Product Overview
This JMF29 Hydraulic Cylinder Block (Part Number: 31M8-10140) is a precision-engineered core component designed for heavy-duty diesel engines. Manufactured to exacting OEM specifications, it serves as a critical replacement part for a wide range of industrial and mobile machinery. We supply this part globally, with established logistics to major markets including North America, Europe, the Asia-Pacific region, and the Middle East, ensuring reliable support for your operations.
Key Features & Benefits
- Premium Durability: Manufactured from high-grade materials to withstand extreme pressures and thermal cycles, ensuring long service life and reduced downtime.
- Precision Engineering: Machined to exact OEM dimensions (OEM Size) for a perfect fit and optimal engine performance, maintaining compression and oil integrity.
- Versatile Application: Designed for use across multiple sectors including construction, agriculture, power generation, marine, and material handling.
- Rigorous Quality Control: Each unit undergoes thorough inspection, supported by machinery test reports and video outgoing-inspection documentation for verified quality.
- Global Compliance Ready: Packaged for international shipping and trade, facilitating smooth import to your destination country.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 31M8-10140 |
| Engine Model | JMF29 |
| Type | Hydraulic Cylinder Block |
| Engine Type | Diesel |
| Weight | 3.5 kg |
| Size | OEM Standard Size |
| Packing | Plastic Bag, Box, Carton |
| Selling Units | Single Item |
| Place of Origin | Guangdong, China |
OEM Cross-Reference
This part is manufactured as a direct replacement for the OEM part number 31M8-10140. It is designed to be interchangeable with the genuine component, ensuring compatibility and performance. Please verify this number against your engine’s documentation or old part for confirmation.
Compatibility
This hydraulic cylinder block is specifically engineered for diesel engines bearing the JMF29 model designation. Its primary applications include:
- Construction Machinery: Excavators, loaders, bulldozers.
- Industrial Power Units: Stationary engines for factories and plants.
- Agricultural Equipment: Tractors, combines, and irrigation pumps.
- Power Generation (Genset): Diesel generator sets for prime or standby power.
- Marine Engines: Auxiliary and propulsion engines for vessels.
- Material Handling: Forklifts and port equipment.
Global Supply & Distribution
We are a professional exporter of heavy-duty engine components with extensive experience in international B2B trade. Our supply chain is optimized for global reach:
- Worldwide Shipping: We ship to all major industrial regions via air, sea, and express courier.
- Key Markets Served: Reliable supply to the USA, Canada, Germany, UK, Australia, Japan, UAE, Saudi Arabia, and Southeast Asia.
- Fast Delivery Network: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, and Dubai, with efficient inland forwarding.
- Trade Compliance: All documentation (commercial invoice, packing list, certificate of origin) is provided to ensure smooth customs clearance.
Quality Assurance
We stand behind the quality and reliability of every part we supply.
- Manufacturing Standard: Produced in ISO-certified facilities using advanced CNC machining and quality materials.
- Comprehensive Warranty: Backed by a 6-month warranty against manufacturing defects.
- Verification & Testing: Each block is subject to dimensional checks, pressure testing, and a final inspection. A machinery test report and video record of the outgoing inspection are available upon request.
FAQ
Q: How do I confirm this part is compatible with my specific engine?
A: The primary identifier is the part number 31M8-10140. Please cross-reference this number with your engine’s service manual or the original part removed from your JMF29 engine. The engine model must be JMF29 for guaranteed fitment.
Q: What documentation is provided with the shipment?
A> For B2B orders, we provide full commercial export documentation, including a proforma/commercial invoice, packing list, and a certificate of origin. Technical documents like the machinery test report can be included digitally or physically upon request.
Q: What are the installation prerequisites for this cylinder block?
A> Professional installation by a qualified mechanic is required. Ensure the engine crankcase is thoroughly cleaned and inspected for damage before installation. Always use new gaskets, seals, and follow the engine manufacturer’s specified torque sequences and values for all fasteners.
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 .