The WG2229240142 Oil Guide Tube is a precision hydraulic oil transmission component designed for heavy-duty truck gearboxes.
It is responsible for accurately delivering hydraulic oil inside the transmission system, ensuring stable pressure, smooth shifting response, and reliable lubrication performance. As a key OEM-grade part, it plays a vital role in maintaining gearbox efficiency and preventing oil leakage issues.
Key Function
- Precisely delivers hydraulic oil within transmission system
- Maintains stable hydraulic pressure for shifting operation
- Ensures continuous lubrication of gearbox components
- Prevents oil leakage and pressure loss
Product Advantages
● High-Strength Seamless Steel Construction
Manufactured from 20Cr / 45# high-strength seamless steel tube, the oil pipe features:
- Tensile strength ≥ 600 MPa
- Pressure resistance ≥ 35 MPa
- Excellent impact and vibration resistance
It is designed to withstand high-pressure hydraulic shock without cracking or deformation.
● Excellent Heat & Oil Resistance
The inner wall is treated with phosphating + passivation coating, providing:
- Strong resistance to hydraulic oil corrosion
- Stable performance at 80–120°C working temperature
- Long-term anti-aging and anti-rust protection
It ensures durability in harsh transmission environments.
● Precision Sealing Design
Both ends are equipped with precision trapezoidal threads (6H tolerance):
- Perfect fit with OEM sealing washers
- Strong anti-loosening and anti-leakage performance
- Dual sealing structure with copper gasket compatibility
This effectively eliminates hydraulic oil leakage risks.
● Smooth Internal Flow Channel
The inner surface is highly polished and burr-free:
- No flow restriction or bottleneck
- Stable hydraulic oil delivery
- Improved pressure transmission efficiency
This ensures fast and accurate shifting response.
● Reinforced Structural Design
The pipe body features a thickened reinforced structure (≥3mm wall thickness):
- Strong vibration absorption capability
- Anti-resonance and anti-cracking design
- Extended service life under continuous operation
It is suitable for heavy-duty and high-frequency working conditions.
● OEM-Style Accurate Fitment
Designed with precise bending and positioning:
- Fully matches gearbox internal oil routing
- No interference during installation
- Stable and reliable assembly performance
Technical Features
- Material: 20Cr / 45# seamless steel tube
- Heat treatment: Quenching + tempering
- Surface treatment: Phosphating + passivation anti-rust
- Pressure resistance: ≥35 MPa
- Wall thickness: ≥3 mm reinforced design
- Thread standard: 6H precision trapezoidal thread
- High internal surface finish for smooth flow
Application Scope
- Heavy-duty truck transmissions
- Hydraulic oil distribution systems
- Gearbox lubrication systems
- Commercial vehicle driveline systems
- OEM assembly and aftermarket replacement
Performance Benefits
- Stable hydraulic oil pressure delivery
- Improved shifting response and accuracy
- Eliminates oil leakage problems
- Enhances gearbox lubrication efficiency
- Extends service life of transmission components
Supply & Service
- Ready stock for fast delivery
- OEM customization supported
- Stable quality for long-term supply
- Professional technical support provided