US · FMCSA ACTIVE AUTHORITY INSURED HAZMAT
G4 TANK LINES LLC
Denver, CO 80223 · DOT 4013855 · MC1512057
Company profile
Web-discovered · as of 2026-07-30
G4 Tank Lines LLC is a Denver-based, for-hire carrier specializing in the transportation of fuel, crude oil, feedstocks, and CNG. As the dedicated transportation arm of G4 Energy, they serve regional and national partners in the energy sector with a fleet of specialized tank trailers.
Fleet use
For-hire freight
Operating scope
Regional
Service model
dedicated
Equipment
tanker, specialized
Ownership
Private
part of G4 Energy, LLC
Employees
51-200
HQ · 610 South Lipan Street, Denver, CO 80223
Active FMCSA snapshot, 2024-2025 LinkedIn posts showing new tanker additions, and active website.
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
56
power units · corroborated
Activity
road freight carrier
for hire licence
In operation since
2023
55 drivers
US compliance
Source FMCSA L&I / SAFER · as of 2026-07-08
Operating authority
Active
Insurance on file
Yes (BIPD)
min cover $1,000k
Out of service
No
Safety rating
UNRATED
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