HomeElectrical, Lighting and Body > Lighting - ExteriorTYC 20-9978-00 Headlight Assembly - Left
Part #: 20-9978-00

TYC 20-9978-00 Headlight Assembly - Left

TYC Regular, Left
⚙️ 10 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦TYC Regular, Left
🚗Fitment: Mazda, CX-5
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Overview of TYC Regular Headlight Assembly for Mazda CX-5

The TYC Regular Headlight Assembly 20-9978-00 is designed specifically for the left side of Mazda CX-5 models. This complete headlight assembly includes LED bulbs for both high and low beams, providing reliable exterior lighting without adaptive headlamp functionality.

  • Complete headlight assembly with bulbs included
  • Clear and amber plastic lens for optimal visibility
  • LED bulbs for high and low beams
  • Halogen bulbs for front side marker and signal lights
  • Plastic housing for durability and lightweight design
  • SAE/DOT compliant for road safety standards
  • Compatible with Mazda CX-5 (left side)

Detailed Features and Specifications

This TYC Regular headlight assembly (part number 20-9978-00) features a clear and amber plastic lens that ensures proper light dispersion and signaling. The housing is also made of durable plastic, designed to withstand typical road conditions. The assembly includes LED bulbs for both the high beam and low beam, enhancing nighttime visibility and energy efficiency. Additionally, the front side marker light and front signal light bulbs are halogen types (W5W and 7444NA respectively), included for complete functionality. This assembly is designed without adaptive front lighting system (AFS) capabilities, making it suitable for Mazda CX-5 vehicles without adaptive headlamps. The product meets SAE and DOT compliance standards, ensuring it adheres to safety regulations.

TYC Regular Product Line Information

The TYC Regular product line offers reliable replacement lighting components that meet OEM specifications. This line focuses on providing complete assemblies with included bulbs, designed for straightforward replacement without adaptive features. The 20-9978-00 headlight assembly fits within this line by delivering a balance of quality materials and functional design tailored for Mazda CX-5 models.

Common Applications and Problem Solving

  • Replacement for damaged or cracked left headlight assembly on Mazda CX-5
  • Upgrade from worn-out halogen bulbs to LED for improved lighting performance
  • Restores proper front side marker and signal light functionality
  • Resolves issues with non-adaptive headlamp lighting systems
  • Ensures compliance with road safety lighting standards

Installation Notes and Tips

Installation of the TYC Regular headlight assembly 20-9978-00 requires no additional bulbs as all necessary LED and halogen bulbs are included. This assembly is designed for the left side of Mazda CX-5 models without adaptive headlamps. Since hardware is not included, retain original mounting components or acquire compatible hardware separately. Careful alignment during installation is recommended to ensure proper beam pattern and signaling function.

Quality Assurance and Warranty

TYC Regular headlight assemblies are manufactured to meet SAE and DOT standards, ensuring compliance with safety and performance requirements. The 20-9978-00 part number undergoes quality control checks to maintain consistent fit and function for Mazda CX-5 vehicles. Warranty details should be confirmed with the product provider or manufacturer.

BrandTYC
Part Number20-9978-00
PositionTYC Regular, Left
Bulbs IncludedYes
Lens ColorClear, amber
ConfigurationW/o adaptive headlamps
Bulb TypeLed
Lens MaterialPlastic
Housing MaterialPlastic
Hardware IncludedNo
Components IncludedComplete assembly
Front Side Marker Light Bulb IncludedYes
Front Side Marker Light Bulb TypeHalogen w5w
Front Signal Light Bulb IncludedYes
Front Signal Light Bulb TypeHalogen 7444na
High Beam Bulb IncludedYes
High Beam Bulb TypeLed
Low Beam Bulb IncludedYes
Low Beam Bulb TypeLed
Other Side20-9977-00
PositionLeft
RemarksW/o afs
Sae/dot CompliantYes

This part fits 10 vehicles. Search below:

YearMakeModelSubmodelBody TypePositionNotes
2021MazdaCX-5SportSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2021MazdaCX-5TouringSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2020MazdaCX-5SportSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2020MazdaCX-5TouringSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2019MazdaCX-5TouringSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2019MazdaCX-5SportSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2018MazdaCX-5SportSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2018MazdaCX-5TouringSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2017MazdaCX-5TouringSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular
2017MazdaCX-5SportSport UtilityLeftw/o Adaptive Headlamps; Bulb Type: LED; Remarks: w/o AFS; Other Side: 20-9977-00; TYC Regular

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

KL2J-51-041CKL2J-51-041D

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.