Product Features

• Structure: A multi-layer steel (MLS) gasket with a coating of high-temperature resistant rubber, designed to seal the cylinder, coolant passages, and oil galleries. It features precision-cut holes for alignment with engine components.

• Performance: The MLS construction provides excellent resistance to combustion pressure and thermal cycling, maintaining a reliable seal even under extreme engine loads. The rubber coating enhances sealing against coolant and oil leakage.

• Design: Engineered for precise fit and alignment, with locating pins to ensure correct positioning during installation.

Core Function

• Seals the interface between the cylinder head and cylinder block to prevent leakage of combustion gases, coolant, and engine oil.

• Withstands the high pressure and temperature of the combustion process, ensuring efficient engine performance and preventing damage from leaks.

• Maintains the integrity of the engine’s cooling and lubrication systems, supporting stable operation in heavy-duty conditions.

Cylinder Head Gasket VG1246040021 SINOTRUK – OEM Quality, Factory Direct Price

When your SINOTRUK engine demands a perfect seal between the cylinder head and engine block, the Cylinder Head Gasket VG1246040021 delivers uncompromising performance. Engineered to OEM specifications for SINOTRUK D12 series engines, this gasket withstands extreme combustion pressures, high temperatures, and aggressive coolant chemistry — ensuring zero leakage across thousands of operating hours. Sourced directly from our factory supply chain, it reaches your warehouse faster and at a price that strengthens your bottom line.

Key Features & Benefits of Cylinder Head Gasket VG1246040021

Precision Sealing Performance

The VG1246040021 cylinder head gasket is manufactured using multi-layer steel (MLS) construction with elastomer coating, providing superior sealing against combustion gases, engine oil, and coolant under extreme thermal cycling conditions. Each gasket is engineered to maintain consistent clamping force distribution across the entire mating surface.

Benefits for Your Fleet Operations

• Extended Engine Life: Prevents coolant-to-oil contamination and combustion gas leakage that cause premature engine failure.
• Reduced Downtime: OEM-grade fitment means no rework during installation — your trucks return to service faster.
• Cost Efficiency: Factory-direct pricing eliminates middleman markups without sacrificing quality assurance.
• Thermal Stability: Withstands sustained operating temperatures exceeding 800°C at the combustion seal area.
• Chemical Resistance: Resists degradation from modern long-life coolants and synthetic engine oils.

Application & Vehicle Compatibility

Compatible Vehicle Models

The Cylinder Head Gasket VG1246040021 is designed specifically for SINOTRUK vehicles equipped with the D12 series engine platform:

• SINOTRUK HOWO A7 – Heavy-duty tractor and dump truck configurations
• SINOTRUK HOWO T7H – Long-haul logistics and heavy transport
• SINOTRUK SITRAK C7H – Premium heavy-duty truck series
• SINOTRUK HOWO 371/375/380HP – Mining and construction applications
• SINOTRUK HOWO Dump Trucks – Off-road and quarry operations

System Application

This cylinder head gasket functions as the critical sealing component within the engine top-end assembly. It sits between the cylinder head and engine block, performing three simultaneous sealing functions:

1. Combustion Seal: Contains high-pressure combustion gases (up to 150 bar peak pressure) within each cylinder bore.
2. Coolant Seal: Prevents coolant passage leakage into cylinders or oil galleries.
3. Oil Seal: Isolates lubrication oil channels from coolant passages and combustion chambers.

Technical Specifications – VG1246040021

OEM/ODM Capability & Custom Packaging

JINAN METTLEAD AUTO SALES CO., LTD. supports flexible procurement models tailored to your business needs:

• White-Label Packaging: We supply the Cylinder Head Gasket VG1246040021 in neutral packaging, ready for your own brand labeling — ideal for distributors building regional brand equity.
• Custom Packaging: Your logo, part number cross-reference, and branding printed directly on packaging materials for a professional end-user experience.
• Strict Quality Control: Every batch undergoes dimensional inspection, material composition verification, and surface finish testing before shipment.
• Bulk Order Flexibility: Whether you need 50 pieces or 5,000 pieces, our supply chain scales to match your demand cycles.
• Cross-Reference Support: We help you match aftermarket part numbers to OEM equivalents, reducing procurement errors.

Explore our full range of SINOTRUK HOWO Engine Parts to consolidate your orders and reduce shipping costs.

Frequently Asked Questions – Cylinder Head Gasket VG1246040021

What causes a cylinder head gasket to fail on SINOTRUK D12 engines?

The most common causes of cylinder head gasket failure on D12 engines include engine overheating (often from coolant system neglect), improper torque sequence during installation, warped cylinder head surfaces exceeding 0.05 mm flatness tolerance, and using non-OEM gaskets with incorrect thickness or material composition. The VG1246040021 gasket is engineered to tolerate the thermal and mechanical stresses specific to this engine platform.

How do I verify that VG1246040021 is the correct part number for my engine?

Cross-reference the part number stamped on your existing gasket or check the engine nameplate for the D12 series designation. The VG1246040021 fits D12 engines commonly found in HOWO A7, T7H, and SITRAK C7H models. If you are uncertain, send us your engine serial number and VIN — our technical team will confirm compatibility within 24 hours.

Can this cylinder head gasket be reused after removal?

No. Multi-layer steel gaskets like the VG1246040021 are designed for single-use installation only. Once the elastomer coating has been compressed and heat-cycled, it cannot re-establish a reliable seal. Always install a new gasket during any cylinder head service procedure.

What is the recommended torque specification for installation?

Follow the SINOTRUK D12 workshop manual torque sequence: typically a multi-step tightening process reaching a final torque of 280–320 Nm plus an angular tightening step. Proper torque sequence ensures even clamping load distribution across all cylinder bores, which is critical for gasket longevity.

What is the minimum order quantity and lead time?

We offer flexible MOQ starting from as low as 1 piece for sample orders. Standard bulk orders ship within 3–7 working days from our Jinan warehouse. For large-volume procurement, we recommend placing orders 2–3 weeks ahead to ensure uninterrupted supply to your workshop or distribution network.

Ready to Secure Your Supply of Cylinder Head Gasket VG1246040021?

Stop losing time to unreliable suppliers and inflated pricing. JINAN METTLEAD AUTO SALES CO., LTD. delivers genuine-quality SINOTRUK cylinder head gaskets directly from China’s manufacturing base — with the technical support, competitive pricing, and fast logistics your business depends on.

Get your quotation today:

• Send us your required quantity and delivery destination
• Receive a detailed quotation within 12 hours
• Enjoy factory-direct pricing with flexible, secure payment options

👉 Contact Us Now to Request a Quote — our team is ready to support your procurement needs with professional service and fast response.

JINAN METTLEAD AUTO SALES CO., LTD. — Your trusted source for SINOTRUK, HOWO, SITRAK, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON truck parts worldwide.