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TYCPart #: 20-3178-00
TYC 20-3178-00 Headlight Assembly - Left
⚙️ 73 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$49.38Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
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*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦TYC Regular, Left
🚗Fitment: Chevrolet and GMC, Astro and Safari
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Headlight Assembly options
Overview of TYC Regular Headlight Assembly 20-3178-00
The TYC Regular Headlight Assembly 20-3178-00 is designed specifically for Chevrolet Astro and GMC Safari models. This headlight assembly includes both high and low beam halogen bulbs, providing reliable exterior lighting performance for your vehicle.
- Includes halogen bulbs for both high and low beams
- Durable plastic lens and housing materials
- SAE/DOT compliant for road safety standards
- Compatible with Chevrolet Astro and GMC Safari vehicles
- Part number 20-3178-00 corresponds to the driver side; passenger side is 20-3177-00
TYC Regular Product Line Details
The TYC Regular product line offers dependable replacement lighting components that meet OEM specifications. This line focuses on providing quality headlight assemblies with included bulbs, ensuring a straightforward upgrade or replacement for your vehicle’s exterior lighting needs. The 20-3178-00 part is part of this line, emphasizing compatibility and compliance with safety standards.
Product Features and Specifications
This headlight assembly features a plastic lens and housing, which balances durability with weight considerations. The included halogen bulbs cover both high and low beam functions, eliminating the need for separate bulb purchases. The assembly is SAE/DOT compliant, ensuring it meets regulatory requirements for road use. Designed for the Chevrolet Astro and GMC Safari, this part number 20-3178-00 fits the driver side, with the matching passenger side part number 20-3177-00.
Common Applications and Problem Solving
- Replacement for damaged or cracked headlight assemblies on Chevrolet Astro and GMC Safari
- Restores proper high and low beam lighting functionality
- Improves nighttime visibility and safety
- Addresses issues with faded or yellowed plastic lenses
- Ensures compliance with SAE/DOT lighting standards
Installation Notes and Tips
Installation of the TYC Regular Headlight Assembly 20-3178-00 typically requires basic hand tools and moderate mechanical skill. Since the assembly includes both high and low beam halogen bulbs, no additional bulb installation is necessary. It is recommended to verify the correct side before installation, as this part is for the driver side. Always disconnect the vehicle battery before beginning installation to avoid electrical issues.
Quality Assurance and Warranty
TYC products are manufactured to meet or exceed OEM standards, ensuring reliable performance and fitment. The 20-3178-00 headlight assembly is SAE/DOT compliant, confirming adherence to safety regulations. Warranty details vary by distributor, so consult the point of purchase for specific coverage information.
| Brand | TYC |
| Part Number | 20-3178-00 |
| Position | TYC Regular, Left |
| Bulbs Included | Yes |
| Bulb Type | Halogen |
| Lens Material | Plastic |
| Housing Material | Plastic |
| High Beam Bulb Included | Yes |
| Low Beam Bulb Included | Yes |
| Other Side | 20-3177-00 |
| Sae/dot Compliant | Yes |
This part fits 73 vehicles. Search below:
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2005 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | GMC | Safari | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2005 | GMC | Safari | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | GMC | Safari | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2004 | GMC | Safari | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2003 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2003 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2003 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2003 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2003 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2003 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2002 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2002 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2002 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2002 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2002 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2002 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2001 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2001 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2001 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2001 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2001 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2001 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | GMC | Safari | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 2000 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1999 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1999 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1999 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1999 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1999 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1999 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1998 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1998 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1998 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1998 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1998 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1998 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | GMC | Safari | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1997 | GMC | Safari | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1996 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1996 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1996 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1996 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1996 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1996 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1995 | Chevrolet | Astro | Standard Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1995 | Chevrolet | Astro | Standard Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1995 | Chevrolet | Astro | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1995 | Chevrolet | Astro | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1995 | GMC | Safari | Extended Cargo Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; TYC Regular |
| 1995 | GMC | Safari | Extended Passenger Van | Left | Composite Type; Bulb Type: Halogen; Other Side: 20-3177-00; 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:
16524091
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.