Weichai
Weichai 12M33D1265E201
Weichai 12M33D1265E201. Source: 发动机数据单-12M33-0005_12M33D1265E201_NonRad_Datasheet_26-04-19.pdf, p.1. Gross engine mechanical PRP 1150 kW / ESP 1265 kW at 1800 rpm. Net power is configuration-dependent and separate from gross mechanical output; no electrical genset output inferred. Emissions statement as printed: Unregulated; no additional certification inferred. Production status is unknown; discontinued is the user-authorized catalogue classification, not manufacturer-confirmed cessation. No production-end year asserted. Physical specifications added from manufacturer datasheets, 2026-10-21: compression ratio 15:1; dry engine weight 3580 kg without radiator and radiator pipes; overall dimensions without radiator (L × W × H) 2880 × 1710 × 2215 mm. Sources: 发动机数据单-12M33-0005_12M33D1265E201_NonRad_Datasheet_26-04-19.pdf (physical data on pp.1–2). Existing populated specification fields were not overwritten. Weight is dry engine weight, not genset shipping weight.
Need parts or a replacement for 12M33D1265E201?
Scan QRHide QR
General WhatsApp chatScan with your phone. Add the model and your request in chat.Haifeng sales team- Supporting documents
- 1 document · 1 datasheet
- Last updated
- 2026-10-21
- Package route
- diesel generator sets
- Mechanical Output
- 1,265 kW
- Cylinders
- V12
- Displacement
- 39.2 L
- Rated Speed
- 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1150 | — | — |
| Standby Power | 1265 | — | — |
Estimated rating: 1138.5 kWe (1265 kW × 0.90) · 60 Hz · standby
Estimated rating: 1035 kWe (1150 kW × 0.90) · 60 Hz · prime
Planning estimate, not a manufacturer generator rating. Confirm the alternator, engine speed and operating conditions.
Weichai 12M33D1265E201 overhaul & repair parts
Need help identifying a part for your 12M33D1265E201?
Share your nameplate, parts list and destination for a quote.
Identify my part on WhatsAppAvailability and earliest dispatch confirmed for your enquiry.
Opens WhatsApp. Attach photos in the chat.
What to send for a fitment check
- Take a clear photo of the engine nameplate.
- Tell us what needs repair or replacement.
- Send both in WhatsApp to start a fitment check.
Start with engine identification
We do not have a reviewed public parts preview for this model yet. Send the engine details and tell us what needs repair.
Illustrations only — not a model-specific kit or stock confirmation.
View 12M33D1265E201 spec image
Weichai 12M33D1265E201 generator set context
The Weichai 12M33D1265E201 is listed here as a diesel generator-drive engine for 60 Hz generator sets, with a headline 1,265 kW / 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.
Model name formats
Technical Specifications
| Brand | Weichai |
| Model | 12M33D1265E201 |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 39.2 L |
| Compression Ratio | 15:1 |
| Dry Weight | 3580 kg |
| Dimensions (L×W×H) | 2880 × 1710 × 2215 mm |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
Frequently asked questions
Does the 12M33D1265E201 run at 50 Hz or 60 Hz?
The Weichai 12M33D1265E201 is rated for 60 Hz (1,800 rpm).
What fuel does the Weichai 12M33D1265E201 use?
The Weichai 12M33D1265E201 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 12M33D1265E201?
The Weichai 12M33D1265E201 is a V12 (12-cylinder) engine with a displacement of 39.2 L.
Is the 12M33D1265E201 still in production?
No — the Weichai 12M33D1265E201 is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the 12M33D1265E201?
This page links reference documents for the Weichai 12M33D1265E201. Check each document's title, model coverage, revision and rating conditions before using it for selection.