Xiaoyudou Exhaust Mount Bushing Kit M136109K for Peterbilt 348/379/388/389 — Poly Bushing & Hardware

If your heavy-duty rig needs a reliable replacement to hold the exhaust pipe in place and absorb vibration, the Xiaoyudou M136109K kit provides a ready-to-install set that restores proper exhaust positioning and reduces stress on mounts. Designed for common Peterbilt and Kenworth long‑haul models, this kit bundles an exhaust mount, poly bushings, shaft, washers and E-clips so you can complete the swap without sourcing extra parts.

Which truck models will this kit fit?

This M136109K kit is manufactured to match the mounting geometry used on several popular heavy‑duty cab models. It fits both Peterbilt and Kenworth platforms commonly found in long‑haul and vocational fleets, allowing cross-compatibility for many service garages.

• Peterbilt: 348, 379, 388, 389
• Kenworth: T600, T680, T800, W900
• Hardware included to replace a single exhaust mount assembly

How does the kit improve exhaust support and vibration control?

The kit uses a poly bushing instead of plain rubber, offering improved resistance to heat, oil, and road contaminants. That firmer but flexible material helps absorb movement while keeping the exhaust aligned, which reduces metal fatigue at mounting points and limits rattles.

• Poly bushing handles high temperatures and fluids better than standard rubber
• Includes shaft and washers to restore proper spacing and alignment
• E-clips secure the shaft so the assembly stays locked under load

What exactly comes in the package and how easy is installation?

Each kit is supplied with everything needed to replace one exhaust mount: a mounting bracket with preassembled poly bushing, a machined shaft, two washers and two E-clips. Installation is straightforward for a technician with basic hand tools — remove the old mount, slide in the new shaft and fasteners, then secure the E-clips.

• 1 x exhaust mount with poly bushing included
• 1 x shaft, 2 x washers, 2 x E-clips for full assembly
• Designed for direct replacement on listed Peterbilt and Kenworth models

What durability and support can I expect from Xiaoyudou?

Xiaoyudou builds this kit with materials chosen for heavy‑duty use: the poly bushing and plated hardware resist corrosion, heat and road chemicals better than typical rubber fittings. The parts are intended to extend service life and reduce repeat repairs when properly installed.

• Premium poly bushing for longer wear life under heavy loads
• Corrosion‑resistant hardware for improved longevity
• Two-year warranty covers defects and replacement needs

Who is this for? The Xiaoyudou M136109K exhaust mount bushing kit is aimed at fleet mechanics, owner‑operators and independent shops that service Peterbilt 348/379/388/389 and Kenworth T600/T680/T800/W900 trucks. If you need a cost‑effective direct replacement that restores exhaust alignment and reduces vibration-related wear, this kit offers the necessary parts and a two‑year warranty so you can get back on the road with confidence.