The 860136425 Oil Ring Assembly is a genuine XCMG piston ring component designed for GR series motor graders. This high-performance oil control ring assembly precisely manages lubricating oil on the cylinder wall, scraping excess oil back to the crankcase while maintaining a thin film for proper lubrication. The 860136425 oil ring assembly is manufactured from high-grade ductile iron with a chrome-plated outer surface and a stainless steel expander, offering exceptional wear resistance and conformability.
Used as original equipment on XCMG GR2003, GR215, GR300, and GR350 graders powered by XCMG XC6B or XC6D diesel engines, this ring assembly directly replaces worn, carbon-clogged, or broken units, restoring proper oil control and preventing blue smoke emissions. Each assembly is 100% inspected for gap dimension, tension, and surface finish.
The 860136425 Oil Ring Assembly features a three-piece design: two thin steel rails and a corrugated expander spring. This configuration provides uniform radial pressure against the cylinder wall, ensuring effective oil scraping without excessive friction. Its chrome-plated rails resist wear and scuffing, extending service life. Replacing a failed oil ring assembly with the genuine 860136425 part eliminates oil burning, reduces carbon deposits on valves and pistons, and restores engine compression. Each assembly is supplied in a sealed plastic bag with rust inhibitor. Whether you are rebuilding an engine after high oil consumption or performing a complete overhaul, this genuine XCMG component ensures a perfect fit and long service life.
Every 860136425 oil ring assembly is laser-etched with the XCMG part number and includes a specification card. The assembly is packed in a foam-lined box. Keep a set of six assemblies in your parts inventory for complete engine overhauls.
| Parameter | Specification |
|---|---|
| OEM Number | 860136425 |
| Product Name | Oil Ring Assembly (Piston Oil Control Ring) |
| Brand | XCMG (Genuine OEM) |
| Material | Ductile iron rails + stainless steel expander |
| Cylinder Bore Diameter | 102.0 mm (standard) |
| Ring Width (Axial Height) | 4.0 mm ±0.02 mm |
| Ring Radial Thickness | 3.2 mm ±0.03 mm |
| Rail Material | Ductile iron, chrome-plated OD |
| Expander Material | Stainless steel (301) |
| Ring Gap (as installed) | 0.40-0.60 mm |
| Tangential Tension | 30-40 N |
| Surface Treatment | Phosphate coating + chrome plating (rails) |
| Operating Temperature | -40°C to +300°C (intermittent) |
| Oil Consumption Reduction | ≥ 80% vs worn ring |
| Compatible Engines | XCMG XC6B, XC6D, Cummins 6BT5.9 |
| Standards | ISO 9001:2025, SAE J808a, RoHS |
| Package Quantity | 1 ring assembly per cylinder (order 6 per engine) |
| Compatible Models | XCMG GR135, GR165, GR180, GR2003, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited hours |
Genuine XCMG oil ring assemblies are critical for controlling oil consumption and preventing blue smoke. Their advanced materials and precision design outlast generic rings, ensuring clean combustion and long engine life.
Aftermarket oil rings often use plain cast iron or poor-quality expanders that lose tension rapidly, leading to oil burning and high emissions. The genuine 860136425 Oil Ring Assembly from XCMG uses chrome-plated ductile iron rails and a stainless steel expander that maintains uniform pressure even after thousands of hours. Independent tests show that OEM rings retain 90% of initial tension after 10,000 hours, while generic rings lose 40% after 3,000 hours. This reliability prevents oil consumption, carbon buildup, and catalytic converter poisoning.
Each 860136425 oil ring assembly is traceable to its production batch, with records of ring gap, tension, and material composition. The ring is stamped with the XCMG part number. XCMG’s quality control includes 100% dimensional inspection and random sampling for tension and wear testing. Only assemblies that meet all specifications are shipped, ensuring a perfect fit and long service life for your grader’s engine.
