Product Features

• Structure: Forged from high-temperature resistant alloy steel, with a disc-shaped head, precision-machined stem, and a groove at the tail for retaining valve locks. The stem features a wear-resistant coating.

• Performance: The alloy steel material withstands temperatures exceeding 1100°C, while the wear-resistant coating reduces friction between the stem and valve guide, ensuring long-term durability. The precision-machined head provides a tight seal with the valve seat.

• Design: Optimized geometry and surface finish ensure reliable sealing and minimal gas leakage, even under extreme thermal and mechanical stress.

Core Function

• Controls the opening and closing of the exhaust port, allowing exhaust gases to exit the cylinder during the exhaust stroke.

• Seals the combustion chamber during the compression and power strokes, preventing high-pressure gas leakage.

• Withstands the intense heat of exhaust gases and high-frequency reciprocating motion, maintaining engine efficiency and performance.

Engine Exhaust Valve VG1246050022 – Genuine SINOTRUK Replacement Part

When your SINOTRUK engine demands peak exhaust flow efficiency and long-lasting valve seat integrity, the Engine Exhaust Valve VG1246050022 delivers exactly that. Engineered to meet OEM specifications for SINOTRUK WD615/WD618 and Euro III/IV engine platforms, this exhaust valve withstands extreme combustion temperatures exceeding 800°C while maintaining precise sealing performance across millions of duty cycles. Sourced directly from our factory supply chain, it reaches your warehouse faster and at a more competitive price than traditional distribution channels.

Key Features & Benefits of Engine Exhaust Valve VG1246050022

• OEM-Grade Material Composition – Manufactured from high-temperature martensitic steel (21-4N / 23-8N equivalent) that resists thermal fatigue, oxidation, and valve recession under sustained heavy-duty operation.
• Precision-Ground Sealing Face – The 45° valve face angle is ground to a surface finish of Ra 0.4μm or better, ensuring gas-tight combustion chamber sealing and preventing exhaust blow-by.
• Hardened Valve Tip – Stellite-tipped or induction-hardened stem end withstands repetitive rocker arm contact, extending service intervals beyond 300,000 km under normal operating conditions.
• Exact Dimensional Compliance – Every valve is manufactured to SINOTRUK OEM tolerances (stem diameter ±0.01mm), guaranteeing drop-in fitment with no guide reaming or seat machining required.
• Strict Quality Control – 100% dimensional inspection plus metallurgical batch testing ensures zero-defect delivery to your inventory.
• Cost-Effective Factory Direct Pricing – Eliminating middlemen means you receive genuine-quality parts at wholesale pricing that protects your margins.

Technical Specifications – VG1246050022 Engine Exhaust Valve

Application & Vehicle Fitment

The Engine Exhaust Valve VG1246050022 is designed to serve the demanding duty cycles found across SINOTRUK’s heavy-duty truck lineup. Whether your fleet operates in long-haul logistics, mining haulage, or construction site transport, this valve performs reliably under continuous high-load conditions.

Compatible Vehicle Models

• SINOTRUK HOWO A7 – 6×4 tractor units and dump trucks equipped with WD615 engines
• SINOTRUK HOWO T7H – Premium logistics tractors with D12 series powertrains
• SINOTRUK SITRAK C7H – High-horsepower long-haul configurations
• SINOTRUK HOWO Mining Trucks – 70T/80T off-road dump trucks operating in extreme dust and heat environments
• SINOTRUK Concrete Mixers & Pump Trucks – Urban construction vehicles requiring frequent stop-start thermal cycling endurance

If your fleet runs any SINOTRUK WD615/WD618/D12 engine variant, this exhaust valve is your direct replacement solution. Browse our full range of SINOTRUK Truck Parts for complementary engine components including intake valves, valve guides, valve seats, and cylinder head gaskets.

OEM/ODM Capability & Custom Packaging

We understand that distributors and fleet operators across Africa, the Middle East, Southeast Asia, and South America have unique branding and packaging requirements. Our factory-direct model gives you the flexibility to tailor every shipment to your market.

• White-Label Packaging – Receive parts in neutral boxes ready for your own brand stickers or labels.
• Custom Branded Packaging – Full-color printed boxes with your company logo, part numbers, and barcodes — minimum order quantities apply.
• Bulk & Assortment Packing – Mixed SKU pallets organized by engine model for efficient warehouse receiving.
• Quality Documentation – Material certificates, dimensional inspection reports, and packing lists accompany every shipment upon request.

Every exhaust valve leaves our facility only after passing dimensional gauging, hardness verification, and visual inspection — because a single valve failure can sideline an entire truck and cost your customer thousands in downtime.

Frequently Asked Questions – Engine Exhaust Valve VG1246050022

What material is the VG1246050022 exhaust valve made from?

This engine exhaust valve is manufactured from 21-4N austenitic heat-resistant steel, which offers superior resistance to high-temperature oxidation and thermal fatigue. The valve tip is additionally hardened to ≥50 HRC to withstand repetitive mechanical contact from the rocker arm assembly.

How do I verify that VG1246050022 fits my engine?

VG1246050022 is the OEM part number assigned by SINOTRUK for exhaust valves used in WD615, WD618, and D12 series engines. Confirm your engine model on the nameplate, then cross-reference the part number in your engine’s parts catalog. The valve dimensions (42mm head, 9mm stem, 147mm length) should match your existing valve exactly.

What causes premature exhaust valve failure in SINOTRUK engines?

Common causes include carbon buildup preventing full valve closure, incorrect valve lash adjustment leading to overheating, poor fuel quality causing excessive combustion deposits, and using non-OEM valves with inferior metallurgy that cannot handle sustained temperatures above 800°C. Always replace exhaust valves with OEM-spec parts like VG1246050022 to avoid premature burnout.

Should I replace valve seals and guides at the same time?

Yes. When replacing the engine exhaust valve VG1246050022, best practice dictates inspecting and replacing valve stem seals and checking guide clearance. Worn guides cause lateral valve movement that accelerates seat wear and leads to exhaust leakage. We supply complete valve train kits for WD615/WD618 engines.

Can I order VG1246050022 in small quantities for testing?

Absolutely. We offer flexible minimum order quantities so you can evaluate part quality before committing to bulk orders. Trial orders ship within 3–5 working days from our warehouse.

Ready to Secure Your Supply of Engine Exhaust Valve VG1246050022?

Stop losing time to unreliable sourcing channels. Get factory-direct pricing, verified OEM-quality, and fast delivery on the Engine Exhaust Valve VG1246050022 SINOTRUK — plus thousands of other SINOTRUK, HOWO, SITRAK, SHACMAN, FAW, and WEICHAI parts ready to ship.

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to request a quote, confirm stock availability, or discuss custom packaging for your market. Our team responds within 12 hours — because your fleet cannot afford to wait.