S2K Commerce - Products Dropdown
Actions
S2K Commerce - Order Entry
Actions
Outboard Motor Parts | OEM & Aftermarket
Shop OEM and aftermarket outboard motor parts for Mercury, Yamaha, Suzuki, Honda, Johnson / Evinrude / E-TEC, Tohatsu / Nissan, and Chrysler / Force engines. Pro Marine USA carries parts for routine maintenance, troubleshooting, repair, and complete marine engine rebuilds.
Browse by outboard manufacturer or engine system, or use our OEM parts lookup to identify the correct part number before ordering. Find cooling, fuel, ignition, electrical, internal engine, lower unit, steering, trim, service kit, gasket, seal, and rebuild parts in one place.
Shop Outboard Parts by Manufacturer
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-TEC Outboard Johnson, Evinrude, E-TEC, and OMC replacement parts 
Mercury Outboard Mercury and Mariner maintenance, repair, and rebuild parts 
Suzuki Outboard Suzuki service, lower unit, fuel, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha maintenance, repair, lower unit, and rebuild parts Find the Correct Outboard Part
Not sure which part fits your engine? Start with the engine manufacturer, horsepower, model number, serial number, and year whenever available.
Our OEM parts lookup lets you view factory parts diagrams and identify the original part number for many popular outboard engines. Once you have the OEM number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Shop Outboard Parts by Engine System
Outboard engines use several interconnected systems. Select your manufacturer above to browse the exact categories available for your engine, including the following common repair and maintenance areas.
Common Outboard Problems and Where to Start
- Engine overheating: inspect the water pump, impeller, thermostat, pressure-control components, cooling passages, and engine anodes.
- Hard starting or rough idle: check fuel delivery, carburetor or injector operation, spark plugs, ignition components, filters, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes or ignition modules, sensors, wiring, grounds, and related electrical components.
- Low compression or poor power: inspect pistons, rings, cylinder condition, head and powerhead gaskets, bearings, and other internal engine components.
- Milky gear lube: inspect prop shaft, driveshaft, shift shaft, bearing carrier, and other lower unit seals for water intrusion.
- Lower unit or gearcase noise: inspect bearings, gears, clutch components, shafts, and gear lube condition before continued operation.
- Trim or steering problems: inspect hydraulic fluid level, seals, hoses, trim motors, pumps, steering cylinders, and mechanical connections.
Why Buy Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for major outboard engine brands.
- Marine engine parts for routine maintenance, professional repair, and complete rebuild projects.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of service kits, engine parts, lower unit components, fuel system parts, electrical parts, steering, and rigging products.
- Same-day weekday shipping available on qualifying in-stock orders placed before the shipping cutoff.
OEM and Aftermarket Outboard Parts
OEM parts are supplied by the original engine manufacturer and are designed for the specific engine application. Aftermarket parts are replacement components produced by independent marine parts manufacturers and may provide additional availability or value for many common repairs.
Pro Marine carries both genuine OEM parts and quality aftermarket replacement parts for many outboard maintenance, repair, and rebuild applications. Always confirm fitment using the engine model, serial number, horsepower, year range, or OEM part number when available.
Frequently Asked Questions
How do I find the correct parts for my outboard motor?
Start by identifying the engine manufacturer, horsepower, model number, serial number, and year. Select the manufacturer above to browse by engine system, or use the OEM parts lookup to locate the original part number from a factory diagram.
Can I search Pro Marine by OEM part number?
Yes. If you already have the OEM part number, enter it into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
What information should I have before ordering an outboard part?
Have the engine manufacturer, horsepower, model number, serial number, and year whenever possible. An OEM part number from the original component or parts diagram is especially helpful because visually similar parts may fit different engine families.
What is the difference between OEM and aftermarket outboard parts?
OEM parts come from the original engine manufacturer. Aftermarket parts are replacement components manufactured by other marine parts companies for compatible applications. Pro Marine carries both OEM and aftermarket options across many common outboard engine systems.
Are aftermarket outboard motor parts reliable?
Quality aftermarket marine parts are commonly used for maintenance, professional repair, and engine rebuilding. The best option depends on the application, manufacturer, availability, and customer preference.
Do you carry parts for older outboard motors?
Yes. Pro Marine carries parts for many older Mercury, Mariner, Johnson, Evinrude, Chrysler, Force, Yamaha, Honda, Suzuki, Nissan, and Tohatsu outboards. Availability varies by engine family and component.
What outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump impellers, complete water pump kits, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Outboard parts can vary by model, serial range, horsepower, and production year. Confirm the OEM part number or engine identification information whenever possible before ordering.
