Twin Disc MG502 Marine Transmission Parts - Transmission Seal Section

Why Buy Seals for the Twin Disc MG502 Marine Transmission from Diesel Pro Power

Proper sealing is critical to maintaining the performance and longevity of your Twin Disc MG502 marine transmission. These precision components prevent oil leaks, sustain fluid pressure, and protect internal gears from contamination—ensuring that your marine propulsion system operates with peak efficiency. Diesel Pro Power is recognized worldwide as the most trusted online source for Twin Disc marine transmission parts, offering premium-quality seals specifically engineered for the MG502 model.

Front Seal for Twin Disc Marine Gear MG502

Rear Seal for Twin Disc Marine Gear MG502

Premium Aftermarket Quality and Reliability

Diesel Pro Power provides front and rear transmission seals that meet or exceed OEM performance standards. Each seal is manufactured using advanced elastomeric materials designed to withstand high-pressure operation, temperature variations, and exposure to marine conditions. The front seal (input shaft seal) prevents oil loss at the transmission’s drive end, while the rear seal (output shaft seal) ensures that lubricant remains contained within the housing even under heavy load or high RPM conditions.

Unlike generic seals that can wear prematurely, Diesel Pro’s premium aftermarket MG502 seals are precision-cut to exact Twin Disc specifications. This guarantees a perfect fit, reliable sealing integrity, and reduced vibration or shaft scoring—critical for maintaining the MG502’s excellent reputation for durability in both commercial and recreational vessels.

Exact Fit for the MG502 Transmission

Each seal available from Diesel Pro Power is engineered specifically for the Twin Disc MG502 marine gear. Whether you’re replacing a front input shaft seal or a rear output shaft seal), every component is verified for precise dimensional accuracy and material resilience. The result is a seal that installs seamlessly and performs reliably, reducing maintenance intervals and preventing costly downtime.

In-Stock Availability and Worldwide Shipping

Diesel Pro Power understands that transmission repairs often occur under time-sensitive conditions. That’s why all MG502 seals are kept in stock and ready to ship immediately. With a global distribution network covering more than 180 countries, Diesel Pro ensures that marine professionals—whether in commercial fleets, shipyards, or private vessels—receive their parts quickly and reliably, anywhere in the world.

Trusted by 40,000+ Marine Professionals

Over 40,000 satisfied customers trust Diesel Pro Power as their preferred source for marine diesel engine and transmission components. From Twin Disc to Detroit Diesel and Caterpillar, the company has built its reputation on fast order fulfillment, exceptional part accuracy, and customer-first service. When you purchase MG502 seals from Diesel Pro Power, you gain access to the same reliability trusted by professional mariners, commercial operators, and fleet managers worldwide.

Complete Twin Disc MG502 Parts Support

Beyond seals, Diesel Pro Power offers a complete catalog of MG502 transmission components, including bearings, gaskets, clutch plates, filter kits, and shift solenoids. By sourcing all your Twin Disc parts from a single, reputable supplier, you simplify maintenance logistics and ensure compatibility across every repair or rebuild project.

Choosing Diesel Pro Power for your Twin Disc MG502 seals means choosing confidence, reliability, and expert marine support—all backed by decades of industry experience.