Carrier profile · USDOT 853580 · MC-309441 · Updated Jun 13, 2026
Dennis Diefenderfer Rodney Diefenderfer and Joseph Diefenderfer
DBA JESSE DIEFENDERFER & SONS
4 power unitsavg 14.4 yrRegional · 7 statesEAST FALLOWFIELD, PA94/100
CARRIER ACTIVEMC-309441 ACTIVE
Equipment
Haulable capacity (power units only — trailers are towed context), equipment mix, and the VIN-decoded unit roster. Click any VIN to trace that unit across every carrier that has run it.
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 4
- Observed power (24 mo)
- 4
- Trailers (towed)
- 5
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2025
Newest model yr
1997
Oldest model yr
44.4%
VINs decoded
Unit roster· VIN-decoded from inspections · NHTSA vPIC
| VIN | Type | Year | Make | Model | Insp. | Last seen |
|---|---|---|---|---|---|---|
| 1XKWDB9X12J894196View sourced platform decode | Truck-Tractor | 2002 | KENWORTH | W900 | 5 | Jun 24, 2026 |
| 1TDL42026CB053423View sourced platform decode | Trailer | 2012 | TIMPTE, IN | — | 2 | Jun 24, 2026 |
| 1GRAA0827KW161555View sourced platform decode | Trailer | 1989 | GREAT DANE TRAILER | Great Dane Trailers | 2 | Feb 24, 2026 |
| 1GRAA0827HW705142View sourced platform decode | Trailer | 2017 | GREAT DANE | — | 1 | May 30, 2026 |
| 1XP5DB9X6XD471755View sourced platform decode | Power unit | 1999 | PETERBILT | — | 1 | May 30, 2026 |
| 1XP5DB9X7VN433359View sourced platform decode | Truck-Tractor | 1997 | PETERBILT | 379 | 1 | Apr 3, 2026 |
| 1GR1A082XLW212984View sourced platform decode | Trailer | 1990 | GREAT DANE TRAILER | — | 1 | Apr 3, 2026 |
| 2XKWDB9X7SM679737View sourced platform decode | Power unit | 2025 | KENWORTH | — | 1 | May 20, 2025 |
| 1W1HEAVE8D33X2887View sourced platform decode | Trailer | 2013 | WSN | — | 1 | May 20, 2025 |
Showing 9 · most-inspected first.