This is a Hitachi Direct Drive Starter Which Looks Like, But is Larger Than, the 16203. We Recognize Only the Later Style Unit (OEM No. S114-180 - With a 2-Bolt Solenoid Mounting). There Was an Earlier Version (OEM No. S114-126 - Lester 16509) Which Will Interchange Here, But No Clear Application Could Be Found. The 16246 and the 16773 Interchange; There is a Difference in the Solenoid Offset Which May Cause an Installation Problem in Some Cases.