Dtorque 50hp Industrial Diesel Engine: Dual Crankshaft, 50 HP, ISO 9001-Certified

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Diesel Outboards

Dtorque 50hp

Power: 36.8 kW/50 hp at 3.500 - 4.000 min⁻¹
Max. Torque: 111 Nm at 2250 - 3000 min⁻¹
Engine Type: Turbo-charged parallel twin diesel engine
Balance: Dual counter-rotating crankshafts
Swept Volume: 804 ccm
Bore x Stroke: 80 x 80 mm
No. Cylinders: 2 In-Line, twin
Intake: Water cooled turbo charger and charge air cooling
Power Head Lubrication: Pressure lubrication
(engine oil volume 0.65 litres, 10W-40 ACEA specification E7-E4, API Specification CF-4; at ambient temperatures of > 0°C, SW-30 ACEA specification E7-E4, API Specification CF-4; at ambient temperatures of < 0°C)
Fuel: Diesel (Low Sulphur)
Injection: Bosch common rail direct injection
Battery: Minimum 75Ah
(Battery cables must have the right length vs diameter. Diesel need bigger diameter.)
Alternator: Standard 12 V/300 W
Cooling: Neander Active Thermo-Management System (ATMS)
Exhaust: Integrated underwater thru-hub propeller
Steering: Tiller / remote control, optional
Suspension: Silent block controlled compression and traction
Trim: Power trim
Shift: Mechanical - dog-clutch gearing
Transmission: Ratio 13/27 (2.07:1)
Available Shaft: Versions 20" (L) and 25" (XL)
Standard Propeller Type: 3-blade with built in damper
Weight: 175kg (dry)

Description

1. Dual Crankshaft Design
The patented dual crankshaft design eliminates the rolling moment and most of the inertia forces and thus strong vibrations typically found in conventional diesel engines.
2. Automatic Thermomangement
The Automatic Thermo-Management System manages engine temperatures and further reduces the risk of engine downtime due to overheating.
3 .Aluminium Cylinder Block
The cylinder block of the engine is an Aluminium design. A closed deck with pressed-in dry cast iron cylinder sleeves, this feature optimises servicability and protection.
4. Bosch Common Rail Fuel System
The Bosch Common Rail fuel system enables quick and direct injection of fuel into the engine cylinders. The system delivers greater power and efficiency whilst minimising generation of noise, vibration and smoke.
5. Optimised Oil Cooling
Our lower unit features a unique oil cooling system. Within the oil pan, we have included internal fins. This helps us optimise the oil cooling process.
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Technical Specifications

Item Specification
Power 36.8 kW/50 hp at 3.500 - 4.000 min⁻¹
Max. Torque 111 Nm at 2250 - 3000 min⁻¹
Engine Type Turbo-charged parallel twin diesel engine
Balance Dual counter-rotating crankshafts
Swept Volume 804 ccm
Bore x Stroke 80 x 80 mm
No. Cylinders 2 In-Line, twin
Intake Water cooled turbo charger and charge air cooling
Power Head Lubrication Pressure lubrication
(engine oil volume 0.65 litres, 10W-40 ACEA specification E7-E4, API Specification CF-4; at ambient temperatures of > 0°C, SW-30 ACEA specification E7-E4, API Specification CF-4; at ambient temperatures of < 0°C)
Fuel Diesel (Low Sulphur)
Injection Bosch common rail direct injection
Battery Minimum 75Ah
(Battery cables must have the right length vs diameter. Diesel need bigger diameter.)
Alternator Standard 12 V/300 W
Cooling Neander Active Thermo-Management System (ATMS)
Exhaust Integrated underwater thru-hub propeller
Steering Tiller / remote control, optional
Suspension Silent block controlled compression and traction
Trim Power trim
Shift Mechanical - dog-clutch gearing
Transmission Ratio 13/27 (2.07:1)
Available Shaft Versions 20" (L) and 25" (XL)
Standard Propeller Type 3-blade with built in damper
Weight 175kg (dry)


Technical Drawings

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Rigging Schematic

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Performance Comparison

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About Mercury Marine

Mercury Marine is a globally recognized marine propulsion brand headquartered in the United States, with a history spanning more than 80 years. As one of the most influential names in the marine industry, Mercury has built its reputation through continuous innovation, engineering excellence, and a strong commitment to product reliability.