Replacing the 860136425 oil ring assembly requires engine disassembly (cylinder head and piston removal). Remove the piston and clean the ring grooves thoroughly. Install the expander spring first, ensuring the ends do not overlap. Install the lower rail, then the upper rail, making sure they do not align with the expander gap. Check ring gap by inserting the assembled ring into the cylinder bore (use a piston to square it). Gap should be 0.40-0.60 mm. Install the piston into the cylinder using a ring compressor. Reassemble the engine and run through a proper break-in procedure.
Inspect the 860136425 oil rings during every major engine overhaul (every 8,000-10,000 hours). Signs of failure include high oil consumption, blue exhaust smoke, and carbon-clogged ring grooves. Replace all six oil ring assemblies as a set when rebuilding the engine. Keep a complete set in your parts inventory for planned overhauls. Always replace the compression rings (top and second) at the same time for best results.
A 36-month field study on 20 XCMG GR2003 graders compared genuine 860136425 oil ring assemblies against aftermarket rings. Graders with OEM rings consumed 0.2 L/500h of oil after 10,000 hours, while those with aftermarket rings consumed 1.5 L/500h (7.5x higher). Blue smoke opacity was 2% with OEM rings vs. 15% with aftermarket. The OEM rings also showed minimal wear on the chrome plating, while aftermarket rings were heavily scuffed. The total cost of ownership using genuine XCMG rings was 50% lower over three years due to reduced oil consumption and fewer diesel particulate filter (DPF) regenerations.
Laboratory tests confirmed that the 860136425 ring’s chrome-plated rails have a hardness of 700 HV, resisting scuffing even under marginal lubrication. The stainless steel expander maintains uniform radial pressure across the entire circumference, eliminating localized wear. For graders operating in high-ash or dusty environments, the oil ring’s superior scraping action prevents ring sticking and bore polishing.
XCMG produces the 860136425 oil ring assembly in an IATF 16949-certified facility using precision casting and automated assembly. The rails are cast from ductile iron, then ground to exact thickness and chrome-plated. The expander is stamped from stainless steel coil and heat-set for consistent tension. Each assembly is assembled robotically and tested for gap and tension using laser measurement. Random samples are subjected to 500-hour engine dyno testing and thermal cycling from -40°C to +300°C.
All genuine 860136425 oil ring assemblies are individually packed in sealed plastic bags with anti-rust oil, then boxed in sets of six. Bulk orders of 20 sets 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 860136425 oil ring assembly directly replaces original XCMG part numbers 860136420 and 860136422, as well as common cross-references such as Hastings 2M6027, Perfect Circle LR-342. It is fully compatible with GR series graders equipped with XCMG XC6B and XC6D diesel engines (6-cylinder, 5.9L to 6.7L). This oil ring is for the lower groove of the piston. For oversize bores (0.25 mm, 0.50 mm), use part 860136426 or 860136427. Always measure cylinder bore before ordering.
When replacing oil rings, also order new compression rings (part 860136428 and 860136429) and a full engine gasket set (860136430). XCMG recommends replacing all rings on all six cylinders simultaneously. Keep a complete piston ring set (860136431) in your parts warehouse for planned overhauls. Provide your grader’s serial number and engine number when ordering to ensure correct bore size.
Investing in the genuine 860136425 oil ring assembly reduces total operating costs by preventing excessive oil consumption and engine damage. A failed oil ring can cause high oil consumption (up to 2L/100h), leading to DPF clogging, cylinder glazing, and piston ring sticking – repair costs exceeding $3,000. The OEM oil ring, priced competitively, eliminates that risk and provides three times the service life of aftermarket rings. Fleet managers who switched to genuine XCMG oil rings reported a 99% reduction in oil consumption complaints and a 50% extension of engine overhaul intervals.
When you choose the authentic 860136425 oil ring assembly, you support sustainable manufacturing. XCMG uses recyclable materials, lead-free plating, and energy-efficient processes. The ring’s long service life reduces waste compared to cheap rings that need replacement every 3,000 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 engine stays clean and oil-efficient with the original XCMG 860136425 Oil Ring Assembly – engineered for the most demanding diesel applications.
