Jerbor Firewall Wiring Harness Cover for Peterbilt 359/379 — ABS direct-fit, impact resistant

JERBOR Firewall Wiring Harness Cover is a durable ABS gutter cover designed to protect and route the wire harness on Peterbilt 359 and 379 trucks.

This replacement wiring harness gutter cover is made to match the factory fit and layout for Peterbilt 359 and 379 models, offering a rugged shield against road debris, moisture, and UV exposure. It replaces part number 16-07571 and is constructed from impact-resistant ABS to withstand heavy-duty truck conditions. The cover helps preserve wiring integrity and maintain reliable signal and power routing along the firewall and chassis junction.

How does this cover improve wiring longevity?

The JERBOR cover creates a physical barrier that reduces abrasion, prevents direct exposure to the elements, and keeps harnesses secured in place. By shielding wires from stones, salt, and grime, it reduces the chance of insulation wear and intermittent electrical issues.

• Durable ABS resists cracking and warping under temperature changes.
• Contours to Peterbilt 359/379 firewall for a snug fit.
• Protects connectors and splice points from road spray and debris.

Will it fit my truck and replace the original part?

This gutter cover is manufactured to match the OEM shape and mounting points of Peterbilt 359 and 379 models, serving as a direct replacement for part number 16-07571. Installation aligns with the original fastener locations so it integrates with existing hardware.

• Designed for Peterbilt 359 and 379 model firewalls.
• Compatible with original mounting points and clips.
• Sold as a single-piece replacement for straightforward swap-out.

What are the material and durability benefits?

Made from high-strength ABS plastic, the cover resists impacts, UV degradation, and common garage chemicals. Its rigid construction minimizes vibration-related fatigue and helps maintain wiring routing under heavy-duty use.

• High-strength ABS withstands daily truck operation stresses.
• UV-stable surface reduces sun-related brittleness over time.
• Rigid form keeps harnesses from rubbing against metal surfaces.

How easy is installation and what’s included?

Installation is straightforward for technicians familiar with Peterbilt firewall layouts: remove the old cover and secure the JERBOR replacement using the vehicle's existing fasteners. The product ships as one complete wiring harness gutter cover ready to mount.

• Includes: 1 Pcs JERBOR Wiring Harness Gutter Cover.
• Uses existing fasteners—no special tools required beyond standard automotive hand tools.
• Customer support available from JERBOR for fitment or installation questions.

Who this is for: Fleet managers, owner-operators, mechanics, and restoration specialists working on Peterbilt 359 or 379 trucks who need a reliable, OEM-style wiring harness gutter replacement. It’s suited for anyone replacing a cracked or missing firewall harness cover or upgrading to a more weather-resistant component to protect electrical routing and reduce maintenance headaches.