Feeds coolant from the water pump to the thermostat module
For models with the B48D, B46D, or B46X engines only - Not for the earlier Gen1 or later Gen3 engines
Brand:
ES#:
4179818
Mfg#:
11538650981
In Stock
8% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$109.99
This product was last offered at the strikethrough price on 11-05-2026
These Turbocharger Coolant Pipes are engineered for a perfect OEM fit, making installation seamless for both professional mechanics and DIY enthusiasts.
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat!
Main pump with metal bracket
10X Entries Into Our F80 M3 Sweepstakes For models with the B48D, B46D, or B46X engines only and without the Energy Recovery System - Not for the earlier Gen1 or later Gen3 engines
Brand:
ES#:
5425181
Mfg#:
11518650988
In Stock
ON SALE!
SAVE 15%
$237.99
This product was last offered at the strikethrough price on 09-16-2026
Connects the expansion tank to the radiator
2X Entries Into Our F80 M3 Sweepstakes For early models with the Gen1 B46/B48 engine - Not for vehicles with the later TU engines
Replacement thermostat With Housing for B46 and B48
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with the earlier Gen1 B48/B46 only - not compatible with the later Gen2 B48 (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
