{"product_id":"dorman-911-975-secondary-air-injection-check-valve","title":"Dorman 911-975 Secondary Air Injection Check Valve - Front","description":"\u003ch2\u003eOverview of the Dorman Secondary Air Injection Check Valve\u003c\/h2\u003e\u003cp\u003eThe Dorman 911-975 Secondary Air Injection Check Valve is designed to maintain proper air flow in the emission control system of select BMW models. Engineered with durable cast aluminum, this check valve supports efficient operation of the secondary air injection system in vehicles like the BMW 525i, 530i, X5, and Z4.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from cast aluminum for strength and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eGray finish complements OEM components\u003c\/li\u003e\n\u003cli\u003eInlet and outlet size of 0.83 inches for precise fitment\u003c\/li\u003e\n\u003cli\u003eMaximum pressure rating of 50 psi to handle system demands\u003c\/li\u003e\n\u003cli\u003eReed valve type ensures reliable one-way air flow\u003c\/li\u003e\n\u003cli\u003eOperates effectively within a temperature range of -40°C to 125°C\u003c\/li\u003e\n\u003cli\u003eIncludes one secondary air injection check valve and one gasket for installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 911-975 secondary air injection check valve plays a critical role in the emission control system by preventing exhaust gases from flowing back into the air injection system. Made from cast aluminum, this valve offers durability and resistance to heat and corrosion, which is essential for maintaining performance in the demanding environment of the engine bay. The gray finish provides a clean, OEM-style appearance. Both the inlet and outlet ports measure 0.83 inches, ensuring compatibility with the air injection hoses on compatible BMW models. The reed valve design allows air to flow in one direction only, supporting the reduction of harmful emissions during cold engine starts. This valve is rated for a maximum pressure of 50 psi and can operate reliably in temperatures ranging from -40°C to 125°C, making it suitable for various driving conditions.\u003c\/p\u003e\u003ch2\u003eCompatible BMW Models and Applications\u003c\/h2\u003e\u003cp\u003eThis secondary air injection check valve is compatible with several BMW vehicles, including the 525i, 530i, X5, and Z4. It is specifically designed to meet the emission control requirements of these models, ensuring proper function of the secondary air injection system and compliance with environmental standards.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Check Valve\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents backflow of exhaust gases into the air injection system\u003c\/li\u003e\n\u003cli\u003eHelps reduce emissions during cold starts\u003c\/li\u003e\n\u003cli\u003eMaintains proper air flow to the catalytic converter\u003c\/li\u003e\n\u003cli\u003ePrevents damage to the secondary air injection pump\u003c\/li\u003e\n\u003cli\u003eSupports overall engine emission control system efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman 911-975 check valve should be performed with care to ensure proper sealing and fitment. The package includes one gasket to help achieve an airtight connection. It is recommended to inspect the surrounding hoses and components for wear or damage during installation. Proper torque specifications should be followed to avoid leaks or damage to the valve. This part is designed for direct replacement on compatible BMW models, making installation straightforward for professional technicians or experienced DIYers.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures this secondary air injection check valve to meet or exceed OEM standards for fit, form, and function. The use of cast aluminum and a reed valve design ensures durability and reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship, providing confidence in the product's quality and longevity.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44329679585461,"sku":"BKKY-911-975","price":125.1,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_911975_Ang.jpg?v=1775012158","url":"https:\/\/www.partcatalog.com\/products\/dorman-911-975-secondary-air-injection-check-valve","provider":"PartCatalog","version":"1.0","type":"link"}