Description
NOS (new old stock) speedometer pinion gear including the retaining pin. It has a 19-teeth gear & measures 2 7/8″ in total length. Applicable models: Datsun 240z, 260z, 280zx (1970-1983). Also, Datsun 510 (1968-1973). I have 16, 17, and 18 teeth gears listed separately. 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. The 19 teeth gear is meant for a differential with a 3.90 Gear Ratio.
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)