Partsam Headlight Housing Base with H4 Plugs for Kenworth/Peterbilt/Freightliner — Stainless Steel Bezel, 2-Pack Prewired

Replace worn or damaged headlight bases on heavy-duty trucks with this purpose-built assembly from PARTSam. Engineered for compatibility with a broad range of North American long-haul models — including Kenworth T600/T800/W900, Peterbilt 379, Western Star 4900, and Freightliner FLD — this kit supplies two housing bases, matching wire harnesses, and H4 plugs so you can restore fit, function, and road-ready durability without modifying the vehicle.

Will this headlight housing base fit my truck model?

PARTSam designed this housing to match factory mounting dimensions for several common heavy-duty models. It fits many Peterbilt, Kenworth, Western Star, and Freightliner round-headlight applications where H4-type connections are used.

• Compatible models include Peterbilt 378/379, Kenworth T400/T600/T800/W900/K100/C500, Western Star 4900/4964, Freightliner FLD Classic XL.
• Includes two driver and passenger-side bases for full axle replacement.
• Verify your vehicle uses an H4 bulb connector and round headlight bezel before ordering.

How simple is the installation process?

Installation is straightforward for technicians or knowledgeable DIYers familiar with commercial truck lighting. The housings arrive with pre-attached wire harnesses and standard H4 plugs to speed swap-in and minimize wiring work.

• Prewired H4 plugs reduce splicing and electrical adaptation.
• Direct-mount bezels match original screw points for quick bolting into place.
• Standard tools (screwdriver, socket set) typically required; bulbs are not included.

What materials and protections does the assembly offer?

This replacement pairs a tough polypropylene (PP) housing with a corrosion-resistant stainless steel bezel to handle vibration, road debris, and weather exposure. The combination protects the lamp and maintains a clean, professional appearance on the truck’s front end.

• PP housing resists impact and cracking from road hazards.
• Stainless steel bezel prevents rust and keeps the mounting secure.
• Sealed design helps reduce moisture intrusion and extends lighting component life.

What exactly is included in the package?

The kit supplies the main parts needed to replace the housing bases for both sides of the vehicle, but bulbs are intentionally omitted so you can choose the lamp type that suits your system.

• 2x headlight housing bases (driver and passenger side) with wire harnesses.
• 2x H4 plugs pre-attached for compatibility with standard halogen H4 connections.
• Headlights and bulbs are NOT included; mounting hardware may vary by vehicle.

Who is this for?

This PARTSam replacement is built for fleet mechanics, owner-operators, and restoration specialists who need a durable, OEM-style headlight base for heavy-duty trucks. If your rig uses round headlights with H4 connectors and you want a corrosion-resistant bezel plus a secure polypropylene housing to restore function and appearance, this kit offers a practical, ready-to-install option.