40HP 2-Stroke Outboard Motor - Hangkai Water-Cooled Tiller (40HP)

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Power your open-water adventures with the high-performance Hangkai 40HP 2-Stroke Outboard Motor. Engineered for demanding environments, this robust 703cc marine power plant delivers unparalleled reliability and outstanding thrust for inflatable fishing boats, rubber dinghies, fiberglass hulls, and utility vessels.

Key Structural & Performance Features

  • 703cc Twin-Cylinder Displacement: Delivers robust high-output torque to easily plane heavily laden recreational or commercial hulls.
  • Advanced Water-Cooling System: Protects vital engine components against thermal stress, ensuring consistent power output during continuous high-RPM operations.
  • Instant Electric Start: Equipped with a reliable starter system to get you underway quickly in all weathering conditions.
  • Marine-Grade Durability: Constructed with corrosion-resistant cast aluminum alloys and stainless steel drive shafts, complemented by active sacrificial zinc anodes to resist marine saltwater environments.

Technical specification sheet for the AirowMarine 40HP 2-stroke outboard motor, detailing its 703cc displacement, water-cooled system, and instant electric start.

Frequently Asked Questions

Is this 40HP outboard motor suitable for saltwater environments?
Yes, the Hangkai 40HP engine is engineered for marine durability, featuring sacrificial zinc anodes, a 316 stainless steel drive shaft, and a multi-layered anti-corrosion paint finish to withstand harsh saltwater conditions.
Does the motor come with an electric starter and battery cables?
Yes, this model features an Instant Electric Start system along with standard tiller pull-start override, and includes the necessary external connections for standard marine battery systems.
What type of boat is this outboard motor compatible with?
It is designed with a universal transom clamp assembly fitting a 508mm (20 inch) transom, making it highly compatible with inflatable fishing boats, aluminum hulls, fiberglass dinghies, and rib boats.

Engineering Specs

REV: 2025.Q4 // TECH-STANDARD
Material_Grade
A356 Marine Grade Cast Aluminum Alloy and 316 Stainless Steel hardware
Surface_Finish
High-gloss protective coating with precision-machined water inlets
UV_Resistance
Multi-layer polyurethane marine coating with UV-stabilized clear coat
Corrosion_Rating
Sacrificial zinc anodes, marine-grade stainless steel drive shaft, and passivated aluminum alloy housing
Compatibility
Inflatable Fishing Boats, Rigid Dinghies, Small Center Consoles, and Utility Boats
Hull_Integration
Fiberglass, Aluminum, Wood, and Inflatable Rubber
Standard_Ref
Universal Transom Clamp Mount (Fits standard 20-inch transom)

ESTABLISHED 2017

AirowMarine

Professional Marine Hardware for a Safer Voyage.

Design engineers and marine consultants reviewing technical blueprints and a stainless steel porthole window assembly in an office overlooking a container port.

Our Roots

Hong Kong Based, 8 Years of Expertise

The story of AirowMarine began eight years ago. Headquartered in Hong Kong, we have been dedicated to the global operation and brand building of marine accessories. These eight years of experience have taught us that on the unpredictable sea, every single component carries the trust and safety of the boat owner.

B2B marine hardware production: A massive mirror-polished 316 stainless steel boat anchor being hoisted for quality verification in AirowMarine’s industrial workshop in mainland China.

Supply Chain

Invested Factories in Mainland China

To ensure our products withstand extreme environments, we are more than just a bridge for trade. AirowMarine has invested in its own manufacturing facilities in Mainland China. Leveraging the region's mature and efficient industrial supply chain, we are deeply involved in the entire process—from raw material selection and precision machining to final assembly. We avoid exaggerated claims; instead, through professional logistics and rigorous quality control, we ensure every product delivered to you meets high nautical-grade standards.

Technical quality control inspection showing a Mitutoyo digital caliper measuring a polished marine fitting at 12.45mm precision.

Reliability

Strict QC & Global Logistics

As a provider of marine accessories, our business is intimately connected to the water. We believe that protecting the ocean is not just a slogan; it must be reflected in every detail of our business. Currently, AirowMarine is continuously optimizing our packaging solutions: we maximize the reduction of single-use plastics in our packaging and shipping processes, using recyclable paper-based cushioning materials whenever possible. Our products are built to power your voyage, while our packaging is designed to protect the purity of the blue sea.

Close-up of a 316 stainless steel circular louvered deck vent in eco-friendly honeycomb paper packaging with AirowMarine shipping label.

Our Mission

Protecting the Blue, Plastic-Free

We are aware that there is always room for improvement, but we have never stopped in our pursuit of excellence and environmental responsibility. AirowMarine is committed to providing you with durable, reliable, and eco-conscious marine accessories.

Expert Guidance

Technical help in 24 hours

International Delivery

Secure & Tracked Shipping

Custom Solutions

Tailored parts for your boat

Factory Direct

Invested supply, best value

Proven Quality

Tested for nautical safety