TYC 20-9978-00-9 Headlight Assembly - Left

Left Headlight Assembly for Mazda CX-5

This TYC CAPA Certified headlight assembly is built for the left side of the 2017-2021 Mazda CX-5 with LED lighting and no adaptive headlamps. Part number 20-9978-00-9 is a complete exterior lighting replacement for drivers restoring front-end visibility and factory-style appearance.

Compatible with 2017-2021 Mazda CX-5, left, this assembly includes the bulbs and lens configuration needed for a direct replacement on vehicles without AFS. The clear and amber lens design matches the original lighting layout for the Mazda CX-5.

Key Features

• TYC CAPA Certified headlight assembly
• Part number 20-9978-00-9
• Fits the left side of 2017-2021 Mazda CX-5
• Complete assembly with bulbs included
• LED low beam and high beam bulbs included
• Front side marker light bulb included with Halogen W5W type
• Front signal light bulb included with Halogen 7444NA type
• Clear and amber lens color
• Plastic lens and plastic housing
• SAE/DOT compliant
• Configuration: without adaptive headlamps, without AFS

Detailed Description

TYC 20-9978-00-9 is a left headlight assembly for the Mazda CX-5, engineered for 2017-2021 models without adaptive headlamps. It comes as a complete assembly with LED low beam and high beam bulbs already included, along with the front side marker and front signal bulbs. The clear and amber lens layout, plastic housing, and SAE/DOT compliance support a factory-style exterior lighting repair. This CAPA Certified replacement is also cross-referenced to Mazda OE part numbers KL2J-51-041C and KL2J-51-041D, and Partslink MA2502151 for the same application.

Common Problems This Part Addresses

• Cracked or clouded left headlight lens
• Failed LED low beam or high beam lighting
• Broken front signal or side marker lighting
• Water intrusion or housing damage
• Restoring front-end lighting after collision repair

Installation Notes and Tips

Verify that your vehicle is a 2017-2021 Mazda CX-5 with no adaptive headlamps and no AFS before ordering. This assembly is for the left side only, and the opposite side is 20-9977-00-9. Confirm connector condition, aim the headlamp after installation, and check all lighting functions before returning the vehicle to service.

Quality Assurance

TYC CAPA Certified lighting components are built to meet application-specific fit and compliance requirements. This headlight assembly is SAE/DOT compliant for road use when installed on the correct vehicle application.