Twin Disc MG5114 Marine Transmission Parts Catalog

Introduction: Premium Quality Parts for Peak Performance

The Twin Disc MG5114 marine transmission is known for its robust construction, smooth power transfer, and reliable performance across various marine applications. Whether you operate a commercial fishing boat, tugboat, offshore supply vessel, or recreational craft, the MG5114 delivers consistent, long-lasting power and control.

At Diesel Pro Power, we provide a comprehensive selection of MG5114 parts, including rebuilt transmissions, overhaul plate kits, gasket sets, plate kits, rubber blocks, and oil pump and filter assemblies. Our commitment to quality, combined with 24-hour worldwide shipping and expert support, ensures your MG5114 transmission stays in peak condition.

Our Selection of Twin Disc MG5114 Parts

Overhaul Plate Kit – For Twin Disc MG5114 Transmission

Includes all the necessary brass friction plates and steel plates for a complete clutch rebuild. This kit restores smooth clutch engagement and extends transmission life, ensuring your MG5114 continues to operate efficiently under demanding conditions.

Gasket Set – For Twin Disc MG5114 Transmission

A complete gasket set containing main housing gaskets, O-rings, seal rings, and auxiliary gaskets. Designed for high-pressure marine environments, this set ensures leak-free sealing and maintains system integrity during maintenance or overhaul.

Plate Kit – For Twin Disc MG5114 Transmission

A selection of individual brass and steel plates for targeted clutch system repairs. Perfect for addressing specific wear or damage, this kit provides a cost-effective solution for restoring clutch performance.

Rubber Blocks (Couplings) – For Twin Disc MG5114 Transmission

The rubber block, also known as a torsional isolator, connects the transmission output flange to the propeller shaft. It effectively absorbs vibrations, reduces stress on drivetrain components, and compensates for misalignments caused by hull flex or engine movement. Built from marine-grade materials for durability and quiet operation.

Oil Pump and Filter – For Twin Disc MG5114 Transmission

Ensures continuous lubrication and clean filtration of transmission fluid, reducing wear and extending the lifespan of internal components. Designed for high-demand marine operations.

Why Choose Diesel Pro Power for MG5114 Parts?

• 24-Hour Worldwide Shipping: Orders processed and shipped within 24 hours to minimize vessel downtime.

• Comprehensive Inventory: Extensive selection of MG5114 parts in stock and ready for immediate shipment.

• Expert Customer Support: Our team offers guidance on part selection, installation, and troubleshooting.

• Trusted by Over 15,000 Customers: Diesel Pro Power is the go-to source for marine transmission parts worldwide.

• Easy Online Shopping: Navigate our website with ease, find the parts you need, and place your order from the comfort of your home or office.

Frequently Asked Questions (FAQs) about the Twin Disc MG5114

1. What types of vessels use the MG5114 transmission?

The MG5114 is commonly used in fishing boats, offshore supply vessels, tugboats, workboats, and recreational vessels, delivering smooth and reliable power transfer.

2. What parts should I keep on hand for MG5114 maintenance?

Essential components include the rebuilt gear, overhaul plate kit, gasket set, plate kit, rubber blocks, and oil pump and filter.

3. What’s included in the overhaul plate kit?

A complete set of brass friction plates and steel plates, providing all you need for a full clutch rebuild and performance restoration.

4. How quickly can I receive MG5114 parts from Diesel Pro Power?

We offer 24-hour worldwide shipping, ensuring your parts are delivered quickly and reliably.

5. Are Diesel Pro Power’s aftermarket parts reliable?

Absolutely! Our parts meet or exceed OEM standards, offering exceptional quality and durability.

6. How do I select the correct parts for my MG5114?

Our website is designed to make part selection easy. You can also contact our expert support team for personalized assistance.

7. What signs indicate my MG5114 transmission needs maintenance?

Look for fluid leaks, unusual noises, slipping gears, overheating, or reduced performance, which may indicate the need for service.

8. Do you offer technical support?

Yes! Our knowledgeable team is ready to provide guidance on part selection, installation, and maintenance.

9. Can I shop for other Twin Disc transmission parts?

Absolutely! We offer a wide selection of Twin Disc parts for various models and applications.

10. How do I place an order?

Visit our website, browse the MG5114 parts catalog, select the parts you need, and place your order online. Contact us if you have any questions during the process.

Order Twin Disc MG5114 Parts Today

Choose Diesel Pro Power as your trusted supplier for Twin Disc MG5114 marine transmission parts. With fast shipping, competitive pricing, and expert support, we’re the top choice for marine operators around the world.

