538650981
In Stock
ON SALE!
$100.99
This product was last offered at the strikethrough price on 08-26-2026
Prevent coolant leaks with a brand new hose
For models with a production date up to 07/2021 or a production date from 07/2021+ without Crontrol DSC (S8WEA)
Brand:
ES#:
4181366
Mfg#:
17128654834
Ships in 1-2 days
6% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$141.99
This product was last offered at the strikethrough price on 09-05-2026
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
