43-859321A3 Reverse Gear For Mercury MERCRUISER 43 859321 V6 828168 5703 Gear Set 1.75:1 3.265"

This is a New Reverse Gear For Mercury Mariner 43-859321A3

Description: 
- Reverse Gear Only
- Standard rotation, non-ratcheting for 3.265" diameter forward bearing gearcase only
- 12 / 21 tooth count 1.75:1 ratio
Fits: Mercury & Mariner 3.0 Liter engines
Manufacturer PN: 43-859321A3 + 43-859322A 1
internal code: 91-216-03AKSEI

Made in Taiwan.