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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.
25cc Hydraulic Steering Helm Pump
Pro Marine 350-HELM-025 Hydraulic Helm Pump
The Pro Marine 350-HELM-025 Hydraulic Helm Pump is a 25cc hydraulic steering helm designed for smooth, controlled steering response on modern outboard boats.
This helm is compatible with many standard hydraulic steering systems, including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
What a Hydraulic Helm Pump Does
The helm pump is the core component of a hydraulic steering system. When the steering wheel is turned, the helm creates hydraulic pressure that moves fluid through the hoses and steering cylinder to turn the engine.
A properly matched helm pump helps provide predictable steering feel, reduced steering effort, and smooth handling at both low and high speeds.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| Single Outboards up to 350HP | Hydraulic steering helm applications |
| Bass Boats | Performance steering and responsive handling |
| Bay Boats | Smooth low-speed and cruising control |
| Center Consoles | Reliable offshore and coastal steering feel |
| Repower Projects | Excellent upgrade from traditional cable steering |
Complete or Service Your Steering System
Complete Steering Kit
Need the full steering package? The 350-HSTEER kit includes the helm, cylinder, fluid, and fill hose assembly.
View 350-HSTEER Complete KitSteering Cylinder
This helm works with many standard hydraulic steering cylinders, including Pro Marine, SeaStar®, and Uflex® compatible systems.
View 350-HSTEER-CYL CylinderHydraulic Hoses
Select the proper hydraulic hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesFluid & Fill Accessories
Hydraulic fluid and fill hose assemblies help simplify installation and steering system bleeding.
View PRO-OIL15 Hydraulic FluidView 102P Fill Hose Assembly
Key Features and Benefits
- 25cc hydraulic helm pump design
- Compatible with many standard hydraulic steering systems
- Works with Pro Marine, SeaStar®, and Uflex® style setups
- Smooth steering response and controlled handling
- Designed for high-horsepower single outboards
- Helps reduce steering effort compared to cable steering
- Good option for bass boats, bay boats, and offshore applications
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Hydraulic helm pump
- Helm Size: 25cc
- Connection Type: Hydraulic steering hose circuit
- Typical Use: Single outboard hydraulic steering systems
- Compatible Systems: Pro Marine, SeaStar®, Uflex®, and similar front-mount hydraulic steering systems
- Related Components: Steering cylinder, hydraulic hoses, steering fluid, fittings, and fill/bleed kit
FAQ
What does a hydraulic helm pump do?
The helm pump converts steering wheel movement into hydraulic pressure that moves the steering cylinder.
What size is this helm?
This is a 25cc hydraulic helm pump.
What steering systems is this helm compatible with?
It is compatible with many standard hydraulic steering systems including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
Is this the complete steering system?
No. This listing is for the helm pump only.
Can I buy the complete steering kit instead?
Yes. The complete 350-HSTEER kit includes the helm pump, steering cylinder, fluid, and fill hose assembly.
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
350-HELM-025, hydraulic helm pump, 25cc helm, SeaStar compatible helm, Uflex compatible helm, Pro Marine helm pump, hydraulic steering helm, outboard steering helm, front mount hydraulic steering