The Kenworth W900B/W900L Diesel Fuel Tanks product lineup offers a wide range of fuel tank options to meet the diverse needs of Kenworth truck owners. This product lineup features high-quality fuel tanks from BESTfit in capacities ranging from 70 to 150 gallons, with both front and rear fill configurations available. Customers can choose from a variety of tank sizes, mounting positions, and manifold locations to find the perfect fit for their Kenworth T800, W900B, or W900L model. These durable aluminum fuel tanks provide ample storage capacity while maintaining a sleek, aerodynamic profile to improve fuel efficiency. Whether you need a replacement tank or are upgrading to a larger capacity, the Kenworth W900B/W900L Diesel Fuel Tanks product lineup has the perfect solution to keep your truck fueled up and ready for the road.
Frequently Asked Questions About Kenworth W900B/W900L Diesel Fuel Tanks
What's the difference between fuel tanks for the W900B and W900L models?
The main difference lies in the mounting brackets and strap configurations. W900B fuel tanks typically use a different bracket spacing due to the shorter hood design, while W900L tanks accommodate the extended hood length. Both models commonly use 100-150 gallon aluminum or steel tanks, but the mounting hardware and step configurations vary. Always verify your specific truck's wheelbase and year when ordering, as Kenworth made several changes to tank mounting systems between 1987-2020.
Will aftermarket aluminum fuel tanks hold up as well as OEM steel tanks?
Quality aftermarket aluminum tanks from reputable manufacturers offer excellent durability and typically outlast steel tanks in terms of corrosion resistance. Look for tanks with .125" wall thickness minimum and reinforced mounting points. The weight savings (approximately 40-50% lighter than steel) improves fuel economy and payload capacity. However, aluminum tanks require proper isolation from the frame using rubber mounting strips to prevent galvanic corrosion and stress cracks.
What additional parts do I need for a complete fuel tank installation?
Beyond the tank itself, you'll need fuel tank straps (typically 2-3 depending on tank size), mounting brackets specific to your frame rail width, rubber isolation strips, sending unit (if not included), fuel pickup tube, venting system components, and new fuel lines. Many installations also require a crossover kit if running dual tanks. Budget an additional $200-400 for mounting hardware and accessories not included with the tank.
How do I determine the correct tank size and position for my W900?
Measure from the back of the cab to the center of your rear axle, then subtract 24-30 inches for proper clearance. Standard diameters are 23", 24.5", or 26". For position, most W900B/L models use either a 25" or 28" centered mount measured from the back of cab. Step tank configurations vary based on wheelbase - trucks under 230" wheelbase typically use 60-80 gallon tanks, while longer wheelbases can accommodate 100-150 gallon tanks without interference.
Can I upgrade from a single tank to a dual tank setup?
Yes, but it requires additional components including a second tank, Y-fitting or tank selector valve, crossover fuel lines, return line modifications, and potentially a dual-tank sending unit system. The passenger side installation often requires relocating the battery box and exhaust components. Most W900B/L frames have pre-drilled mounting holes for dual tank setups, but verify your specific frame rail configuration first. Professional installation is recommended for dual tank conversions to ensure proper fuel system balance and return flow.
