Lister Petter
Lister Petter Lister 21/2 (JP2)
JP Series
Lister Petter Lister 21/2 (JP2) discontinued legacy engine. Small legacy Lister/Petter diesel with continuing owner searches for parts, manuals, and off-grid or marine auxiliary service.
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- Manufacturer files
- No datasheet
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Maximum Mechanical Power
- 16 kW
- Cylinders
- L2
- Displacement
- 2.9 L
- Rated Speed
- 1,200 RPM
Lister Petter Lister 21/2 (JP2) industrial power context
The Lister Petter Lister 21/2 (JP2) is a high-speed industrial diesel engine rated at 15.7 kW mechanical output at 1,200 RPM. It is used in off-road equipment and can support engineered variable-speed power systems, but its maximum power is not a direct 50/60 Hz alternator rating. Verify the drivetrain, power electronics, cooling, and emissions installation with Volvo Penta before specifying a generator package.
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Technical Specifications
| Brand | Lister Petter |
| Model | Lister 21/2 (JP2) |
| Series | JP Series |
| Configuration | L2, naturally aspirated |
| Cylinders | 2 |
| Displacement | 2.9 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Water-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | United Kingdom |
| Year Introduced | 1930 |
| Year Discontinued | 1952 |
Frequently asked questions
What is the maximum power output of the Lister Petter Lister 21/2 (JP2)?
The Lister Petter Lister 21/2 (JP2) has a maximum mechanical output of 15.7 kW at 1,200 rpm. This is a variable-speed off-road rating, not a fixed-speed generator-set rating.
What fuel does the Lister Petter Lister 21/2 (JP2) use?
The Lister Petter Lister 21/2 (JP2) is a diesel variable-speed industrial engine.
What is the displacement and cylinder configuration of the Lister 21/2 (JP2)?
The Lister Petter Lister 21/2 (JP2) is an inline-2 (2-cylinder) engine with a displacement of 2.9 L.
Is the Lister 21/2 (JP2) still in production?
No — the Lister Petter Lister 21/2 (JP2) is discontinued (production ended around 1952). Its specifications and datasheets remain archived here for reference.