1 years
China
Certification
Manufactured in ISO9001‑certified production facility. CE documents available upon buyer’s request.
13. Real Product Photos
Reverse gear overview shot, gear tooth close‑up view, inner spline detail view, outboard lower unit gearbox installation reference picture
14. Independent Product Description
This rugged marine reverse gear serves as a capable aftermarket replacement matching OEM part number 43‑803741 and cross‑reference 803741. It is built to suit Mercury Mercruiser 9.9‑horsepower, 15‑horsepower and 18‑horsepower two‑stroke and four‑stroke outboard marine engines with 24‑tooth configuration.
Built from wear‑resistant quenched alloy steel, this component goes through accurate CNC machining alongside thorough heat‑treatment steps. Its sturdy physical build keeps steady structural rigidity under heavy shifting pressures and salt‑spray marine surroundings. Hardened gear teeth hold up against chipping and scuffing during repeated forward‑reverse gear shifts.
Every inner bore measurement and spline dimension closely follows OEM tolerance benchmarks. Fitters can complete quick, exact installation, and no trimming or secondary rework is necessary.
This practical service‑grade aftermarket part resolves common gearbox troubles, such as choppy reverse engagement, grinding gear noise, reverse slippage and worn‑out tooth surfaces. Swapping out the aged reverse gear restores smooth reverse function within your outboard lower unit.
Be sure to refer to the official factory service manual for proper mounting and gear‑oil top‑up. Once assembled correctly, your Mercury Mercruiser outboard will deliver reliable shifting performance on open water.
For Tohatsu Outboard Models: M, NS, MFS, NSF 9.9, 15, 18HP series 2 & 4stroke
For Tohatsu Nissan Outboard part number: 362-64030-0 M
For Mercury Mercruiser Quicksilver part number: 43-803741, 803741
Reverse Gear Teeth: 24