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Engine Coolant Thermostat

Name: Engine Coolant Thermostat
Brand: GM Genuine Parts
SKU: 12T5E
Availability: InStock
Rating: 4.9 (12847 reviews)

Authorized Dealer

Engine Coolant Thermostat

BrandGM Genuine PartsLearn More

Qty/Vehicle1

ConditionNew

Includes: (1) Engine Coolant Thermostat, Hardware

$000

•In Stock•Fast Shipping

Estimated Delivery by calculating...

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Ships to

Product Specifications

Features & Benefits

•Direct OE fit - no modifications needed
•Meets or exceeds manufacturer specs
•24-month warranty included
•Fast Shipping — ships same day before 3 PM ET

BrandGM Genuine Parts

Part Number12T5E

Part TypeEngine Coolant Thermostat

ConditionNew

Seal TypeGasket

Sealing Flange Outside Diameter1.811 IN

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Frequently Asked Questions

We're always here to help. If you can't find your answer, ask Rydon - our AI assistant will help you out.

What vehicles does this Engine Coolant Thermostat fit?

This GM Genuine Parts Engine Coolant Thermostat (Part #12T5E) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.

Is this an OEM or aftermarket part?

This is a premium aftermarket Engine Coolant Thermostat by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.

What warranty is included?

This GM Genuine Parts Engine Coolant Thermostat is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.

How long does shipping take?

Fast shipping — orders before 3 PM ET ship the same day. Most arrive within 3-5 business days.

Can I return this if it does not fit?

30-day money-back guarantee. Return unused parts in original packaging for full refund.

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Product Specifications

Brand

GM Genuine Parts

Part Type

Engine Coolant Thermostat

Sealing Flange Outside Diameter

1.811 IN

Features Benefits - Bullet 2

Some GM Genuine Parts may have form...

Part Number

12T5E

Seal Type

Gasket

Features Benefits - Bullet 1

Controls the flow of coolant throug...

Features Benefits - Bullet 3

GM Genuine Parts are designed, engi...

Seal TypeGasket

Sealing Flange Outside Diameter1.811 IN

Features Benefits - Bullet 1Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature

Features Benefits - Bullet 2Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Features Benefits - Bullet 3GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

Features Benefits - Bullet 4GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

Features Benefits - Bullet 5GM regularly updates production and service part designs to integrate new materials and technologies

Jiggle Pin Weep HoleNo

Product DescriptionGM Genuine Parts Engine Coolant Thermostats are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These thermostats control the flow of coolant through your veh

Start To Open Temperature88.8 CE

Check if this fitsShop worry-free by verifying fitment first. If the part doesn't fit, we'll make it right or refund you. Learn more

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Engine Coolant Thermostat

Authorized Dealer

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Part #:12T5E

Call 888-477-2530 for Price

OE REPLACEMENT

Engine Coolant Thermostat

Part #:12T5E

Engine Coolant Thermostat

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Quantity:

In Stock10 or more available

Fast delivery between Mon, Jun 22 to Mon, Jun 22

Ships To:

Call 888-477-2530 for Price

Key Features

OEM-Equivalent QualityMeets/exceeds factory specs

American BusinessMaryland since 1986

24-Month WarrantyLimited coverage on every part

Fast Same Day ShippingWe ship all orders the same business day before cutoff

Product Specs

BrandGM Genuine Parts

Part Number12T5E

Part TypeEngine Coolant Thermostat

ConditionNew

Seal TypeGasket

Sealing Flange Outside Diameter1.811 IN

Features Benefits - Bullet 1Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature

Features Benefits - Bullet 2Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Questions & Answers

Have a Question?

Ask Marvin, our Car Expert

Things to Know

WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which are known to the State of California to cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts

Check if this fits your car first

Engine Coolant Thermostat

Engine Coolant Thermostat

Product Specifications

Compatibility

Vehicle Compatibility

Frequently Asked Questions

Compatibility

Vehicle Compatibility

Product Specifications

Engine Coolant Thermostat

Engine Coolant Thermostat

Key Features

Product Specs

Compatibility

Vehicle Compatibility

Questions & Answers

Things to Know

24 Month Warranty

30 Day Returns

Fast Same Day Shipping

About This Engine Coolant Thermostat

Key Features

Signs This Part Needs Replacement

GM Genuine Parts

Installation Guide

Tools Needed

Frequently Asked Questions