| company | role | hq | verified |
|---|
| Rife Heavy Duty Truck Parts rifeheavyduty.com | DIST | Winamac, IN (US) | 1 mfrs |
| Rincon Truck Center Inc rincontrucks.com | DIST | San Clemente, CA (US) | 1 mfrs |
| Roberts Truck Parts | DIST | — (US) | 1 mfrs |
| Roush Fenway Racing LLC roushfenway.com | DIST | Concord, NC (US) | 1 mfrs |
| Rpac Racing LLC pettyracing.com | DIST | Lexington, NC (US) | 1 mfrs |
| Santex Truck Center santextrucks.com | DIST | San Antonio, TX (US) | 1 mfrs |
| Se Setco Service Co LLC setcousa.com | DIST | Lawrenceville, GA (US) | 1 mfrs |
| Shiloh Services Inc shilohusa.com | DIST | Prospect, TN (US) | 1 mfrs |
| Shoup Manufacturing Co shoupparts.com | DIST | Kankakee, IL (US) | 1 mfrs |
| Shuster Enterprises Inc shustercorp.com | DIST | New Bedford, MA (US) | 1 mfrs |
| Singh Auto Parts | DIST | Simi Valley, CA (US) | 1 mfrs |
| Southeastern Truck And Trailer Parts LLC | DIST | Stringtown, OK (US) | 1 mfrs |
| Southside Truck Parts Inc | DIST | Alta Vista, IA (US) | 1 mfrs |
| Specialty Truck Parts specialtytruck.com | DIST | San Jose, CA (US) | 1 mfrs |
| Spectrac Parts & Service | DIST | — (US) | 1 mfrs |
| Spindles Plus Inc spindlesplus.com | DIST | Batavia, OH (US) | 1 mfrs |
| Sri Performance | DIST | Mooresville, NC (US) | 1 mfrs |
| Standard Locknut & Lockwasher stdlocknut.com | MFG DIST | Westfield, IN (US) | 1 mfrs |
| Sunbelt Bolt And Screw Co sunbeltboltandscrew.com | DIST | Jackson, MS (US) | 1 mfrs |
| Suncoast Rebuild Center suncoastrebuilding.com | DIST | Tampa, FL (US) | 1 mfrs |