<div data-store-description="v1"> <p>Coolant Reservoir Tank Kit for GMC Sierra 2500-3500 HD (2017-2021). Supplied product details follow.</p> <h3>Specifications and fitment</h3> </div> <p>Includes: - Coolant Reservoir Tank Kit</p> <p>Fits Models: - GMC Sierra 2500 HD - GMC Sierra 3500 HD</p> <p>Model Years: - 2017–2021</p> <p>Submodels: - Denali, SLT, SLE, WT - Chassis Codes: GMT900, GMT K2XX - Body Styles: Crew Cab, Double Cab, Regular Cab</p> <p>Engine Options: - 6.0L V8 (L96) - 6.6L Duramax V8 Turbo Diesel (L5P)</p> <p>Description: This coolant reservoir tank kit is designed specifically for the GMC Sierra 2500 and 3500 HD models from 2017 to 2021. It ensures optimal coolant flow and helps maintain engine temperature, preventing overheating. The kit includes all necessary components for a straightforward installation.</p> <p>Features: - Direct fit for GMC Sierra 2500/3500 HD - Durable construction for long-lasting performance - Easy installation with included hardware - Designed to meet or exceed OEM specifications - Helps maintain proper engine cooling</p> <p>Part Number: 603009</p>