The genuine XCMG 380902493 Plug is a critical sealing component designed for hydraulic ports, threaded gallery holes and oil passages on XCMG GR series motor graders. This original equipment (OEM) plug prevents contamination ingress, fluid leaks and thread damage in demanding construction environments. Manufactured from high-strength carbon steel with precision-cut metric threads, the 380902493 plug ensures a perfect fit and reliable sealing performance on GR135, GR165, GR180, GR215, GR260, GR300 and GR350 graders. Whether you need to seal a hydraulic manifold port, a differential housing bore or an unused valve interface, this XCMG plug provides leak-proof protection against dust, water and debris.
The 380902493 plug features a carefully machined hexagonal head for easy installation and removal using standard wrenches. Its zinc‑plated surface with chromate conversion coating delivers outstanding corrosion resistance, maintaining thread integrity even after repeated exposure to salt spray, mud and hydraulic fluids. Each plug is tested for dimensional accuracy, thread class and sealing capability to XCMG’s original specifications, ensuring zero leakage and long service life in heavy‑duty applications.
A missing or damaged plug can lead to expensive hydraulic system failures. By replacing worn plugs with genuine XCMG 380902493, operators restore factory‑level sealing and extend component life. This plug is also used as a dust cap for unused ports during maintenance, keeping internal passages clean. For fleet managers and service workshops, keeping a stock of 380902493 plugs prevents unplanned downtime caused by contaminants entering critical oil circuits.
| Parameter | Specification |
|---|---|
| OEM Number | 380902493 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Port Plug / Thread Protection Plug |
| Thread Size | M22 × 1.5 (Metric Coarse Thread) |
| Thread Type | Male, Parallel (ISO 261 / DIN 13) |
| Head Style | Hexagonal (8 mm A/F – across flats) |
| Material | High-strength carbon steel (C45 / 1045), heat treated |
| Surface Finish | Zinc plating + Yellow chromate (≥480h salt spray) |
| Sealing Mechanism | Bonded washer (NBR rubber) / thread sealant compatible |
| Max Working Pressure (sealing) | 35 MPa (350 bar / 5,075 psi) |
| Temperature Range | -40°C to +130°C (-40°F to +266°F) |
| Corrosion Protection | 500h salt spray (ASTM B117) no red rust |
| Installation Torque (recommended) | 25–30 Nm (18–22 lbf·ft) |
| Overall Length | 18.5 mm ±0.3 mm |
| Head Diameter | 14 mm (hexagon width) |
| Standards Compliance | ISO 9974, DIN 908, SAE J1926 |
| Compatible XCMG Graders | GR135, GR165, GR180, GR215, GR260, GR300, GR350, GR2003 |
| Supersedes Part Numbers | 380901234, 380901890, 380902112, 380902088 |
The 380902493 plug is engineered to seal unused hydraulic ports and access holes on motor grader valve blocks, brake circuits, and steering systems. Contaminants such as sand, water and metal chips can destroy precision hydraulic components. This XCMG plug forms a positive mechanical seal, eliminating ingress of foreign material and ensuring clean oil circulation.
On XCMG GR series graders, typical applications include servo pressure test ports, case drain ports on hydraulic motors, and threaded inspection openings on transmission housings. The 380902493 plug replaces original plugs that have stripped threads or corroded heads, restoring factory sealing without re‑machining the port.
Using a genuine plug guarantees correct thread engagement and eliminates cross‑threading risk. Aftermarket plugs often lack proper hardness or correct thread pitch, leading to leaks or seizure. OEM 380902493 eliminates these problems and maintains equipment reliability.
Each 380902493 plug starts as high-grade carbon steel bar stock, precision turned on CNC lathes to achieve strict ISO tolerance (6g thread class). The rolling process for threads increases fatigue strength by up to 30% compared to cut threads, essential for anti‑vibration performance on graders.
After machining, the plug undergoes alkaline cleaning, zinc plating, and yellow chromate post‑treatment. The resulting finish provides exceptional adhesion and cathodic protection. In salt spray testing per ASTM B117, the 380902493 plug withstands 500 hours without red rust, making it ideal for coastal and de-iced road environments.
The plug’s head is clearly marked with “XCMG” and size identification, ensuring traceability. Every production batch is sampled for torque-to-yield and hydrogen embrittlement relief, guaranteeing safety in high‑pressure hydraulic circuits up to 35 MPa.
Before installing the 380902493 plug, clean the thread port using a lint-free cloth and ensure no old sealant remains. Apply a thin layer of medium-strength thread locker (e.g., Loctite 243) or anti‑seize depending on the application – for hydraulic ports, use hydraulic sealant for leak prevention.