Engine Rebuild Kit 1120K OMC Johnson Evinrude 40-60 HP 2-Cylinder (.020 Over)
The Pro Marine 1120K Engine Rebuild Kit includes the major internal components required to rebuild Johnson and Evinrude 2-cylinder outboard engines in the 40-60 horsepower range.
This .020 over bore rebuild kit is designed for engines that have been machined oversize and use a 3.207" cylinder bore. The kit includes oversize pistons, rod bearings, crankshaft bearings, seals, and a complete powerhead gasket set required for a full engine rebuild.
Compatibility
This rebuild kit fits select Johnson and Evinrude 2-cylinder 2-stroke outboard engines in the 40-60 HP range.
| Brand | Application | HP / Engine | Fuel System | Notes |
|---|---|---|---|---|
| Johnson | Outboard | 40-60 HP | Carbureted | 2 Cylinder 2-Stroke .020 Over (3.207" Bore) |
| Evinrude | Outboard | 40-60 HP | Carbureted | 2 Cylinder 2-Stroke .020 Over (3.207" Bore) |
Application Chart
| Brand | Engine Type | Horsepower | Cylinders | Bore |
|---|---|---|---|---|
| Johnson | Outboard | 40 HP | 2 Cylinder | 3.207" |
| Johnson | Outboard | 50 HP | 2 Cylinder | 3.207" |
| Johnson | Outboard | 55 HP | 2 Cylinder | 3.207" |
| Johnson | Outboard | 60 HP | 2 Cylinder | 3.207" |
| Evinrude | Outboard | 40 HP | 2 Cylinder | 3.207" |
| Evinrude | Outboard | 50 HP | 2 Cylinder | 3.207" |
| Evinrude | Outboard | 55 HP | 2 Cylinder | 3.207" |
| Evinrude | Outboard | 60 HP | 2 Cylinder | 3.207" |
Engine Model Compatibility
This rebuild kit fits many Johnson and Evinrude 2-cylinder outboards using the .020 over (3.207") bore powerhead.
- J40ELCTS
- J40TLCTS
- J40ELCRD
- J40TLCRD
- J50ELCTS
- J50TLCTS
- J50ELCRD
- J50TLCRD
- E50ESL
- E50TEL
- J60ELCTS
- J60TLCTS
- J60ELCRD
- J60TLCRD
- E60ESL
- E60TLCOS
Johnson and Evinrude model numbers vary depending on shaft length, trim configuration, steering configuration, and production year. Always verify your engine model number before ordering parts.
What Is Included
- .020 Over pistons
- Piston ring sets
- Wrist pins
- Piston circlips
- Rod bearings
- Upper main crankshaft bearing
- Center main crankshaft bearing
- Lower main crankshaft bearing
- Complete powerhead gasket set
- Oil seals
- O-rings
- Intake gaskets
- Exhaust gaskets
- Cylinder head gaskets
Part Numbers & Cross References
| Reference Type | Part Number |
|---|---|
| Pro Marine Part | 1120K |
What This Kit Is Used For
The 1120K rebuild kit is used when rebuilding Johnson and Evinrude 2-stroke outboards that have been bored .020 over to repair cylinder wear or damage.
Replacing pistons, bearings, gaskets, and seals during a powerhead rebuild restores compression and reliability while extending engine life.
FAQ
What engines does this rebuild kit fit?
Johnson and Evinrude 40-60 HP 2-cylinder outboards bored .020 over.
What does .020 over mean?
It indicates the cylinders have been machined .020 inches larger than the standard bore to repair cylinder wear.
Does the kit include pistons and rings?
Yes. Oversize pistons, piston rings, wrist pins, and circlips are included.
Are crankshaft bearings included?
Yes. Upper, center, and lower crankshaft main bearings are included.
Dealer & Customer Support
Are you a marine repair shop, boat dealer, marina, or parts retailer? Pro Marine offers wholesale pricing and dealer discounts for qualified businesses in the marine industry.
Contact Pro Marine
Phone: 941-721-3000
Contact Us Online
Shipping Information
- Free shipping on orders over $100
- Continental United States
- Ships UPS, USPS, or FedEx
- Orders placed before 5:30 PM EST ship same day
- Typical delivery time is 1-5 business days
Return Policy
Pro Marine accepts returns within 30 days of purchase on new, unused parts in original packaging.
Searchable Part Numbers
Pro Marine Part: 1120K
Common Searches:
Johnson 40 rebuild kit .020 over
Johnson 50 rebuild kit .020 over
Johnson 60 rebuild kit .020 over
Evinrude 40 rebuild kit .020 over
Evinrude 50 rebuild kit .020 over
Evinrude 60 rebuild kit .020 over
OMC 2 cylinder rebuild kit .020 over
0584028
0777630
18-5770
583773
584028
777630
584847
0584236
0584766
0763762
583779
584236
584766
763762
445114
18-5826
584890