Yuchai Engine- High Power with Low Emission
Technology

YUCHAI Engine stands as a global benchmark in heavy-duty diesel innovation. For over 70 years, Guangxi Yuchai Machinery Co., Ltd. has manufactured more than 600,000 engines annually, ranging from 37kW to 1000kW for trucks, construction, marine, and power generation. Whether you operate a fleet in mining, long-haul logistics, or precision agriculture—every YUCHAI Engine delivers extreme torque, low fuel consumption, and Euro III to Euro VI readiness. Our robust supply chain currently supports 15 subsidiaries and 19 overseas offices, distributing genuine components to over 180 countries.

YUCHAI Diesel Engine

YUCHAI Mono-Fuel Engine

YUCHAI Dual-Fuel Engines

Diesel Engine

Bestseller · Diesel Powertrain Series

YUCHAI Bus Engines

YUCHAI Truck Engine

YUCHAI Construction Machinery Engines

YUCHAI Agricultural Machinery Engines

YUCHAI Marine Engine

YUCHAI Single Generator

Mono-Fuel Engine

Clean energy · Eco-efficient

YUCHAI Bus Engines

YUCHAI Truck Engine

YUCHAI Marine Engines

YUCHAI Single Generator

Dual-Fuel Engines

Flexible dual-fuel · Smart savings

YUCHAI Marine Engine

YUCHAI Dual-Fuel Engines

Why Choose Genuine YUCHAI Engine Components?

Every YUCHAI Engine is engineered for high durability and lower total cost of ownership. After-sale support matters: Yuchai has built 276 service agents globally and operates a dedicated After Market Business ensuring genuine spare parts circulation. Genuine YUCHAI Engine parts extend life cycle by over 30% compared to non-OEM alternatives, aligning with factory torque curves and emission requirements. Our customers in Southeast Asia, Middle East, and Africa rely on 100% traceable parts including pistons, rings, connecting rods, and filter kits.

YUCHAI Engine Technical Data — YC6L Series Heavy Haul

YC6L series —co-developed with FEV Germany— delivers 260-350 hp for 8×4, 6×2 trucks and engineering vehicles. With the highest torque of 1400 N.m, this YUCHAI Engine reduces shifting frequency and increases climbing capability. Compact dry weight at 830kg extends frame life.

Highly Demanded YUCHAI Engine Spares — With OE Numbers

Piston Ring Set YC6L-33

Part: LF100-1004040*6

Cylinder Head Gasket YC4E

Part: YCS04200-68

Timing Idle Gear Shaft

Part: J5600-1002052

Cooling Fan Clutch YC6J

Part: C430L500-1G01-5

Connecting Rod YC6MK

Part: MK6105-1004020

Fuel Injection Pump YC4D

Part: D1204-1111010B

Glow Plug YC6A270

Part: 6QA6-1307017

Oil Pump Assembly YC4F

Part: F5000-1005360B

Global Footprint & OEM Service Network

YUCHAI Engine powers over 550,000 units across 180 countries. Our factory capacity reaches more than 500,000 units yearly with full digital traceability. In 2025, Vietnam inaugurated Yuchai’s modern engine plant —automation up to 90%, annual output 40,000 engines, producing K11, Y24, S04 and S07 heavy-duty lineups.YUCHAI Engine aftermarket includes genuine remanufactured components and life-cycle parts supply; with authorized dealers in Europe, North Africa, and Latin America ensuring 24/7 technical support.

Ongoing research: Yuchai holds 3600+ patents and 10 national “863” projects. Our lean operation YCOS integrates product development, manufacturing and marketing. The spare parts supply chain covers 49 series from mini to heavy-duty, all BOSCH or Delphi fuel systems, and genuine service kits for 100% customer satisfaction.

Fuel Economy & Life-Cycle Benefits

Compared with conventional diesel engines, YUCHAI Engine reduces fuel consumption by 6-12% through lightweight four-valve technology and high-efficiency turbo matching. With optimized torque backup factor (+25%), your total operating costs per km drop significantly. Moreover, the YC6L/K series engines boast oil change intervals up to 50,000 km for long-haul truck applications, which drastically reduces maintenance frequency.

Series Overview: YC6A, YC6MK, YC6K & YCK16

Besides YC6L, the YUCHAI Engine portfolio includes YC6A (lightweight heavy-haul, 260-310hp), YC6MK (high torque mining, up to 550hp), and the YCK16 series targeting 100-ton dump trucks. All share the same maintenance philosophy and spare part compatibility, meaning operators reduce inventory costs. Emissions ready: Euro III to Euro VI D (SCR / EGR). Yuchai also produces marine engines from 37 kW to 1000 kW, plus gas-powered units (YC6JN, YC6TN) for city buses.

For heavy truck fleets, the YUCHAI Engine provides the highest specific power per displacement, giving you an edge in logistics competitiveness. Frequent updates on parts availability: original Yuchai filters (oil/air/fuel) and wear parts like clutch cover & pressure plate are always in stock; our cross-border fulfillment reduces engine downtime. Global warranty: Up to 2 years or 200,000 km for main components when using genuine spares.