---
product_id: 613388935
title: "Upgrade Aluminium Thermostat Housing Assembly(1PCS).Replaces Part # 12674639 15-11125.Fit for 2014-2020 Chevy Silverado 1500 & Suburban & Tahoe,GMC Sierra 1500 & Yukon & Yukon XL & Cadillac Escalade."
brand: "youyien"
price: "A$4"
currency: AUD
in_stock: true
reviews_count: 8
category: "Youyien"
url: https://www.desertcart.com.au/products/613388935-upgrade-aluminium-thermostat-housing-assembly-1pcs-replaces-part-12674639-15
store_origin: AU
region: Australia
---

# Fits 2014-2020 GM full-size trucks & SUVs 208.4°F thermostat start-to-open temp Precision-machined aluminum housing Upgrade Aluminium Thermostat Housing Assembly(1PCS).Replaces Part # 12674639 15-11125.Fit for 2014-2020 Chevy Silverado 1500 & Suburban & Tahoe,GMC Sierra 1500 & Yukon & Yukon XL & Cadillac Escalade.

**Brand:** youyien
**Price:** A$4
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your engine cool and your ride unstoppable! 🛻

## Quick Answers

- **What is this?** Upgrade Aluminium Thermostat Housing Assembly(1PCS).Replaces Part # 12674639 15-11125.Fit for 2014-2020 Chevy Silverado 1500 & Suburban & Tahoe,GMC Sierra 1500 & Yukon & Yukon XL & Cadillac Escalade. by youyien
- **How much does it cost?** A$4 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/613388935-upgrade-aluminium-thermostat-housing-assembly-1pcs-replaces-part-12674639-15)

## Best For

- youyien enthusiasts

## Why This Product

- Trusted youyien brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **OEM Quality Assurance:** Tested to meet or exceed original equipment standards for reliable, hassle-free installation.
- • **Durable Aluminum Upgrade:** Replaces heat-prone plastic for leak-free, long-lasting engine cooling.
- • **Complete Installation Kit:** Includes premium gasket for a secure, leak-proof seal right out of the box.
- • **Wide Vehicle Compatibility:** Perfect fit for Chevy Silverado, Suburban, Tahoe, GMC Sierra, Yukon, and Cadillac Escalade models (2014-2020).
- • **Precision Temperature Control:** Opens at 208.4°F to maintain optimal engine performance under all driving conditions.

## Overview

This Upgrade Aluminium Thermostat Housing Assembly is a precision-machined replacement part designed for 2014-2020 GM full-size trucks and SUVs. Constructed from durable aluminum, it prevents heat distortion and leaks common with plastic housings. Featuring a thermostat that opens at 208.4°F, it ensures stable engine temperature control for peak performance. The package includes a gasket for easy installation and meets OEM quality standards, making it a reliable upgrade for your vehicle’s cooling system.

## Description

Start to Open Temperature : 208.4°F FITMENT: Fit for Chevy Silverado 1500 2014-2019. Fit for Suburban 2015-2020. Fit for Tahoe 2015-2020. Fit for Corvette 2014. Fit for Cadillac Escalade 2015-2020. Fit for GMC Sierra 1500 2014-2018. Fit for Sierra 1500 Limited 2019. Fit for Yukon 2015-2020. Fit for Yukon XL 2015-2020. Package List: 1XEngine Coolant Thermostat Housing Assembly. 1X Gaskets. Notice: Please verify your part pictures, part numbers before purchasing to prevent wrong purchases.

Review: Works - Doesn’t fit perfectly had to force ever so slightly
Review: Bad fit. - What I ended up doing was taking the old unit apart. Taking the new unit apart. Switching out the guts from the new unit and put them in the old housing. The new unit would not fit into the intake. The machine work on the new housing is incorrect.

## Features

- Replacement:Thermostat controls temperature levels based on vehicle driving conditions and load. Upgraded aluminum replaces plastic materials that leak due to heat distortion. Keeps the engine at a stable operating temperature and prevents overheating.
- Fitment:Fit for Chevy Silverado 1500 2014-2019, Suburban 2015-2020,Tahoe 2015-2020, Corvette 2014, Cadillac Escalade 2015-2020,GMC Sierra 1500 2014-2018 ,Sierra 1500 Limited 2019 ,Yukon 2015-2020 ,Yukon XL 2015-2020. Replaces Part # 12674639 15-11125.
- Package List: 1XAluminium Thermostat Housing Assembly.1X Gaskets.
- Product Quality:Constructed from high quality durable aluminium for increased longevity and high temperature resistance. Tested to meet OEM quality standards for long-lasting performance and easy installation.
- Note:Please verify your part pictures, part numbers before purchasing to prevent wrong purchases and unnecessary charges.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CS6W71BJ |
| Best Sellers Rank | #151,932 in Automotive ( See Top 100 in Automotive ) #218 in Automotive Replacement Engine Thermostat Housings |
| Brand | YOUYIEN |
| Customer Reviews | 3.4 3.4 out of 5 stars (39) |
| Date First Available | January 12, 2024 |
| Exterior | Machined |
| Item Weight | 12 ounces |
| Item model number | ATHAYY06 |
| Manufacturer | YOUYIEN AUTO PARTS |
| Manufacturer Part Number | ATHA1PYYCS1 |
| Model | ATHAYY06 |
| Package Dimensions | 5.83 x 4.37 x 3.66 inches |

## Images

![Upgrade Aluminium Thermostat Housing Assembly(1PCS).Replaces Part # 12674639 15-11125.Fit for 2014-2020 Chevy Silverado 1500 & Suburban & Tahoe,GMC Sierra 1500 & Yukon & Yukon XL & Cadillac Escalade. - Image 1](https://m.media-amazon.com/images/I/71CZDXsx0jL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works
*by C***E on August 5, 2025*

Doesn’t fit perfectly had to force ever so slightly

### ⭐ Bad fit.
*by R***E on March 30, 2025*

What I ended up doing was taking the old unit apart. Taking the new unit apart. Switching out the guts from the new unit and put them in the old housing. The new unit would not fit into the intake. The machine work on the new housing is incorrect.

### ⭐⭐⭐⭐⭐ Review
*by C***R on December 27, 2024*

Le quedó nítido a mi guagua

## Frequently Bought Together

- Upgrade Aluminium Thermostat Housing Assembly(1PCS).Replaces Part # 12674639 15-11125.Fit for 2014-2020 Chevy Silverado 1500 & Suburban & Tahoe,GMC Sierra 1500 & Yukon & Yukon XL & Cadillac Escalade.
- ACDelco Gold 213-4514 (19236568) Engine Coolant Temperature Sensor

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-02*