R4105ZD Ricardo S Diesel Engine
1500 rpm, 66 KW for Weifang Generator Genset
Product Overview
The R4105ZD is a four-cylinder water-cooled direct injection Ricardo-design diesel engine specifically engineered for generator duty applications.
Key Specifications
| Model |
R4105ZD, Weifang Ricardo series |
| Configuration |
Four-cylinder in-line, four-stroke, water-cooled, direct injection |
| Bore x Stroke |
105 x 125 mm |
| Displacement |
4.33 litres |
| Aspiration |
Turbocharged (Z suffix) |
| Rated Output |
56 kW @1500 rpm (75 HP); 60 kW @1800 rpm |
| Weight Reference |
Approximately 440 kg (for intercooled R4105IZLD build) |
| Application |
Diesel generator sets, stationary standby and prime power |
| Condition |
New (used and second-hand engines also available) |
Key Features
- Four-cylinder water-cooled direct injection Ricardo-design engine
- Bore and stroke 105 x 125 mm, displacement 4.33 litres
- Z suffix = turbocharged; L suffix = intercooled
- Rated 56 kW @1500 rpm and 60 kW @1800 rpm
- Classic pairing with 50 kW / 62.5 kVA generator sets
- Family power range spans 10 kW to 350 kW
Cross Compatibility Reference
R4105 Build Variants
| R4105D |
Naturally aspirated, 46 kW @1500 rpm |
| R4105ZD |
Turbocharged, 56 kW @1500 rpm |
| R4105ZLD / R4105IZLD |
Intercooled, 74 kW @1500 rpm |
Suffix Code Explanation
D = direct injection; Z = turbocharged; L = intercooled. Power increases with additional letters: 46 kW / 56 kW / 74 kW on the same block.
Six-Cylinder R Series
R6105ZD (105 x 125 mm, 6.49 litres, 98 kW @1800 rpm) and related variants.
Important Considerations
Engine vs Complete Genset: Most listings for this model are complete generator sets (engine plus alternator, base frame, control panel). A bare R4105ZD engine and a finished 50 kW set are different purchases.
Stroke Variation: The R prefix indicates 125 mm stroke (4.33L). ZH4105, K4105 and N4105 variants have 120 mm stroke (4.15L) - same bore class but different displacement.
Manufacturer Distinction: Weifang and Weichai are separate engine manufacturers with different parts systems, despite both being based in Shandong.
Power Ratings: 56 kW at 1500 rpm and 60 kW at 1800 rpm are generator-duty figures. Always specify duty, speed and alternator rating together.
Core Advantages
Engine and complete generator set quoted as separate purchases
Z and L suffix clearly decoded to prevent confusion between 46 kW, 56 kW and 74 kW builds
R prefix with 125 mm stroke clearly separated from ZH, K and N variants with 120 mm stroke
Duty, speed and alternator rating confirmed together before quoting
Related Products
Product Images
Frequently Asked Questions
What is this engine?
The R4105ZD, a four-cylinder 4.33 litre Weifang Ricardo diesel for generator set duty.
What is the bore, stroke and displacement?
105 x 125 mm giving 4.33 litres across four cylinders.
What do the Z and L mean?
Z is turbocharged and L adds intercooling, which raises output to 74 kW.
Is ZH4105ZD the same engine?
No - the ZH build is quoted at 105 x 120 mm, around 4.15 litres.
Is this a complete generator set?
No, this listing is the engine; the engine plus alternator set is quoted separately.
What do you need before dispatch?
The duty, rated speed and alternator rating, plus a photo of the engine nameplate.