Heating and Cooling› Thermostats, Housings and Fillers

ACDelco

185°F Standard Flow Engine Coolant Thermostat with Gaskets

$49.10

SKU: 131-163

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Special Order
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Easy — 1–2 hours

Overview

The ACDelco 131-163 is an engine coolant thermostat designed to monitor coolant flow between the engine and radiator. It is built to the exact specifications of original components and is a GM-recommended replacement. This thermostat opens at 185 degrees F and features a standard-flow rate. Gaskets are included with this part.
Show original supplier description
The ACDelco 131-163 is an engine coolant thermostat that serves as a GM Genuine Part, meticulously engineered to monitor and regulate the flow of coolant through your vehicle's engine and radiator system. It is constructed to meet the precise specifications of original equipment, ensuring it is the only GM-recommended replacement for your specific application. This thermostat is designed to open at 185 degrees Fahrenheit, facilitating efficient engine temperature management. The unit features a standard flow rate, and crucially, includes the necessary gaskets for a complete installation. This ACDelco thermostat is a direct-fit replacement specifically for 2001-2016 Chevrolet and GMC trucks equipped with the 6.6L Duramax diesel engine. Its design prioritizes the same performance, durability, and service life expected from the original equipment, making it a reliable choice for maintaining optimal engine operating temperatures. By ensuring proper coolant circulation, this thermostat helps prevent engine overheating and supports efficient performance.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandACDelco
Part Number131-163
CategoryHeating and Cooling
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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