Browse our catalog today and place your order with confidence. For assistance, contact us at 888-433-4735 (US) or 305-545-5588 (International) during business hours (8 a.m. to 5 p.m. EST, Monday–Friday).

Marine Transmission Specifications & Applications of the Twin Disc MG5114

Overview of the Twin Disc MG5114 Marine Transmission

The Twin Disc MG5114 is a versatile and robust marine transmission designed for heavy-duty commercial service. Engineered to deliver efficient torque transfer and long-term reliability, the MG5114 is frequently found in patrol vessels, passenger ferries, utility boats, and mid-sized offshore workboats that demand continuous operation and minimal downtime.

With a strong cast-iron case, oil-cooled hydraulic clutch, and a selection of reduction ratios, the MG5114 is a well-balanced transmission that meets the needs of vessels operating in coastal, harbor, and near-offshore conditions. It is available in both straight and down-angle configurations, making it a flexible choice for new builds or repower projects.

Key Specifications of the Twin Disc MG5114

• Type: Heavy-duty marine transmission with hydraulic clutch

• Horsepower Rating (Approximate):

• Continuous Duty: Up to 450 HP @ 1800 RPM

• Intermittent Duty: Up to 575 HP @ 2300 RPM

• Maximum Input Speed: 2500 RPM

• Reduction Ratios Available:

• 1.51:1

• 1.93:1

• 2.48:1

• 2.96:1

• 3.52:1

• Input Housing: SAE No. 1 or SAE No. 2

• Flywheel Compatibility: 14", 11.5"

• Clutch Type: Hydraulically actuated, oil-cooled multi-disc

• Cooling System: Oil-to-water heat exchanger (standard)

• Lubrication System: Internal pressure-fed oil pump

• Oil Capacity: Approximately 10–12 quarts

• Dry Weight: Approximately 525–625 lbs (varies by configuration)

• Mounting Options: Straight or 8° down-angle output

• Rotation Compatibility: Bi-directional (left-hand or right-hand input)

• Optional Features:

• Mechanical or hydraulic PTO

• Trolling valve for low-speed maneuvering

• Flexible or rigid engine mounts

Common Marine Applications for the MG5114

The MG5114 is ideal for medium- to high-demand commercial marine operations where performance, reliability, and serviceability are essential. Its applications include:

• Passenger and Ferry Boats: Supports high-duty cycles with smooth, quiet shifting for passenger comfort.

• Crew Transfer Vessels: Trusted in oilfield and offshore industries where reliability is non-negotiable.

• Patrol and Enforcement Craft: Rapid clutch engagement and dependable gear shifting in tactical conditions.

• Fishing Vessels: Performs reliably in multi-hour runs and tough weather conditions.

• Research and Survey Boats: Ideal for continuous-duty operations with stable torque transfer.

Most Common Engine Models Paired with the Twin Disc MG5114

The MG5114 is well-matched with marine diesel engines in the 400–575 horsepower range, commonly found in commercial vessels that operate on demanding schedules. Its compatibility with SAE No. 1 and No. 2 housings supports a wide array of diesel engine brands:

Cummins Marine Engines

• Cummins QSM11

• Cummins ISC 8.3
  These Cummins models are often found in high-speed crew and patrol boats that require reliable mid-to-high HP performance paired with MG5114.

Caterpillar Marine Engines

• Caterpillar 3126 (high ratings)

• Caterpillar C9
  Popular in passenger and utility boats, these Caterpillar engines complement the MG5114’s torque capacity and cooling features.

John Deere Marine Engines

• John Deere 6090SFM85

• John Deere 6135SFM85
  Used in commercial workboats and patrol applications where fuel efficiency and torque balance matter.

Detroit Diesel Marine Engines

• Detroit Diesel 6V92

• Detroit Diesel 8V92 (light-to-mid ratings)
  Often found in refit vessels where the MG5114 replaces legacy transmissions due to its strong aftermarket support.

Advantages of the Twin Disc MG5114

• Reliable Operation in Demanding Conditions: Built to handle extended shifts and repeat load cycles with minimal wear.

• Bi-Directional Input Compatibility: Supports both left- and right-hand rotating engines for repower flexibility.

• Down-Angle and Straight Options: Choose the output configuration that fits your engine room and shaft alignment needs.

• Hydraulic Clutch System: Ensures smoother transitions and less vibration, especially under load.

• Serviceability and Aftermarket Coverage: Supported by Diesel Pro Power’s extensive inventory of parts and kits.

Ideal Use Cases for the MG5114