AMT I-Shift Gearbox Solenoid Valve Coil Kit (For WABCO / VOLVO)
Eliminate transmission shift errors and erratic gear drops with this premium AMT Transmission Solenoid Valve Coil Kit. Engineered as a high-precision original equipment specification rebuild component by WABCO, this workshop coil pack replaces internal electrical actuators within the shifting controller housing to restore seamless automated manual transmission (AMT) response without replacing the complete expensive control valve assembly.
📌 Key Highlights
- Official Reference Specification: Production identifier 4420612921 (often grouped as 4420612921*5 or 4420612921*4 sets), certified under automotive IATF 16949 quality standards.
- Targeted Actuation Overhaul: Replaces burnt, shorted, or high-resistance internal electromagnetic coils that trigger critical dash failure codes and manual lockouts.
- Extreme Thermal Defense: Wrapped in premium high-insulation structural composites capable of enduring high-frequency rapid cycling within hot gearbox oil atmospheres (-40°C to +125°C).
- Modular Fleet Servicing: Features standardized twin-contact terminals designed to drop seamlessly onto the original factory mechatronic flex circuit board.
🔄 Comprehensive Cross References & Complete Kits
To guarantee a 100% accurate workshop installation, this mechatronic coil set functions as the universal hardware base for the following identifiers:
- Core Component Reference: 4420612921 / 4420612921 5x / 4420612921 4x
- Associated O-Ring & Ribbon Kits: Matches WABCO 4462401214, 4462401224, and 4462403214 flexible connection overlays.
- Target Actuator Housings: Designed to rebuild WABCO central modules 4213552034, 4213555032, and 4213509322.
- Vehicle Brand Alliance: Engineered specifically for **VOLVO I-Shift** and **RENAULT Optidriver** 12-Speed automated transmission platforms.
🚚 Vehicle Fitment & Technical Suitability
| Manufacturer / Fleet | Compatible Commercial Models & Series | Gearbox Setup / Family Suitability | Service & Diagnostic Notes |
|---|---|---|---|
| VOLVO Trucks & Buses | FH12, FH13, FH16, FM10, FM11, FM12, FM13, FMX Series; Coach Chassis Platforms | Compatible with **Volvo I-Shift (AT/ATO Series)** and **Renault Optidriver** 12-Speed automated manual gearboxes (e.g., AT2412C, ATO2612D, ATO3112C). | Electrical mechatronic overhaul components. Clearing active transmission fault codes via a diagnostics tool (e.g., Volvo Tech Tool / PTT) is mandatory post-installation to re-index the solenoid actuation loops. |
| RENAULT TRUCKS | Magnum, Premium DXi 11 / 13, Kerax Heavy Vocational Lines |
Workshop Tip: When unbolting the actuator casing to insert the new coils, inspect the companion ribbon circuit for cracks or green copper scale. Always clean the coil slots of any old degraded hydraulic residue to prevent sealing pinches.
⚙️ Detailed Technical Specifications
- Product Type: Automated Manual Transmission (AMT) Actuator Shifting Solenoid Coil
- Net Component Weight: Approx. 0.100 kg per unit (Compact workshop multi-pack)
- Protection Class Rating: Waterproof and dustproof up to IP67 criteria
- Condition: 100% Brand New Premium Quality Component
