Compatible With Kohler: Compatible with Toro Mowers with CH18 18HP Engines, Compatible with MTD Mowers with CH18 18HP Engines
Part Numbers: Exhaust Valve: 3201601-S / Intake Valve: 2401701-S
Dimensions: Exhaust Valve: Length: 93.5 mm - 3.7 in, Width: 29.4 mm - 1.2 in, Height: 29.4 mm - 1.2 in / Intake Valve: Length: 93.5 mm - 3.7 in, Width: 33.4 mm - 1.3 in, Height: 33.4 mm - 1.3 in
We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced.