The term "mixing unit" is restricted to the rotating mixer and the accessories necessary for connecting it with the motor. Where a separate motor operates the rotating mixer exclusively, such motor is exempt from the sales tax, but where a motor operates the truck and also the rotating mixer, the motor is regarded as a part of the truck proper, and repair or replacement parts are not exempt. Repair or replacement parts for the mixing unit itself are exempt; but tires, tubes, batteries, oil, and all repair or replacement parts for the truck portion of the mixer-truck are taxable.
23 Va. Admin. Code § 10-210-360
Statutory Authority
§§ 58.1-203 and 58.1-609.3(2) of the Code of Virginia.