Twin Disc MG514B Marine Transmission Parts – Oil Pump & Filter Section

The Twin Disc MG514B oil and filtration system is the core of the transmission’s reliability, maintaining steady hydraulic pressure, consistent oil circulation, and smooth clutch engagement in all marine operating conditions. Over time, components such as the oil pump, filters, gaskets, and breather can degrade from heat, vibration, and oil contamination. Replacing or servicing these parts restores proper hydraulic balance, prevents leaks, and keeps your MG514B transmission running at peak performance for years of dependable service.

Twin Disc Oil Pump for MG514B

The oil pump is the heart of the MG514B’s hydraulic system, supplying the oil flow and pressure necessary for clutch engagement and internal lubrication. Its precision-machined, gear-driven design ensures constant flow across varying RPM ranges, even under heavy loads.

Key Features:

Constructed from marine-grade, corrosion-resistant materials for long-term durability
Maintains steady pressure and flow in high-temperature, high-torque conditions
Precision-built for quiet, efficient performance
Direct-fit design made specifically for the MG514B transmission

When to Replace the Oil Pump:

Low or fluctuating oil pressure on the transmission gauge
Clutch slipping or delayed engagement
Metallic particles detected in the oil during service
Unusual whining or grinding noise coming from the pump area

Installing a new oil pump ensures consistent hydraulic operation, full lubrication coverage, and extended gear life, protecting the MG514B’s critical components.

Twin Disc Oil Pump Gasket for MG514B

The oil pump gasket forms a secure seal between the pump and the transmission housing. This gasket is essential for maintaining full internal pressure and preventing leaks that can lead to hydraulic loss or overheating.

Key Benefits:

Built from oil- and heat-resistant composite materials for superior sealing
Prevents air intrusion and pressure loss within the system
Ensures leak-free performance under continuous marine operation
Designed for a perfect fit with the MG514B transmission housing

Replacing the gasket any time the pump is serviced or removed helps maintain a sealed, efficient hydraulic system and prevents unnecessary oil loss.

Twin Disc Oil Filter for MG514B

The oil filter keeps the transmission fluid clean by trapping debris, clutch material, and metal particles before they can circulate through the clutch packs and bearings. Clean oil is vital to maintaining pressure stability and preventing excessive wear in marine applications.

Key Features:

Fine filtration mesh captures impurities without restricting oil flow
Heavy-duty housing resists corrosion in saltwater environments
Ensures steady hydraulic pressure and thermal balance
Easy access and replacement during routine maintenance

When to Replace the Oil Filter:

After every oil change or at regular service intervals
When oil appears dark, sludgy, or contaminated
When transmission pressure readings begin to fluctuate

Replacing the oil filter regularly helps preserve clutch pack integrity, prevent internal scoring, and ensure smooth power transfer through the MG514B transmission.

Twin Disc Oil Filter Gasket for MG514B

The oil filter gasket provides a tight seal between the oil filter base and the transmission housing, preventing leaks and maintaining hydraulic integrity.

Benefits:

Creates a secure, leak-free interface under high oil pressure
Oil- and temperature-resistant design for harsh marine environments
Simple installation with perfect alignment for MG514B housings

Replacing the filter gasket during each filter change ensures clean, leak-free operation and prevents hydraulic pressure loss caused by small seal failures.

Breather for Twin Disc MG514B Marine Transmission

The breather helps the MG514B manage internal air pressure changes as the oil heats and cools during operation. It allows the transmission housing to vent excess air pressure safely while filtering out moisture, dust, and salt particles.

Key Features:

Balances internal air pressure to prevent seal damage or leaks
Filters out airborne contaminants and moisture
Built from corrosion-resistant materials for long-lasting performance
Prevents pressure buildup that can force oil past seals or gaskets

Signs It’s Time to Replace the Breather:

Visible oil residue or wet spots around the breather port
Whistling or hissing sounds from the transmission housing
Repeated seal failures or abnormal pressure readings
Milky or foamy oil indicating moisture intrusion

Replacing a clogged or damaged breather ensures the MG514B remains sealed, balanced, and protected from both internal and external contaminants.

Importance of Oil System Maintenance in the MG514B

A properly functioning oil system is critical to the longevity and efficiency of the MG514B transmission. When the pump, filter, and gaskets begin to fail, the gearbox can experience pressure drops, overheating, or clutch wear. Routine inspection and timely replacement of these components guarantee smooth clutch engagement, stable hydraulic performance, and extended service life for the transmission.

Why Buy An Oil Pump For Your Twin Disc MG514B from Diesel Pro Power

Exact MG514B Fitment: Each component is engineered specifically for the MG514B transmission—no modifications required.
Marine-Grade Durability: Built to handle oil, heat, and saltwater exposure in demanding marine environments.
Comprehensive Overhaul Support: All vital oil system components—pump, filter, gasket, and breather—available in one place.
Trusted Worldwide: Diesel Pro Power serves over 40,000 marine customers globally with precision parts and professional support.
Fast Global Shipping: MG514B components are in stock and ready to ship immediately to minimize downtime and ensure reliable service.

Twin Disc Oil pump for MG514 A & B

Frequently added by mechanics