Frequently Asked Questions About Peterbilt 567/579 Elbows, Piping & Comp.

Will these exhaust elbows and pipes fit my specific Peterbilt 567 or 579 model year?

Most exhaust elbows and piping components for Peterbilt 567/579 models are compatible across years 2013-present, but there are important variations. The 567 typically uses 5-inch diameter systems, while the 579 may have either 5-inch or 6-inch depending on engine configuration. Always verify your truck's existing pipe diameter and check whether you have a day cab, sleeper, or extended hood model, as these affect pipe lengths and elbow angles. When in doubt, measure your current system or provide your VIN for exact fitment confirmation.

What's the difference between aluminized steel and chrome exhaust components, and which should I choose?

Aluminized steel pipes and elbows offer excellent corrosion resistance at an economical price point, typically lasting 5-7 years under normal conditions. Chrome-plated components provide superior aesthetics and durability, often lasting 10+ years, but cost significantly more. If your truck operates in harsh winter conditions with road salt exposure, chrome is worth the investment. For mild climates or budget-conscious operators, aluminized steel provides reliable performance. Consider chrome for visible sections and aluminized for hidden components to balance cost and appearance.

Can I install these exhaust components myself, or do I need professional installation?

Most exhaust elbows and straight pipes can be installed with basic tools including band clamps, a socket set, and penetrating oil for stubborn connections. However, complete system overhauls or modifications requiring cutting and welding should be done professionally. Common DIY challenges include dealing with seized clamps on older systems and ensuring proper alignment to prevent exhaust leaks. Budget 2-4 hours for elbow replacements and have extra clamps on hand. Professional installation typically runs $200-400 depending on complexity.

How do I know if I need standard or expanded end pipes and elbows?

Expanded end (also called flared) components have one end sized larger to slip over standard diameter pipes, eliminating the need for connectors in some applications. Standard ends require band clamps or couplers to join sections. Check your current setup - if pipes slip inside each other, you have expanded ends. Most OEM Peterbilt systems use a combination of both. When replacing sections, match what you have or plan to use appropriate adapters. Expanded ends typically create cleaner installations with fewer potential leak points.

Why are there different degree options for elbows, and which angles do I need?

Elbow angles (45?, 60?, 90?) accommodate different exhaust routing requirements based on your truck's configuration. Standard Peterbilt 567/579 vertical stack setups typically use 90? elbows at the top, while under-chassis routing may require combinations of 45? and 60? bends. Measure the angle of your current elbows or trace your exhaust path to determine needs. Using the wrong angle can cause clearance issues with the cab, sleeper, or frame components. Many operators keep spare 45? and 90? elbows for field repairs as these are the most commonly needed.