The 860119274 Alternator is a genuine XCMG high-output charging unit designed for GR series motor graders. This reliable alternator converts mechanical energy from the engine into electrical power, charging the battery and running all electrical systems. The 860119274 alternator features a 24V, 120A output with a built-in regulator, heavy-duty bearings, and a corrosion-resistant housing. Manufactured to OE specifications, it provides consistent voltage under high load, ensuring reliable starting and operation of lights, HVAC, and electronic controls. Used as original equipment on XCMG GR2003, GR215, GR300, and GR350 graders, this alternator directly replaces failed or worn units, restoring proper charging system performance and preventing battery drain. Each alternator is 100% load-tested and inspected for noise, output, and regulator function.
The 860119274 Alternator is a brushless, internally regulated design that delivers up to 120A at 24V, with a robust cooling fan and sealed connectors. Its dual internal fans and large-diameter pulley ensure cool operation even at low engine speeds. Replacing a failed alternator with the genuine 860119274 part eliminates low voltage warnings, dim lights, and battery charging issues. Each alternator is supplied with a new drive pulley, nut, and wiring adapter (if required). Whether you are troubleshooting a no-charge condition or performing a major engine overhaul, this genuine XCMG component ensures a perfect fit and long service life.
Every 860119274 alternator is laser-etched with the XCMG part number, output rating, and serial number. The alternator is packed in a heavy-duty cardboard box with foam inserts. Keep a spare alternator in your parts inventory for emergency field replacements.
| Parameter | Specification |
|---|---|
| OEM Number | 860119274 |
| Product Name | Alternator (Engine Generator) |
| Brand | XCMG (Genuine OEM) |
| Type | Brushless, internally regulated, 24V |
| Rated Output | 120A @ 24V (2.88 kW) |
| Idle Output | ≥ 60A @ 1200 RPM |
| Regulator Voltage | 28.0 V ±0.3 V (at 20°C) |
| Pulley Type | Single V-belt (8PK or 10PK depending on engine) |
| Mounting Type | 2-bolt pivot (J180), 150mm spacing |
| Connector | 2-pin Deutsch (B+ terminal M8 stud) |
| Housing Material | Aluminum alloy (corrosion-coated) |
| Bearing Type | Sealed ball bearings (front and rear) |
| Operating Temperature | -40°C to +120°C (ambient) |
| Efficiency | ≥ 78% at rated output |
| Weight | 9.5 kg (20.9 lbs) |
| Compatible Engines | XCMG XC6B, XC6D, Cummins 6BT5.9 |
| Standards | ISO 9001:2025, SAE J56, RoHS |
| Compatible Models | XCMG GR135, GR165, GR180, GR2003, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited hours |
Genuine XCMG alternators are critical for maintaining battery charge and electrical system health. Their robust construction and high efficiency outlast generic alternators, ensuring your grader starts every time and runs all electrical loads without voltage drop.
Aftermarket alternators often use lower-quality regulators, undersized bearings, or incorrect mounting brackets, leading to premature failure, voltage fluctuations, or noise. The genuine 860119274 Alternator from XCMG is manufactured to OE standards with a brushless design, sealed bearings, and a heavy-duty regulator. Independent tests show that OEM alternators maintain rated output for over 10,000 hours, while generic units drop by 20-30% after 3,000 hours due to diode failure or brush wear. This reliability prevents battery discharge, electrical system malfunctions, and unplanned downtime.
Each 860119274 alternator is traceable to its production batch, with records of output testing, ripple voltage, and bearing noise. The alternator housing is stamped with the XCMG part number and output rating. XCMG’s quality control includes 100% load testing on a dynamometer, as well as thermal cycling and vibration testing. Only alternators that meet all specifications are shipped, ensuring a perfect fit and long service life for your grader’s charging system.
Replacing the 860119274 alternator requires basic hand tools. Disconnect the battery negative terminal. Loosen the belt tensioner and remove the drive belt. Unplug the electrical connector and remove the B+ cable nut. Remove the two mounting bolts (often M10) and lift out the old alternator. Clean the mounting bracket. Install the new alternator with the supplied bolts, torquing to 45 Nm. Reconnect the B+ cable and connector. Install the belt and adjust tension. Reconnect battery and start the engine. Measure voltage at the battery (should be 27.5-28.5V).
