Kenworth W900A Exhaust Parts

Frequently Asked Questions About Kenworth W900A Exhaust Parts

What years and models are compatible with these W900A exhaust parts?

Our Kenworth W900A exhaust parts are designed specifically for W900A models produced from 1961 to 1986. While many components share similar mounting patterns across these years, we strongly recommend verifying your truck's specific year and engine configuration before ordering. Key differences exist between pre-1973 and post-1973 models due to emissions regulations. If you're unsure about compatibility, please contact us with your OEM or model year, and we'll help ensure proper fitment.

Are these exhaust stacks chrome or stainless steel, and what's the difference in durability?

We offer both chrome-plated and polished stainless steel options. Chrome stacks provide that classic mirror finish but require regular polishing and may show pitting after 3-5 years depending on your climate and road conditions. Stainless steel stacks cost approximately 20-30% more initially but resist corrosion better and maintain their appearance with less maintenance. For trucks operating in salt belt states or coastal areas, stainless steel typically proves more cost-effective long-term.

What tools and time are required for a typical exhaust stack installation?

A standard exhaust stack installation requires basic hand tools including socket wrenches, clamps, and potentially a sawzall for removing old components. Most experienced mechanics complete the job in 2-4 hours. Common challenges include rusted mounting brackets and ensuring proper alignment to prevent cab contact. We recommend having exhaust sealant, new clamps, and mounting hardware on hand. Professional installation typically runs $200-400 depending on your location and the complexity of your setup.

What's the difference between straight pipes, curved stacks, and miter cut options?

Straight pipes offer maximum exhaust flow and the classic long-hood look, typically extending 36-48 inches above the cab. Curved stacks angle away from the cab to reduce soot buildup on the sleeper and are popular for over-the-road applications. Miter cuts affect both appearance and sound - standard cuts provide moderate tone, while aggressive angles create louder exhaust notes.

How do I prevent exhaust leaks at the connections and what maintenance is required?

Exhaust leaks commonly occur at clamp connections and flex pipe joints. Use high-temperature exhaust sealant rated for at least 1200?F at all connections during installation. Retorque clamps after the first 500 miles as thermal cycling can cause loosening. Check connections monthly and look for black soot trails indicating leaks. Chrome stacks need polishing every 2-4 weeks to prevent discoloration, while stainless requires only periodic cleaning with appropriate metal polish. Replace exhaust rain caps annually as the springs weaken over time.