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Product Details
Product Overview
This high-quality replacement piston, identified by OEM part number 490B-04001B (also known as 490BPG-04001), is a critical component specifically designed for the Xinchai 490BPG, C490BPG, and 4D27G31 series diesel engines. Manufactured to standard (STD) specifications with a 90mm diameter, this piston ensures a precise fit for optimal compression and engine performance.
Primarily engineered for material handling equipment, this piston is commonly used in popular forklift models from leading Chinese manufacturers including Heli, Hangcha, JAC, and Lonking, typically found in 2-ton to 3.5-ton capacity machines. As a direct replacement for the original Xinchai component, it offers a reliable solution for engine overhauls and maintenance repairs in the field.
Key Features & Benefits
Precise OEM Fitment: Manufactured to the exact specifications of the original Xinchai 490B-04001B part, ensuring a seamless, drop-in replacement without modification.
Standard Size (STD) Accuracy: This piston is supplied at STD size (90mm diameter), providing the correct clearance and ring fit for engines that have not been previously overbored.
Durable Aluminum Alloy Construction: Crafted from high-strength aluminum alloy, this piston offers excellent heat dissipation, reduced weight, and superior wear resistance for extended service life.
Enhanced Engine Performance: Designed to restore compression and reduce blow-by, helping your forklift engine regain lost power and improve fuel efficiency.
Rigorous Quality Control: Each piston undergoes strict dimensional checks and material analysis to ensure it meets or exceeds OE standards for reliability.
Versatile Application: Ideal for a wide range of 2-3.5 ton forklifts from Heli, Hangcha, JAC, and Lonking, making it a versatile stock item for repair shops and parts distributors.
Technical Specifications
Specification
Detail
Part Number (OEM)
490B-04001B / 490BPG-04001
Engine Model
Xinchai 490BPG / C490BPG / 4D27G31
Product Name
Forklift Engine Piston
Type
Diesel Engine Cylinder Piston
Material
Aluminum Alloy
Size
Standard (STD) / 90mm Diameter
Weight
4 kg
Engine Type
Diesel
Warranty
6 Months (Up to 1 Year Available)
Place of Origin
Guangdong, China
Packing
Neutral / Original Box / Non-Fumigation Wooden Box
OEM Cross-Reference
This replacement piston directly cross-references to the following original equipment manufacturer (OEM) part numbers:
Xinchai: 490B-04001B
Xinchai: 490BPG-04001
Note: This part is a direct replacement for the original Xinchai components listed above. Always verify the engine model and existing part number before ordering.
Compatibility
This piston is specifically designed for the following applications and should be verified against your engine’s specifications:
Engine Models: Xinchai 490BPG, C490BPG, 4D27G31
Forklift Applications (commonly used for):
Heli Forklift (2T – 3.5T models)
Hangcha Forklift (2T – 3.5T models)
JAC Forklift (2T – 3.5T models)
Lonking Forklift (2T – 3.5T models)
Industry Suitability: Machinery Repair Shops, Retail, Construction Works, Forklift Maintenance Depots
Fitment is inferred based on common OEM configurations. Please confirm your engine model and piston size before purchasing.
Global Supply & Distribution
We offer reliable worldwide shipping for this Xinchai 490BPG piston, supporting both urgent air freight and cost-effective sea freight options. Our inventory is strategically managed to ensure fast dispatch to major ports and industrial hubs.
Major Markets Served:
North America: USA, Canada, Mexico
Europe: Germany, France, UK, Italy, Netherlands
Asia-Pacific: China, Japan, South Korea, Australia, Southeast Asia
Middle East & Africa: UAE, Saudi Arabia, South Africa, Egypt
South America: Brazil, Argentina, Chile
With extensive export experience, we provide professional documentation, including commercial invoices, packing lists, and certificates of origin, ensuring smooth customs clearance for our international B2B clients.
Quality Assurance
Our diesel engine pistons are manufactured in ISO-certified facilities in Guangdong, China, adhering to strict international quality standards. We prioritize precision and durability in every component.
Manufacturing Standards: Produced using advanced casting and machining processes for dimensional accuracy.
Testing: Each batch undergoes machinery test reports and video outgoing inspection to verify quality.
Warranty: Backed by a standard 6-month warranty against manufacturing defects, with options for extended coverage up to 1 year available upon request.
FAQ
Q1: Is this piston a direct replacement for the original Xinchai 490BPG engine part? Yes, this piston (part number 490B-04001B) is manufactured as a direct replacement for the original Xinchai component used in the 490BPG, C490BPG, and 4D27G31 engine models. It is supplied at STD (standard) size to match factory specifications.
Q2: What tools are required for installation, and are there any critical steps? Installation requires standard engine overhaul tools, including a piston ring compressor, torque wrench, and feeler gauges for ring end-gap measurement. It is critical to check the piston-to-cylinder wall clearance and ensure all rings are correctly oriented before assembly. We recommend consulting your engine service manual for specific torque values and procedures.
Q3: How should I store this piston if I am not installing it immediately? Store the piston in a clean, dry environment away from moisture and corrosive chemicals. Keep it in its original packaging to prevent scratches or damage to the pin bore and ring grooves. For long-term storage, apply a light coat of anti-rust oil to the piston surface.
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