Product Overview

This high-precision fuel injector copper sleeve is engineered for Mitsubishi 4D33, 4D34, and 4D35 series diesel engines. Designed to OEM specifications (Part No. 11070-Z5514), it ensures a perfect seal between the fuel injector and the cylinder head, preventing leaks and maintaining optimal combustion pressure. We supply this critical component to a global network of distributors, engine rebuilders, and heavy equipment service centers across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions and tolerances for a guaranteed fit and optimal sealing performance.
• Premium Material: Constructed from high-grade, thermally conductive copper alloy for excellent heat dissipation and resistance to corrosion.
• Enhanced Durability: Ensures long service life by preventing fuel and compression leaks, protecting the injector seat and cylinder head.
• Improved Engine Performance: Maintains correct cylinder compression and prevents fuel dilution of engine oil, contributing to reliable power output and fuel efficiency.
• Global Compliance: Suitable for worldwide applications in construction, industrial, agricultural, and marine sectors.

Technical Specifications

OEM Cross-Reference

Primary OEM Number: 11070-Z5514

This part is a direct replacement for the genuine Mitsubishi component. Always verify the part number from your original injector sleeve or engine manual before ordering.

Compatibility

This injector sleeve is specifically designed for Mitsubishi industrial diesel engines. Common applications include:

• Engine Models: Mitsubishi 4D33, 4D34, 4D35 series diesel engines.
• Industry Applications:
  • Construction Machinery (Excavators, Loaders)
  • Industrial Generators (Gensets)
  • Agricultural Equipment (Tractors, Pumps)
  • Marine Auxiliary Engines
  • Material Handling Equipment

Global Supply & Distribution

We are a professional exporter of heavy-duty engine components with extensive experience in international logistics and trade compliance. Our supply chain is optimized for fast, reliable delivery to key global markets.

• Worldwide Shipping: We ship via air and sea to all major industrial regions.
• Key Markets Served: North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands), Middle East (UAE, Saudi Arabia), Asia-Pacific (Australia, Singapore, Japan), and South America.
• Efficient Logistics: Consolidated shipments to major ports and hubs ensure cost-effective and timely delivery for bulk orders.
• Export Documentation: Full commercial invoice, packing list, and certificate of origin provided. We comply with international export regulations.

Quality Assurance

• Manufacturing Standard: Produced in ISO-certified facilities using precision machining for consistent quality.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Testing & Inspection: Each batch undergoes rigorous quality checks. A Machinery Test Report is available upon request. Video outgoing-inspection can be provided for quality verification.
• OEM Service: We offer OEM manufacturing services, capable of producing according to customer-provided drawings and specifications.

FAQ

Q1: How do I know if my Mitsubishi engine needs a new injector copper sleeve?
A1: Common signs include visible fuel leaks around the injector base, black carbon buildup on the injector tip, loss of engine power, rough idle, or increased oil level (from fuel dilution). A compression test can also indicate a leaking seal.

Q2: Is special tooling required for installation?
A2: Yes, proper installation is critical. Typically, a specialized puller tool is needed to remove the old sleeve, and a driver tool is used to install the new one to the correct depth without damaging it. We recommend consulting the engine service manual for the specific procedure.

Q3: Can this part be used in engines other than the listed 4D33/34/35 models?
A3: No. This sleeve is engineered specifically for the bore and taper of the Mitsubishi 4D33, 4D34, and 4D35 cylinder heads. Using it in an incompatible engine will result in poor sealing and potential engine damage. Always cross-reference the OEM part number (11070-Z5514) for confirmation.

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 .