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Top Quality is Top Priority

Harper Detroit Diesel - Allison maintains a substantial inventory of genuine parts for current Detroit Diesel engines and Allison transmissions and those no longer in production. The Company's aftermarket sales are heavily supported by an on-line, real-time parts distribution network that provides computerized access to critical engine parts information 24 hours a day, seven days a week.

Central to Detroit Diesel's North American parts strategy is the Parts Distribution Center (PDC) in Canton, Ohio. Distributors, like Harper Detroit Diesel - Allison, can access the Centers' computer hot line for rapid parts delivery. The PDC has consistently demonstrated excellent product availability and superior customer service at all times.


In our Parts Department you will find accessories, exchange components, and new parts. Below you will find a sampling of the genuine OEM parts that Harper Detroit Diesel - Allison has to offer:

  • DDC Power Trac®, which provides fuel analysis, coolant liquid analysis and lubricating oil analysis
  • Exide DDC Power Guard® Industrial batteries and regulator
  • DDC Approved Bendix/Midland Air Compressors (New & Exchange)
  • DDC Performance Adhesive and Sealant Products
  • DDC Powerguard Oil
  • DDC Gauge Instrumentation
  • DDC & KBI Ether Start Systems
  • Allison Transynd Synthetic Transmission Fluid
  • Allison AT 540 to MT 653
  • Allison World Transmission Swing Units (For quick repair turnaround)
  • Allison Genuine Oil Filters
  • Delco Starters and Alternators
  • Duralite Charge Air Coolers
  • Power Cool® Need Release® Cooling System Treatment
  • Power Guard® and Fuel Pro® Genuine Air Filters
  • Power Guard® Genuine Oil & Fuel Filters
  • Pro Check Air Eliminated for Fuel Systems
  • ProDriver®, ProManager®, Optimized Idle™ Software Fleet Management System
  • Puraguard™, Donaldson, Fram and Farr Industrial Air Cleaners
  • reliabilt® Remanufactured Products from Air Compressors to Water Pumps
  • Temro and Kim Hot Start Engine Heaters
  • Cowl, Donaldson Muffler & Silencer
  • Horton Thermostatic Fan
  • Jake Brake® Engine Brakes and Service Tools
  • Kent-Moore Tools
  • Morse Controls Industrial Control Cables
  • Murphy, Stewart Warner, and Kysor Switches & Gauges
  • OTC Specialized Tools
  • Wood Ward Electronic Governors
  • RigMaster Power Truck Mounted Generator Sets
  • Tachometer Cables and Sensors
  • In Frame and Overhaul Parts Kit
  • Webasto Air Top 2000 12V D Sleeper Kit
  • Webasto Air Top 2000 24V D Heater Kit
  • Webasto Air Top 3500 12V D Interior Cargo Kit
  • Webasto Air Top 3500 12V D Sleeper Kit
  • Webasto Air Top 5000 12V D Interior Cargo Kit
  • Webasto Air Top 2000/TSL17 Tandem717P 12V D Kit
  • Webasto Air Top 3500 12V D CVI Kit
  • Webasto DBW2010.73 12V D EB Kit
  • Webasto DBW2010.74 24V D EB Kit
  • Webasto Thermo50.04 24V D Basic Heater
  • Webasto Thermo90S 12V D EB Kit
  • Webasto Thermo90S 24V D EB Kit
  • Webasto TSL 17 Thermo Top C 12V D BK

    *Other Models are available upon request
    **We also carry parts & accessories

  • For more information or to order parts, please contact your local Harper Detroit Diesel - Allison Parts Department.

    Don't forget to check out our Specials!