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  • July 04, 2025

WP4.1 Water pump 1001782195 weichai genuine parts


Engine Technical Specifications: WP4.1 & WP4.1N Series


1. WP4.1 Series Engine Models

SeriesModelAspirationRated Power (kW/Ps)Speed (r/min)Fuel SystemPower Rating
WP4.1WP4.1C54-15Turbocharged (T)40 / 541500Mechanical PumpP1
WP4.1WP4.1C68-15Turbocharged (T)50 / 681500Mechanical PumpP1
WP4.1WP4.1C82-18Turbocharged (T)60 / 821800Mechanical PumpP1

General Parameters – WP4.1

  • Engine Type: Four-stroke, water-cooled, in-line, turbocharged and aftercooled

  • Number of Cylinders: 4

  • Bore × Stroke: 105 × 118 mm

  • Displacement: 4.088 L

  • Minimum Fuel Consumption Rate: 198 g/kW·h

  • Oil Consumption Rate: ≤ 0.1 g/kW·h

  • Idle Speed: 700 r/min

  • Rotation: Counter-clockwise (facing the flywheel)

  • Net Weight: 480 kg

  • Noise Level: ≤ 92 dB(A)

  • Dimensions (L × W × H): 960 × 700 × 850 mm


2. WP4.1N Series Engine Models

SeriesModelAspirationRated Power (kW/Ps)Speed (r/min)Fuel SystemPower Rating
WP4.1NWP4.1NC120-18E220Turbocharged & Aftercooled (TA)88 / 1201800HPCRP1
WP4.1NWP4.1NC130-21E220TA95 / 1302100HPCRP1
WP4.1NWP4.1NC142-18E220TA105 / 1421800HPCRP1
WP4.1NWP4.1NC163-21E220TA120 / 1632100HPCRP1
WP4.1NWP4.1NC190-26E220TA140 / 1902600HPCRP3

General Parameters – WP4.1N

  • Engine Type: Four-stroke, water-cooled, in-line, turbocharged or turbocharged & aftercooled

  • Number of Cylinders: 4

  • Bore × Stroke: 105 × 130 mm

  • Displacement: 4.5 L

  • Minimum Fuel Consumption Rate: 195 g/kW·h

  • Oil Consumption Rate: ≤ 0.2 g/kW·h

  • Idle Speed: 650 ± 30 r/min

  • Rotation: Counter-clockwise (facing the flywheel)

  • Net Weight: 600 kg

  • Noise Level: ≤ 100 dB(A)

  • Dimensions (L × W × H): 1065 × 819 × 1056 mm

WP4.1 weichai

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