Forklift Solenoid Valve and Coil Selection: Voltage, Bore and Valve Function
A replacement coil and a complete valve are different purchases. Identify the coil’s electrical and stem interface separately from the valve’s hydraulic function, ports and mounting.

N163-611100-521 two-section electric control-valve assembly. This is not a standalone coil photograph.
First identify what is being replaced
| Item | What it includes | Key matching evidence |
|---|---|---|
| Solenoid coil | Electrical winding and connector around a valve tube/stem | Voltage, AC/DC, power or exact code, bore and installed length |
| Cartridge valve | Hydraulic valve fitted into a specified cavity | Exact valve code, function, cavity/thread, seals and coil requirement |
| Valve with body | Valve plus a ported body or manifold | Port sizes, mounting and hydraulic circuit in addition to valve identity |
| Multi-section control valve | Assembly with several working sections | Section functions, port layout, actuation and complete assembly code |
The same voltage can belong to different coil families
Initial current and power describe the manufacturer’s stated condition; they must not be relabelled as universal hot-coil values. Connector and suppression options also matter: for example, HydraForce identifies its DR connection as Deutsch DT04-2P. Record any diode marking and verify polarity against the vehicle wiring.
| Coil family | 12 V example | 24 V example | Implication |
|---|---|---|---|
| 08-xxDxx | 1.23 A; 14.7 W initial | 0.61 A; 14.7 W initial | Match the full coil code and connector option |
| 08-xxExx | 1.36 A; 16.33 W initial | 0.71 A; 17.07 W initial | A 24 V label alone does not make D and E coils equivalent |
A valve function has more detail than “normally closed”
HydraForce SV08-20 is a two-way, normally closed poppet cartridge for cavity VC08-2. Its published flow description distinguishes the two port directions: de-energised, port 2 to 1 is blocked while port 1 to 2 has a check function. This example shows why a hydraulic symbol and numbered ports are more useful than a generic “on/off valve” description. When energized, port 2 to 1 opens, while port 1 to 2 is severely restricted.
For a replacement, send the valve code or hydraulic symbol, port markings and the function it controls—such as lift, lower, tilt or an attachment circuit. Do not infer a cavity size, thread or flow direction from the coil family number.
A complete valve photograph is not a coil specification
If this is the type of assembly you need, quote the complete number and provide the old valve’s port and connector views. If you need only a coil, say so explicitly and include its own markings.
N163-611100-521 is an existing two-section control-valve reference. The packaged assembly photo is not a standalone coil photograph and does not establish coil voltage, bore diameter or valve-stem dimensions. View full photo
Measure the interface without guessing the specification
For a coil-only order, begin with its full code and AC/DC supply; for a valve order, begin with the valve or assembly code and required hydraulic function. Follow with the relevant bore/stem and electrical connection, or cavity, seals, ports and mounting. Before accepting the candidate, resolve the coil/valve pairing, polarity and circuit flow direction for that exact assembly; a shared voltage or coil-family number is not the final match.
- Coil: capture its full code, AC/DC voltage, power marking, connector and suppression marking.
- Mechanical fit: record the bore, overall height, installed stem length and retaining arrangement from a drawing or safely accessible removed part. A coil family number is not a bore measurement.
- Cartridge: provide the valve code, cavity or thread reference and seal option where known.
- Complete valve: add the hydraulic symbol, port labels, mounting pattern and function of each section.
- If access requires dismantling a pressurised system, send the available labels and photos first and leave further work to qualified service personnel.
Ask about the part you need
A part number is optional. Start with the information you have.
Related parts and selection information
Technical references
Manufacturer references describe particular products or families. They do not establish Authpart stock or compatibility with your truck.