Precision Replacement Parts GRK-9110-86 Glass Run Channel Kit – OEM #20-08108/75000525 Front Door Window Guide Seal for 1986–2000 Peterbilt 377 & 1987–2007 Peterbilt 379 (2-Piece Ozone-Resistant Rubber)

Restore smooth window operation and proper sealing with the Precision Replacement Parts GRK-9110-86 Glass Run Channel Kit. Designed as a direct-fit replacement, this kit guides the door glass securely within the window frame while helping reduce rattling, binding, and wind noise.

Manufactured from high-quality, ozone-resistant rubber, the glass run channel is built to withstand harsh weather, UV exposure, and daily wear common in heavy-duty truck applications. It provides long-lasting durability while maintaining consistent window alignment and smooth up-and-down movement.

This two-piece front door glass run channel kit is engineered for 1986–2000 Peterbilt 377 and 1987–2007 Peterbilt 379 trucks and meets OEM specifications (OEM #20-08108 / 75000525) for reliable fit and performance. Ideal for replacement during restoration, repair, or routine maintenance, it helps restore a factory-correct fit and finish.

Professional installation is recommended to ensure proper seating and optimal window operation.