Kenworth Cabover Exhaust Parts

Frequently Asked Questions About Kenworth Cabover Exhaust Parts

What years and models of Kenworth cabovers do these exhaust parts fit?

Our Kenworth cabover exhaust parts are designed to fit K100, K100E, and K123 models from 1963 through 1990. The most common applications are for K100E models from 1973-1990. Always verify your specific model year and configuration before ordering, as some variations exist between aerodyne and standard cab designs. If you're unsure about fitment, contact us with your OEM or model information for verification.

Are these exhaust stacks made from stainless steel or chrome-plated mild steel?

We carry both options depending on your needs and budget. Our premium stacks are 304 stainless steel with either a polished or chrome finish, offering superior corrosion resistance and longevity. We also stock chrome-plated mild steel options that provide an excellent appearance at a lower price point. Stainless steel parts typically last 5-7 years longer in harsh conditions. Each product listing clearly indicates the material type.

Do I need special brackets or modifications to install these exhaust parts on my cabover?

Most of our exhaust parts are direct replacements that use existing mounting points. However, K100 models with factory air cleaners may require different brackets than those with aftermarket air cleaners. Stack heights over 60 inches often need additional support brackets. We recommend having new exhaust clamps on hand, as reusing old clamps can cause leaks. Installation typically takes 2-4 hours with basic tools.

What's the difference between curved and straight stack styles for cabovers?

Curved stacks angle away from the cab at approximately 15-30 degrees, directing exhaust away from the sleeper windows and reducing cab soot buildup. Straight stacks offer a classic look but may deposit more exhaust residue on the cab. Both styles are available in 5-inch and 6-inch diameters. Curved stacks are more popular for trucks with sleepers, while straight stacks are often preferred on day cabs for their traditional appearance.

How do I prevent my new chrome exhaust from turning blue or discoloring?

Bluing occurs from excessive heat and is most common in the first 12-18 inches from the turbo outlet. To minimize discoloration, ensure your engine is properly tuned and not running rich. Consider heat wrap for the first section of pipe, or choose our double-wall insulated elbows. For chrome parts, avoid harsh cleaners and use only chrome-specific polishes. Regular cleaning every 2-3 weeks prevents buildup that can cause permanent staining.