Heating and Cooling› Thermostats, Housings and Fillers

Wahler

Engine Coolant Thermostat

$93.95

SKU: 410389.103D

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In Stock
Ships by Aug 4
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INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Wahler 410389.103D Engine Coolant Thermostat is crucial for maintaining optimal engine temperature, ensuring peak performance and efficiency. This thermostat opens at 103°C and includes a temperature sensor and necessary gaskets and seals for a complete installation. It is engineered specifically for Mercedes-Benz C250 (1.8L) and SLK250 (1.8L) models from the 2012 to 2015 model years. Cross-reference numbers for this part include 271 200 03 15 and 2712000315. Installation typically involves draining the coolant, removing the old thermostat, and fitting the new Wahler 410389.103D thermostat. Always refer to your vehicle’s service manual for specific instructions. Symptoms of a failing thermostat can include engine overheating, fluctuating temperature gauge readings, or coolant leaks, which may also trigger diagnostic trouble codes like P0128 and P0131.

MIA's Description

The Wahler 410389.103D Engine Coolant Thermostat is designed to regulate your vehicle's engine temperature. It is engineered for vehicles like the C250 and SLK250 from 2012 to 2015, guaranteeing a precise fit and dependable operation.

Fitment

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Specifications

BrandWahler
Part Number410389.103D
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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