Frequently Asked Questions About Kenworth T300-T450 Chrome Stacks & Tops

What years and models are these chrome stacks compatible with?

Our chrome stacks and tops are designed specifically for Kenworth T300, T400, and T450 models manufactured from 1994 through 2007. These parts are engineered to match the exact mounting points and exhaust configurations of these medium-duty trucks. If your truck has been modified with aftermarket exhaust systems, we recommend measuring your current setup or contacting our support team with your VIN to ensure proper fitment.

Are these stacks made from real chrome or chrome-plated steel?

Our Kenworth T300-T450 stacks feature heavy-gauge steel construction with a triple-chrome plating process. This includes copper, nickel, and chrome layers that provide superior corrosion resistance and mirror-like finish. The chrome plating thickness meets or exceeds OEM standards at 0.0005 inches minimum. We also offer 304 stainless steel options for customers in high-salt environments or those seeking maximum longevity without regular polishing.

What tools and hardware are needed for installation?

Installation typically requires basic hand tools including socket wrenches (usually 9/16" and 5/8"), a torque wrench, and potentially a sawzall for removing old stacks. Most of our stack kits include new clamps and mounting hardware. Installation time averages 2-3 hours per stack for experienced mechanics. Some models may require minor bracket adjustments or exhaust pipe modifications. We provide detailed installation instructions with each purchase and offer phone support if you encounter any challenges.

What's the difference between curved, straight, and miter-cut stack styles?

Straight stacks provide a classic vertical look and are the easiest to install, making them popular for fleet vehicles. Curved stacks angle away from the cab at approximately 15-30 degrees, reducing cab soot buildup and providing better rear visibility. Miter-cut tops feature angled cuts (typically 15 or 30 degrees) that direct exhaust away from the truck and create a custom appearance. Bull hauler styles combine curved stacks with larger 6" or 7" diameters for increased exhaust flow. Your choice depends on both aesthetic preference and practical considerations like cargo type and operating conditions.

How do I maintain the chrome finish and prevent discoloration?

Chrome stacks require regular maintenance to prevent heat discoloration and pitting. Clean your stacks weekly with a quality chrome polish and soft cloth, paying special attention to the area near the exhaust outlet where heat damage occurs first. For trucks running high EGTs or extended idle times, consider installing heat shields or stack wraps on the lower portions. Avoid using abrasive cleaners or steel wool, which can scratch the chrome. In winter climates, rinse stacks frequently to remove road salt. With proper care, quality chrome stacks typically maintain their appearance for 3-5 years before requiring re-chroming or replacement.