Mazda RX-7(Gen 1 and 2) Fuel injector identification guide

Year | type | impedance | plug style | plug notch position | flow rating | color | part number

------------------------------------------------------------------------

84-85 | 13B NT | low  | square | center | 680cc | orange | 195500-0900
86-87 | 13B NT | low  | square | center | 460cc | red    | 195500-1350
86-87 | 13B T  | low  | square | center | 550cc | tan    | 195500-1370
88    | 13B NT | high | square | offset | 460cc | purple | 195500-1350
88    | 13b T  | high | square | offset | 550cc | purple | 195500-1370
89-91 | 13B NT | high | oval   | center | 460cc | red    | 195500-2010
89-91 | 13B T  | high | oval   | center | 550cc | purple | 195500-2020