Description
Mercury 8M0030784 Keyed Washer 65-150HP 4-Stroke
The Mercury 8M0030784 Keyed Washer is a genuine OEM replacement washer used on select Mercury and Mariner 4-stroke outboard applications. This keyed washer is commonly found in gear housing, propeller shaft, and driveshaft housing extension kit assemblies for compatible 65HP through 150HP outboards.
Key Features
- Genuine Mercury keyed washer replacement part
- Part number: 8M0030784
- Catalog part reference: 14-8M0030784
- Used in select Mercury and Mariner 4-stroke outboard assemblies
- Fits compatible 65HP to 150HP outboard applications
- Commonly used in gear housing, propeller shaft, and driveshaft housing extension kit assemblies
- Applicable to standard rotation and counter rotation gear housing configurations where specified
- Supports 2.07:1 and 2.38:1 gearcase-related applications where listed in parts diagrams
Fitment / Product Details
- Brand: Mercury
- Manufacturer: Mercury Marine
- Part Number: 8M0030784
- Catalog Reference: 14-8M0030784
- Product Type: Keyed washer
- UPC / GTIN: 745061884502
- Application: Select Mercury and Mariner 4-stroke outboard gear housing, propeller shaft, and driveshaft housing extension kit assemblies
- Engine Types: 4-stroke EFI, 4-stroke EFI Jet, 4-stroke EFI Pro XS, and 4-stroke EFI SeaPro applications where specified
- HP Range: 65HP to 150HP
- Assembly Locations: Gear housing, propeller shaft assembly, bearing carrier area, and driveshaft housing extension kit applications
- Gearcase Applications: 2.07:1 and 2.38:1 applications where listed
- Rotation Applications: Standard rotation and counter rotation applications where specified
Expanded Fitment
- 65 HP EFI Jet 4-Stroke: Serial range 2B095049 & Up
- 75 HP EFI 4-Stroke: Serial range 2B095049 & Up
- 75 HP EFI SeaPro 4-Stroke: Serial range 2B095049 & Up
- 80 HP EFI 4-Stroke: Serial range 2B095049 & Up
- 80 HP EFI Jet 4-Stroke: Serial range 2B095049 & Up
- 90 HP EFI 4-Stroke: Serial range 2B095049 & Up
- 90 HP EFI SeaPro 4-Stroke: Serial range 2B095049 & Up
- 100 HP EFI 4-Stroke: Serial range 2B095049 & Up
- 115 HP EFI 4-Stroke: Serial range 2B095049 & Up
- 115 HP EFI SeaPro 4-Stroke: Serial range 2B095049 & Up
- 115 HP EFI Pro XS 4-Stroke: Serial range 2B225488 & Up
- 135 HP EFI 4-Stroke: Serial range 2B131942 & Up
- 150 HP EFI 4-Stroke: Serial range 1B905505 & Up
- 150 HP EFI SeaPro 4-Stroke: Serial range 2B139139 & Up
Why You Should Buy
- Correct OEM keyed washer for applications that call for Mercury part number 8M0030784
- Helps ensure proper fitment in supported lower-unit and driveshaft housing assemblies
- Ideal for marine repair, gear housing service, and outboard maintenance
- Supports accurate replacement when matched by part number, engine model, serial range, and parts diagram
Common Applications
- Mercury 65HP to 150HP 4-stroke outboard service
- Mariner 65HP to 150HP 4-stroke outboard service
- Gear housing and propeller shaft assembly repairs
- Driveshaft housing extension kit service
- Standard rotation and counter rotation gearcase applications where specified
- EFI, Jet, Pro XS, and SeaPro outboard applications requiring part number 8M0030784
FAQ
- What is Mercury 8M0030784? Mercury 8M0030784 is a keyed washer used in select Mercury and Mariner 4-stroke outboard assemblies.
- What horsepower range does this washer fit? This keyed washer is listed for select 65HP through 150HP Mercury and Mariner 4-stroke outboards.
- What engine types does it fit? It fits select 4-stroke EFI, EFI Jet, EFI Pro XS, and EFI SeaPro applications where part number 8M0030784 is specified.
- Where is this washer used? It is commonly used in gear housing, propeller shaft, bearing carrier area, and driveshaft housing extension kit assemblies.
- Does this fit 115 Pro XS models? Yes, it is listed for 115 HP EFI Pro XS 4-stroke applications with serial range 2B225488 & Up.
- Does this fit 150HP 4-stroke models? Yes, it is listed for 150 HP EFI 4-stroke applications with serial range 1B905505 & Up and 150 HP EFI SeaPro applications with serial range 2B139139 & Up.
- Does this fit standard and counter rotation gearcases? It is listed in both standard rotation and counter rotation gear housing applications where specified by the parts diagram.
- How should I confirm fitment? Match part number 8M0030784 to your engine model, serial number, gearcase configuration, and official parts diagram before ordering.