YC4D120-21 Cylinder Liner for Yuchai Engine – Excavator, Forklift, Truck, Loader

Product Details

Product Overview

This high-quality YC4D120-21 Cylinder Liner is a direct replacement component specifically designed for the Yuchai YC4D120-21 diesel engine. As a critical wear part within the engine block, this liner provides the precise cylindrical surface required for optimal piston ring sealing and combustion efficiency.

Crafted to OEM size specifications, this cylinder liner ensures a perfect fit and reliable performance in a wide range of heavy machinery. It is commonly used in applications such as excavators, forklifts, trucks, loaders, bulldozers, and buses, making it a versatile solution for fleet maintenance and engine overhauls.

Whether you are a parts distributor, a repair shop, or an equipment operator, this HDPARTS-branded cylinder liner offers a dependable, cost-effective alternative to genuine Yuchai parts without compromising on quality or dimensional accuracy.

Key Features & Benefits

• OEM Standard Dimensions: Manufactured to exact OEM specifications for a direct, hassle-free installation without the need for modifications.
• Enhanced Durability: Constructed from high-grade cast iron to withstand extreme heat, pressure, and friction, ensuring a long service life.
• Superior Surface Finish: Precision-honed cylinder bore for optimal oil retention and reduced piston ring wear, improving engine efficiency.
• Perfect Fit Confidence: Specifically engineered for the Yuchai YC4D120-21 engine model, eliminating guesswork and reducing downtime.
• Rigorous Quality Testing: Each unit undergoes a machinery test report and video outgoing inspection to guarantee performance and reliability.
• Versatile Application: Suitable for multiple heavy equipment types, including excavators, loaders, forklifts, and trucks, simplifying your inventory management.
• Secure Packaging: Shipped in secure plastic bags, boxes, and cartons to prevent damage during transit.

Technical Specifications

OEM Cross-Reference

This cylinder liner is a direct replacement for the following OEM and aftermarket part numbers:

• Yuchai OEM: YC4D120-21
• Compatible Models: Designed specifically for the Yuchai YC4D engine series with the 120-21 specification.

Note: For specific cross-reference numbers from other manufacturers (e.g., Cummins, Perkins), please contact our sales team with your original part number for verification.

Compatibility

This cylinder liner is commonly used for the following applications and equipment:

• Engine: Yuchai YC4D120-21 (Diesel)
• Equipment Types:
  • Excavators
  • Forklifts
  • Trucks
  • Wheel Loaders
  • Bulldozers
  • Buses

Important Fitment Note: While this part is designed for the listed engine model, always verify your engine’s specific serial number and existing cylinder liner dimensions before purchase to ensure compatibility.

Global Supply & Distribution

We are an experienced exporter based in Guangdong, China, with a robust global supply chain capable of shipping to major industrial centers worldwide. Our distribution network ensures fast and reliable delivery to key markets including:

• North America: USA, Canada, Mexico
• Europe: Germany, UK, Netherlands, Poland, France
• Asia-Pacific: Australia, Japan, South Korea, Singapore, Indonesia
• Middle East & Africa: UAE, Saudi Arabia, South Africa, Nigeria
• South America: Brazil, Chile, Argentina

We offer flexible shipping options via sea, air, or express courier (DHL, FedEx, UPS) to meet your delivery timeline and budget. All shipments are professionally packed and insured to ensure they arrive in perfect condition.

Quality Assurance

Quality is paramount in our manufacturing process. This cylinder liner is produced in an ISO-certified facility, ensuring strict adherence to international quality standards.

• Manufacturing Standards: Produced to meet or exceed OEM specifications.
• Testing: Each batch undergoes a Machinery Test Report to verify dimensional accuracy and material integrity. A Video Outgoing Inspection is available upon request for full transparency.
• Warranty: Backed by a 6-month warranty against manufacturing defects, providing you with peace of mind.

FAQ

Q: Is this cylinder liner a direct fit for my Yuchai YC4D120-21 engine?
A: Yes, this cylinder liner is manufactured to OEM size specifications specifically for the Yuchai YC4D120-21 diesel engine. It is designed as a direct replacement. However, we always recommend comparing the dimensions (height, outer diameter, inner diameter) with your original part before installation to account for any engine block wear or modifications.

Q: What is the recommended installation procedure?
A: Proper installation is critical for engine performance. We recommend the following steps: 1) Thoroughly clean the engine block cylinder bore. 2) If using a dry liner, gently press it into place using a suitable tool; avoid hammering directly. 3) After installation, check the liner protrusion above the block deck to ensure it is within the engine manufacturer’s specification. 4) Always use new piston rings and a quality assembly lubricant. For complex rebuilds, consult a professional diesel mechanic.

Q: How should I store this cylinder liner if I am not installing it immediately?
A: To prevent corrosion and maintain surface integrity, store the cylinder liner in its original packaging in a clean, dry environment. Keep it away from moisture, direct sunlight, and extreme temperature fluctuations. If the liner is stored for an extended period (over 6 months), apply a light coat of anti-rust oil to the bore surface before storage.