Heating and Cooling Thermostats, Housings and Fillers

MOTORAD

THERMOSTAT

$31.18

SKU: M05C 381-170

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Motorad 381-170 is a standard engine coolant thermostat designed to maintain optimal engine temperature. It is engineered to open at 170 degrees Fahrenheit, ensuring efficient coolant flow and engine performance.

This thermostat features a jiggle pin weep hole to help prevent air lock and promote smooth circulation. Its dimensions include a sealing flange outside diameter of 2.13 inches, a height between flanges of 1.46 inches, and an overall height of 2.09 inches. The bypass diameter is 1.09 inches with a bypass length of 1.31 inches.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMOTORAD
Part NumberM05C 381-170

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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