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New 2800CC 4JB1 Diesel Engine Assembly 2.8L Complete Assembly Assy 57KW 75HP 4-Stroke Water-Cooled

Wholesale Brand New 4JA1 Naturally Aspirated Diesel Engine Assembly for Isuzu ELF NPR Truck 4 Cylinder 4 Stroke ISUZU 4JA1 Non Turbo Motor for DMAX Pick Up

Brand New Isuzu 4JA1 Engine Assembly is a high-performance, durable 2.5L four-stroke inline diesel engine, designed specifically for light commercial vehicles, pickups, and small trucks. As a classic member of Isuzu’s J-series engine lineup launched in 1985, it adopts a water-cooled, direct injection, and overhead valve (OHV) design, with a displacement of 2499cc (2.5L), bore and stroke of 93mm × 92mm, and a compression ratio of 18.4:1. This engine is widely compatible with Isuzu models including KB250, D-MAX (early generations), TF, Faster, Panther, Hi-Lander, Bison, MU-X, and Elf NHR/NKR, as well as various light trucks and pickups in global markets. It is renowned for its mechanical simplicity, strong reliability, and low maintenance cost, making it an ideal replacement and upgrade choice for commercial vehicle operators, fleet managers, and repair shops, especially in regions with limited electronic diagnostic conditions and spare parts resources.

Model:
4JA1 Non Turbo


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Product Description

Superior Durability & Rugged Construction: Built with a heavy-duty cast iron block and cylinder head, the 4JA1 engine assembly features excellent strength, heat resistance, and wear resistance, ensuring long service life even in high-mileage, heavy-duty, or harsh working environments (such as high temperature, dust, and remote areas). The dry-type cylinder liner and pressurized circulation lubrication system further enhance its durability and reduce wear.
Mechanical Simplicity & Easy Maintenance: Equipped with a mechanical in-line plunger injection pump (Bosch A type) and no complex electronic components, it avoids common electronic failure points, making it easy to diagnose and repair without advanced diagnostic tools. This advantage is particularly valuable for users in rural, remote, or underdeveloped regions where skilled labor and professional maintenance equipment are limited.
Stable Performance & Fuel Efficiency: The 4JA1 engine delivers stable power output, with a natural aspirated version producing 87–90 HP at 4,200 rpm and 172–185 Nm of torque at 2,000 rpm; the turbocharged variant (4JA1-T) increases output to 95–115 HP, providing strong low-to-mid range torque for hauling, towing, and load-carrying needs while maintaining excellent fuel economy, effectively reducing long-term operational costs.
Perfect Compatibility & Direct Replacement: 100% compatible with original Isuzu 4JA1-equipped models, the engine assembly is a direct drop-in replacement with no modifications required, ensuring quick and easy installation, reducing vehicle downtime, and improving work efficiency for users. It strictly follows OE standards and specifications, matching the original engine’s dimensions and mounting points.
Strict Quality Control & Reliable Warranty: Each 4JA1 engine assembly undergoes 100% factory testing (including compression test, leak test, and performance test) before delivery, ensuring zero defects and stable performance straight from the box. We provide a 1-year or 20,000km warranty, with professional after-sales service to solve any product-related issues in a timely manner, giving you full peace of mind.
Cost-Effective & Global Availability: As a high-quality replacement engine, it offers a cost-effective alternative to original Isuzu OE engines (only 1/3–1/2 of the original price) while maintaining equivalent performance and durability. With ISO 9001 and TS 16949 certifications, it is widely exported to Southeast Asia, Africa, the Middle East, Latin America, and other regions, with sufficient stock and fast delivery to meet global buyer needs.

4jb1 engine (5) 4JB1 old version 2

4jb1 engine (3)

Q1: What models are compatible with the 4JA1 engine assembly?

A1: It is fully compatible with Isuzu models including but not limited to Isuzu KB250, D-MAX (early generations), TF, Faster, Panther, Hi-Lander, Bison, MU-X, Elf NHR/NKR, as well as various light pickups and light trucks that use the 4JA1 engine. Please confirm your vehicle’s engine code before purchasing to ensure perfect fitment.

Q2: Is this engine assembly brand new or reconditioned?

A2: All our 4JA1 engine assemblies are 100% brand new, not reconditioned or used. Each unit is manufactured with high-quality materials, strictly tested according to OE standards, and comes with a complete quality assurance certificate. 100% bench tested before delivery.

Q3: What is the displacement and power output of the 4JA1 engine?

A3: The 4JA1 engine has a displacement of 2499cc (2.5L), with a bore of 93mm and stroke of 92mm. The natural aspirated version delivers 87–90 HP at 4,200 rpm and 172–185 Nm of torque at 2,000 rpm; the turbocharged variant (4JA1-T) can reach 95–115 HP depending on tuning and application. And there is the upgraded model 2.8L.

Q4: Does it include all necessary accessories (e.g., injectors, oil pump)?

A4: Yes, the complete engine assembly includes all core components: cylinder block, cylinder head, crankshaft, connecting rod, piston, piston ring, cylinder liner, piston pin, intake/exhaust valve, valve cover, oil pump, water pump, mechanical injection pump, and other essential parts. It is a ready-to-install complete assembly, no additional core parts are needed.

Q5: What is the warranty period, and how to claim the warranty?

A5: We provide a 1-year or 20,000km warranty (whichever comes first) for the 4JA1 engine assembly. If there is any quality problem (non-human damage) during the warranty period, please contact us with your order number, product photos, and fault description. We will provide free replacement parts or repair services according to the fault situation, and bear the relevant shipping costs if necessary.

Q6: What is the delivery time and shipping method?

A6: For small orders (1–5 units), the delivery time is 7–15 working days; for bulk orders (≥10 units), the delivery time is 15–25 working days. We ship globally via sea, air, or express (DHL, FedEx, UPS), and can also ship to your designated overseas warehouse. The shipping cost depends on your destination country, order quantity, and shipping method. We will provide the most cost-effective shipping plan for you.

Q7: Can I get a sample before placing a bulk order?

A8: Yes, we accept sample orders (minimum 1 unit) to help you test the quality and compatibility. The sample delivery time is 7–10 working days, and the sample cost can be deducted from your subsequent bulk order (order quantity ≥10 units).

Q8: What payment terms do you accept?

A9: We accept various international payment terms suitable for Alibaba international station, including T/T (Telegraphic Transfer), L/C (Letter of Credit), Western Union, and Alibaba Trade Assurance. For bulk orders, we can accept 30% advance payment and 70% balance before shipment to ensure the interests of both parties.