Mustang TVS w/90 mm pulley and 2011-2014 F-150 TVS w/87 mm
pulley Roush Serpentine Drive Replacement Belt 421161
Roush Performance serpentine drive belts feature high modulus glass
fiber non-stretch cords, which deliver precise length stability. They
run quieter and are more affordable than chain drives. They contain
self-lubricating fabric and have exceptional resistance to abrasion.
For proper replacement part, please refer to the long number printed on
the outside of the belt. K060825