Muffler dimensions
Match inlet and outlet sizes, body diameter and overall length. Compare any listed interchange references with the existing part.
Semi-Truck Mufflers & Exhaust Shields
Compare the listed 5-inch inlet/outlet exhaust muffler with stainless exhaust shields in different diameters, wraparound coverage and surface styles. Check whether you need a replacement muffler or an exterior shield before selecting a product.
Match the muffler’s connection sizes, body dimensions and interchange references, or compare a shield’s listed diameter, height and mounting arrangement. This collection also includes a Peterbilt 589 7-inch exhaust stack heat shield kit.
US$137.79
Choose the Right Muffler or Exhaust Shield
Shield coverage
Compare diameter, height and 180- or 270-degree wraparound coverage. Choose the required surface style after checking fitment.
Mounting & kit contents
Confirm the mounting arrangement and included hardware. Check the Peterbilt 589 heat shield kit separately from the other shield listings.
Before ordering: Identify whether you need a muffler or exterior shield, then confirm the dimensions, application and included parts for the exact listing.
Muffler & Exhaust Shield FAQs
What is the difference between a muffler and an exhaust shield?
A muffler is part of the exhaust flow path and manages exhaust sound. A shield is fitted around the outside of the specified exhaust component. A shield is not a replacement muffler; check which type of part is required before ordering.
What does 5-inch by 51-inch mean on the muffler listing?
The listed muffler has 5-inch inlet and outlet connections and a 51-inch overall length. Its body is listed as 10 inches in diameter and 44-1/2 inches long. Compare all these dimensions with the existing installation rather than treating the inlet size as the body diameter.
How do I check replacement muffler fitment?
Compare inlet and outlet sizes, body diameter, overall length and mounting space. The listed muffler references interchange numbers M100465, 86682M and 86130M. Match the measurements and references to your existing component before ordering.
What do 180-degree and 270-degree shield coverage mean?
These numbers describe how far the shield wraps around the specified exhaust component, rather than a pipe bend angle. Compare the required coverage, listed diameter and mounting arrangement for the exact shield.
Which shield sizes and surface styles are listed?
The 48-inch-tall shield listings include 180-degree options for 5-, 6-, 7- and 8-inch diameters, and 270-degree options for 9- and 10-inch diameters. Plain, round-slot and vertical-slot styles are listed, with horizontal-slot options among the 270-degree shields. Check the exact product for availability and fitment.
Are mounting brackets included with every shield?
Check the exact included-parts section. The reviewed 48-inch plain 180-degree shield for 5-inch exhaust lists a mounting bracket kit. Do not assume every shield or model-specific kit includes the same hardware.
Is the Peterbilt 589 heat shield kit a universal shield?
Treat it as a separate model-specific listing. The listing specifies 5-inch muffler pipes and 7-inch top stacks, with shields measuring 7.5 inches wide by 64 inches tall. The kit includes two shields, four clamps and mounting hardware; exhaust pipes are separate. Compare the actual brackets and clearance before ordering.
Are the muffler and shields made from the same material?
No. The listed 5-inch by 51-inch muffler specifies heavy-gauge steel with aluminized plating. The reviewed plain 5-inch 180-degree shield specifies polished 304 stainless steel. Check the exact product specifications for each item.