Seal Oil For Use With Mfr Model Number CH18-26 CH620-CH752 CV18-25 CV620-752 LH640-LH775 PCH680-740 PCV680-740 SV710-840 ECH630-ECH749 ECV630-EVC749 KT715-745 ZT710-ZT740 Fits Brand Kohler Engines For Use With Most Kohler Engines Diameter ID 1-1/2 In.