Frequently Asked Questions About Kenworth Cabover Chrome Stacks & Tops

What are the differences between straight-cut and angle-cut stack tops, and which should I choose?

Straight-cut tops provide a classic, traditional look and are typically easier to install. Angle-cut tops (usually 15 to 30 degrees) offer a more aggressive appearance and can help direct exhaust away from your cab. Most drivers choose angle-cut for better exhaust flow management, especially if you frequently idle or operate in areas with strict emissions visibility requirements. Both styles fit standard 5-inch and 6-inch diameter stacks.

Will these chrome stacks fit my specific Kenworth cabover model and year?

Our chrome stacks are designed to fit most Kenworth cabover models including K100, K100E, and K123 from the 1960s through 1990s. The critical measurement is your existing exhaust pipe diameter - most cabovers use either 5-inch or 6-inch pipes. Before ordering, measure your current exhaust outlet diameter and verify the stack mounting bracket style (band clamp vs. flange mount). Contact us with your specific model year if you need confirmation.

How difficult is the installation process, and what tools will I need?

Installation typically takes 1-2 hours per stack with basic hand tools. You'll need a socket set (usually 9/16" and 5/8"), band clamps or mounting hardware (often sold separately), and high-temp exhaust sealant. Most installations involve removing the old stack, cleaning the mounting area, applying sealant, and securing the new stack with clamps. Professional installation runs $50-100 per stack if you prefer not to DIY.

How long will the chrome finish last, and what maintenance is required?

Quality chrome stacks feature triple-chrome plating over steel construction and can maintain their mirror finish for 5-10 years with proper care. Regular maintenance includes weekly washing with mild soap, monthly polishing with chrome-specific products, and avoiding harsh chemicals or abrasive cleaners. Winter road salt requires more frequent cleaning. Some drivers apply a thin coat of WD-40 before long-term storage to prevent pitting.

What's the difference between economy and premium chrome stacks?

Economy stacks typically use thinner gauge steel (16-18 gauge) with standard chrome plating and may show wear within 2-3 years. Premium stacks feature heavier 14-gauge steel, triple-chrome plating, reinforced mounting brackets, and often include heat shields. The price difference ($100-200 per stack) reflects the durability - premium stacks resist heat discoloration better and maintain their finish longer under heavy use conditions.