PYHAUTO Coolant Reservoir Tank with Sensor & Cap — OEM Replacement 15203949 / 603102 for Yukon, Tahoe, Escalade, Silverado

Overview

Upgrade your cooling system with the PYHAUTO Coolant Reservoir Tank, a thoughtfully engineered OEM-style replacement that combines a built-in sensor and cap for a clean, ready-to-install solution. This reservoir is designed to fit a range of full-size GM SUVs and trucks, offering a reliable upgrade path that mirrors the original design so you can service your vehicle with confidence.

Beyond a basic tank, this assembly brings together precise fitment, durable construction, and practical sensor integration. It’s crafted to withstand engine heat and daily driving conditions, helping you maintain proper coolant levels with less guesswork. While it doesn’t promise guarantees, it presents meaningful possibilities for smoother maintenance and a tidier engine bay.

Why PYHAUTO?

Choosing PYHAUTO means opting for a product that emphasizes compatibility, quality, and support. The reservoir is designed to work as a direct replacement for the parts listed, with attention to the fit, thread design, and overall form that align with the OEM footprint.

• OEM Design & Fitment: Engineered to match the original style and mounting geometry, saving time during installation.
• Sensor & Cap Integration: Built-in sensor and cap simplify monitoring and sealing right out of the box.
• Compatibility: Tested for models including Yukon, Tahoe, Escalade, Silverado, Sierra, Suburban, Avalanche, and H2.
• Quality Materials: Durable construction designed for long-lasting performance in demanding environments.
• Warranty Support: 1-year warranty adds peace of mind to your purchase.

What’s Included & Key Benefits

• Reliable coolant monitoring with an integrated sensor helps you keep an eye on levels between maintenance checks.
• Secure sealing cap minimizes the risk of leaks and spills in the engine bay.
• Effortless replacement with commonly matched part numbers 15203949 and 603102, reducing downtime.
• Versatile compatibility supports a wide range of GM trucks and SUVs for a versatile replacement option.

Compatibility & Real-World Use

Designed to work with a variety of GM vehicles, this reservoir helps you align with an OEM-style setup, making it a practical choice for routine maintenance, preventive care, or a full drivetrain refresh. Imagine a cleaner engine bay, easier top-offs during heat cycles, and the satisfaction of confident service decisions when you inspect the cooling system during a routine check.

Durability, Warranty & Support

Constructed from materials chosen for resilience, the reservoir aims to resist cracking and wear over time. The included 1-year warranty provides assurance if you encounter any issues, with a simple path to reach out for guidance or replacements.