Peterbilt 359 Exhaust Parts

Frequently Asked Questions About Peterbilt 359 Exhaust Parts

What years and models are these exhaust parts compatible with?

Our Peterbilt 359 exhaust parts are designed to fit all 359 models manufactured from 1967 to 1987. Most components are also compatible with the extended hood 359 models. However, specific parts like stack brackets and Y-pipes may vary between short hood and long hood configurations. Always check the product description for your specific year and hood length, or contact our support team with your OEM for exact fitment verification.

What's the difference between chrome and stainless steel exhaust stacks?

Chrome stacks offer a mirror-like finish at a lower initial cost but require regular polishing and may show pitting or rust over time, especially in harsh weather conditions. Stainless steel stacks cost more upfront but maintain their appearance longer with minimal maintenance and resist corrosion better. For trucks exposed to road salt or coastal environments, stainless steel typically provides better long-term value despite the higher price.

Do I need special tools or professional installation for exhaust components?

Most exhaust parts like stacks, elbows, and clamps can be installed with basic hand tools including wrenches, sockets, and a torque wrench. However, manifold replacements and complete system overhauls often require air tools, cutting equipment, and welding for proper fitment. Stack installation typically takes 1-2 hours per side for experienced mechanics. We recommend professional installation for manifolds and custom exhaust routing to ensure proper clearances and prevent exhaust leaks.

What diameter exhaust pipes work best for my 359?

The optimal diameter depends on your engine configuration. Most stock applications use 5-inch diameter pipes, which work well for engines up to 425 HP. For modified engines producing over 425 HP or those with performance upgrades, 6-inch or 7-inch systems provide better exhaust flow and reduced back pressure. Dual 5-inch stacks remain the most popular choice for both performance and authentic appearance on restored 359s.

How can I prevent my new chrome stacks from discoloring?

Chrome discoloration typically occurs from excessive heat and exhaust residue buildup. Install heat shields between the stacks and cab to reduce radiant heat exposure. After installation, idle the engine for 20-30 minutes to properly cure any protective coatings. Regular cleaning with chrome polish every 2-3 weeks prevents buildup that causes permanent staining. Avoid prolonged idling and ensure your engine isn't running rich, as unburned fuel accelerates discoloration.