Peterbilt 389 Glider Sleeper Repair Parts: Upgrade your sleeper with premium replacement and aftermarket parts. This line includes sleeper boots, seals, rings, and shock absorbers to keep your cab in top condition. Designed to integrate seamlessly with the Peterbilt 389's style and construction, these parts help maintain comfort and performance. Whether for repairs or upgrades, this product line ensures your truck stays reliable and powerful.