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603-973 Coolant Reservoir Tank with Cap Compatible with Chevy Silverado 1500 2500 Tahoe, GMC Sierra 1500 Yukon, Cadillac Escalade Replace 22856231

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$42.95

$ 19 .99 $19.99

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About this item

  • Vehicle Compatibility: This expansion tank is designed to fit a wide range of GM vehicles, including Cadillac Escalade/Escalade ESV (2015-2020, 6.2L), Chevrolet Silverado 1500 (2014-2019, 4.3L, 5.3L), Silverado 1500 LD (2019, 5.3L), Suburban (2015-2020, 5.3L, 6.0L, 6.2L), Suburban 3500 HD (2016-2019, 6.0L), and Tahoe (2015-2020, 5.3L, 6.2L). Also compatible with GMC Sierra 1500 (2015-2019, 4.3L, 5.3L, 6.2L), Sierra 1500 Limited (2019, 5.3L), Yukon (2015-2020, 5.3L, 6.2L), and Yukon XL (2015-2019, 5.3L, 6.2L).
  • Replacement OE Numbers: This expansion tank replaces OE part numbers 603-973, 22856231, 671-00359, 603973, 3014134, and 67100359, ensuring a perfect fit and reliable performance for your vehicle.
  • Durable Construction: Made from high-quality plastic materials, this expansion tank is built to withstand extreme heat and vibrations, ensuring long-lasting durability and performance in demanding conditions.
  • Optimized Cooling Performance: A vital part of your vehicle’s cooling system, it effectively manages coolant flow, regulates pressure, and maintains ideal engine temperature, protecting your engine and extending its lifespan.
  • Customer Satisfaction Guarantee: Each product undergoes stringent testing to ensure reliability. If you have any concerns, our dedicated support team is here to assist you promptly.


Upgrade your vehicle’s cooling system with our high-quality coolant overflow tank, expertly designed for a perfect fit in various Chevy models. Compatible with 2014-2019 Chevy Silverado/Sierra 1500 (4.3L/5.3L/6.2L V6), 2015-2020 Chevy Suburban/Tahoe (5.3L V8), 2016-2019 Chevy Suburban 3500 HD (6.0L V8), and more, this reservoir ensures reliable performance under extreme conditions.

Constructed from durable PP plastic, this tank is built to withstand high temperatures and tough environments, providing long-lasting durability and improved engine cooling efficiency. It effectively manages coolant flow and pressure, maintaining optimal engine temperature to protect your engine and enhance its lifespan.

With easy installation and a perfect fit, you can confidently tackle any driving challenge. For added peace of mind, each purchase comes with a 12-month warranty and responsive customer support ready to assist you within 48 hours. Ensure your vehicle runs smoothly with our top-notch coolant overflow tank today!


Joel reyes
Reviewed in the United States on April 7, 2025
Lego quebradoy no es igual
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