612600050073 Intake Valve & 612600050025 Exhaust Valve

612600050073 intake valve and 612600050025 exhaust valve are core valve train components for Weichai WD615 and WP10 series diesel engines. Used as a matching set, they control air intake and exhaust gas circulation inside the engine. The intake valve draws fresh air for fuel combustion, while the exhaust valve expels high-temperature burnt gas. During long-term operation, they endure continuous high-temperature gas erosion, frequent mechanical impact and corrosive exhaust fumes, which directly affect engine power output, fuel consumption, air tightness and overall service life.

Low-cost ordinary valves made of common carbon steel show poor heat and wear resistance. Under heavy-duty loads, they easily suffer valve head burning, stem abrasion and air leakage. These defects lead to weak engine power, higher fuel cost and black exhaust smoke. In severe cases, the cylinder will be damaged and cause costly engine overhaul. Our 612600050073 / 612600050025 engine valves are forged from high-temperature resistant 21-4N heat-resistant alloy steel. The exhaust valve head is overlaid with wear-resistant alloy via plasma surfacing technology. They feature high structural strength, excellent oxidation resistance, anti-corrosion performance and extended service life. Produced strictly according to OEM drawings, cone angles and stem tolerances, they fit original engines directly without grinding or modification, suitable for long-distance transportation, heavy mining and non-stop construction working conditions.

612600050073

612600050025

Weichai WD615, WP10, WD618 diesel engines

Sinotruk Howo, Shacman, Steyr heavy trucks, 5-ton wheel loaders, mining dump trucks, diesel generator sets

21-4N heat-resistant alloy steel, exhaust valve head with plasma hardfacing alloy

Integral forging, CNC precision grinding, high-precision cone surface polishing, anti-rust passivation treatment

Resist temperature up to 900℃, anti-exhaust corrosion, anti-burning and deformation, stable long-term sealing

OEM standard size with high cone sealing precision, direct on-site replacement without secondary processing

Stabilize engine power output, cut fuel consumption, reduce black smoke emission and extend engine overhaul cycle

• Long-Distance Freight Heavy Trucks: 6*4 Sinotruk Howo & Shacman tractors for full-load highway transportation with long high-speed operation;
• Mining Transportation: Mining dump trucks and muck haulers working on steep slopes with heavy loads and dusty environments;
• Construction Machinery Job Sites: 5-ton wheel loaders, motor graders and road rollers for earthmoving and sand transportation with day-night continuous operation;
• Fixed Generator Units: Weichai WP10 diesel generators for factory backup power and outdoor engineering fixed power supply;
• Overseas Parts Trade: Standard wear spare parts for global auto repair shops, machinery spare parts wholesalers and equipment rental companies.

• MOQ: 1 set (6 intake valves + 6 exhaust valves) is acceptable. Sample orders, small restock orders and full container bulk orders are supported for overseas repair shops, truck distributors and construction equipment leasing companies.
• Export Packaging: Standard neutral export package. Each valve is wrapped with anti-rust oil paper and separated by plastic dividers to avoid collision, packed into inner boxes and thick 5-layer export cartons. Custom color boxes with customer logos, OEM labeling and English user manuals are available. Moisture-proof and rust-proof design fits long-distance sea, air and land transportation worldwide.
• Lead Time: 1-3 working days for in-stock items; 3-5 working days for small orders under 500 sets; 7-15 working days for full container bulk orders. Priority production for urgent maintenance orders from overseas construction and mining sites.
• Certifications: ISO9001 quality management system certified. 100% full inspection before shipment, including dimension test, cone sealing test, high-temperature durability test and hardness impact test to eliminate defective products.
• Payment Terms: T/T, L/C, , PayPal and other secure global international payment methods.
• Warranty: 12 months factory warranty. Free replacement for quality defects such as burning and abnormal wear under standard installation and normal working conditions (excluding man-made damage).
• Supply Capacity: Sufficient permanent stock and stable monthly output. Long-term supply for overseas bulk orders and OEM supporting orders for complete vehicle matching.

HES Co., Ltd is a company specializing in engineering machinery parts and Sinotruk Shacman truck components. Over the years since its establishment, the company has maintained excellent collaborations with multiple manufacturers such as XCMG, SDLG, Sinotruk, and Shacman. Adhering to the principles of "Quality First, Customer Supremacy, Credibility, and Win-Win Cooperation," we are committed to sincerely cooperating with all clients and pursuing mutual development.