| company | role | hq | verified |
|---|
| Sri Performance | DIST | Mooresville, NC (US) | 1 mfrs |
| Standard Locknut & Lockwasher stdlocknut.com | MFG DIST | Westfield, IN (US) | 1 mfrs |
| Stewart Haas Racing LLC haascnc.com | DIST | Kannapolis, NC (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 |
| Superior Spindle Service superiorspindle.com | DIST | Taylor, MI (US) | 1 mfrs |
| Thompson Motors Of Wykoff Inc thompsontrucks.com | DIST | Wykoff, MN (US) | 1 mfrs |
| Tnt Truck Parts tnttruck.com | DIST | Lancaster, TX (US) | 1 mfrs |
| Transaxle LLC transaxle.com | DIST | Pennsauken, NJ (US) | 1 mfrs |
| Trans-Gear Inc | DIST | Hubbard, OH (US) | 1 mfrs |
| Tri-Cities Truck Parts Inc | DIST | Muscle Shoals, AL (US) | 1 mfrs |
| Tri-Star Fleet Sales & Service Lp | DIST | San Angelo, TX (US) | 1 mfrs |
| Truck Gears Incorporated truckgearsinc.com | DIST | Los Alamitos, CA (US) | 1 mfrs |
| Truck Parts Company truckpartsco.com | DIST | Chicago, IL (US) | 1 mfrs |
| Truck Parts Plus Inc truckpartsplusinc.com | DIST | Mechanicsburg, PA (US) | 1 mfrs |
| Truck Pro palmbeachspring.com | DIST | West Palm Beach, FL (US) | 1 mfrs |
| Truckpro LLC truckpro.com | DIST | Memphis, TN (US) | 1 mfrs |
| Truckzone Corp | DIST | Medley, FL (US) | 1 mfrs |
| Truman Parts Co Inc | DIST | — (US) | 1 mfrs |
| Tull Bearings Inc | DIST | Minneapolis, MN (US) | 1 mfrs |