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Nissan UD engine

From Wikipedia, the free encyclopedia

The Nissan UD series of diesel engines were produced by Nissan in a range of configurations from 3 cylinder to 12 cylinder. The engines were mainly used in heavy applications, such as buses and trucks produced from 1971 through 1983.[1]


All engines retain the same bore and stroke ratio - 110 mm x 130 mm.

UD-3 - 3706 cc - straight-3 diesel engine


  • Nissan Bus U690/UG680/UR690/NUR690
  • Nissan Truck U680/DUG680/TU680/U681

UD-4 - 4942 cc - straight-4 diesel engine


  • Nissan Bus R80/RX102/4R82/4RA82/4RA104
  • Nissan Truck T80/T80S/T80SD/TC8

UD-5 - 6177 cc - straight-5 diesel engine


  • Nissan Bus 5R104/5RA104
  • Nissan Truck 5TWDC10

UD-6 - 7413 cc - straight-6 diesel engine


  • Nissan Bus 6R110/6RA110
  • Nissan Truck 6TW1Z/6TW1ZS/6TW12SD

UD-V8 - 9883 cc - V8 diesel engine


  • Nissan Bus U8RA110

UD-V12 - 14825 cc - V12 diesel engine


  • Nissan Dump Truck WD38

Marine applications

Nowadays, these engines find applications in boats as an alternative to Cummins diesels.[2]


  1. ^ Kortai Piston Ring Set Catalog
  2. ^ Forums Discussion
This page was last edited on 12 December 2019, at 14:52
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