Twindisc mg5114sc

Palmer Johnson is North America’s leading distributor for all of your Twin Disc MG-5114SC (MG5114SC) marine gear transmission needs. Whether you are needing a replacement marine gear transmission, parts to do the repair yourself, or if you are wanting the factory trained technicians of PJ’s service department to rebuild your Twin Disc MG-5114SC transmission, we’ve got you covered. Contact us today and you’ll be back up and running in no time!

MG-5114 SC-HD

Standard Equipment

  • Cast iron housing
  • SAE J617 housing no. 1
  • Flexible coupling for 14” flywheel (SAE J620 size 355)
  • Mechanical control valve
  • Oil strainer


  • Electric control valve (12 VDC or 24 VDC)
  • Mechanical trolling valve
  • Oil filter mounted
  • Oil cooler with thermostatic bypass valve
  • Companion flange/bolts set
  • Monitoring devices to customer’s specification
  • Mounting brackets
  • Live PTO – max. 593 Nm
    SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt)
  • Hydraulic clutchable PTO – max. 641 Nm
    SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt)
  • Hydraulic clutchable PTO – max. 641 Nm
    Shaft with key

Contact Us

Please be as specific as possible by including how we can assist along with any relevant information such as spec number, BOM number, or serial number.

Maximum 716 kW (960 hp) @ 2500 RPM [Pleasure Craft]

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Authorized Distributor

Palmer Johnson is an authorized distributor and service provider for Twin Disc products.

Genuine Parts

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Service and Support

Seven master rebuild centers, nine full-service centers, and an extensive dealer network to serve you.