Frequently Asked Questions About Mack R Truck Fuel Tank Brackets & Straps

What years and models of Mack R trucks do these fuel tank brackets and straps fit?

Our fuel tank brackets and straps are designed to fit Mack R-Model trucks from 1966 through 2004, including the R600, R685, R686, R688, RD600, RD688, and RD690 series. However, compatibility can vary based on your specific tank configuration and whether you have single or dual tank setups. We recommend checking your existing bracket measurements or contacting our support team with your VIN for exact fitment confirmation.

Are these brackets made from stainless steel or regular steel, and how do they hold up against rust?

We carry both stainless steel and powder-coated steel options. Stainless steel brackets offer superior corrosion resistance and typically last 15-20 years in harsh conditions. Our powder-coated steel brackets feature a heavy-duty coating that provides good rust protection for 5-10 years with proper maintenance. For trucks operating in salt-heavy regions or harsh weather conditions, we strongly recommend the stainless steel option for maximum longevity.

How difficult is it to install these brackets and straps, and what tools will I need?

Installation typically takes 2-4 hours depending on your experience level and whether you're replacing existing brackets or doing a complete mount. You'll need basic hand tools including socket wrenches (typically 3/4" and 7/8"), a torque wrench, and potentially a jack to support the tank during installation. Some installations may require minor drilling for mounting holes. Many customers successfully complete this as a DIY project, though having a helper to support the tank makes the job significantly easier.

What's the difference between universal and OEM-style brackets, and which should I choose?

OEM-style brackets are direct replacements that match your truck's original mounting points and dimensions exactly, making installation straightforward with no modifications needed. Universal brackets offer more flexibility in positioning and can accommodate various tank sizes, but may require additional mounting hardware or slight modifications. Choose OEM-style for the easiest installation and factory appearance, or universal if you're running custom tank sizes or need adjustable positioning.

How do I know when my fuel tank straps need replacement, and can I replace just the straps without the brackets?

Replace your straps if you notice visible rust, cracking, fraying, or if they've stretched beyond adjustment range. Yes, you can replace straps independently of brackets if the brackets are still in good condition. However, we recommend inspecting both components together since they typically wear at similar rates. When ordering replacement straps, ensure you specify your tank diameter and length, as strap sizes vary significantly between 25-gallon and 150-gallon tank configurations.