{"product_id":"dorman-603-830-engine-coolant-reservoir-front","title":"Dorman 603-830 Engine Coolant Reservoir - Front","description":"\u003ch2\u003eOverview of Dorman Engine Coolant Reservoir 603-830\u003c\/h2\u003e\u003cp\u003eThe Dorman 603-830 engine coolant reservoir is designed for select BMW models, providing reliable coolant storage and pressure management. This reservoir features a durable plastic construction and includes a spring loaded twist cap with a 20 psi pressure rating to maintain optimal engine cooling system performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable black plastic for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.5 inches length, 11.5 inches height with an irregular shape\u003c\/li\u003e\n\u003cli\u003eIncludes a spring loaded twist cap rated for 20 psi maximum pressure\u003c\/li\u003e\n\u003cli\u003eEquipped with a level sensor for accurate coolant monitoring\u003c\/li\u003e\n\u003cli\u003eCap and level sensor included for complete functionality\u003c\/li\u003e\n\u003cli\u003eSix mounting holes for secure installation (mounting hardware not included)\u003c\/li\u003e\n\u003cli\u003eCapacity of 1.5 liters to meet cooling system requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 603-830 engine coolant reservoir is engineered to meet the specifications of various BMW vehicles, including the 530i, 535d, 640i, 740Li, and ActiveHybrid series. Its black plastic construction offers resistance to heat and corrosion, ensuring long-term durability. The irregular shape is designed to fit precisely within the engine bay of compatible BMW models. The included spring loaded twist cap maintains system pressure up to 20 psi, which is critical for preventing coolant loss and overheating. Additionally, the integrated level sensor provides real-time coolant level monitoring, helping to avoid engine damage due to low coolant levels.\u003c\/p\u003e\u003ch2\u003eCompatible BMW Models and Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBMW 530i, 535d, 535d xDrive, 535i, 535i GT, 535i GT xDrive, 535i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe, 640i xDrive Gran Turismo\u003c\/li\u003e\n\u003cli\u003eBMW 740i, 740Ld xDrive, 740Li, 740Li xDrive\u003c\/li\u003e\n\u003cli\u003eBMW ActiveHybrid 5 and ActiveHybrid 7\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by This Coolant Reservoir\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoolant leaks due to cracked or damaged reservoir tanks\u003c\/li\u003e\n\u003cli\u003eInaccurate coolant level readings from faulty or missing sensors\u003c\/li\u003e\n\u003cli\u003eLoss of system pressure causing engine overheating\u003c\/li\u003e\n\u003cli\u003eDegraded or missing reservoir caps leading to coolant evaporation\u003c\/li\u003e\n\u003cli\u003eImproper fitment causing coolant system malfunctions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman 603-830 engine coolant reservoir, ensure the six mounting holes align correctly with the vehicle’s mounting points. Note that mounting hardware is not included and must be sourced separately. Carefully connect the level sensor wiring to the vehicle’s electrical system to maintain accurate coolant level readings. Verify the spring loaded twist cap is securely tightened to maintain the 20 psi pressure rating. Always inspect the cooling system for leaks after installation and refill coolant to the recommended level.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-830 engine coolant reservoir undergoes rigorous quality control to ensure durability and performance in demanding automotive environments. Please refer to Dorman’s warranty policy for specific coverage details.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52124996698293,"sku":"BKKY-603-830","price":108.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_603830_Ang.jpg?v=1775163068","url":"https:\/\/www.partcatalog.com\/products\/dorman-603-830-engine-coolant-reservoir-front","provider":"PartCatalog","version":"1.0","type":"link"}