Door Rubber Weatherstrip Seal for Peterbilt 359 370 377 379 380 86 07 13.5 Ft 2X

This Door Rubber Weatherstrip Seal is a direct-fit cabin sealing component compatible with Peterbilt 359, 370, 377, 379, and 380 models and matches OEM specifications for 1986-2007 year ranges.

Product Overview

This door weatherstrip seal forms a tight barrier against wind, water, and road noise around the cab door frame. Engineered for 86-07 Peterbilt Class 8 trucks, the rubber door seal restores factory-level insulation and prevents costly interior water damage. Fleet operators and owner-operators rely on this weatherstrip to maintain a quiet, dry cabin environment during long-haul operation.

Key Features & Performance

• Sold as a pair for complete driver and passenger side door sealing
• 13.5 ft continuous-length profile eliminates splicing and reduces potential leak points
• Dense EPDM rubber compound resists cracking, UV exposure, and extreme temperature cycles
• Retains original cross-section shape after repeated compression, ensuring consistent door closure
• Direct-fit design mates with factory push-pin or channel retention slots without trimming
• Reduces cab wind whistle and HVAC loss by sealing the full door perimeter

Fitment & Compatibility

• Peterbilt 359 (1986–2007)
• Peterbilt 370 (1986–2007)
• Peterbilt 377 (1986–2007)
• Peterbilt 379 (1986–2007)
• Peterbilt 380 (1986–2007)
• Additional models sharing the same door shell and seal groove dimensions

Common Uses

• Replacing dry-rotted or torn original door seals on aging fleet trucks
• Cab restoration projects requiring OEM-profile weatherstripping
• Correcting water leaks that cause floor pan corrosion or electrical faults
• Reducing cab noise for improved driver comfort during long idling periods
• Preventive maintenance during door hinge or window regulator service

Technical Specifications

• Length per Seal: 13.5 ft
• Quantity: 2 Seals (Driver and Passenger Side)
• Material: EPDM Sponge-Dense Composite Rubber
• Color: Black
• Part Number(s): OEM cross-reference for Peterbilt 359/370/377/379/380 door seal

Frequently Asked Questions

Q: Does this weatherstrip seal require adhesive, or is it a friction-fit installation? A: Most Peterbilt models use a push-on or channel-mount design that secures without adhesive; however, a small amount of weatherstrip adhesive at the mitered corners can improve longevity.

Q: Will the 13.5 ft length cover the entire door frame on a Peterbilt 379? A: The 13.5 ft length is sized specifically for the full perimeter of the standard cab door opening, starting and ending at the sill plate miters without excess slack.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.