{"product_id":"dynamic-friction-631-37003l-disc-brake-rotor-rear-left","title":"Dynamic Friction 631-37003L Disc Brake Rotor - Rear Left","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe Dynamic Friction 631-37003L is a disc brake rotor built for rear left applications with a slotted and drilled surface. It features a zinc silver hat finish and rust-resistant coating for added corrosion protection. This rotor is a fitment-specific replacement for select Asuna and Isuzu models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSlotted and drilled rotor surface for consistent brake contact and heat management.\u003c\/li\u003e\n\u003cli\u003eRust-resistant coating helps protect exposed surfaces from corrosion.\u003c\/li\u003e\n\u003cli\u003eZinc silver hat finish adds a clean, durable appearance.\u003c\/li\u003e\n\u003cli\u003eSolid rotor construction with a 256 mm outside diameter and 100 mm bolt circle.\u003c\/li\u003e\n\u003cli\u003eDirectional braking surface for application-specific performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe Dynamic Friction 631-37003L disc brake rotor is engineered for rear left fitments that require a 4-lug, 100 mm bolt pattern and a 57 mm center hole. Its slotted X drilled surface and solid rotor design support stable braking characteristics, while the plain disc finish and rust-resistant coating help maintain the rotor over time. This part number, 631-37003L, is listed for 1990-1993 Isuzu Impulse, 1991-1993 Isuzu Stylus, and 1993 Asuna Sunfire rear left applications. For buyers searching for a rear left brake rotor for Isuzu Impulse or Isuzu Stylus, 631-37003L provides a direct fitment reference tied to the listed vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Rotor May 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-affected rotor faces.\u003c\/li\u003e\n\u003cli\u003eSurface corrosion on exposed brake components.\u003c\/li\u003e\n\u003cli\u003eNoise or vibration associated with rotor wear.\u003c\/li\u003e\n\u003cli\u003eFitment replacement needs for listed rear left applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the rear left position, bolt circle diameter, center hole diameter, and overall dimensions before installation. Confirm rotor thickness against service limits and inspect pads, caliper condition, and hub surfaces during replacement. This part number, 631-37003L, should be matched to the exact vehicle listing before installation on Isuzu Impulse, Isuzu Stylus, or Asuna Sunfire applications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamic Friction supplies brake components with application-specific engineering and corrosion-resistant finishes. The DFC Brake Rotor - Drilled and Slotted - Silver line focuses on rotor design details that support consistent braking performance and long-term surface protection.\u003c\/p\u003e","brand":"Dynamic Friction","offers":[{"title":"Default Title","offer_id":53546736222389,"sku":"HBHR-631-37003L","price":78.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63137003L_Fro.jpg?v=1792306075","url":"https:\/\/www.partcatalog.com\/products\/dynamic-friction-631-37003l-disc-brake-rotor-rear-left","provider":"PartCatalog","version":"1.0","type":"link"}