Audited Supplier
3066sk Diesel Engine Cylinder Head Assembly for 7N8876 Excavator C6121 Replacement.
Engineered to protect critical engine components from harsh environmental conditions while optimizing thermal management, noise reduction, and service accessibility for construction machinery. Combines rugged durability with precision engineering to ensure reliable performance in demanding job sites.
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| Parameter | Details |
| Applicable Machinery | Excavators, bulldozers, wheel loaders, motor graders, backhoes, and crawler tractors |
| Material | Q345B high-strength low-alloy steel (tensile strength ≥470 MPa) with anti-corrosive powder coating |
| Surface Treatment | 3-layer coating system: Epoxy primer (50μm) + polyester topcoat (80μm) + clear protective layer |
| Ingress Protection | IP67 (dust-tight and water-resistant up to 1m immersion for 30 minutes) |
| Operating Temperature | -40°C to +80°C (withstand extreme cold/heat cycles) |
| Ventilation Design | Louvered air intakes (5-15% surface area ratio) with anti-debris mesh |
| Noise Reduction | Integral acoustic insulation (10-15 dB noise reduction at 1m distance) |
| Weight | 80-200 kg (depending on machinery model, 15% lighter than cast-iron alternatives) |
| OEM Compatibility | Designed for Caterpillar, Komatsu, Volvo CE, John Deere, Liebherr, XCMG, and Sany models |
1. Extreme-Duty Structural Design
- High-Impact Resistance: 3mm thick steel panels with reinforced ribbing (tested to 500J impact energy per ISO 6603-2).
- Corrosion Protection: Powder coating passes 1,000-hour salt spray test (ASTM B117), ideal for coastal, mining, and high-humidity environments.
- Fire Retardancy: Optional ceramic thermal barrier coating (CTBC) for engines operating near heat sources (e.g., asphalt pavers).
2. Optimized Thermal Management
- Dual-Airflow System: Front-mounted intake louvers and rear exhaust vents create natural convection, reducing engine bay temperature by 15-20°C.
- Heat-Resistant Seals: Silicone rubber gaskets (service temperature -50°C to +200°C) prevent hot air recirculation.
- Thermal Expansion Compensation: Floating hinge design allows 3mm linear expansion without stress fractures.
3. Serviceability & Safety
- Gas Spring Assisted Opening: 90° stay-open mechanism for easy access to engine components (reduces maintenance time by 30%).
- Anti-Slam Mechanism: Hydraulic dampers ensure controlled closing speed (<0.5m/s), preventing operator injury.
- EMC Compliance: Conductive coating reduces electromagnetic interference (tested to CISPR 25 Class 5).
4. Precision Fit & Universal Adaptability
- OEM-Level Tolerances: ±1mm dimensional accuracy (ISO 2768-mK) for seamless integration with factory mounting points.
- Retrofit Solutions: Adjustable mounting brackets for legacy machinery (1990+ models) with optional adapter kits.
- Customization Options: Available in standard RAL colors or OEM-specific paint codes (minimum order quantity: 50 units).
5. Advanced Sealing Technology
- Triple-Lip Seal Design: Prevents ingress of dust (≤5μm particles), water jets (IP69K compliant), and lubricant leaks.
- Positive Latching System: Stainless steel latches with 100N closing force (tested to 100,000 cycle operations).
We also supply G.E.T parts, Undercarriage parts , rubber tracks, buckets and the attachment, wide range of engine parts.What you need, What you supply!
Packing: We can do Paper carton, plywood case, woven Bag, wide different way of packin gaccording to your request
Shipping: By truck, by train, by sea, by air all shipping ways can be choose. Flexible and diverse transportation methods can meet the various needs of customers
We are carrying SS and 6-Sigma management. We also acquired 1509001 and CE certification.
