Volvo VNL Gen II Exhaust Parts

Frequently Asked Questions About Volvo VNL Gen II Exhaust Parts

Will these exhaust parts fit my specific Volvo VNL Gen II model year?

Our Volvo VNL Gen II exhaust parts are designed to fit 2018 and newer VNL models, including the VNL 300, 400, 640, 740, 760, and 860 series. However, some variations exist between model years and engine configurations. We recommend checking your OEM or contacting our support team with your truck's specific year, model, and engine type (D11, D13, or D16) to ensure proper fitment. Most exhaust stacks and tips are universal across Gen II models, but DPF pipes and mufflers may vary by engine.

What's the difference between aluminized and stainless steel exhaust components?

Aluminized steel exhaust parts offer good corrosion resistance at a lower price point and typically last 3-5 years under normal conditions. They're ideal for trucks in moderate climates. Stainless steel options, particularly 304 and 409 grades, provide superior longevity (7-10+ years) and maintain their appearance better, especially in harsh weather conditions or areas with road salt. While stainless costs more upfront, it often proves more economical long-term for high-mileage operations or trucks exposed to severe conditions.

Can I install these exhaust parts myself, or do I need a professional?

Many exhaust components like chrome stacks, tips, and heat shields can be installed with basic tools and mechanical knowledge in 1-2 hours. However, DPF pipes, complete exhaust systems, and muffler replacements often require specialized clamps, hangers, and precise alignment. These installations typically need a lift and may require ECM updates or emissions testing. For warranty compliance and safety, we recommend professional installation for major exhaust system components.

What exhaust stack sizes and styles work best for the VNL Gen II?

The most popular stack sizes for VNL Gen II trucks are 5-inch and 6-inch diameters, with lengths ranging from 48 to 72 inches depending on your sleeper configuration. Straight cut, curved, and mitered styles all fit properly when using the correct mounting brackets. Bull hauler stacks work well on 760 and 860 models but may require additional bracing. Consider your state's height restrictions when selecting stack length - most states allow up to 13'6" total vehicle height.

How do I know when my DPF or exhaust components need replacement?

Common signs include excessive black smoke, reduced fuel economy, frequent regeneration cycles, or check engine lights related to exhaust pressure. Visual indicators include rust perforation, loose connections, rattling sounds, or soot buildup around joints. DPF filters typically last 200,000-400,000 miles with proper maintenance. If your exhaust components show blue or golden discoloration, experience excessive vibration, or have visible cracks, replacement is recommended to prevent costly engine damage or DOT violations.