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Tohatsu & Nissan Outboard Parts
Shop OEM and aftermarket Tohatsu and Nissan outboard parts for maintenance, repair, troubleshooting, and complete engine service projects. Browse marine parts by system, including cooling, fuel delivery, electrical, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Tohatsu and Nissan outboard engine parts for a wide range of 2-stroke, Four Stroke, EFI, and TLDI applications. Use your engine horsepower, model number, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Tohatsu & Nissan Outboard Parts by System
- Control Cables & Boxes
- Cooling System
- Electrical System
- Engine Oil
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service Manuals
- Steering Systems
- Transom & Midsection
- Trim System
Find the Correct Tohatsu or Nissan Outboard Part
Tohatsu and Nissan outboard parts can vary by horsepower, model number, engine family, and production range. If you are unsure which component fits your engine, use the OEM parts lookup to identify the original part number from a factory parts diagram.
Once you have the OEM part number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Tohatsu & Nissan Outboard Engine Families
Pro Marine supports many Tohatsu and Nissan outboards across a wide horsepower range. Always confirm the exact engine model and serial information before ordering parts.
- Portable and Small Outboards: common 2.5HP through 30HP 2-stroke and Four Stroke applications
- Midrange: 35HP through 70HP applications across multiple engine families
- Three-Cylinder Platforms: common 75HP through 90HP applications
- High-Horsepower: 115HP through 140HP applications
- EFI: electronically fuel-injected Tohatsu platforms
- TLDI: Tohatsu direct-injection 2-stroke engine families
Common Tohatsu & Nissan Repair Areas
- Engine overheating: inspect the water pump, impeller, thermostat, cooling passages, pressure-control components, and engine anodes.
- Hard starting or rough running: inspect fuel pumps, carburetors or injectors, filters, spark plugs, ignition components, and intake sealing.
- No spark or electrical problems: inspect ignition coils, stators, CDI components, rectifiers, sensors, wiring, and grounds.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and other internal engine components.
- Lower unit noise or water intrusion: inspect prop shaft seals, driveshaft seals, shift shaft seals, bearings, gears, and gear lube condition.
- Trim or steering problems: inspect trim motors, hydraulic components, steering systems, hoses, seals, and related rigging parts.
Why Buy Tohatsu & Nissan Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for many Tohatsu and Nissan outboard applications.
- Parts for routine maintenance, professional repair, lower units, fuel systems, electrical systems, steering, trim, and internal engine work.
- 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 cooling, fuel, electrical, lower unit, and service components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Tohatsu or Nissan outboard part?
Start with the engine horsepower, model number, serial number, and production information whenever available. Use the OEM parts lookup to identify the original part number from a factory diagram.
Can I search Tohatsu and Nissan parts by OEM part number?
Yes. Enter the OEM part number 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.
Do Tohatsu and Nissan outboard parts interchange?
Some Tohatsu and Nissan outboard applications share related engine platforms and components, but fitment should never be assumed. Confirm the model, production range, and OEM part number before ordering.
Do you carry parts for Tohatsu TLDI engines?
Yes. Pro Marine carries parts for many Tohatsu TLDI applications, including cooling, fuel, electrical, internal engine, lower unit, steering, and trim components.
Do you carry parts for older Nissan outboards?
Yes. Pro Marine carries replacement parts for many older Nissan outboard applications. Availability varies by engine family and component.
What Tohatsu and Nissan parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters where applicable, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and model-specific service components.
Fitment Tip: Tohatsu and Nissan outboard parts can vary by model, horsepower, engine family, and production range. Confirm the OEM part number or complete engine identification information whenever possible before ordering.
3B2702501M
345702500
345702500M
345702501
345702501M
09263-20034
3C7000420
3C7000420M
353000420
353000420M
18-6420
3AA760100
3AA760100M
3421
5040343
6L2-81800-10-00
6L2-81800-11-00
6L2-81800-20-00
682-81800-11-00
682-81800-12-00
8M0223446
8M6007363
803835T02
OEM Mercury & Tohatsu Thermostat Gasket
Mercury & Tohatsu 4HP-30HP FourStroke Thermostat Cover Gasket
Genuine OEM thermostat cover gasket used on many Mercury and Tohatsu 4-stroke outboards ranging from 4HP through 30HP. This gasket helps create a proper seal between the thermostat housing and engine components during cooling system service.
