Keystone TO2502164 Driver Side Headlight Assembly for Toyota 4Runner

The Keystone TO2502164 is a direct replacement driver side headlight assembly engineered for Toyota 4Runner SR5 and Limited models. This aftermarket headlight lens and housing unit delivers OE-quality illumination and precise fitment at a competitive price point.

Key Features:

• Chrome housing with clear lens and amber corner markers for factory-style appearance
• DOT/SAE compliant construction meets or exceeds FMVSS 108 standards for photometry and safety
• Projector low beam design with reflector high beam for optimized light output
• OE-comparable mounting tabs and fasteners ensure hassle-free installation
• Specialized lens coating resists hazing, yellowing, and UV degradation
• Sealed ABS plastic and polycarbonate construction provides impact and weather resistance

Installation Notes:

• Bulbs are NOT included - requires 9005 high beam and H11 low beam halogen bulbs (reuse from original)
• Also requires 1156NA turn signal bulb and 168 side marker bulb (not included)
• Direct bolt-on replacement with plug-and-play wiring harness connection
• Professional installation recommended

This replacement headlight assembly cross-references to OEM part number 81170-35421 and Partslink number TO2502164. The unit comes ready to install with all necessary mounting hardware for a secure, factory-quality fit.