{"product_id":"dynamic-friction-631-31097l-disc-brake-rotor-front-left","title":"Dynamic Friction 631-31097L Disc Brake Rotor - Front Left","description":"\u003ch2\u003eDrilled and Slotted Front Left Rotor\u003c\/h2\u003e\u003cp\u003eThe Dynamic Friction DFC Brake Rotor - Drilled and Slotted - Silver, part number 631-31097L, is a vented front left disc brake rotor built for BMW applications that call for a 348 mm rotor with a 5-lug, 120 mm bolt circle. Its slotted X drilled surface and zinc silver hat finish are paired with a rust-resistant coating for a clean, service-ready appearance.\u003c\/p\u003e\u003cp\u003eDesigned for 2011-2019 BMW 535i, 535i xDrive, 535d, 535d xDrive, ActiveHybrid 5, 640i, 640i xDrive, 640i Gran Coupe, and 640i xDrive Gran Coupe front left positions, this rotor supports OE-style fitment details including applications with aluminum hat rotors and disc brake pad wear sensor notes where listed. Part number 631-31097L is a direct match for the specified front left brake position in the listed BMW models.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSlotted X drilled braking surface for consistent rotor cleaning\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor design for front axle heat management\u003c\/li\u003e\n\u003cli\u003e348 mm outside diameter with 30 mm nominal thickness\u003c\/li\u003e\n\u003cli\u003e28.4 mm discard thickness specification\u003c\/li\u003e\n\u003cli\u003e5-bolt pattern with 120 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eZinc silver hat finish with rust-resistant coating\u003c\/li\u003e\n\u003cli\u003eDirectional brake surface design\u003c\/li\u003e\n\u003cli\u003ePlain disc finish with 75 mm center hole diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDFC Brake Rotor Line Details\u003c\/h2\u003e\u003cp\u003eThe DFC Brake Rotor - Drilled and Slotted - Silver line focuses on OE-style rotor dimensions with a performance-oriented surface pattern. For BMW 535i, 640i, and ActiveHybrid 5 front brake service, the line combines a vented rotor structure with drilled and slotted machining to maintain a stable braking surface while matching the listed fitment requirements.\u003c\/p\u003e\u003ch2\u003eWhat This Rotor Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pulsation caused by worn or uneven front rotors\u003c\/li\u003e\n\u003cli\u003eReduced braking consistency from heat buildup in daily driving\u003c\/li\u003e\n\u003cli\u003eSurface glazing and pad transfer on the rotor face\u003c\/li\u003e\n\u003cli\u003eCorrosion on exposed rotor hat areas\u003c\/li\u003e\n\u003cli\u003eFront left rotor replacement needs on BMW 535i, 535d, 640i, and ActiveHybrid 5 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify rotor diameter, bolt circle, center hole diameter, and thickness before installation. This rotor is listed for the front left position only, so confirm side and axle placement against the vehicle service information. Fitment notes reference both aluminum hat and full cast rotor configurations on select BMW applications, including models such as the BMW 640i Gran Coupe and BMW 535i xDrive. Part number 631-31097L should be matched to the exact brake package and sensor-related notes shown for the vehicle.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamic Friction supplies this rotor with a rust-resistant coating and zinc silver hat finish to support long-term appearance and serviceability. The listed dimensions and directional slotted\/drilled surface are provided to align with the specified BMW front brake applications.\u003c\/p\u003e","brand":"Dynamic Friction","offers":[{"title":"Default Title","offer_id":51715966861493,"sku":"HBHR-631-31097L","price":125.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63131097L_Fro.jpg?v=1774634396","url":"https:\/\/www.partcatalog.com\/products\/dynamic-friction-631-31097l-disc-brake-rotor-front-left","provider":"PartCatalog","version":"1.0","type":"link"}