PSI
PSI 5.7L
PSI 5.7L is a 5.74 L V8 spark-ignition natural-gas generator engine. Natural-gas ratings: 50 Hz prime 50 kWe / 58 kWm; 50 Hz standby 55 kWe / 65 kWm; 60 Hz prime 55 kWe / 70 kWm; 60 Hz standby 60 kWe / 78 kWm. Ratings exclude propane/LPG data and were verified from official PSI natural-gas rating tables.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-07-24
- Package route
- gas generator sets
- Standby Power · 50 Hz
- 69 kVA
- Electrical Output
- 55 kWe
- Cylinders
- V8
- Displacement
- 5.74 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 58 | 50 | 62.5 |
| Standby Power | 65 | 55 | 68.8 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 70 | 55 | 68.8 |
| Standby Power | 78 | 60 | 75 |
Ask about PSI 5.7L
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PSI 5.7L overhaul & repair parts
Already running a PSI 5.7L? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
Reviewed part-number references
A starting point for identification. Fitment must be confirmed before ordering.
- Piston102635
Piston
Fitment check: The archived source prints complete PSI model 5.7L and exact piston part number 102635 in one bounded record. The book is PSI-authored and Winco-hosted, but the row does not establish a serial/build break or universal procurement quantity. No quantity is imported. Confirm engine serial/build, spec 39001064, piston dimensions, and current PSI part status before ordering.
Source: Power Solutions International GM 5.7L Engine Parts Book hosted by Winco
Selected references only; this is not a complete overhaul list or a stock listing.
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PSI 5.7L generator set context
The PSI 5.7L is listed here as a natural gas generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 69 kVA / 55 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | PSI |
| Model | 5.7L |
| Configuration | V8 |
| Cylinders | 8 |
| Displacement | 5.74 L |
| Compression Ratio | 9.4:1 |
| Dry Weight | 196 kg |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | EPA |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the PSI 5.7L?
The PSI 5.7L is rated at 69 kVA standby / 63 kVA prime at 50 Hz (1,500 rpm); and 75 kVA standby / 69 kVA prime at 60 Hz (1,800 rpm).
Does the 5.7L run at 50 Hz or 60 Hz?
The PSI 5.7L is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the PSI 5.7L use?
The PSI 5.7L is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the 5.7L?
The PSI 5.7L is a V8 (8-cylinder) engine with a displacement of 5.74 L.
What emissions information is listed for the 5.7L?
This record lists U.S. EPA Stationary for the PSI 5.7L. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the PSI 5.7L?
The PSI 5.7L is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the 5.7L?
This page links reference documents for the PSI 5.7L. Check each document's title, model coverage, revision and rating conditions before using it for selection.