PYHAUTO Engine Coolant Reservoir Tank with Cap – Compatible with Silverado 1500, Tahoe, Sierra 1500, Yukon, Escalade (22856231 / 603-973)

Overview

Refresh your cooling system with PYHAUTO's Engine Coolant Reservoir Tank with Cap. This OEM-design replacement mirrors the original part, offering a straightforward swap that can help maintain coolant storage and pressure as your engine runs. The textured surface and durable housing provide a solid, factory-like feel while you focus on day-to-day driving.

Compatibility and Fitment

This reservoir is engineered to align with key GM models, including Silverado 1500, Sierra 1500, Suburban, Tahoe, Yukon, and Escalade. It corresponds to the 22856231 and 603-973 family of part numbers, with additional references such as 84368362, 13502354, 615343803586, and 603973. The goal is a reliable, factory-style replacement that preserves fit and appearance in the engine bay.

Durable Construction

Made from high-quality materials, the tank is designed to endure regular driving conditions and temperature variations. The included cap helps seal the reservoir, contributing to a secure, leak-conscious design that supports consistent coolant containment.

Key Features

• OEM design matches the original reservoir and cap for seamless installation
• Direct replacement fitment for GM trucks and SUVs listed in the description
• Durable construction built for long-lasting reliability
• Cap included to enable immediate sealing and compatibility

What This Means for You

• Time-saving swap with a factory-like appearance
• Maintains proper coolant storage and system pressure during operation
• OEM-aligned look and feel that blends with the engine bay
• 1-year warranty offers confident support after purchase

Installation Tips

Before installing, inspect surrounding hoses and the radiator neck for wear. Ensure the cap seal is intact and that mounting points align with the vehicle’s bracket. Reseal connections as needed and refill coolant following your vehicle’s specifications and service manual guidance.

Quality You Can Rely On

Choose PYHAUTO for a practical replacement option that prioritizes compatibility and durability. This reservoir provides a balanced blend of OEM-style engineering and modern materials, supporting a straightforward maintenance workflow without lengthy downtime.