Commonly replaced during thermostat maintenance, cooling system repairs, or preventative service on compatible Mercury, Mariner, Nissan, and Tohatsu outboards.
Compatible Mercury Applications
| Engine Range | Engine Type | Application Notes |
|---|---|---|
| 4HP / 5HP / 6HP | Mercury FourStroke | Select models and serial ranges |
| 8HP / 9.9HP | Mercury FourStroke | 209cc applications |
| 9.9HP ProKicker | Mercury FourStroke | Select ProKicker applications |
| 15HP / 20HP | Mercury Carbureted & EFI FourStroke | 2-cylinder applications |
| 25HP / 30HP | Mercury EFI FourStroke | 3-cylinder applications including Jet models |
| 15HP SeaPro | Mercury FourStroke | International SeaPro models |
Compatible Tohatsu Applications
| Engine Range | Engine Type | Application Notes |
|---|---|---|
| 8HP / 9.8HP | Tohatsu FourStroke | Select MFS models |
| 15HP / 20HP | Tohatsu FourStroke | Select EFI and carbureted models |
| 25HP / 30HP | Tohatsu FourStroke | Select EFI applications |
| Nissan Marine | FourStroke Outboards | Select rebadged Tohatsu applications |
OEM Part Numbers & Cross References
| Brand | Part Numbers |
|---|---|
| Mercury | 8M0214960, 853702, 853702005, 898101194 |
| Tohatsu | 3H6010320, 3H6010320M, 346010320, 346010320M, 350020320, 350020320M |
| Sierra | 18-60920 |
| Mallory | 9-60920 |
What This Thermostat Gasket is Used For
This OEM thermostat cover gasket is used to properly seal the thermostat housing during cooling system operation on compatible Mercury and Tohatsu outboards.
Replacing the gasket during thermostat service helps prevent coolant leaks, improper thermostat sealing, and cooling system pressure loss.
Thermostat gaskets are commonly replaced whenever the thermostat housing is removed for inspection, thermostat replacement, or routine maintenance.
Using the correct OEM gasket helps maintain proper fitment and sealing performance in harsh freshwater and saltwater marine environments.
Key Features and Benefits
- Genuine OEM Mercury and Tohatsu thermostat gasket
- Fits many 4HP-30HP FourStroke outboards
- Helps seal thermostat housing properly
- Supports cooling system reliability
- Common replacement during thermostat service
- Designed for marine cooling system environments
- OEM-quality fit and material construction
- Compatible with multiple Mercury and Tohatsu platforms
Thermostat Gasket Details
- Part Type: Thermostat Cover Gasket
- Primary OEM Number: 8M0214960
- Application: Mercury & Tohatsu FourStroke Outboards
- Horsepower Range: 4HP-30HP
- System: Engine Cooling System
- Use: Thermostat housing sealing
- Material: OEM marine gasket material
FAQ
What does this thermostat gasket fit?
This gasket fits many Mercury and Tohatsu-built 4-stroke outboards
ranging from 4HP through 30HP depending on model and serial range.
Should I replace the gasket when replacing the thermostat?
Yes. It is recommended to replace the thermostat gasket whenever the thermostat housing is removed to help ensure a proper seal.
Is this an OEM Mercury part?
Yes. This is a genuine OEM-style thermostat gasket cross-referenced to Mercury part number 8M0214960 and related superseded numbers.
Does this fit Tohatsu and Nissan outboards?
Yes. Many Mercury small FourStroke outboards are manufactured by Tohatsu, and this gasket also cross references to several Tohatsu and Nissan Marine part numbers.
Can a damaged thermostat gasket cause cooling issues?
Yes. A leaking or damaged gasket can contribute to improper thermostat operation, coolant leakage, or inconsistent engine temperatures.
