Twin Disc MG 506 Marine Transmission Parts - Oil Pump Section

Twin Disc MG506 Marine Transmission Parts – Oil Pump Section

The Twin Disc MG506 oil pump system is essential for maintaining the lubrication and hydraulic integrity of this reliable marine transmission. The oil pump circulates transmission fluid under pressure, keeping internal gears, clutch plates, and bearings cool and properly lubricated during operation. Over time, heat, wear, and oil contamination can cause the pump’s internal components to deteriorate, resulting in pressure loss or reduced oil flow. Replacing the oil pump and gasket ensures the MG506 continues to deliver smooth power transfer, stable clutch engagement, and long service life in both commercial and recreational marine applications.

Twin Disc Oil Pump for Marine Gear MG506 – Old Style

The old-style oil pump for the MG506 marine gear is designed to deliver consistent oil pressure for early-generation units. Built with precision-machined steel gears, this pump maintains a steady flow of fluid to critical lubrication points even at low engine speeds. It ensures proper clutch actuation and prevents overheating caused by oil starvation.

Key Features:

• OEM-grade design ensures reliable oil delivery and system pressure
  
  

• Heavy-duty gear construction for durability under constant load
  
  

• Corrosion-resistant housing suited for saltwater marine environments
  
  

• Direct replacement for early MG506 transmission models
  
  

When to Replace the Oil Pump:

• Declining or inconsistent oil pressure readings
  
  

• Overheating or clutch slippage under load
  
  

• Metallic particles or debris in oil samples
  
  

• Prolonged use with discolored or contaminated oil
  
  

Replacing an aging oil pump restores proper fluid circulation and prevents costly damage to clutch packs and bearings.

Twin Disc Oil Pump Gasket for MG506 – Old Style

The oil pump gasket seals the interface between the oil pump and the transmission casing. Even minor leaks at this junction can cause pressure loss and reduced clutch performance.

Key Benefits:

• Designed for a tight, leak-free seal between mating surfaces
  
  

• Resistant to oil, pressure fluctuations, and vibration
  
  

• Prevents air ingress and fluid leakage that can reduce hydraulic efficiency
  
  

It is recommended to replace the gasket anytime the oil pump is removed or serviced to ensure maximum sealing integrity.

Twin Disc Oil Pump for Marine Gear MG506 – New Style

The new-style oil pump offers an updated design for later MG506 transmissions, incorporating refined internal clearances and improved flow characteristics. It is a direct-fit replacement that enhances lubrication efficiency while maintaining the same footprint as the original design.

Key Features:

• Improved oil flow for modern operating demands
  
  

• Machined for quiet, vibration-free operation
  
  

• Direct replacement—no modifications required
  
  

• Compatible with new-style MG506 units
  
  

When to Replace the Oil Pump:

• Low or fluctuating oil pressure readings
  
  

• Clutch delay or incomplete gear engagement
  
  

• Audible gear noise from the transmission under load
  
  

Installing the new-style pump restores full hydraulic control and extends the operational life of the transmission by maintaining consistent lubrication under heavy-duty marine conditions.

Twin Disc Oil Pump Gasket for MG506 – New Style

The oil pump gasket is designed for newer MG506 configurations and provides a secure seal between the oil pump and transmission body. Like the old-style version, it ensures proper pressure retention and prevents leaks.

Features:

• Oil- and heat-resistant composition for extended service life
  
  

• Designed specifically for MG506 new-style transmissions
  
  

• Simple installation and precise fit to maintain factory pressure ratings
  
  

Replacing this gasket during every pump service ensures the entire oil system remains sealed and free from pressure loss.

Dipstick for Twin Disc MG506 Marine Transmission

The dipstick (B3089) for the MG506 (new style) is a critical component for maintaining proper oil levels within the transmission. Regular oil level checks help prevent low-fluid conditions that can lead to clutch failure, bearing damage, or overheating.

Key Features:

• Precision-calibrated for accurate fluid level readings
  
  

• Corrosion-resistant construction suitable for marine use
  
  

• Designed for the MG506 new-style transmission housing
  
  

• Easy-to-read markings for quick inspection
  
  

When to Replace the Dipstick:

• Bent or damaged dipstick preventing accurate readings
  
  

• Loose fit within the filler neck
  
  

• Signs of corrosion or worn markings
  
  

Maintaining the correct oil level is crucial to the MG506’s reliability, especially during long voyages or extended operation under load.

Why Buy An Oil Pump For Your Twin Disc MG506 from Diesel Pro Power

• Exact MG506 Fitment: All components—old style and new style—are specifically engineered for the MG506 marine transmission.
  
  

• Marine-Grade Durability: Manufactured from corrosion-resistant materials designed for continuous exposure to oil, heat, and saltwater.
  
  

• Comprehensive System Coverage: From the pump and gasket to the dipstick, Diesel Pro Power offers everything you need for a complete lubrication system service.
  
  

• Trusted Worldwide: Over 40,000 marine customers rely on Diesel Pro Power for genuine Twin Disc replacement parts and professional support.
  
  

• Fast Global Shipping: All MG506 oil system components are in stock and ready for immediate shipment, minimizing downtime and keeping your vessel operational.