Jerbor Firewall Wiring Harness Cover for Peterbilt 359/379 — Single-Piece ABS Gutter, OEM Fit (Replaces 16-07571)

JERBOR Firewall Wiring Harness Cover is a heavy-duty ABS gutter cover designed to protect and organize the firewall wiring harness on Peterbilt 359 and 379 trucks.

This wiring-harness gutter cover replaces OEM part 16-07571 and shields delicate wiring at the firewall from debris, moisture, and abrasion. Constructed from high-strength ABS, the cover resists cracking and holds its shape under vibration and exposure to road conditions. It arrives as a single-piece replacement that installs in the same mounting area as the original part to restore protection and improve cable routing.

How does this cover protect my Peterbilt's wiring harness?

The gutter cover forms a physical barrier between the harness and harsh elements that can degrade wires over time. By preventing debris intrusion and limiting contact with sharp edges, it helps preserve wiring integrity and maintain reliable electrical connections.

• Durable ABS construction resists impact and cracking.
• Encloses harness to reduce abrasion from vibration and movement.
• Minimizes exposure to dirt, water, and road debris.
• Direct fit replaces OEM 16-07571 for correct positioning.

Will this part fit my Peterbilt 359 or 379 without modification?

This JERBOR cover is made to match the factory fitment for Peterbilt 359 and 379 models, so installation typically requires no cutting or trimming. It is sold as a single piece and aligns with the original mounting points for a straightforward swap.

• Designed specifically for Peterbilt 359 and 379 firewall locations.
• Replaces part number 16-07571 for compatibility.
• Single-piece unit for easier alignment with existing mounts.
• Installation achievable with basic hand tools.

What materials and build quality can I expect?

The cover is molded from high-strength ABS plastic chosen for toughness and dimensional stability. ABS provides a balance of impact resistance and flexibility that helps the cover survive vibration, temperature swings, and ordinary road abuse.

• High-strength ABS resists cracking and warping.
• Smooth molded surfaces for secure seating against the firewall.
• Engineered to withstand typical truck operating conditions.
• Single-piece construction reduces potential leak points.

How do I install and maintain the wiring harness gutter cover?

Installation is straightforward: remove the old cover, position the JERBOR unit against the firewall harness route, and secure it to the factory mounting locations. Maintenance is minimal—periodic inspection and cleaning keep the area free of debris and ensure the cover stays effective.

• Remove existing cover and clean mounting area before install.
• Align with OEM mounting points and fasten using original hardware.
• Inspect seals and attachment periodically for tightness.
• Wipe clean with mild soap and water as needed; avoid harsh solvents.

Who is this for: Owners, fleet managers, and technicians who operate or maintain Peterbilt 359 and 379 trucks and need a reliable, OEM-style replacement for a worn or damaged firewall wiring harness cover. If you want to protect electrical routing, simplify harness management, and restore factory-like protection with an affordable, durable ABS replacement, this JERBOR gutter cover is a practical option.