Mounts the alternator to the Passenger side, replacing the factory tensioner.
Requires a new belt tensioner, add one to your order or you can source locally
Truck spacing fits 99 to current Vortec truck or 2010+ Camaro LS3
4405-10 is lower and closer to the engine center than the 4405; however, the 4405-10 only fits with truck belts spacing and sometimes has clearance issues with the drive by wire throttle body motors and oil filler tube
4405-LS3 is for the 2010+ Camaro LS3 water pump (same as truck spacing)