--- product_id: 806598827 title: "Coolant Expansion Reservoir Tank With Cap Compatible With 2016-2021 Cadillac XT4 XT5 XT6 Chevrolet Blazer Equinox GMC Acadia Terrain Buick LaCrosse Regal Sportback Replaces 23386455 603-861" brand: "yzusgomumu" price: "1452.29 DT" currency: TND in_stock: true reviews_count: 5 category: "Yzus Gomumu" url: https://www.desertcart.tn/products/806598827-coolant-expansion-reservoir-tank-with-cap-compatible-with-2016-2021 store_origin: TN region: Tunisia --- # Easy install under 10 minutes Maintains optimal engine temperature Durable high-quality construction Coolant Expansion Reservoir Tank With Cap Compatible With 2016-2021 Cadillac XT4 XT5 XT6 Chevrolet Blazer Equinox GMC Acadia Terrain Buick LaCrosse Regal Sportback Replaces 23386455 603-861 **Brand:** yzusgomumu **Price:** 1452.29 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Upgrade your ride’s heartbeat—cool smarter, drive stronger! ## Quick Answers - **What is this?** Coolant Expansion Reservoir Tank With Cap Compatible With 2016-2021 Cadillac XT4 XT5 XT6 Chevrolet Blazer Equinox GMC Acadia Terrain Buick LaCrosse Regal Sportback Replaces 23386455 603-861 by yzusgomumu - **How much does it cost?** 1452.29 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/806598827-coolant-expansion-reservoir-tank-with-cap-compatible-with-2016-2021) ## Best For - yzusgomumu enthusiasts ## Why This Product - Trusted yzusgomumu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **OE Quality Assurance:** Replaces OEM part 23386455 with exact specifications for reliable, worry-free performance. - • **Built to Last Through Extremes:** Crafted from robust materials designed to withstand temperature swings and pressure fluctuations. - • **Precision Fit for Premium SUVs:** Compatible with 2016-2021 Cadillac, Chevrolet, GMC & Buick models—guaranteed seamless integration. - • **Engineered for Thermal Stability:** Keeps your engine cool under pressure, preventing overheating and stalling in all driving conditions. - • **Quick & Hassle-Free Installation:** Swap out your old reservoir in under 10 minutes with just basic tools—no mechanic needed. ## Overview This coolant expansion reservoir tank with cap is a direct OEM replacement (part 23386455) compatible with a wide range of 2016-2021 Cadillac, Chevrolet, GMC, and Buick models. Engineered for durability and thermal stability, it ensures optimal engine temperature management to prevent overheating and stalling. Designed for quick installation, it fits perfectly and withstands extreme conditions, making it an essential upgrade for maintaining your vehicle’s performance and longevity. ## Description YzusGomumu Coolant Expansion Reservoir Tank With Cap Compatible With 2016-2021 Cadillac XT4 XT5 XT6 Chevrolet Blazer Equinox GMC Acadia Terrain Buick LaCrosse Regal Sportback Replaces 23386455 603-861 Review: I highly recommend this. I got this for my 2016 Chevrolet Malibu LT 1.5 L turbo engine. The install took less than 10 minutes. All you need is a 10 mm socket and channel locks or pliers to compress the hose rings. Review: Love just what I needed no more leaks fits perfect eary to install no more than 10 mins ## Features - [Product Feature] The coolant radiator reservoir tank maintain optimal engine temperature in various conditions and resolve issues related to engine stalling caused by overheating - [Compatible With] 2019-2021 Cadillac XT4 L4 2.0L;2020-2021 Cadillac XT5 L4 2.0L;2017-2021 Cadillac XT5 V6 3.6L;2021 Cadillac XT6 L4 2.0L;2020-2021 Cadillac XT6 V6 3.6L;2020-2021 Chevrolet Blazer L4 2.0L/L4 2.5L/V6 3.6L;2018-2019 Chevrolet Equinox L4 1.6L;2018-2020 Chevrolet Equinox L4 2.0L;2018-2021 Chevrolet Equinox L4 1.5L;2016-2021 Chevrolet Malibu L4 1.5L/L4 2.0L - [Compatible With] 2020-2021 GMC Acadia L4 2.0L;2017-2021 GMC Acadia L4 2.5L/V6 3.6L;2018-2019 GMC Terrain L4 1.6L;2018-2021 GMC Terrain L4 1.5L;2021 GMC Terrain L4 2.0L;2017-2019 Buick LaCrosse V6 3.6L;2018-2020 Buick Regal Sportback L4 2.0L/V6 3.6L;2018-2020 Buick Regal TourX L4 2.0L;2021 Buick Envision L4 2.0L - [OE Number] 23386455 603-861.Please check the part numbers whether it suits your vehicle before purchasing - [Durability] The coolant overflow tank is built for durability, made from high-quality materials.Its robust construction ensures it can withstand extreme temperature fluctuations and pressure changes within the cooling system ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DPBXJ9RR | | Customer Reviews | 4.6 4.6 out of 5 stars (22) | | Date First Available | 19 December 2024 | | Fit Type | Vehicle Specific | | Item model number | 23386455 | | Manufacturer | YzusGomumu | | Manufacturer Part Number | 23386455 | | Model | Coolant Expansion Reservoir Tank | | OEM Part Number | 23386455 | | Package Dimensions | 19.41 x 19.2 x 16.79 cm; 453.59 g | | Position | Inner | ## Product Details - **Brand:** YzusGomumu - **Item Weight:** 454 g - **Material:** Plastic - **Product Grade:** Replacement Parts - **Vehicle Service Type:** Car ## Images ![Coolant Expansion Reservoir Tank With Cap Compatible With 2016-2021 Cadillac XT4 XT5 XT6 Chevrolet Blazer Equinox GMC Acadia Terrain Buick LaCrosse Regal Sportback Replaces 23386455 603-861 - Image 1](https://m.media-amazon.com/images/I/61285gM8l3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***S on 30 January 2026* I highly recommend this. I got this for my 2016 Chevrolet Malibu LT 1.5 L turbo engine. The install took less than 10 minutes. All you need is a 10 mm socket and channel locks or pliers to compress the hose rings. ### ⭐⭐⭐⭐⭐ Review *by T***A on 12 February 2026* Love just what I needed no more leaks fits perfect eary to install no more than 10 mins ### ⭐⭐⭐⭐⭐ Review *by Y***R on 8 February 2026* Mi prima lo compro y le gusto mucho porq lo nesecitava para su carro se los recomiendo en comprarlo porq le resultó mucho --- ## 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.tn/products/806598827-coolant-expansion-reservoir-tank-with-cap-compatible-with-2016-2021](https://www.desertcart.tn/products/806598827-coolant-expansion-reservoir-tank-with-cap-compatible-with-2016-2021) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-15*