The Western Star 4700 Truck Exhaust category provides top-quality components to keep your truck's exhaust system running efficiently. You can replace or upgrade your exhaust for better performance and appearance with parts like mufflers, DPF systems, clamps, elbows, and piping. Whether you want to boost power, reduce emissions, or maintain a clean look, this category offers everything you need to enhance your truck's exhaust system.
Frequently Asked Questions About Western Star 4700 Truck Exhaust Parts
What exhaust pipe diameter fits my Western Star 4700, and how do I measure it correctly?
Most Western Star 4700 trucks use 5-inch diameter exhaust systems, though some models may have 4-inch systems. To measure correctly, use a tape measure around the outside circumference of your existing pipe and divide by 3.14 to get the diameter. Measure at multiple points as older pipes may be slightly oval from wear. Always verify your truck's specific year and engine configuration, as 2011-2018 models with ISX engines typically use 5-inch, while some pre-2011 models may vary.
Will aftermarket exhaust stacks and pipes affect my emissions compliance and warranty?
Aftermarket exhaust components that maintain or exceed OEM specifications typically won't affect emissions compliance. However, removing or modifying DPF/DEF systems will void warranties and violate federal regulations. Stick to EPA-compliant replacement parts that match your truck's original configuration. Chrome stacks and tips are generally fine as long as they don't alter the exhaust flow characteristics or remove required emission components.
How difficult is it to install exhaust components on a Western Star 4700, and what tools do I need?
Basic exhaust replacements like stacks and straight pipes can typically be completed in 2-4 hours with standard tools including socket sets, pipe wrenches, and exhaust hangers. You'll need a floor jack or lift for safe access. The most challenging aspects are aligning heavy components and ensuring proper clearances. DPF or muffler replacements may require specialized clamps and potentially exhaust paste for sealing. Many drivers report success with DIY installation, though shops charge 2-3 hours labor for professional installation.
What's the difference between aluminized steel and 304/409 stainless steel exhaust parts for my 4700?
Aluminized steel parts cost 40-60% less than stainless but typically last 3-5 years in normal conditions, less in salt-heavy regions. 409 stainless offers better corrosion resistance and 5-8 year lifespan at moderate cost increase. 304 stainless provides superior durability (10+ years) and maintains appearance better but costs significantly more. For trucks in northern climates or coastal areas, 409 stainless minimum is recommended. Southern climate trucks can get good value from aluminized steel.
Why do my exhaust clamps keep failing, and what type should I use for Western Star 4700 applications?
Standard band clamps often fail due to the 4700's engine vibration and thermal cycling. Heavy-duty preformed lap joint clamps or V-band clamps provide superior holding power. For 5-inch pipes, use clamps rated for at least 600 ft-lbs torque. Stainless steel clamps prevent corrosion-related failures. Apply anti-seize compound to threads and replace clamps showing any deformation. Many drivers report switching to Donaldson Roadpro or similar heavy-duty clamps eliminates repeated failures.
Western Star 4700 Clamps, Brackets- Mounting
Western Star 4700 Truck Chrome Stacks & Tops
Western Star 4700 Truck DPF & Mufflers
Western Star 4700 Univ Elbows-Piping
