Frequently Asked Questions About Mack CV/GU Truck Fuel Tank Accessories

Will these fuel tank straps and brackets fit my specific Mack CV or GU model year?

Our fuel tank accessories are designed to fit Mack CV Series (2002-2020) and GU Series (2004-2020) trucks. However, compatibility can vary based on your specific tank configuration - whether you have single or dual tanks, and tank sizes (50, 75, 100, or 120 gallon). We recommend checking your existing tank measurements and mounting hole patterns before ordering. If you're unsure, contact our support team with your VIN number for exact fitment verification.

Are the fuel tank straps made of stainless steel or regular steel, and will they rust?

We carry both stainless steel and zinc-plated steel options. Stainless steel straps offer superior corrosion resistance and typically last 10+ years even in harsh road salt conditions. Zinc-plated steel straps are more budget-friendly but may show surface rust after 3-5 years depending on your operating environment. For trucks operating in northern states or coastal areas, we strongly recommend investing in stainless steel for long-term durability.

Do I need special tools to install fuel tank straps and brackets, and how long does installation take?

Installation typically requires basic hand tools: socket set (usually 15mm-19mm), torque wrench, and potentially a floor jack to support the tank during strap replacement. Most experienced mechanics complete the job in 1-2 hours per tank. The main challenge is safely supporting the fuel tank weight - we recommend draining the tank to 1/4 full or less before starting. Always replace both straps as a set to ensure even tank support.

What's the difference between OEM and aftermarket fuel tank steps, and which should I choose?

OEM steps are exact factory replacements with guaranteed fit but typically cost 40-60% more. Our aftermarket options from brands like Minimizer and Jones Performance offer comparable quality at better prices. The main differences are in mounting brackets - some aftermarket steps may require minor drilling or use universal mounting hardware. For exact bolt-on fitment without modifications, choose OEM. For value and customization options, aftermarket steps work excellently.

Can I add auxiliary fuel tanks or increase capacity on my Mack CV/GU, and what's involved?

Yes, many CV/GU models can accommodate larger tanks or dual tank setups. Common upgrades include moving from 75 to 100-gallon tanks or adding a second tank. You'll need compatible tank straps, crossmembers, fuel lines, and potentially a balance line for dual setups. Frame rail spacing and exhaust configuration affect feasibility. Professional installation is recommended for auxiliary tank additions as it involves fuel system modifications and DOT compliance considerations.