Treadmill Doctor Belt for Precor C964i (240 VAC) (serial code 3F 5Q BG BK HS). For those experiencing problems with their treadmill walking belt, Treadmill Doctor has an affordable and high-quality solution. The replacement treadmill walking belt offered by Treadmill Doctor is engineered to handle the constant use common with busy gyms, but is priced for home owners. Engineered with commercial quality, Treadmill Doctor walking belts are perfect for both commercial and residential treadmills. The Treadmill walking mats are 2-ply belts with a durable PVC top coat and polyester-blended backing. This reduces the risk of damage to electrical components common with thicker and less pliable walking belts. While most replacement treadmill walking belts are made from thicker and less pliable materials, our treadmill walking belts are built to withstand daily use and offer value to commercial or home applications. They are 2-ply belts with a durable PVC top coat and a polyester-blended backing that reduces strain on the electrical components that power the treadmill and decreases the risk of damage to those parts. It is recommended to lubricate your walking belt at least once a year to reduce friction and stress on the other components of your treadmill. The treadmill walking belts by Treadmill Doctor have been pre-lubricated and includes an additional application of lube to reduce friction and extend component lifespan. From fitness and rehab facilities to private homeowners, anybody who owns a treadmill will see the value of replacing their worn, torn, or skipping walking belts with a high-quality belt from Treadmill Doctor. Our treadmill walking belts come with a one year warranty that covers defects in materials and workmanship – the industry’s longest warranty. Some models even offer longer warranties!