The WG2229260012 Cover Plate is a dedicated sealing and protective component for heavy-duty truck transmissions.
It is installed on gearbox side covers, inspection openings, or process holes to provide sealing, dust protection, and structural reinforcement. As a fundamental gearbox housing component, it ensures internal cleanliness, prevents oil leakage, and protects critical transmission parts from contamination and damage.
Installation Position
- Gearbox housing side cover
- Inspection / observation openings
- Process or maintenance access holes
- Fixed by bolts with full surface contact on the housing
Core Functions
- Seals gearbox housing openings to prevent oil leakage
- Blocks dust, mud, metal chips, and external contaminants
- Protects gears, bearings, and synchronizers from damage
- Provides additional structural reinforcement against vibration and impact
Product Advantages
● High-Strength Thickened Steel Construction
Manufactured from thickened cold-rolled steel / low-carbon steel plate (≥2.5mm):
- High rigidity and strong structural strength
- Excellent toughness and impact resistance
- Resistant to deformation under vibration
It ensures long-term durability under harsh operating conditions.
● Excellent Anti-Corrosion Performance
Surface treated with blackening or electrophoresis coating, providing:
- Strong resistance to gearbox oil corrosion
- High temperature resistance (80–120°C working environment)
- Excellent moisture and rust protection
The coating ensures long-term stability without peeling or corrosion.
● One-Piece Stamped Structure
Produced using integrated stamping forming technology:
- No welding or joints
- Uniform structural strength
- Eliminates cracking and leakage risks
This greatly improves reliability and service life.
● Precision Fitment Design
The sealing surface is:
- Flat and smooth for perfect contact
- Precisely matched to gearbox housing contours
- Free of gaps or edge lifting after installation
It ensures reliable sealing performance and prevents leakage or contamination.
● Secure Bolt-Fixed Structure
Designed with 4 precision bolt holes:
- Symmetrical and accurately positioned
- Compatible with OEM bolts
- Strong resistance to vibration and loosening
It ensures stable and long-lasting installation.
● Lightweight & Easy Maintenance Design
Optimized structure provides:
- Reduced overall weight without compromising strength
- Easy installation and removal
- Convenient maintenance access
It improves service efficiency during gearbox repair.
Technical Features
- Material: Cold-rolled steel / low-carbon steel
- Thickness: ≥2.5 mm
- Surface treatment: Blackening / electrophoresis anti-rust
- Structure: One-piece stamped design
- Mounting: 4-bolt fixed structure
- High rigidity and vibration resistance
- Precision sealing surface finishing
Application Scope
- Heavy-duty truck transmissions
- Gearbox housing sealing systems
- Inspection and maintenance openings
- Commercial vehicle driveline systems
- OEM assembly and aftermarket replacement
Performance Benefits
- Prevents oil leakage and contamination
- Enhances gearbox structural integrity
- Improves durability under vibration conditions
- Ensures clean internal transmission environment
- Reduces maintenance and failure risk
Supply & Service
- Ready stock for fast delivery
- OEM customization available
- Stable quality for long-term supply
- Professional technical support provided