Machinery model 637E 1HB:
- SEBP1531 637E Wheel Scraper 1HB00001-00690 (MACHINE) POWERED BY 3306 Engine
- SEBP5252 C9 Engine Emissions Retrofit Repower Tier III For 637E Scraper 1HB00001-UP (MACHINE)
- SEBP6103 3306 Engine Emissions Upgrade Group Retrofit Tier I Equivalent Level for 637E Scraper & 637E Series II Scraper 1HB00001-UP (MACHINE)
- SEBP2526 637E Series II Wheel Tractor-Scraper (Coal) 1HB00691-UP (MACHINE) POWERED BY 3306 Engine