This pulley set has all the pulleys you'll need to complete that serpentine system.
Set contains these pulleys:
1 Crank Pulley
1 Water pump pulley
2 Idler pulleys
1 Alternator pulley
1 Power steering pulley
Use Chart-Pak or other material for the belt (not included).
This is by Machined Aluminum Specialties. 1/25 scale.