Looking for the Best OE Replacement Number 22856231 603-973? We offer a durable, easy-to-install coolant expansion tank that fits popular models, prevents overheating, and includes a one-year warranty for your peace of mind.
Keeping your vehicle cool is key to its performance and longevity. The Best OE Replacement Number 22856231 603-973 is designed to do just that. It’s a perfect fit for popular models like Chevy Silverado, GMC Sierra, and Cadillac Escalade.
This coolant expansion tank is built to last with premium materials that handle extreme temperatures and vibrations. It’s a direct replacement for OEM parts, saving you time and money. Easy installation means you’ll be back on the road in no time.
Stay cool, drive confident. Prevent overheating and protect your engine with this reliable part. One-year warranty included for peace of mind.
List of Top 3 OE Replacement Number 22856231 603-973
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Coolant Expansion Tank 603-973 with Cap & Sensor Port – Replaces 22856231, 3014134 – Compatible with 2014-2020 Chevy Silverado 1500/2500, Tahoe, Suburban, GMC Sierra 1500/2500, Yukon |
This Coolant Expansion Tank is perfect for owners of 2014-2020 Chevy Silverado, Tahoe, Suburban, GMC Sierra, Yukon, or Cadillac Escalade ESV who want a reliable, easy-to-install replacement for their leaking or cracked OEM tank. |
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Yezoauto Upgraded Pressurized Coolant Reservoir for Cadillac Escalade/Escalade ESV 6.2L 15-20; GMC Sierra 1500 14-19 / Yukon 15-20; Chevy Silverado 1500 / Tahoe 15-17 OE# 603-973 84368362 22856231 |
This coolant reservoir is perfect for drivers who want a reliable upgrade for their Cadillac, GMC, or Chevy. It’s easy to install and built to last, keeping your engine cool and running smoothly. |
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Front Coolant Reservoir Compatible with Select Vehicle Models – Replaces Part Numbers 603-973, 84368362, 22856231 |
This Front Coolant Reservoir is perfect for car owners who need a reliable replacement part. It’s ideal for keeping your engine cool and running smoothly. |
Detailed Reviews
Discover the top 3 OE Replacement Number 22856231 603-973 picks, chosen for quality, performance, and value. Each product is expert-reviewed and backed by customer feedback. Find the perfect fit for your vehicle’s needs, whether it’s durability, ease of installation, or affordability. Read on to make a confident choice and keep your engine running smoothly.
1. Coolant Expansion Tank 603-973 with Cap & Sensor Port – Replaces 22856231, 3014134 – Compatible with 2014-2020 Chevy Silverado 1500/2500, Tahoe, Suburban, GMC Sierra 1500/2500, Yukon

Keep your GM vehicle running cool with the Coolant Expansion Tank 603-973. It’s a perfect fit for 2014-2020 Chevy Silverado, Tahoe, Suburban, GMC Sierra, Yukon, and Cadillac Escalade ESV. This tank is a direct replacement for OEM parts, saving you time and money.
Made from premium PA plastic, this tank is built to last. It can withstand extreme temperatures and vibrations, ensuring a leak-proof seal. The sensor port allows for easy plug-and-play installation.
Protect your engine and improve performance with this coolant tank. It helps prevent overheating, reduce oil dilution, and ensure reliable performance. With a 1-year warranty, you can drive with confidence.
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Perfect For:
This Coolant Expansion Tank is perfect for owners of 2014-2020 Chevy Silverado, Tahoe, Suburban, GMC Sierra, Yukon, or Cadillac Escalade ESV who want a reliable, easy-to-install replacement for their leaking or cracked OEM tank.
Ready to Purchase?
2. Yezoauto Upgraded Pressurized Coolant Reservoir for Cadillac Escalade/Escalade ESV 6.2L 15-20; GMC Sierra 1500 14-19 / Yukon 15-20; Chevy Silverado 1500 / Tahoe 15-17 OE# 603-973 84368362 22856231

Keep your engine cool with the Yezoauto Pressurized Coolant Reservoir. It’s made for specific Cadillac, GMC, and Chevy models. This part fits perfectly and works great.
High-quality plastic ensures long-lasting use and no rust. It’s easy to install and improves engine performance.
Reduces overheating risk and keeps your system pressurized. One-year warranty included for peace of mind.
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Perfect For:
This coolant reservoir is perfect for drivers who want a reliable upgrade for their Cadillac, GMC, or Chevy. It’s easy to install and built to last, keeping your engine cool and running smoothly.
Ready to Purchase?
3. Front Coolant Reservoir Compatible with Select Vehicle Models – Replaces Part Numbers 603-973, 84368362, 22856231

Keep your engine cool and running smoothly with this Front Coolant Reservoir. It’s compatible with select vehicle models, including certain Accord years. Made from heat-resistant polyethylene, it’s built to last in tough under-hood conditions.
This reservoir replaces part numbers 84368362 and 22856231. It’s designed for front-mounted applications in cars and light-duty vehicles.
Stay ahead of overheating issues and maintain proper coolant levels. This part supports engine temperature regulation, keeping your vehicle reliable. Trust it for durable performance on the road.
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Perfect For:
This Front Coolant Reservoir is perfect for car owners who need a reliable replacement part. It’s ideal for keeping your engine cool and running smoothly.
Ready to Purchase?
Buying Guide
Keep your engine cool with the Best OE Replacement Number 22856231 603-973. It’s a perfect fit for popular GM models. Easy installation and durable design make it a top choice.
Buying a coolant expansion tank is simple when you know what to look for. Here’s what to consider:
- Compatibility: Check if it fits your vehicle. This part works with Chevy Silverado, GMC Sierra, and Cadillac Escalade.
- Material: Look for premium materials like PA plastic that handle heat and vibrations.
- Installation: Choose a direct replacement with a sensor port for easy plug-and-play.
- Warranty: A one-year warranty gives you peace of mind.
- Performance: It should prevent overheating and protect your engine.
- Price: Save time and money with a reliable, affordable option.