WA20-31-5003 is an automatic transmission oil pump thrust washer. It’s designed as a direct-fit replacement thrust plate for the oil pump assembly in applicable automatic transmissions. Pro Gear and Transmission stocks this part for shops and fleets sourcing exact-match hydraulic pump components.Interchanges:3912185063FeaturesAutomatic transmission oil pump thrust washerPart number WA20-31-5003P315 thrust plate design