Your engine relies on a steady temperature to stay healthy and efficient. With the Rein CTA0079, you’re getting OE-level quality and a frustration-free install that gets your car back to peak performance.
2X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
5470515
Mfg#:
11537644811
Ships in 4 Business Days
$322.99
This product was last offered at the strikethrough price on 06-11-2026
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 10-16-2026
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
The Radiator Hose - Coolant Return Line is an ideal replacement for those seeking to maintain their vehicle’s cooling system and ensure long-term engine health.
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat!
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
