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MerCruiser Shift Shaft Bushing Assembly 65529-1 (OEM)
The 65529-1 Shift Shaft Bushing Assembly is a genuine Mercury MerCruiser OEM component designed specifically for Alpha One Gen II sterndrives. This assembly supports and seals the shift shaft where it enters the drive housing, ensuring precise shifting and proper sealing.
Fitment Overview
This OEM part replaces and supersedes earlier Mercury / MerCruiser part numbers including 815921A2, 815921A6, 815921A8, 815921A10, 815921A17, and 815921A21.
All of these part numbers correspond to the same shift shaft bushing assembly used in Alpha One Gen II sterndrive applications.
Compatibility
| Brand | Drive Model | Application |
|---|---|---|
| MerCruiser | Alpha One Gen II | Sterndrive |
| MerCruiser | Alpha One Gen II (all gear ratios) | Sterndrive |
This component is used in Alpha One Gen II drives across a wide range of marine applications.
Fits These Serial Ranges
Common applications include Alpha One Gen II sterndrives beginning approximately at serial range:
- 0D469859 and newer Alpha One Gen II production
Important: Always confirm compatibility using your sterndrive serial number or OEM part number.
Looking for a cost-effective aftermarket alternative?
View Pro Marine Shift Shaft Bushing Assembly 65529
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Mercury / MerCruiser OEM | 65529-1 |
| Mercury / MerCruiser OEM | 815921A2 |
| Mercury / MerCruiser OEM | 815921A6 |
| Mercury / MerCruiser OEM | 815921A8 |
| Mercury / MerCruiser OEM | 815921A10 |
| Mercury / MerCruiser OEM | 815921A17 |
| Mercury / MerCruiser OEM | 815921A21 |
| Aftermarket | 65529 (Pro Marine) |
What This Part Is Used For
This shift shaft bushing assembly supports the shift shaft and seals the entry point into the sterndrive housing. It ensures proper alignment and prevents water from entering the drive.
- Maintains shift shaft alignment
- Provides sealing at the drive housing
- Ensures smooth gear engagement
- Helps protect internal drive components
Using a genuine OEM part ensures proper fit, sealing, and long-term durability.
System Function and Connections
- System Type: Sterndrive shifting system
- Component Type: Shift shaft bushing assembly
- Location: Alpha One Gen II drive housing
FAQ
Is this a genuine Mercury part?
Yes, this is an OEM Mercury MerCruiser component.
What does this part fit?
It fits MerCruiser Alpha One Gen II sterndrives.
Does this replace older part numbers?
Yes, it replaces 815921A2, A6, A8, A10, A17, and A21.
Why choose OEM?
OEM parts are manufactured to exact specifications for proper fit and long-term reliability.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
65529-1, 815921A21, 815921A10, 815921A8, 815921A6, 815921A2, MerCruiser Alpha One Gen II shift shaft bushing
21015
815921A10
815921A17
815921A2
815921A21
815921A6
815921A8
9-76136
884323T01
Mercury Propeller Hardware
Mercury Heavy Duty Propeller Washer 8M0204711
Mercury 8M0204711 is a propeller washer used during propeller installation on select Mercury outboards, MerCruiser sterndrives, and Mercury Racing applications. It is commonly used as part of the propeller hardware stack to help retain the prop nut on the shaft.
This washer supersedes Mercury part numbers 8403831 and 840383 and may also be shown as 12-8M0204711. Fitment varies by gearcase, drive, prop shaft size, and propeller hardware setup, so verify by model and serial number before ordering.
Compatible Applications
| Brand | Engine / System | Application | Fitment Note |
|---|---|---|---|
| Mercury | Select outboards | Propeller shaft hardware | Common on larger or heavy-duty prop shaft applications where this washer is listed |
| Mercury Racing | Select Sport Master and Torque Master style gearcases | Prop nut retaining washer | Often associated with heavy-duty propeller hardware and larger prop shafts |
| MerCruiser / Mercury Racing | Select performance sterndrives | Propeller installation hardware | Common on Bravo XR and similar heavy-duty prop shaft applications where specified |
Important Fitment Note
Propeller washers vary by prop shaft size, gearcase, drive type, and propeller hardware kit. Always confirm compatibility using your engine or drive serial number, prop shaft size, and existing hardware before ordering.
OEM & Cross Reference Numbers
| Current Mercury Number | 8M0204711, 12-8M0204711 |
| Superseded Mercury Numbers | 8403831, 840383 |
| Description | Propeller washer / retaining washer |
What This Part Is Used For
This propeller washer is installed with the propeller hardware on select Mercury and MerCruiser propeller shafts. It helps support proper prop nut retention and is often used as part of the propeller hardware kit.
Replace damaged, bent, corroded, or missing propeller washers during prop service. Reusing worn prop hardware can increase the chance of improper nut retention or hardware loosening during operation.
Key Features and Benefits
- Current Mercury number 8M0204711
- Also listed as 12-8M0204711
- Supersedes Mercury 8403831 and 840383
- Used as propeller retaining hardware on select Mercury and MerCruiser applications
- Common service item during propeller changes, gearcase service, or prop hardware replacement
- Helps maintain proper prop nut retention when installed with the correct hardware stack
FAQ
Is 8M0204711 the same as 8403831 and 840383?
Yes. Mercury 8M0204711 is the current number and supersedes 8403831 and 840383.
Where does this washer install?
It installs on the propeller shaft as part of the propeller hardware stack and helps retain or lock the prop nut, depending on the application.
Does this fit all Mercury propellers?
