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Outboard Motor Parts | Mercury, Yamaha, Suzuki & More
Shop outboard motor parts for maintenance, repair, troubleshooting, and full marine engine rebuild projects. This category includes OEM parts and quality OEM specification aftermarket products from Pro Marine, along with replacement marine parts for Chrysler Force, Honda, Johnson Evinrude E-tec, Mercury, Suzuki, Tohatsu Nissan, and Yamaha outboard engines.
Use this section to browse outboard parts by brand and engine system, including cooling, fuel delivery, ignition and electrical, intake, internal engine components, lower unit parts, steering, trim, transom, midsection, engine oil, service kits, gaskets, seals, carburetor parts, water pump parts, and rebuild components.
Shop Outboard Categories
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-tec Outboard OMC, Johnson, Evinrude, and E-tec parts 
Mercury Outboard Mercury and Mariner service and rebuild parts 
Suzuki Outboard Suzuki maintenance, lower unit, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha service, repair, and rebuild parts Common Outboard Parts Found in This Category
- Water pump kits, impellers, thermostats, and cooling system parts
- Carburetor kits, fuel pumps, fuel filters, and fuel system components
- Ignition coils, stators, switch boxes, rectifiers, sensors, and electrical parts
- Pistons, piston rings, bearings, crankshafts, sleeves, gaskets, and rebuild parts
- Lower unit seals, bearings, gears, driveshaft parts, and gearcase components
- Steering parts, control cables, trim parts, and transom components
- Engine oil, gear lube, service kits, spark plugs, seal kits, and routine maintenance parts
Common Outboard Problems and Where to Start
- Overheating: inspect the water pump, impeller, thermostat, cooling passages, and engine anodes.
- Hard starting or rough idle: check carburetor parts, fuel delivery, ignition components, spark plugs, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes, sensors, wiring, and related electrical components.
- Low compression or poor power: inspect pistons, rings, gaskets, cylinder condition, bearings, and internal engine components.
- Milky gear lube or gearcase noise: check lower unit seals, bearings, gears, driveshaft parts, and prop shaft components.
Frequently Asked Questions
What is the difference between OEM and aftermarket outboard parts?
OEM parts are made by the original engine manufacturer. Aftermarket parts are replacement parts made by other manufacturers to fit the same application. Pro Marine provides quality OEM specification aftermarket products designed for marine maintenance, repair, and rebuild work.
How do I find parts for my outboard engine?
Start by selecting your outboard brand, then choose the correct engine system category. Use your model number, serial number, horsepower, and year range to confirm fitment before ordering parts.
What information do I need before ordering outboard parts?
You should have the engine manufacturer, horsepower, model number, serial number, and any OEM part numbers from the original component when available. This helps avoid ordering parts that look similar but fit a different engine family.
Are aftermarket outboard parts reliable?
Yes, quality aftermarket outboard parts are commonly used by marine mechanics and rebuilders. Pro Marine offers OEM specification aftermarket products for many common outboard repair, maintenance, and rebuild applications.
What brands are included in the outboard category?
This category includes Chrysler Force, Honda, Johnson Evinrude E-tec, Mercury, Suzuki, Tohatsu Nissan, and Yamaha outboard parts.
Tip: Before ordering outboard parts, confirm your engine brand, horsepower, model number, serial number, and year range whenever possible.
Mercury Racing / Performance Outboard Steering
Mercury 848125 Spiral Lock Retaining Ring
The Mercury 848125 Spiral Lock Retaining Ring, also referenced as 53-848125, is a genuine OEM-style retaining ring used in select Mercury and Mariner high-performance outboard steering and swivel bracket assemblies.
This part is commonly found on performance and racing outboards, including select Pro Max, Super Mag, XS, Sport XS, Offshore, 300X, and 300XS applications. Exact fitment should always be verified by engine serial number and parts diagram before ordering.
Compatible Applications
| Brand | Engine Family | Application | System |
|---|---|---|---|
| Mercury / Mariner | 2.5L Performance | Pro Max, Super Mag, EFI, Offshore and related models | Swivel bracket / steering arm assembly |
| Mercury Racing | 200XS / 225X | Select DFI and performance models | Steering / swivel components |
| Mercury Racing | 250XS / 250 Sport XS | Select 3.0L DFI performance models | Steering / swivel components |
| Mercury Racing | 300 Pro Max / 300X / 300XS | Select 3.0L and 3.2L high-performance models | Steering / swivel components |
Important Fitment Note
Mercury 848125 is used on select high-performance and racing outboard applications. Because steering and swivel bracket parts can vary by model year, serial range, and bracket configuration, always confirm fitment using your engine serial number and OEM parts diagram before ordering.
OEM & Cross Reference Numbers
| Mercury OEM Part | 848125 |
|---|---|
| Mercury Reference | 53-848125 |
| Part Type | Spiral lock retaining ring |
| Common System | Swivel bracket / steering arm assembly |
What This Part Is Used For
A spiral lock retaining ring is used to hold components securely in place inside the steering or swivel bracket assembly. On high-performance Mercury outboards, small retaining parts like this are important for keeping steering and bracket components properly retained during operation.
This part is commonly replaced during steering arm, swivel bracket, clamp bracket, or heavy-duty steering service when the original retaining ring is removed, damaged, corroded, or no longer reusable.
Key Features and Benefits
- OEM-style spiral lock retaining ring for Mercury performance outboards.
- Commonly referenced as Mercury 848125 and 53-848125.
- Used in select steering arm and swivel bracket assemblies.
- Supports service on Pro Max, Super Mag, XS, Sport XS, Offshore, 300X, and 300XS style applications where specified by diagram.
- Small but important retaining component for bracket and steering service.
FAQ
What is Mercury 848125?
Mercury 848125, also shown as 53-848125, is a spiral lock retaining ring used in select Mercury outboard steering and swivel bracket assemblies.
What engines does this retaining ring fit?
It is used on select Mercury and Mariner high-performance outboards, commonly in 2.5L, 3.0L, and 3.2L performance families including Pro Max, Super Mag, XS, Sport XS, Offshore, 300X, and 300XS style applications.
Where is this part used?
It is commonly found in the swivel bracket and steering arm assembly, including short or heavy-duty bracket configurations where specified by the OEM parts diagram.
Should I verify fitment before ordering?
Yes. These assemblies can vary by serial number and bracket configuration, so confirm using your engine serial number and OEM diagram 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 spiral lock retaining ring, Mercury Racing retaining ring, Mercury swivel bracket retaining ring, Mercury steering arm retaining ring, Pro Max retaining ring, 300X retaining ring, 300XS retaining ring.
Searchable Part Numbers
848125, 53-848125
0335503
0769630
10-503
333658
335503
35790
769630
335524
0338518
0777535
18-7108
18-7108-9
313893
338518
777535
802076
81450
5007850
0778465
27710
322941
778465
0343853
0769652
18-0692
339601
343853
36500
769652
0317663
0321717
0321727
0342513
0777391
18-2864
321727
33640
342513
777391
802280
9-60413