TRQ Radiator Coolant Reservoir Overflow Bottle with Cap — 2020-2025 Silverado/Sierra 6.6L V8

Overview

Keep your cooling system running smoothly with the TRQ radiator coolant reservoir overflow bottle with cap. This direct-fit replacement is designed for 2020 to 2025 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD models powered by the 6.6L V8 gas engine. It emphasizes dependable containment and straightforward maintenance, helping you manage expansion and return flow without complex fabrication.

During heat cycles and steady operation, the overflow bottle acts as a dedicated space for coolant expansion. The included cap works with a pressurized design to help maintain consistent levels within the reservoir under typical driving conditions. This part is intended to match the original equipment closely, reducing fitment guesswork and saving time on installation.

Key features

• Cap maximum pressure rating: 20 PSI
• Material: durable plastic designed for long service life
• Cap included; mounting hardware not included; level sensor not included
• Pressurized system compatibility supports standard cooling cycles
• Reference numbers: GM3014192; 84630072; 84630072PFM; 671-10174

Why choose TRQ

TRQ has over 25 years of experience delivering direct-fit replacement parts. This reservoir is designed as a practical, no-modification solution with pre-assembled components that align with original equipment, helping you complete a clean, precise replacement. TRQ also curates a broad library of DIY videos to guide you through common maintenance tasks, enabling you to view before you start and make informed decisions.

Fitment at a glance

• Chevrolet Silverado 2500 HD, 2020-25, V8 6.6L Gas Engine
• Chevrolet Silverado 3500 HD, 2020-25, V8 6.6L Gas Engine
• GMC Sierra 2500 HD, 2020-25, V8 6.6L Gas Engine
• GMC Sierra 3500 HD, 2020-25, V8 6.6L Gas Engine

What you get and installation notes

This is a direct-fit replacement that saves time and effort with pre-assembled components designed to match the original equipment. Please note that mounting hardware is not included, and there is no level sensor in this unit. The package is intended to simplify installation and reduce the need for modifications.

Additional support

In addition to the part itself, TRQ provides a rich DIY video catalog to support installation and maintenance tasks. The company also highlights compatibility through reputable checks such as the Amazon Garage confirmed fit feature and a detailed compatibility chart to help you verify the right part for your vehicle.

References to typical usage scenarios are included to help you assess how this reservoir might fit your vehicle's cooling routine. While results can vary by driving conditions, climate, and maintenance history, this reservoir offers a practical option for keeping coolant properly contained during operation.