Carrier profile · USDOT 4029407 · MC-1521915 · Updated Jun 13, 2026

On Site Specialist Inc

DBA ON SITE DIESEL REPAIR

5 power unitsLAKEWOOD, WA50/100
NO OPERATING AUTHORITYMC-1521915 NO AUTHORITYUNDELIVERABLE ADDRESS

Identity & Federal

The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.

Undeliverable physical address on the FMCSA record

USPS flagged this carrier's filed physical address as undeliverable — a common chameleon / shell signal. Confirm a working address before tendering.

Location

Mailing address
PO BOX 506, SPANAWAY, WA, 98387-0506
Operation
Interstate

Contact

Web domain
on-sitedieselrepair.com

Registration

Officer
Sean Murphy
USDOT / docket
4029407 · MC-1521915
First registered
Feb 16, 2023
Last MCS-150
Feb 16, 2023
FMCSA safety rating
Not rated
D-U-N-S

Fleet (self-reported · MCS-150)

5Power units
5Drivers
2CDL drivers
Annual mileage

MCS-150 filing history· biennial-update cadence

Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.