3rd and 4th countershaft gear cluster is a stock ratio gear set with 15 x 17 tooth gears.
Fits:
EL 1936-1940
FL 1941-1975
Fx 1971-1975
UL 1937-1948
UOM: EA
Country Of Origin: TAIWAN
OEM Cross Reference: 35713-36
Accessory Items:
16-0821 – Counter Sprocket Nut Tool
16-1274 – 4-Speed Transmission Arbor Tool
16-0712 – Main Shaft Starter Clutch Puller Tool
16-1807 – Clutch Adjuster Gauge Tool Set
Tech Notes: Speedometer drive is a press fit.