Now you can just replace the o-ring instead of the whole switch
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Also known as the coolant temperature sending unit, comes with related o-ring
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ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4920624
Mfg#:
30102029SD
In Stock
ON SALE!
SAVE 13%
$207.99
This product was last offered at the strikethrough price on 05-02-2026
Upgrade to AutoTecknic’s Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover in Red Carbon and give your BMW the exclusive, high-performance look it deserves.
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Universal cooler used for: engine oil, transmission oil, power-steering, differential oil, and as a water/coolant heat exchanger.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Universal fitment design - modifications may be necessary to run this cooler
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
