JT30040B Crankshaft Rear Main Seal Installer Fit for John Deere 152 164 180 202 219 239 329 359 414 Engine Install Tool Replace forJT30040 KCD10002A ST-218. Also Supersedes JT30040 and ST-218. 【WIDE APPLICATION】 The JT30040B Rear Main Seal Installer Tool is compatible with 4045 Engines, 5075E & JD models (820 3cyl.).