8006
D: 60    W: 32.6    H:- 
Tensioner
Tensioner Function
It is rotated with a peanut hole as the central figure;
1.       Easy install of timing belt
2.       Set up initial belt tension with tension spring force
3.       It keeps up belt tension after installing on engine
4.       Reduce belt span vibration as supporting belt
Idler
Idler Function
Most of case, It locates tight (right) side;
1.       Increase belt wrap angle of cam pulley and crankpulley
2.       Reduce belt span vibration as supporting belt
3.       It keeps up belt tension after installing on engineldler could be added or removed according to engine layout