[← Rail service providers in Missouri](https://rebulk.com/rail-service-providers/missouri)

# Unipar, LLC

Hazelwood, MO

[Component repair shop](https://rebulk.com/rail-service-providers/type/component-repair) [Rail parts supplier](https://rebulk.com/rail-service-providers/type/rail-parts)

## Certification

AAR M-1003

shop code UNPR · registry expiry 2029-03-03

A facility listed in the AAR registry is certified even if its printed expiration date has passed; renewals are sometimes delayed for reasons outside the facility's control. Source: [AAR M-1003 registry](https://aar.iirx.net/Registries/M1003), read 2026-09-20.

## Work performed

Locomotives

Diesel engine service

Company website

[https://uniparllc.com/](https://uniparllc.com/)

## Other facilities in Missouri

| Facility | City | Certification | Work performed |
| --- | --- | --- | --- |
| [Missouri Tie, LLC](https://rebulk.com/rail-service-providers/missouri/missouri-tie-llc) | Bunker | AAR M-1003 | — |
| [MKF Valve Services LLC](https://rebulk.com/rail-service-providers/missouri/mkf-valve-services-llc) Tank car service facility | Darlinton | AAR M-1002AAR M-1003 | Valve and fitting service |
| [Union Pacific Railroad](https://rebulk.com/rail-service-providers/missouri/union-pacific-railroad) DeSoto Railcar repair shop · Truck and bogie shop | DeSoto | AAR M-1003 | Bolster repair, Heavy rebuild, Railcar repair, Truck rebuild |
| [Wabtec Components LLC dba Aero Transportation Products](https://rebulk.com/rail-service-providers/missouri/wabtec-components-llc-dba-aero-transportation-products) Independence | Independence | AAR M-1003 | — |
| [New Frontier Materials](https://rebulk.com/rail-service-providers/missouri/new-frontier-materials) | Ironton | AAR M-1003 | — |
| [Trap Rock and Granite Quarries, LLC](https://rebulk.com/rail-service-providers/missouri/trap-rock-and-granite-quarries-llc) | Ironton | AAR M-1003 | — |
| [Greenbrier](https://rebulk.com/rail-service-providers/missouri/greenbrier) Jackson Rail parts supplier · Tank car service facility | Jackson | AAR M-1002AAR M-1003 | Valve and fitting service |
| [Jackson Machine and Manufacturing](https://rebulk.com/rail-service-providers/missouri/jackson-machine-and-manufacturing) | Jackson | AAR M-1003 | — |

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Source: https://rebulk.com/rail-service-providers/missouri/unipar-llc