32703-78100 PINION-SPEEDOMETER / Pinion-Speedometer 16T / Lookup Code 32703 (1) Pinion Speedometer. Plug Checking Ball. PINION-SPEEDOMETER is Lookup Code 32703 in the diagram attached. (1) Part Fitment (1) ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Make Model Year Trim Engine Important vehicle option details ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Nissan 280ZX 1979-1980 NON GL 6 Cyl 2.8L L28E ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 1) https://www.nissanpartsdeal.com/parts/nissan-pinion-speedo~32703-78100.html 2) https://parts.nissanoflumberton.com/p/89617501/32703-78100.html 3) https://www.totalzparts.com/product/datsun-240z-260z-280z-280zx-speedometer-pinion-gear-16-teeth-wretaining-pin-nos/ ___________________________________________________________________________________________________________________________________________________________________ The vehicle options this part fits: (1) Production Date: 07/1978-07/1979 Fitting Vehicle Options: NON. J. MT. F5 ___________________________________________________________________________________________________________________________________________________________________ Additional Information: (3) NOS (new old stock) speedometer pinion gear full assembly, including the sleeve, seals, and the retaining pin. It has a 20-teeth gear & measures about 3 1/16" in total length. 17, 18 and 19 teeth gear assemblies are listed separately. Please make sure you compare this assembly and gear to your existing assembly. Some Datsun transmission use a different longer gear. Below is a guide on how to choose the proper speedometer pinion for your car; the number of teeth you need is based on the rear differential gear ratio. Applicable models: Datsun 240z, 260z, 280z, 280zx (1970-1983). Also, Datsun 510 (1968-1973). Datsun 200SX (from 07/81-07/83) Gear Ratios 16 Teeth Gear: 3.36 Ratio 17 Teeth Gear: 3.54 Ratio 18 Teeth Gear: 3.70 Ratio 19 Teeth Gear: 3.90 Ratio Datsun Models & Corresponding Diff Ratios (from factory) 240Z 70-73 MT (3.36) (R180) 240Z 70-73 MT 5spd. (3.90) (R180) - non US 240Z 71-73 Auto (3.54) (R180) 260Z 74 MT (3.36) (R180) 260Z 74 Auto (3.54) (R180) 280Z 75-76 (3.54) (R200) 280Z 77-78 MT (3.54) (R200) 280Z 77-78 Auto (3.54) (R180) 280ZX 79 MT,4 Spd,2 Seater (3.36) (R180) 280ZX 79 MT,5 Spd,2 Seater (3.36) (R180) 280ZX 79 All With Automatic(3.54) (R180) 280ZX 79 MT,4 Spd,4 Seater (3.36) (R200) 280ZX 79 MT,5 Spd,4 Seater (3.70) (R200) 280ZX-GL 79 (3.70) (R200) 280ZX 80 MT,2 Seater (3.54) (R180) 280ZX 80 Automatic 2/4Seat (3.54) (R180) 280ZX 80 MT,4 Seater (3.90) (R200) 280ZX-GL 80 (3.90) (R200) 280ZX 81-83 Automatic all (3.54) (R180) 280ZX 81-83 Turbo - all (3.54) (R200) 280ZX 81-83 MT (3.90) (R200) Datsun 510: 1968 (3.70) (R160) Datsun 510: 1969-1973 (3.90) (R160) ___________________________________________________________________________________________________________________________________________________________________