The genuine XCMG 380900888 Fitting Body is a precision‑machined hydraulic connector used in motor grader steering, brake and implement circuits.
This OEM 380900888 fitting body is manufactured from high‑strength forged steel with a corrosion‑resistant zinc‑nickel finish.
It features a JIC 37° flare seat and an ORFS (O‑ring face seal) port, ensuring leak‑free connections in high‑vibration environments.
Engineered for XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders, this fitting body withstands working pressures up to 35 MPa (5,000 psi).
The fitting body connects hydraulic hoses, tubes, and components such as valves, cylinders, and pumps. A damaged or corroded fitting causes fluid leaks, pressure loss, and system inefficiency.
Replacing a faulty fitting with genuine XCMG 380900888 restores original sealing integrity and eliminates external weeping.
This fitting is also used in transmission cooling lines, articulation steering circuits, and brake valve blocks. XCMG 380900888 guarantees OE thread dimensions, flatness, and long‑term reliability.
| Parameter | Specification |
|---|---|
| OEM Number | 380900888 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Fitting Body / Connector Block |
| Material | Forged carbon steel (42CrMo4 / AISI 4140) |
| Port 1 Type | JIC 37° flare female, 1-1/16-12 UN |
| Port 2 Type | ORFS male, M22×1.5 metric |
| Maximum Working Pressure | 35 MPa (5,000 psi) |
| Burst Pressure (min) | 140 MPa (20,000 psi) |
| Temperature Range | -40°C to +130°C (-40°F to +266°F) |
| Surface Finish | Zinc‑nickel plating (480h salt spray) + yellow chromate |
| Hex Size (Wrench) | 36 mm |
| Seal Compatibility | Nitrile O‑rings, copper gaskets, or bonded seals |
| Standards | SAE J514, ISO 8434‑2, DIN 2353 |
| Fluid Compatibility | Mineral oils, synthetic hydraulic fluids, water‑glycol, diesel fuel |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 |
| Superseded Part Numbers | 380900871, 380900885, 380900890 |
The 380900888 fitting body serves as a junction point between hydraulic hoses and rigid tubes in the grader’s steering and brake systems.
Its precisely machined sealing seats ensure metal‑to‑metal or O‑ring contact, preventing oil leakage under fluctuating pressure.
A fitting with damaged threads or seat surfaces will weep oil, leading to slow pressure loss, spongy brakes, or steering hesitation.
Replacing a corroded or cracked fitting body with genuine XCMG 380900888 restores full hydraulic integrity and eliminates external drips.
This component is commonly found on pump delivery lines, cylinder ports, and valve block interfaces. Proper fitting torque is essential for reliable sealing.
Each 380900888 fitting body is hot‑forged from 42CrMo4 steel, which provides high tensile strength and fatigue resistance.
After forging, the part is normalized to relieve internal stresses. CNC machining then creates the JIC flare seat, ORFS groove, and all threads to ISO tolerance.
The zinc‑nickel plating (12‑15 micron) with yellow chromate topcoat withstands 480 hours of salt spray, protecting against road salt and moisture.
XCMG inspects every fitting body with go/no‑go thread gauges and a profilometer to ensure seat roughness below Ra 0.8 µm.
Sample fittings are subjected to 1.5× working pressure (52.5 MPa) for 60 seconds with zero leakage required.
Before installing the new 380900888 fitting body, clean the mating ports and inspect for burrs or old sealant residue.
Apply a small amount of clean hydraulic oil to the threads and O‑ring (if ORFS). Hand‑thread the fitting into the port until finger‑tight.
Torque JIC connections to 65 Nm (for -12 size) and ORFS connections to 50 Nm using a crowfoot wrench and torque wrench. Do not overtighten.
After torquing, pressurize the system to operating pressure and inspect for leaks. If a slight weep is seen, tighten an additional 5° – no more.
Never reuse old fitting bodies – they may have work‑hardened or developed micro‑cracks. Always install a new genuine XCMG 380900888.
Visible hydraulic fluid weeping from the fitting, rust or pitting on the hex flats, thread damage (cross‑threading or galling), and cracks around the seat area.
Also replace if the fitting has been overtightened in the past, causing the flare seat to deform. A leaking fitting wastes oil and can cause environmental violations.
Inspect all hydraulic fittings every 500 operating hours. Look for leaks, corrosion, or loosening. Retorque if necessary, but do not exceed original torque.
A properly installed fitting body should last the lifetime of the machine, except when damaged by external impact or corrosion in harsh environments.
In salt‑spray regions or wet climates, inspect more frequently. If the zinc plating is worn through, apply a rust inhibitor or replace the fitting.
When disassembling hydraulic lines for component replacement, always install new seals (O‑rings, backup rings) and check the fitting body’s seat for damage.
Genuine XCMG 380900888 fitting bodies are backed by a 12‑month warranty against material and manufacturing defects.
Regional distribution centers: Houston (USA), Rotterdam (Netherlands), Dubai (UAE), and Shanghai (China) maintain deep stock of this critical fitting.
Standard air freight delivers within 3‑7 business days worldwide. Emergency 24‑48 hour shipping available for urgent hydraulic repairs.
Bulk orders (20+ fittings) receive volume discounts and sea freight options for fleet maintenance programs.
Aftermarket fittings often use mild steel that corrodes rapidly, have inaccurate thread angles, and lack proper heat treatment. Genuine XCMG 380900888 ensures correct hardness and dimensional accuracy.
Don’t risk a hydraulic leak that could lead to loss of steering or brakes. Keep spare fitting bodies in your parts inventory for rapid field replacement.
Order the genuine XCMG 380900888 Fitting Body today and maintain leak‑free, safe hydraulic performance for thousands of operating hours.
Upgrade your motor grader’s hydraulic connection reliability with XCMG genuine fitting bodies – forged, precision machined, and corrosion‑protected.
