Description
The Meritor 5X1201 is a genuine OEM O ring for heavy-duty truck transmissions, sourced directly through the Meritor parts network. O rings in transmission assemblies maintain fluid seals at critical joints and ports, preventing leaks that can lead to fluid loss and component wear. This part carries Meritor OEM status, meaning it meets the original design specifications for the applications it was engineered to serve. Pro Gear and Transmission stocks genuine Meritor drivetrain components, including hard-to-find seals and small parts. Call us to confirm this is the correct O ring for your specific transmission build.
Non returnable item
Features
Genuine Meritor OEM transmission O ring
Part number 5X1201
Designed for heavy-duty truck transmission assemblies
Maintains fluid seals at transmission joints and ports
Sold by Pro Gear and Transmission
Used in 59 Meritor Transmission models
| Rockwell Meritor G Platform 10-Speed M-15G10A-S15 | Rockwell Meritor G Platform 10-Speed M-15G10AE15 | Rockwell Meritor G Platform 10-Speed M-15G10AM15 | Rockwell Meritor G Platform 10-Speed MO-16G10A-M16 |
| Rockwell Meritor G Platform 10-Speed MO-16G10AD16 | Rockwell Meritor G Platform 10-Speed MO-16G10AE16 | Rockwell Meritor G Platform 10-Speed MO-16G10AS16 | Rockwell Meritor G Platform 10-Speed MO-16G10C-D18 |
| Rockwell Meritor G Platform 10-Speed MO-16G10C-E18 | Rockwell Meritor G Platform 10-Speed MO-16G10C-M18 | Rockwell Meritor G Platform 10-Speed MO-16G10C-S18 | Rockwell Meritor G Platform 9-Speed M-15G9A-D15 |
| Rockwell Meritor G Platform 9-Speed M-15G9A-E15 | Rockwell Meritor G Platform 9-Speed M-15G9A-M15 | Rockwell Meritor G Platform 9-Speed M-15G9A-S15 | Rockwell Meritor G Platform 9-Speed MO-14G9A-D14 |
| Rockwell Meritor G Platform 9-Speed MO-14G9A-E14 | Rockwell Meritor G Platform 9-Speed MO-14G9A-M14 | Rockwell Meritor G Platform 9-Speed MO-14G9A-S14 | Rockwell Meritor G Platform 9-Speed MO-15G9B-D15 |
| Rockwell Meritor G Platform 9-Speed MO-15G9B-E15 | Rockwell Meritor G Platform 9-Speed MO-15G9B-M15 | Rockwell Meritor G Platform 9-Speed MO-15G9B-S15 | Rockwell ZF 10-Speed RD10-145A |
| Rockwell ZF 10-Speed RM10-115A | Rockwell ZF 10-Speed RM10-125A | Rockwell ZF 10-Speed RM10-135A | Rockwell ZF 10-Speed RM10-145A |
| Rockwell ZF 10-Speed RMX10-115A | Rockwell ZF 10-Speed RMX10-125A | Rockwell ZF 10-Speed RMX10-135A | Rockwell ZF 10-Speed RMX10-145A |
| Rockwell ZF 10-Speed RMX10-155A | Rockwell ZF 10-Speed RMX10-165A | Rockwell ZF 13-Speed RMO13-145A | Rockwell ZF 9-Speed RM9-115A |
| Rockwell ZF 9-Speed RM9-125A | Rockwell ZF 9-Speed RM9-135A | Rockwell ZF 9-Speed RM9-145A | Rockwell ZF 9-Speed RM9-155A |
| Rockwell ZF 9-Speed RMO9-115B | Rockwell ZF 9-Speed RMO9-125A | Rockwell ZF 9-Speed RMO9-125B | Rockwell ZF 9-Speed RMO9-135A |
| Rockwell ZF 9-Speed RMO9-135B | Rockwell ZF 9-Speed RMO9-145A | Rockwell ZF 9-Speed RMO9-145B | Rockwell ZF 9-Speed RMX9-115B |
| Rockwell ZF 9-Speed RMX9-115R | Rockwell ZF 9-Speed RMX9-125A | Rockwell ZF 9-Speed RMX9-125B | Rockwell ZF 9-Speed RMX9-125R |
| Rockwell ZF 9-Speed RMX9-135A | Rockwell ZF 9-Speed RMX9-135B | Rockwell ZF 9-Speed RMX9-135R | Rockwell ZF 9-Speed RMX9-145A |
| Rockwell ZF 9-Speed RMX9-145B | Rockwell ZF 9-Speed RMX9-145R | Rockwell ZF 9-Speed RMX9-155B |