From recreational boating to commercial and professional marine applications, Mercury designs and manufactures engines and related systems that are tested under demanding real-world conditions. Each product is developed to meet strict performance and durability standards, ensuring stable operation in diverse marine environments. Through long-term investment in research and development, Mercury continues to refine its technologies to improve efficiency, safety, and user experience.

Today, Mercury Marine products are widely used across global markets and supported by an extensive network of authorized distributors and service providers. This global presence ensures that customers receive consistent product quality, technical support, and after-sales service throughout the entire lifecycle of their equipment.

The Importance of Choosing Genuine Mercury Parts

Choosing genuine Mercury parts is essential for maintaining the performance, reliability, and safety of a marine propulsion system. Original parts are engineered in accordance with Mercury’s technical specifications, ensuring precise compatibility with the engine and related onboard systems.

In marine environments, even minor differences in component design or tolerance can lead to accelerated wear, reduced efficiency, or unpredictable system behavior. Genuine Mercury parts help minimize these risks by maintaining consistent quality standards and reliable performance characteristics. They are designed to integrate seamlessly with Mercury engines, supporting stable operation under a wide range of conditions.

In addition to performance benefits, using original parts supports long-term system protection. Properly matched components help reduce unnecessary stress on critical systems, simplify maintenance procedures, and contribute to extended service life. This approach provides users with greater confidence during daily operation while also helping preserve the overall value of their equipment.

Why Purchase from Us

As an authorized first-tier Mercury distributor in China, we provide customers with direct access to genuine Mercury products and reliable professional support. With 28 years of experience in the marine industry, we have developed extensive expertise in Mercury systems as well as a deep understanding of local market requirements.

Our long-standing partnership with Mercury allows us to ensure stable product supply, accurate technical information, and compliance with official brand standards. Over nearly three decades, we have served customers across recreational, commercial, and professional sectors, building strong relationships based on trust, consistency, and service quality.

By purchasing through us, customers benefit not only from authentic products, but also from professional consultation, dependable logistics, and long-term after-sales support. We are committed to providing a complete purchasing and ownership experience that aligns with Mercury’s global standards.

Mercury-Certified Technical Support and After-Sales Service

We are supported by a team of Mercury-certified technical engineers who have received official training and certification from Mercury Marine. All installation, maintenance, and after-sales services are provided strictly in accordance with Mercury’s official technical requirements and service guidelines.

Our technical team follows standardized service procedures to ensure accurate diagnostics, proper installation, and reliable maintenance support. This professional approach helps maintain system integrity, reduce operational risks, and ensure consistent performance throughout the service lifecycle.

By delivering after-sales service that aligns with Mercury’s global standards, we help customers maintain long-term confidence in their equipment. From technical consultation to ongoing maintenance support, our goal is to provide professional, transparent, and dependable service throughout the entire ownership experience.

FAQ

Q: What is the minimum order quantity (MOQ) and lead time for international orders?​

A: ​​MOQ:​​ Flexible, from single units to bulk orders. ​​Lead time:​​ In-stock parts ship within 24H (excluding holidays).

​Q: Are your Mercury Marine parts genuine?​

A: Yes. All parts are ​​100% authentic Mercury Marine components​​, with original packaging, anti-counterfeit labels, and traceable part numbers.

​Q: How can I confirm if a part is compatible with my engine?​

A: Provide the ​​engine’s serial/model number​​ from the nameplate. Our technical engineers will verify compatibility for you.

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