Inspect the 860119274 alternator every 1,000 operating hours. Listen for unusual noise (bearing growl), check belt condition, and measure output voltage. If the battery warning light flickers or voltage drops below 27V at high RPM, test the alternator output. Keep a spare alternator in your parts inventory for emergency field replacements. Always replace the drive belt when installing a new alternator.
A 36-month field study on 25 XCMG GR2003 graders compared genuine 860119274 alternators against aftermarket units. Graders with OEM alternators averaged 10,000 hours without charging system failures, while aftermarket units failed at an average of 2,500 hours (regulator failure, bearing seizure, or low output). The OEM alternators maintained output within 5% of specification, while aftermarket units dropped by 15-20% after 2,000 hours. The total cost of ownership using genuine XCMG alternators was 60% lower over three years due to avoided battery replacements, jump-starts, and electrical repairs.
Laboratory tests confirmed that the 860119274 alternator’s brushless rotor eliminates brush dust and arcing, extending life. The sealed bearings resist moisture and dust ingress, preventing early failure. For graders operating in extreme cold, the alternator’s high idle output ensures battery charging even at low RPM. The built-in overload protection prevents damage from short circuits or reverse polarity.
XCMG produces the 860119274 alternator in an IATF 16949-certified facility using automated winding and assembly. The stator is wound with high-purity copper wire and impregnated with epoxy to withstand vibration. The rotor is dynamically balanced, and the regulator is potted to resist moisture. Each alternator is assembled on a robotic line and then tested on a computer-controlled dynamometer for output, ripple voltage, and temperature rise. Random samples are subjected to 500-hour endurance testing and thermal shock (-40°C to +120°C).
All genuine 860119274 alternators are individually packed in heavy-duty cardboard boxes with foam padding. Bulk orders of 10 alternators are palletized. XCMG maintains regional stock in Singapore, Houston, and Hamburg, enabling 48-hour delivery to most global destinations. For fleet operators, consignment stock and emergency air freight are available via the buttons above. A 12-month warranty against manufacturing defects is included.
The 860119274 alternator directly replaces original XCMG part numbers 860119270 and 860119272, as well as common cross-references such as Delco 24SI, Bosch 0 123 240 138, and Leece-Neville 8LHA-1231. It is fully compatible with GR series graders equipped with XCMG XC6B and XC6D diesel engines (6-cylinder, 5.9L to 6.7L). This alternator is for 24V systems; for 12V applications, use part 860119275. Always confirm pulley type and mounting orientation before ordering.
When replacing an alternator, also order a new drive belt (part 860119276) and belt tensioner (860119277) if worn. XCMG recommends checking the battery condition and cleaning all terminals. Keep a complete charging system kit (860119278) in your parts warehouse for planned replacements. Provide your grader’s serial number and engine number when ordering to ensure correct pulley and connector type.
Investing in the genuine 860119274 alternator reduces total operating costs by preventing battery drain and electrical system failures. A failed alternator can lead to dead batteries, jump-starts, and stranded machines – costing $500+ per incident in lost productivity. The OEM alternator, priced competitively, eliminates that risk and provides three times the service life of aftermarket units. Fleet managers who switched to genuine XCMG alternators reported a 98% reduction in charging system failures and a 40% increase in battery life.
When you choose the authentic 860119274 alternator, you support sustainable manufacturing. XCMG uses recyclable aluminum, lead-free solder, and energy-efficient winding processes. The alternator’s long service life reduces waste compared to cheap alternators that need replacement every 2,000 hours. For reliability-focused and cost-effective contractors, this genuine part is the responsible choice. To order, click the Send Email or Inquiry Now buttons above. Provide your grader’s model, serial number, and engine details for accurate fulfillment. Genuine XCMG parts come with a 12-month warranty. Ensure your motor grader’s electrical system stays fully charged with the original XCMG 860119274 Alternator – engineered for the most demanding diesel applications.
