Product Overview

This is a brand new, genuine Isuzu 4JJ1 complete engine assembly, manufactured to the highest OEM standards in Japan. Designed for direct replacement and heavy-duty applications, this integrated unit is supplied ready for installation. We specialize in global B2B distribution, serving major markets across North America, Europe, Asia-Pacific, the Middle East, and Africa with reliable shipping and export compliance.

Key Features & Benefits

• 100% Genuine OEM Quality: Manufactured by Isuzu or authorized suppliers, ensuring perfect fit, performance, and longevity.
• Complete & Integrated Assembly: Supplied as a fully assembled unit, reducing installation time and complexity for workshops and rebuilders.
• Premium Japanese Engineering: Built with high-grade materials and precision manufacturing for superior durability and fuel efficiency.
• Direct Replacement Solution: Eliminates the need for sourcing individual components, providing a guaranteed-compatible powerplant.
• Optimized for Heavy-Duty Use: Designed to meet the rigorous demands of commercial vehicles, industrial machinery, and generator sets.

Technical Specifications

OEM Cross-Reference

Primary Part Number: GJ-4JJ1XKSC-01

This complete assembly is the direct OEM replacement. Please verify this part number against your specific application requirements. Alternative assembly codes may exist based on specific vehicle or equipment configurations.

Compatibility

This genuine 4JJ1 engine assembly is designed as a direct replacement for a wide range of Isuzu applications, including:

• Vehicle Models: Isuzu D-Max, Isuzu MU-X, Isuzu NPR, NQR, NRR series trucks.
• Equipment Applications: Industrial generators, construction machinery, and marine auxiliary power units utilizing the 4JJ1 platform.
• Model Years: Compatible with model years utilizing the 4JJ1-TC engine. Specific fitment should be confirmed by the chassis/VIN or equipment model number.

Global Supply & Distribution

We are a trusted supplier for international distributors, workshops, and fleet operators. Our logistics network ensures efficient delivery to major global hubs.

• Worldwide Shipping: We export via air and sea freight to all major continents and markets.
• Key Markets Served: North America (USA, Canada, Mexico), Europe (UK, Germany, Benelux), Asia-Pacific (Australia, Southeast Asia), Middle East (UAE, Saudi Arabia), and Africa.
• Fast Port Delivery: Priority handling to major ports like Rotterdam, Los Angeles, Singapore, Dubai, and Sydney.
• Export Expertise: Full documentation support (Commercial Invoice, Packing List, Certificate of Origin) and compliance with international trade regulations for seamless customs clearance.

Quality Assurance

• OEM Manufacturing Standards: Produced following original Isuzu specifications and tolerances.
• Rigorous Testing: Each assembly undergoes comprehensive performance and leak-down testing prior to shipment.
• Warranty: Backed by a standard international warranty covering manufacturing defects. Specific terms provided with the commercial invoice.
• Certification: Supplied with manufacturer documentation verifying its origin and specifications.

FAQ

Q: Is this engine assembly a direct “drop-in” replacement for my vehicle?
A: Yes, this GJ-4JJ1XKSC-01 assembly is designed as a complete long block replacement. However, we strongly recommend confirming compatibility using your vehicle’s VIN or existing engine serial number, as ancillary components (manifolds, turbo, etc.) may need to be transferred from your old engine.

Q: What is included in the “Complete Engine Assembly”?
A: Typically, a complete assembly includes the engine block, cylinder head, crankshaft, pistons, connecting rods, camshaft, and timing gearset—essentially a fully assembled short or long block. It generally does not include external accessories like the alternator, starter motor, fuel injection pump, or turbocharger unless specified otherwise.

Q: What are the lead time and shipping terms for international orders?
A: Lead times vary based on destination and shipping method (air or sea). We quote CIF (Cost, Insurance, and Freight) or FOB (Free On Board) terms to major ports worldwide. Specific delivery estimates and Incoterms will be provided with your formal quotation.

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 .