Peterbilt 389 Glider Elbows, Piping & Comp.

Frequently Asked Questions About Peterbilt 389 Glider Elbows, Piping & Comp.

What are glider elbows and piping components used for?

These parts make up the exhaust stack system on a Peterbilt 389, connecting the turbo or muffler outlet to the vertical exhaust stacks. Elbows direct exhaust flow around chassis components, while straight piping sections extend the run up to the stack. Components in this category include mounting clamps, brackets, and connectors needed to complete the assembly.

Will these elbows and pipes fit my specific 389 exhaust setup?

Diameter and angle matter most here. Most listings specify the pipe diameter (commonly 5 inch) and elbow angle (such as 45 or 90 degree) so you can match them to your existing stack configuration. Always compare the diameter, length, and angle of the part you need against your current setup or your truck's OEM specs before ordering, since glider kit trucks can vary in configuration from factory-spec 389s.

What material and finish options are available?

Exhaust elbows and piping are typically offered in stainless steel or chrome-plated steel. Stainless resists corrosion and heat discoloration over time, while chrome offers a bright, polished look that many owner-operators prefer for show trucks. Since this is exterior, visible piping, the finish choice comes down to both durability preference and appearance.

Do I need any special tools or expertise to install these parts?

Installation generally involves basic hand tools, exhaust clamps, and sometimes welding or fabrication if you're altering an existing stack run rather than doing a direct swap. Bolt-together clamp connections don't require welding, but if you're changing pipe diameter or elbow angle from your original setup, some cutting or clamp adjustment may be needed. If you're unsure, a diesel shop familiar with exhaust work can confirm fitment before you cut anything.

How do I keep chrome or stainless piping looking good over time?

Regular washing removes road grime and diesel soot before it bakes onto the surface from heat. Chrome pieces benefit from a dedicated chrome polish applied periodically, especially on sections nearest the exhaust outlet where heat discoloration is most common. Stainless holds up a bit better against heat staining but still benefits from routine cleaning to maintain its finish.