Marine Engine
Weichai WP7 Marine Diesel Engine (148–295 hp)
Weichai WP7 7.5 L 6-cylinder diesel engine, 148–295 hp (110–220 kW), 11 ratings for marine work. Each unit nameplate-verified.
Specifications
- Engine Model
- WP7
- Displacement
- 7.5 L
- Cylinders & Configuration
- Inline 6, 4-cycle
- Rated Power Range
- 110–220 kW (148–295 hp) @ 1500–2250 rpm
- Aspiration
- Turbocharged Aftercooled
- Applications
- Marine
- Documentation
- Nameplate verification + load-test record per serial number
Overview
The Weichai WP7 is a 7.5 L 6-cylinder Weichai diesel engine supplied in 11 factory ratings from 148 hp (110 kW) to 295 hp (220 kW). Every rating listed on this page is a complete engine for marine duty, not a generator set, and each unit ships with its serial number recorded against the specification sheet that applies to it.
Ratings in this family differ in rated speed, peak torque and emissions tier rather than in displacement or cylinder count, so the choice between them is a duty-matching question. The specifications panel and the per-rating entries on this page are generated from the same source data, so a rating quoted here can be matched directly against a delivery document.
Specifications
The specifications panel lists the family-level values that are common to every WP7 rating, including the 7.5 L displacement and the inline 6-cylinder layout. Ratings that share displacement and cylinder count but differ in output are listed individually in the model selection section.
Model Selection: WP7 Ratings
Each entry in this section is one rating of the Weichai WP7. The rated power is the output at the stated speed; the peak torque figure is the value the rating develops at the lower speed shown, which is what normally decides whether a rating suits a given machine. Each rating carries a stable anchor, so a single rating can be linked or quoted directly.
WP7C150-15E120
WP7C150-15E120 — rated 110 kW (148 hp) at 1500 rpm.
WP7C150-15E220
WP7C150-15E220 — rated 110 kW (148 hp) at 1500 rpm.
WP7C190-18E220
WP7C190-18E220 — rated 140 kW (188 hp) at 1800 rpm.
WP7C240-18E120
WP7C240-18E120 — rated 176 kW (236 hp) at 1800 rpm.
WP7C240-18E220
WP7C240-18E220 — rated 176 kW (236 hp) at 1800 rpm.
WP7C268-18E120
WP7C268-18E120 — rated 197 kW (264 hp) at 1800 rpm.
WP7C268-18E220
WP7C268-18E220 — rated 197 kW (264 hp) at 1800 rpm.
WP7C278-21E120
WP7C278-21E120 — rated 205 kW (275 hp) at 2100 rpm.
WP7C278-21E220
WP7C278-21E220 — rated 205 kW (275 hp) at 2100 rpm.
WP7C300-22.5E120
WP7C300-22.5E120 — rated 220 kW (295 hp) at 2250 rpm.
WP7C300-22.5E220
WP7C300-22.5E220 — rated 220 kW (295 hp) at 2250 rpm.
Applications
WP7 engines in this family are normally specified for marine work.
Marine: ratings are quoted against the propulsion or auxiliary duty required, with the gearbox ratio and the duty classification taken into account.
Verification, Documentation and Ordering
Each engine is offered with nameplate verification + load-test record per serial number. That means the model and rating printed on the engine nameplate can be checked against the record issued for that serial number before shipment, which is the point most buyers of re-rated or re-exported engines want covered.
To receive a quotation, send the exact rating from the matrix above (for example WP7C300-22.5E220), the machine or application it will drive, the quantity, and the destination port. If the rating you need is not listed, send the model and the required output and we will confirm whether it belongs to this family or to a neighbouring one.
Buyer tip: Send your WP7 specification, quantity and destination port for a verified quotation and lead time.
Frequently Asked Questions
What is the power range of the WP7?
The 11 ratings listed on this page run from 148 hp (110 kW) to 295 hp (220 kW), at governed speeds between 1500 and 2250 rpm.
What displacement and cylinder count does the WP7 use?
Every rating in this family shares the same 7.5 L displacement and inline 6-cylinder, 4-cycle configuration. Ratings differ in output, rated speed and emissions tier rather than in the base engine.
What is the difference between WP7C300-22.5E120 and WP7C300-22.5E220?
WP7C300-22.5E120 is rated 220 kW (295 hp) at 2250 rpm, while WP7C300-22.5E220 is rated 220 kW (295 hp) at 2250 rpm. They use the same base engine; the higher rating is the one to specify when the driven load needs the extra torque at the lower speed.
How is a WP7 rating ordered?
Send the exact rating shown in the model selection table, the application it will drive, the quantity and the destination port. The engine is then quoted against that rating and confirmed against its nameplate and load-test record.
