{"product_id":"yeherit-603-973-coolant-expansion-reservoir-tank-with-cap-replaces-oe-22856231-chevy-gmc-cadillac","title":"YEHERIT 603-973 Coolant Expansion Reservoir Tank with Cap — Replaces OE 22856231 (Chevy\/GMC\/Cadillac)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe YEHERIT 603-973 coolant expansion reservoir tank with cap is a purpose-built replacement designed to fit a broad range of GM vehicles. It’s built to endure the demands of daily driving, helping you maintain a consistent cooling loop under various temperatures and road conditions.\u003c\/p\u003e\n\u003cp\u003eConstructed from durable PA plastic, this tank is engineered to withstand heat and engine vibrations. The replacement OE numbers (603-973, 22856231, 671-00359, 603973, 3014134, 67100359) help you confirm compatibility quickly and ensure you’re selecting a trusted cross-reference.\u003c\/p\u003e\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cp\u003eIn a vehicle’s cooling system, the expansion reservoir stores coolant that escapes from the radiator during engine heat. As the engine cools, coolant returns to the radiator to maintain proper pressure and flow. This cycle helps support stable temperature behavior and helps keep the cooling system primed for operation.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable PA plastic construction resists heat and vibration for long-lasting service life\u003c\/li\u003e\n  \u003cli\u003eEffective coolant storage and pressure management within the cooling loop\u003c\/li\u003e\n  \u003cli\u003eDesigned to complement heating system efficiency and overall engine performance\u003c\/li\u003e\n  \u003cli\u003eReplaces multiple OE references for easier cross-compatibility across GM models\u003c\/li\u003e\n  \u003cli\u003eCap included for a secure seal and reliable operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment and use\u003c\/h3\u003e\n\u003cp\u003eThe reservoir is compatible with a wide array of GM vehicles, including Cadillac Escalade and Escalade ESV (2015–2020, 6.2L), Chevrolet Silverado 1500 (2014–2019, 4.3L\/5.3L) and Silverado 1500 LD (2019, 5.3L), Suburban (2015–2020, 5.3L\/6.0L\/6.2L) and Tahoe (2015–2020, 5.3L\/6.2L), 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). Matching OE numbers help confirm the correct cross-reference for your model.\n\u003c\/p\u003e\n\u003ch3\u003eQuality and warranty\u003c\/h3\u003e\n\u003cp\u003eYEHERIT backs this expansion tank with a one-year unlimited-mileage guarantee and responsive after-sales support. If you have questions, the team aims to respond within 48 hours to help with fitment or installation concerns.\u003c\/p\u003e\n\u003ch3\u003eHow to think about installation\u003c\/h3\u003e\n\u003cp\u003eWhile many DIY enthusiasts can replace coolant reservoirs, consider professional service if you’re working around the cooling system’s hoses and pressure. Proper resealing and a clear cooling system inspection are recommended after replacement.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What vehicles are covered by YEHERIT 603-973?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits many GM models listed in the specs, including Silverado, Tahoe, Suburban, Yukon, Sierra, and Escalade variants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is included and what about the warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Includes the reservoir with cap and a one-year unlimited-mileage warranty with responsive customer support.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YEHERIT","offers":[{"title":"Default Title","offer_id":42470703857749,"sku":"B0DSFZPNBB","price":76.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/yeherit-603-973-coolant-reservoir-cap-closeup.jpg?v=1778144905","url":"https:\/\/plentytorque.co.uk\/products\/yeherit-603-973-coolant-expansion-reservoir-tank-with-cap-replaces-oe-22856231-chevy-gmc-cadillac","provider":"PlentyTorque","version":"1.0","type":"link"}