{"product_id":"dynamic-friction-631-42021l-disc-brake-rotor-front-left","title":"Dynamic Friction 631-42021L Disc Brake Rotor - Front Left","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe Dynamic Friction 631-42021L is a vented disc brake rotor with a slotted and drilled surface, built for direct replacement service on select Jeep applications. Its zinc silver hat finish and rust-resistant coating help protect exposed surfaces, while the directional braking surface is engineered for consistent contact and heat management.\u003c\/p\u003e\u003cp\u003eCompatible with 2011-2012 Jeep Liberty, front left, this rotor is specified for vehicles with Heavy Duty Brakes. The 631-42021L matches the required 5-lug pattern and 332 mm outside diameter for the listed application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSlotted and drilled rotor surface for improved pad bite and surface cleaning.\u003c\/li\u003e\n\u003cli\u003eVented rotor construction for heat dissipation during braking.\u003c\/li\u003e\n\u003cli\u003eZinc silver hat finish with rust-resistant coating for added corrosion protection.\u003c\/li\u003e\n\u003cli\u003eDirectional brake surface for application-specific braking performance.\u003c\/li\u003e\n\u003cli\u003e5-bolt, 5-lug design with 114.4 mm bolt circle diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDynamic Friction 631-42021L is a disc brake rotor designed around the dimensions and mounting pattern required for select Jeep Liberty models. The rotor uses a vented design with a slotted X drilled surface and a directional braking face, giving the friction surface a layout suited to controlled pad contact and heat flow. The plain disc finish, zinc silver hat finish, and rust-resistant coating provide a practical balance of braking function and surface protection.\u003c\/p\u003e\u003cp\u003eFor buyers searching for a Jeep Liberty front left brake rotor for 2011-2012 models with Heavy Duty Brakes, this part number 631-42021L provides the listed fitment and hardware geometry in one replacement rotor. The 332 mm outside diameter, 72.1 mm center hole diameter, and 114.4 mm bolt circle diameter align with the specified application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pulsation caused by worn or uneven rotor surfaces.\u003c\/li\u003e\n\u003cli\u003eReduced braking consistency from heat buildup in the rotor.\u003c\/li\u003e\n\u003cli\u003eSurface corrosion on exposed rotor areas.\u003c\/li\u003e\n\u003cli\u003eFitment issues when replacing a rotor with the wrong bolt pattern or diameter.\u003c\/li\u003e\n\u003cli\u003eNoise or uneven pad contact from a worn braking surface.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstall this rotor only on the listed 2011-2012 Jeep Liberty front left application with Heavy Duty Brakes. Confirm the 5-lug bolt pattern, 114.4 mm bolt circle, and 332 mm outside diameter before installation. The directional surface must be oriented correctly for the intended side and rotation pattern.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamic Friction supplies brake components for replacement use with application-specific dimensions and surface design. Verify all measurements and fitment details against the vehicle before installation.\u003c\/p\u003e","brand":"Dynamic Friction","offers":[{"title":"Default Title","offer_id":53716197834933,"sku":"HBHR-631-42021L","price":133.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63142021L_Fro.jpg?v=1794038762","url":"https:\/\/www.partcatalog.com\/products\/dynamic-friction-631-42021l-disc-brake-rotor-front-left","provider":"PartCatalog","version":"1.0","type":"link"}