Start threading by hand to avoid cross‑threading. Once hand-tight, use a calibrated torque wrench with a 8 mm hex socket to tighten to 25–30 Nm. Over-torquing can yield the threads or damage the bonded washer; under-torquing leads to loosening under vibration. Re-torque after first 50 operating hours for new installations.
If the plug incorporates a bonded rubber washer, ensure the washer is not cracked or deformed. Replace the washer if necessary. Always use genuine XCMG 380902493 to guarantee correct rubber compound compatibility with mineral oils, synthetic hydraulic fluids, and bio‑oils.
Visible oil seepage around the plug head indicates seal failure. Stripped hex corners make removal difficult – replace immediately. Corrosion pitting on the zinc finish compromises long-term protection. Also, if the plug shows thread galling or deformation, swap with new genuine 380902493 to avoid port damage.
During routine service intervals (every 500 hours), inspect all hydraulic plugs for tightness and corrosion. Replacing a worn plug costs a fraction of rebuilding a contaminated hydraulic pump or valve. Preventive maintenance with OEM parts is the most cost‑effective strategy.
A well‑sealed hydraulic system retains oil cleanliness, which directly extends life of pumps, motors and valves. The 380902493 plug prevents air ingestion and fluid contamination, keeping oil viscosity stable and reducing abrasive wear. For motor graders working in dusty or muddy conditions, this sealing becomes even more critical.
XCMG graders equipped with genuine plugs experience fewer unscheduled repairs. The plug’s robust design withstands daily temperature cycles and high pressure spikes. Downtime due to leaking ports is virtually eliminated, boosting machine availability and owner profitability.
Investing in authentic 380902493 plugs also helps maintain resale value. Prospective buyers prefer equipment that has been maintained with OEM sealing components, as this indicates meticulous care and reduces future repair risks.
The 380902493 plug is stocked in XCMG distribution centers in Houston (USA), Rotterdam (Netherlands), Dubai (UAE) and Shanghai (China). Standard air freight delivers within 2-5 business days worldwide. Express courier (DHL/FedEx) can reach most regions within 1-3 days for urgent repairs.
Bulk orders (100+ pieces) enjoy discounted pricing and sea freight options with full traceability. Each plug is individually packed in anti‑corrosion pouches to protect the zinc finish during storage. Fleets can request automated replenishment programs ensuring you never run out of critical sealing parts.
For OEM workshops and rebuild centers, we offer private labeling and kitting services for the 380902493 plug. Contact our sales team using the buttons above for volume quotes and delivery schedules.
Counterfeit plugs often use low‑grade steel with insufficient hardness, causing thread deformation after a few torque cycles. Their zinc coating is typically thin and fails salt spray testing after 48 hours. Genuine XCMG 380902493 has documented hardness of HRC 22–28 and 500h corrosion resistance.
Aftermarket plugs may skip the chromate conversion process, so they rust rapidly when exposed to road salt or high humidity. This leads to seized plugs that break during removal, requiring port repair or replacement of costly housings. Genuine XCMG plugs guarantee reliable removal even after years of service.
Additionally, every genuine 380902493 plug comes with XCMG’s 12‑month warranty against manufacturing defects. XCMG’s quality management system (ISO 9001:2015 certified) ensures each plug meets original design tolerances. Choose genuine to protect your grader’s hydraulic integrity and lower total cost of ownership.
A missing or faulty plug can cost thousands in hydraulic system flushing and component replacement. Don’t take risks: keep a box of genuine XCMG 380902493 plugs in your maintenance trailer. Use them for every scheduled oil change or whenever you open a hydraulic port for diagnostics. The 380902493 plug ensures you close the system correctly and maintain factory sealing standards.
Practical tip: When removing multiple plugs during service, immediately replace with new 380902493 seals to avoid mixing parts and cross‑threading. Label each port if necessary. With genuine XCMG plugs, you eliminate guesswork and guarantee perfect fitment on all GR series motor graders.
Order the XCMG 380902493 Plug today and ensure every hydraulic opening on your grader is sealed with OEM precision. From the blade lift cylinders to the articulation joint manifold, this small but critical component delivers reliability and peace of mind. Upgrade your stock – choose genuine XCMG.
The 380902493 plug represents XCMG’s commitment to quality and durability. Join thousands of fleet owners who rely on authentic parts for maximum uptime. Request a quote now using the buttons above and experience the difference of genuine engineering.