No. Fitment depends on the gearcase, drive model, prop shaft size, and hardware kit. Verify your serial number and existing prop hardware before ordering.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
Mercury propeller washer, Mercury prop washer, Mercury retaining washer, Mercury tab washer, MerCruiser propeller washer, Mercury Racing prop hardware, Sport Master prop washer, Torque Master prop washer, Bravo XR prop washer, heavy duty prop shaft washer, prop nut washer
Searchable Part Numbers
8M0204711, 12-8M0204711, 8403831, 840383
840383
8403831
884329T
807929A1
807929A2
815922A1
815922A5
821759A1
821759A2
821759A3
821759A4
Verado Gen B Adapter Fitting – Pump to Pressure Fitting
Designed for Mercury Verado Gen B power steering systems. The 8M0147795 Adapter Fitting connects the male power steering pump fitting to the male Verado pressure fitting. This Fitting is used within the hydraulic steering system to properly route fluid between key components.
Compatibility
This adapter Fitting is used on Mercury Verado Gen B outboards with hydraulic power steering systems. It is specifically designed for systems requiring a male-to-male connection between the pump and pressure-side steering components.
Application Chart
| Brand | Engine Family | System | Connection Type | Application |
|---|---|---|---|---|
| Mercury | Verado Gen B | Power Steering | Male to Male Adapter Hose | Pump to Pressure Fitting |
Only fits Gen B Verado steering systems. Always confirm compatibility using your engine serial number and hose configuration.
Part Numbers & Cross References
| Reference Type | Part Number |
|---|---|
| OEM Part | 8M0147795 |
What This Part Is Used For
This adapter Fitting is used to connect the power steering pump to the pressure-side fitting in Mercury Verado Gen B steering systems. It ensures proper hydraulic fluid routing and system pressure.
Because this Fitting connects two male fittings, it is a critical link in systems where standard hose connections are not compatible. Replacing worn or leaking hoses helps maintain consistent steering performance and prevents hydraulic fluid loss.
Related Steering Components
This adapter hose is part of a complete Mercury Verado Gen B steering system and is commonly used with the following components:
- Mercury Verado Gen B Power Steering Pump 8M0134736P – Provides hydraulic pressure for the steering system.
- Damper Hose Kit 897643A01 – Helps regulate hydraulic pressure and reduce steering feedback.
- Helm to Power Steering Pump Hose 8M0078213 – Connects the steering helm to the pump on the pressure side.
Frequently Asked Questions
What does this adapter Fitting connect?
It connects the Gen B power steering pump to the Verado pressure-side fitting on the helm using a male-to-male configuration.
Is this Gen B specific?
Yes. This Fitting is designed specifically for Mercury Verado Gen B steering systems.
Why is this adapter needed?
It allows proper connection between components with matching male fittings where a standard hose cannot be used.
When should this hose be replaced?
If there are signs of leaks, cracking, or reduced steering performance.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer or technician? We offer dealer pricing for qualified businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.)
- Ships via UPS, USPS, and FedEx
- 5:30 PM EST daily cutoff
- Typical delivery 1–5 business days
30-Day Return Policy
- Returns within 30 days
- Items must be unused and in original packaging
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
Part Number: 8M0078213
Common Searches: Mercury Verado steering hose, helm to pump hose, power steering pressure hose, 16ft steering hose, Verado hydraulic hose
Mercury Engine Cradle and Mounting
Mercury 8M0142936 Front Cradle Cover
Mercury 8M0142936 is a front cradle cover used in the engine cradle or mounting area on select Mercury 4.6L V8 outboards with AMS, including 250, 300, and 300R applications.
This cover helps protect and finish the front cradle area. Because this is a model and serial specific structural or rigging-area part, always confirm fitment by engine serial number before ordering.
Compatible Applications
| Brand | Engine / System | Application | Fitment Note |
|---|---|---|---|
| Mercury | 4.6L V8 AMS Outboards | 250, 300, and 300R models with Advanced Midsection | Verify by serial number and engine configuration |
| Mercury Racing | V8 AMS Performance Applications | Front cradle / mounting cover location | Confirm with parts diagram for your serial number |
Important Fitment Note
Always confirm compatibility using your engine serial number, model, and existing part number before ordering. This part is specific to certain Mercury 4.6L V8 AMS cradle and mounting configurations.
OEM & Cross Reference Numbers
| Mercury OEM Number | 8M0142936 |
| Description | Cover, Cradle Front |
| Other References | Front cradle cover, mounting cover, cradle front cover |
What This Part Is Used For
The front cradle cover is used in the engine cradle or mounting area of select Mercury V8 AMS outboards. It helps cover, shield, or finish the front cradle section depending on the engine configuration.
Replacement may be needed if the original cover is cracked, missing, damaged during service, or no longer securing properly in the cradle area.
Key Features and Benefits
- Genuine Mercury OEM part number 8M0142936
- Front cradle cover for select Mercury 4.6L V8 AMS applications
- Used in the engine cradle or mounting cover area
- Helps protect and finish the front cradle section
- Best matched by engine serial number and parts diagram
FAQ
What is Mercury 8M0142936?
8M0142936 is a Mercury front cradle cover used in the engine cradle or mounting area on select Mercury V8 AMS outboards.
Does this fit all Mercury V8 outboards?
No. This part is associated with select 4.6L V8 AMS applications, including 250, 300, and 300R models. Verify by serial number before ordering.
Is this a service maintenance part?
This is not a routine maintenance part. It is normally replaced when the original cradle cover is missing, cracked, damaged, or removed during repair.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
Mercury front cradle cover, Mercury cradle front cover, Mercury mounting cover, Mercury AMS cradle cover, 4.6L V8 AMS cover, Mercury 300R front cradle cover, Mercury V8 mounting area cover
Searchable Part Numbers
8M0142936, Mercury 8M0142936