Revised green 4 pin sensor, located in the cooling flange located on the side of the cylinder head
For vehicles with VIN from 3B-X-491,581, split is in the 1999 model year.
Ensure a proper seal when installing a new water pump
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with AEB or ATW engine codes only.
Brand:
ES#:
518028
Mfg#:
026121041P
Ships in 3 Business Days
$11.99
This product was last offered at the strikethrough price on 08-26-2026
Located on the back of the cylinder head
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with AEB or ATW engine codes only
Brand:
ES#:
2535197
Mfg#:
058121133B
Ships in 2 Business Days
$7.99
This product was last offered at the strikethrough price on 08-13-2026
<font color='blue'>Blue</font> sensor with square connector. Please check existing sensor color
We Price Match - Give Us A Call or Chat! For vehicles with VIN up to 3B-X-491,580, split is in the 1999 model year.
Ensure a proper seal when installing a new water pump. 53x4mm
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with AUG or AWM engine codes only.
Connects the lower radiator port to the water pump and expansion tank
For vehicles with AEB or ATW engine codes only, with VIN from 8D-Y-120001, split is in the 2000 model year.
Brand:
ES#:
3463131
Mfg#:
4B0121055F
In Stock
ON SALE!
SAVE 36%
$41.99
This product was last offered at the strikethrough price on 05-02-2026
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
