APPERFiT Peterbilt Door Latch Lock Pair LH & RH for 359/370/377/378/379 - OEM Fit, Corrosion-Resistant

APPERFiT replacement door latch locks provide direct-fit left-driver and right-passenger assemblies designed to restore secure, smooth door operation on compatible Peterbilt trucks.

These new door latch locks from APPERFiT are built as replacement assemblies for worn or failed factory latches on Peterbilt cab doors. Each kit includes one left (driver) and one right (passenger) latch manufactured to match the original equipment dimensions and mounting points so installation is straightforward. The pair replaces OEM numbers HLK2221 / 20-08229L / 2008229L / D56002390 and HLK2222 / 20-08229R / 2008229R / D56002391 and fits Peterbilt 359, 370, 377, 378, and 379 models from 2005 and earlier.

How do these latches match OEM fit and function?

APPERFiT designed these latches to conform closely to the original manufacturer specifications so they align with factory holes, linkages, and door geometry. That compatibility minimizes modification and reduces installation time compared with non‑matching aftermarket parts.

• Engineered to OEM dimensions for bolt pattern and striker engagement
• Direct replacements for HLK2221 and HLK2222 part numbers
• Same mounting orientation for driver and passenger sides

What materials and construction ensure durability?

The assemblies are produced from quality metals and corrosion-resistant finishes to withstand daily commercial use and exposure to road conditions. Critical wear points are reinforced so the latch maintains reliable engagement through repeated cycles.

• Robust metal housing and internal components for long service life
• Finishes tuned for rust resistance in exterior door environments
• Precision-machined parts to reduce binding and premature wear

How difficult is installation for a mechanic or DIYer?

Installation is typically straightforward for technicians familiar with heavy-truck door hardware. Because the latches are made to OEM-style specifications, they install using existing door fasteners and linkage, though basic tools and door-panel access are required.

• Installs using factory bolt locations—no drilling expected
• Requires access to door interior and standard hand tools
• Package includes one left and one right latch for full replacement

What warranty and support come with the latches?

Each APPERFiT door latch set includes a one-year warranty covering manufacturing defects. Customer support is available by email to address fitment questions, installation help, or warranty claims.

• 1-year manufacturer warranty for peace of mind
• Responsive email support for technical or fitment inquiries
• New condition parts—sold as left (LH) and right (RH) assemblies

Who is this for: This APPERFiT door latch set is intended for fleet owners, truck mechanics, restoration shops, and owner-operators running Peterbilt 359, 370, 377, 378, or 379 models (2005 and earlier) who need a dependable, OEM-compatible replacement for worn or broken door latches. If you want a direct-fit replacement for HLK2221 / HLK2222 style latches with factory-style mounting and a one-year warranty, this pair provides a practical, installation-friendly option.