Product Overview

This is a premium valve oil seal (valve stem seal) engineered specifically for the Yuchai YC6J125Z-T20 diesel engine. Designed to meet or exceed original equipment specifications, this critical component ensures optimal engine performance by preventing oil from entering the combustion chamber. We supply this part globally to major markets including North America, Europe, the Asia-Pacific region, the Middle East, and Africa, supporting a wide range of industrial and commercial applications.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions (OEM Size) for a perfect fit and reliable performance, ensuring proper oil control and preventing oil consumption.
• Enhanced Durability: Constructed from high-grade materials resistant to heat, oil, and engine chemicals, providing long service life under demanding operating conditions.
• Optimal Engine Performance: Maintains correct lubrication of the valve stem while effectively sealing, contributing to efficient combustion, reduced emissions, and preventing smoke from oil burn-off.
• Versatile Application: Suitable for Yuchai engines used in construction, industrial power generation (gensets), marine propulsion, agriculture, and material handling equipment.
• Quality Assured: Backed by a 6-month warranty and supported by machinery test reports and video outgoing-inspection records for guaranteed quality.

Technical Specifications

OEM Cross-Reference

This part is manufactured as a direct replacement for the original Yuchai valve oil seal used in the YC6J125Z-T20 engine platform. For specific OEM part number confirmation, please contact our technical sales team with your engine serial number. OEM service for custom specifications is available upon request.

Compatibility

Primary Engine Model: Yuchai YC6J125Z-T20 Diesel Engine.

Typical Applications: This valve seal is used in equipment powered by the above engine, including but not limited to:

• Construction: Excavators, loaders, compaction machinery.
• Industry: Stationary power generators (Gensets), pumps.
• Marine: Auxiliary and propulsion engines for workboats.
• Agriculture: Tractors, harvesters, irrigation systems.
• Handling: Forklifts, port cargo handling equipment.

Global Supply & Distribution

We are a professional exporter of heavy-duty engine components with extensive experience in international logistics and trade compliance. We guarantee smooth shipping to all major global markets.

• Worldwide Shipping: Reliable delivery via air and sea freight to destinations worldwide.
• Key Markets Served: We regularly supply to distributors and workshops in North America (USA, Canada, Mexico), the European Union, the United Kingdom, Australia, Southeast Asia, the Middle East (UAE, Saudi Arabia), and South America.
• Efficient Logistics: Fast container and LCL (Less than Container Load) services to major ports and industrial hubs, ensuring timely delivery to keep your operations running.

Quality Assurance

• Manufacturing Standards: Produced in a certified facility using precision tooling to ensure consistent quality and dimensional accuracy.
• Warranty: This product is covered by a 6-month warranty against manufacturing defects from the date of purchase.
• Testing & Inspection: Each batch undergoes rigorous quality checks. A machinery test report and video outgoing-inspection are provided to verify product integrity and performance standards before shipment.

FAQ

Q1: How do I confirm this valve oil seal is the correct part for my specific Yuchai engine?
A: While this seal is designed for the YC6J125Z-T20 model, we strongly recommend cross-referencing your engine’s serial number and the existing seal’s dimensions. Please provide any numbers from the old seal or your engine plate, and our technical team can confirm compatibility.

Q2: What is the recommended procedure for installing these valve stem seals?
A: Professional installation is recommended. The cylinder head should be disassembled, and the old seals carefully removed. New seals must be installed squarely onto the valve guides using the proper tooling to avoid damage. Always inspect valve stems and guides for wear during this service.

Q3: Do you offer support for large-volume orders for an engine overhaul project?
A: Yes, we specialize in supplying complete engine overhaul kits and bulk quantities for workshops and fleet operators. Contact us directly for volume pricing, customized packaging, and consolidated shipping to your location.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .