Limited Slip Posi Traction Control System,Diff Lock, for EZGO Yamaha Fits Golf Cart Models with Dana Rear End EZGO 1998 &Up electric golf cart(part number:616084) Yamaha Gas G11,G16,G20,G21,G22 or Electric G16,G19,G22 only The diff lock system can increase braking performance Better traction and gripping power in muddy conditions, sand, grass, etc.