Marine Engine
Weichai WP6 Marine Diesel Engine (80–225 hp)
Weichai WP6 6.75 L 6-cylinder diesel engine, 80–225 hp (60–168 kW), 37 ratings for marine work. Each unit nameplate-verified.
Specifications
- Engine Model
- WP6
- Displacement
- 6.75 L
- Cylinders & Configuration
- Inline 6, 4-cycle
- Rated Power Range
- 60–168 kW (80–225 hp) @ 1500–2300 rpm
- Aspiration
- Turbocharged Aftercooled
- Applications
- Marine
- Documentation
- Nameplate verification + load-test record per serial number
Overview
The Weichai WP6 is a 6.75 L 6-cylinder Weichai diesel engine supplied in 37 factory ratings from 80 hp (60 kW) to 225 hp (168 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 WP6 rating, including the 6.75 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: WP6 Ratings
Each entry in this section is one rating of the Weichai WP6. 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.
WP6CD60E200NG
WP6CD60E200NG — rated 60 kW (80 hp) at 1500 rpm.
WP6C122-15
WP6C122-15 — rated 90 kW (121 hp) at 1500 rpm.
WP6C122-15E121
WP6C122-15E121 — rated 90 kW (121 hp) at 1500 rpm.
WP6C122-15E220
WP6C122-15E220 — rated 90 kW (121 hp) at 1500 rpm.
WP6C140-23
WP6C140-23 — rated 103 kW (138 hp) at 2300 rpm.
WP6C142-18
WP6C142-18 — rated 105 kW (141 hp) at 1800 rpm.
WP6C142-18E121
WP6C142-18E121 — rated 105 kW (141 hp) at 1800 rpm.
WP6C142-18E220
WP6C142-18E220 — rated 105 kW (141 hp) at 1800 rpm.
WP6C150-15
WP6C150-15 — rated 110 kW (148 hp) at 1500 rpm.
WP6C150-15E121
WP6C150-15E121 — rated 110 kW (148 hp) at 1500 rpm.
WP6C150-15E220
WP6C150-15E220 — rated 110 kW (148 hp) at 1500 rpm.
WP6C156-21
WP6C156-21 — rated 115 kW (154 hp) at 2100 rpm.
WP6C163-23
WP6C163-23 — rated 120 kW (161 hp) at 2300 rpm.
WP6CD132E220
WP6CD132E220 — rated 120 kW (161 hp) at 1500 rpm.
WP6CD132E221
WP6CD132E221 — rated 120 kW (161 hp) at 1800 rpm.
WP6CD120E200NG
WP6CD120E200NG — rated 120 kW (161 hp) at 1500 rpm.
WP6CD132E200
WP6CD132E200 — rated 120 kW (161 hp) at 1500 rpm.
WP6CD132E201
WP6CD132E201 — rated 120 kW (161 hp) at 1800 rpm.
WP6C165-18
WP6C165-18 — rated 122 kW (164 hp) at 1800 rpm.
WP6C165-18E121
WP6C165-18E121 — rated 122 kW (164 hp) at 1800 rpm.
WP6C165-18E220
WP6C165-18E220 — rated 122 kW (164 hp) at 1800 rpm.
WP6C185-21
WP6C185-21 — rated 136 kW (182 hp) at 2100 rpm.
WP6C185-21E121
WP6C185-21E121 — rated 136 kW (182 hp) at 2100 rpm.
WP6C185-21E220
WP6C185-21E220 — rated 136 kW (182 hp) at 2100 rpm.
WP6CD152E220
WP6CD152E220 — rated 138 kW (185 hp) at 1500 rpm.
WP6CD152E200
WP6CD152E200 — rated 138 kW (185 hp) at 1500 rpm.
WP6CD158E221
WP6CD158E221 — rated 144 kW (193 hp) at 1800 rpm.
WP6CD158E201
WP6CD158E201 — rated 144 kW (193 hp) at 1800 rpm.
WP6C198-23
WP6C198-23 — rated 145 kW (194 hp) at 2300 rpm.
WP6C198-23E121
WP6C198-23E121 — rated 145 kW (194 hp) at 2300 rpm.
WP6C198-23E220
WP6C198-23E220 — rated 145 kW (194 hp) at 2300 rpm.
WP6C220-23
WP6C220-23 — rated 162 kW (217 hp) at 2300 rpm.
WP6C220-23E121
WP6C220-23E121 — rated 162 kW (217 hp) at 2300 rpm.
WP6C220-23E220
WP6C220-23E220 — rated 162 kW (217 hp) at 2300 rpm.
WP6C25023
WP6C25023 — rated 168 kW (225 hp) at 2230 rpm.
WP6C25023E121
WP6C25023E121 — rated 168 kW (225 hp) at 2230 rpm.
WP6C25023E220
WP6C25023E220 — rated 168 kW (225 hp) at 2230 rpm.
Applications
WP6 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 WP6C25023E220), 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 WP6 specification, quantity and destination port for a verified quotation and lead time.
Frequently Asked Questions
What is the power range of the WP6?
The 37 ratings listed on this page run from 80 hp (60 kW) to 225 hp (168 kW), at governed speeds between 1500 and 2300 rpm.
What displacement and cylinder count does the WP6 use?
Every rating in this family shares the same 6.75 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 WP6C25023E121 and WP6C25023E220?
WP6C25023E121 is rated 168 kW (225 hp) at 2230 rpm, while WP6C25023E220 is rated 168 kW (225 hp) at 2230 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 WP6 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.
