Kohler Engine K91 Parts Lookup by Model Kohler Engine K91 Exploded View parts lookup by model. Complete exploded views of all the major manufacturers. It is EASY and FREE kohler k91 engine | eBay For parts or not working (2) Price. Under $15. $15 to $35. Over $35. Kohler K91 Engine Igniton Coil Part No. 220435 220435-S See more like this. Kohler K91 Engine Cover Shroud. Kohler K91 (4HP) Engine Crankshaft #220019-USED-GEAR REDUCTION See more like this. SPONSORED.