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 Terms
8M0214960, 853702, 853702005, 898101194, 3H6010320, 3H6010320M, 346010320, 346010320M, 350020320, 350020320M, thermostat gasket, Mercury thermostat gasket, Tohatsu thermostat gasket, Mercury 25HP thermostat gasket, Mercury 30HP thermostat gasket, Tohatsu thermostat cover gasket, Nissan Marine thermostat gasket, Sierra 18-60920
3H6010320
3H6010320M
346010320
346010320M
350020320
350020320M
5040066
8M0214960
853702
853702005
898101194
16911-ZY3-000
16911-ZY3-000
16911-ZY3-010
18-79908
18-79908
16058T
18-5143
369-06021-0
369060210
369060210M
HZY623172000
23172-ZY6-000
16064T05
160642
160643
160645
18-5133
184-0643
189-3081
189-3381
3A0-06040-1
3A0060400
3A0060400M
3A0060401
3A0060401M
3A0060480
3A0060480M
3A0060481
3A0060481M
3A0060500
3A0060500M
3A0060501
3A0060501
3A0060530
3A0060530M
8M0047311
184-3706
189-3381
3G2-06040-2
3G206040M
3G2060400M
3G2060401
3G2060401M
3G2060402
3G2060402M
3G2060530
3G2060530M
3M060480
3M3-06048-2
3M3060480M
3M3060481
3M3060481M
3M3060482M
362060500
362060500M
362060501
362060501M
6G2060400
8M0047313
8M0121784
803706A1
803706A3
Starter Motor 9 Tooth 3453A
The 3453A Starter Motor 9 Tooth PRO is a high-quality replacement starter designed for Honda and Tohatsu four-stroke outboards. This unit delivers reliable cranking performance and replaces multiple OEM starter motor part numbers used across the 75HP–150HP platform.
Fitment Overview
This starter is used on Honda BF-series outboards and their Tohatsu equivalents. Cross reference numbers including 31200-ZY6-003, 31200-ZY9-003, and 31200-ZY9-H01 confirm fitment across the full Honda 4-cylinder 75HP–150HP engine family.
Compatibility
| Brand | Model | Year Range |
|---|---|---|
| Honda | BF75 | 2004-Present |
| Honda | BF90 | 2004-Present |
| Honda | BF115 | 2004-Present |
| Honda | BF135 | 2004-Present |
| Honda | BF150 | 2004-Present |
| Tohatsu | BFT75A | 2014-Present |
| Tohatsu | BFT90A | 2014-Present |
| Tohatsu | BFT115A | 2014-Present |
| Tohatsu | BFT135A | 2014-Present |
| Tohatsu | BFT150A | 2014-Present |
Fits These Serial Ranges
This starter is used across the Honda 75HP–150HP four-cylinder platform and does not have a single clean serial break. Fitment is best confirmed by matching one of the OEM part numbers listed below to your engine diagram.
Important: Always verify your original starter number or engine serial number before ordering to ensure correct fitment.
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Pro Marine | 3453A |
| Honda OEM | 31200-ZY6-003 |
| Honda OEM | 31200-ZY9-003 |
| Honda OEM | 31200-ZY9-H01 |
| Honda Alt | HZY631200003 |
| Honda Alt | HZY931200H01 |
| Sierra | 18-6959 |
| Mercury | 8M6007337 |
| Mercury | 8M6010750 |
What This Part Is Used For
This starter motor is responsible for turning the engine over during startup. It engages the flywheel using a 9-tooth gear and provides the torque needed to crank larger four-stroke outboards reliably.
- 9-tooth starter drive for proper engagement
- Designed for Honda 75–150HP four-stroke engines
- Also fits Tohatsu rebadged Honda platforms
- Direct replacement for multiple OEM starter numbers
If your engine is slow to crank, clicks without starting, or has intermittent starting issues, replacing the starter motor can restore proper operation.
FAQ
What engines does this starter fit?
It fits Honda BF75, BF90, BF115, BF135, and BF150 models, as well as Tohatsu BFT75A, BFT90A, BFT115A, BFT135A, and BFT150A.
What OEM numbers does this replace?
It replaces 31200-ZY6-003, 31200-ZY9-003, 31200-ZY9-H01 and related cross references.
Is this a 9-tooth starter?
Yes, this is a 9-tooth starter motor designed for these engine platforms.
How do I confirm fitment?
Match your original starter number or check your engine diagram against the OEM numbers listed above.
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
3453A, 31200-ZY6-003, 31200-ZY9-003, 31200-ZY9-H01, HZY631200003, HZY931200H01, 18-6959, 8M6007337, 8M6010750
HZY631200003
HZY931200H01
18-6959
31200-ZY6-003
31200-ZY9-H01
31200-ZY9-003
8M6007337
8M6010750
8-90HP
Tohatsu
60hp 2014-2019
75hp 2014-2019
90hp 2014-2019
HZV416910015
16910-ZV4-015
9-37957