--- product_id: 698851826 title: "Aluminum Engine Coolant Thermostat Housing Assembly Compatible with 2017-2023 Buick Cadillac Chevy GMC Vehicles - LaCrosse Regal XT5 XT6 Blazer Acadia 3.6L, Replaces 12678780" brand: "llannder" price: "€ 45.39" currency: EUR in_stock: true reviews_count: 5 category: "Llannder" url: https://www.desertcart.hr/products/698851826-aluminum-engine-coolant-thermostat-housing-assembly-compatible-with-2017-2023 store_origin: HR region: Croatia --- # Easy installation, no hassle Precision-engineered for OEM fit Durable aluminum resists cracks & leaks Aluminum Engine Coolant Thermostat Housing Assembly Compatible with 2017-2023 Buick Cadillac Chevy GMC Vehicles - LaCrosse Regal XT5 XT6 Blazer Acadia 3.6L, Replaces 12678780 **Brand:** llannder **Price:** € 45.39 **Availability:** ✅ In Stock ## Summary > 🔥 Keep your engine cool and your ride hotter! ## Quick Answers - **What is this?** Aluminum Engine Coolant Thermostat Housing Assembly Compatible with 2017-2023 Buick Cadillac Chevy GMC Vehicles - LaCrosse Regal XT5 XT6 Blazer Acadia 3.6L, Replaces 12678780 by llannder - **How much does it cost?** € 45.39 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/698851826-aluminum-engine-coolant-thermostat-housing-assembly-compatible-with-2017-2023) ## Best For - llannder enthusiasts ## Why This Product - Trusted llannder brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from premium aluminum to withstand heat and prevent leaks—engineered for longevity - • **OEM-Exact Fit:** Seamlessly replaces part #12678780 for 2017-2023 Buick, Cadillac, Chevy & GMC 3.6L engines - • **Tested & Trusted:** 100% quality tested before shipping to ensure flawless performance and peace of mind - • **Plug & Play Installation:** Designed for quick, tool-friendly setup—get back on the road faster with zero guesswork - • **Wide Vehicle Compatibility:** Perfect match for LaCrosse, Regal, XT5, XT6, Blazer, and Acadia models spanning 2017-2023 ## Overview The LLANNDER Aluminum Engine Coolant Thermostat Housing Assembly is a precision-engineered replacement part compatible with 2017-2023 Buick, Cadillac, Chevy, and GMC 3.6L engines. Made from durable aluminum, it resists cracking and leakage, ensuring reliable engine temperature regulation. Designed for easy installation and tested for quality, it fits multiple popular models including LaCrosse, Regal, XT5, XT6, Blazer, and Acadia, making it a trusted upgrade for maintaining optimal engine performance. ## Description LLANNDER Aluminum Engine Coolant Thermostat Housing Assembly Compatible with 2017-2023 Buick Cadillac Chevy GMC Vehicles - LaCrosse Regal XT5 XT6 Blazer Acadia 3.6L, Replaces 12678780 Review: Works - Works. No more low coolant temp Review: not worth the money - installed 4 months ago and is already starting to stick open. would definitely not buy again. ## Features - Replace Part Numbers: 12678780 - Premium Quality: LLANNDER Thermostat Housing Is Made of High Quality & Durable Materials for Resistance to Crack and Leakage. 100% Tested Before Shipping - Easy Installation: The Thermostat Housing Is Precisely Engineered for Easy Installation. It Is Exactly Match OEM Product - Application: Fit for 2017-2019 LaCrosse, 2018-2020 Regal Sportback, 2017-2023 XT5, 2020-2023 XT6, 2019-2023 Blazer, and 2017-2023 Acadia Models. Specially Designed for 3.6L Engines - Package Includes: 1x Engine Coolant Thermostat Housing Assembly ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DPFVD8GN | | Best Sellers Rank | #120,404 in Automotive ( See Top 100 in Automotive ) #141 in Automotive Replacement Engine Thermostat Housings | | Brand | LLANNDER | | Customer Reviews | 3.7 3.7 out of 5 stars (14) | | Date First Available | December 2, 2024 | | Exterior | Machined | | Item Weight | 11.7 ounces | | Item model number | 12678780 | | Manufacturer | LLANNDER | | Manufacturer Part Number | 12678780 | | Model | Thermostat Housing | | Position | Front | | Product Dimensions | 4.25 x 4.25 x 3.35 inches | ## Images ![Aluminum Engine Coolant Thermostat Housing Assembly Compatible with 2017-2023 Buick Cadillac Chevy GMC Vehicles - LaCrosse Regal XT5 XT6 Blazer Acadia 3.6L, Replaces 12678780 - Image 1](https://m.media-amazon.com/images/I/61GoNXiZVNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works *by C***S on December 16, 2025* Works. No more low coolant temp ### ⭐ not worth the money *by G***H on February 12, 2026* installed 4 months ago and is already starting to stick open. would definitely not buy again. ### ⭐⭐⭐⭐ o ring *by J***T on October 12, 2025* should come with O-ring for feeder pipe ## Frequently Bought Together - LLANNDER Aluminum Engine Coolant Thermostat Housing Assembly Compatible with 2017-2023 Buick Cadillac Chevy GMC Vehicles - LaCrosse Regal XT5 XT6 Blazer Acadia 3.6L, Replaces 12678780 - Walker Products 211-2025 Engine Coolant Temperature Sensor - ACDelco GM Original Equipment 12650595 Engine Coolant Temperature Sensor, Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/698851826-aluminum-engine-coolant-thermostat-housing-assembly-compatible-with-2017-2023](https://www.desertcart.hr/products/698851826-aluminum-engine-coolant-thermostat-housing-assembly-compatible-with-2017-2023) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-21*