Machinery model 637D 26W:
- SEBP1058 637D TRACTORS 26W00001-UP (MACHINE) POWERED BY 3408 ENGINE
- SEBP4809 C15 Engine Emissions Retrofit Repower Tier III For 631D, 633D, 637D Wheel Tractor Scraper 26W00001-UP (MACHINE)
- SEBP4811 3408E Engine Emissions Retrofit Repower Tier II For 631D,633D,637D, And 639D Wheel Tractor 26W00001-UP (MACHINE)
- SEBP5316 3408E Engine Emissions Repower Tier I For 631D,633D,637D, And 639D Wheel Tractor 26W00001-UP (MACHINE)