Dorman 603861 Coolant Reservoir

This item is brand-new, factory sealed.

• Direct replacement - this engine coolant reservoir matches the fit and function of the original part
• Ideal solution - engineered for a seamless installation
• Durable construction - manufactured from quality materials to withstand underhood heat and vibration
• Trustworthy design - backed by 100 years of automotive aftermarket experience
• Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool

• Compatible with Vehicle Type: Truck
• Product Grade: Replacement Part
• Fit Type: Vehicle Specific
• Automotive Fit Type: Vehicle Specific Fit
• Item Dimensions: 10.02 x 7.87 x 6.8 inches
• Item Weight: 1.32 Pounds
• Capacity: 1.5 liters
• Material Type: Metal
• Exterior Finish: Machined
• Brand Name: Dorman
• Manufacturer Part Number: 603-861
• OEM Equivalent Part Number: 23386455
• Global Trade Identification Number: 00889245940193
• UPC: 889245940193
• Manufacturer: Dorman Products
• Model Number: 603-861
• Manufacturer Warranty Description: Limited Lifetime
• Unit Count: 1.0 Count
• Included Components: 1 Reservoir, 1 Cap
• Item Type Name: Engine Coolant Reservoir for Select Models

This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Buick Envision: 2021, 2022, 2023, 2024, 2025] - [Buick LaCrosse: 2017, 2018, 2019] - [Buick Regal Sportback: 2018, 2019, 2020] - [Buick Regal TourX: 2018, 2019, 2020] - [Cadillac XT4: 2019, 2020, 2021, 2022, 2023, 2024, 2025] - [Cadillac XT5: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025] - [Cadillac XT6: 2020, 2021, 2022, 2023, 2024, 2025] - [Chevrolet Blazer: 2019, 2020, 2021, 2022, 2023, 2024, 2025] - [Chevrolet Colorado: 2023, 2024, 2025] - [Chevrolet Equinox: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025] - [Chevrolet Malibu: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025] - [GMC Acadia: 2017, 2018, 2019, 2020, 2021, 2022, 2023] - [GMC Canyon: 2023, 2024, 2025] - [GMC Terrain: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025]