In 1936 Toyota held a contest to create a new logo for their brand, this was the contest winner and it stayed for a very long time. It was later replaced by the logo we see now, but stuck around on the engine blocks of iconic engines like the 2JZ way into the 90s.

I wanted to make a more stylized version of the original Emblem so i foujnd the actual way that these symbols would be hand written in Japanese Katakana.
 
Known Vehicle Fitment, please measure your original emblems before purchasing:
100mm: Corolla iM rear, FRS/BRZ Rear
110mm: 11th Gen Corolla Rear
113mm: 3rd Gen 4Runner Front
118mm: GX470 Rear
120mm: FRS/BRZ Front
127mm: Scion xB2.5 Rear
130mm: 5th Gen 4Runner Rear 
140mm: Scion xB2.5 Front, GX470 Front
150mm: 5th Gen 4Runner Front
 
Dimensions:  (L x H x D)
100mm x 69mm x 10mm
110mm x 76mm x 10mm
113mm x 79mm x 10mm
118mm x 81mm x 10mm 
120mm x 83mm x 10mm
127mm x 88mm x 10mm
130mm x 90mm x 10mm
140mm x 97mm x 10mm 
150mm x 104mm x 10mm