Oem 8-97108-622-2 Diesel Engine Piston Kit 4jb1 4jb1-t For Isuzu Nkr Nhr Truck Bobcat Loader 93mm

Product Details

Product Overview

This high-quality Diesel Engine Piston Kit (OEM 8-97108-622-2 / 8971086222) is specifically engineered for the Isuzu 4JB1 and 4JB1-T engine series. Designed to restore original compression and power output, this piston kit is a direct replacement component commonly used in Isuzu light-duty trucks (NKR, NHR, Elf, TFR) as well as Bobcat and ASV compact loader models.

The kit features a 93.0mm standard (STD) bore diameter with a 31.0mm x 76.0mm piston pin, ensuring precise geometric compatibility with the 4JB1 engine block. Manufactured under strict quality control, this piston is suitable for both naturally aspirated (4JB1) and turbocharged (4JB1-T) variants, making it a versatile solution for engine rebuilders and fleet maintenance operations.

As a critical internal engine component, this piston is produced to meet or exceed OEM specifications, providing reliable performance in demanding work environments such as construction sites, agricultural operations, and urban delivery fleets.

Key Features & Benefits

• OEM-Grade Fitment: Direct replacement for Isuzu part numbers 8-97108-622-2 and 8971086222, ensuring drop-in installation without modification.
• Precision Engineering: Standard 93.0mm bore with 31.0mm pin diameter guarantees proper cylinder wall clearance and ring seal.
• Turbo-Compatible: Suitable for both 4JB1 (naturally aspirated) and 4JB1-T (turbocharged) engine configurations.
• Durable Construction: Made from high-strength aluminum alloy with reinforced crown for resistance to thermal stress and mechanical fatigue.
• Complete Kit: Includes piston with piston pin and retaining clips; compatible with standard 4JB1 piston rings (sold separately or as part of a full kit).
• Application Versatility: Covers Isuzu light trucks (NKR, NHR, TFR) and compact loaders (Bobcat, ASV), reducing inventory complexity.
• Quality Assurance: Factory-tested with outgoing video inspection and machinery test report available upon request.

Technical Specifications

OEM Cross-Reference

This piston kit is a direct replacement for the following OEM and interchange numbers. Verify your existing part number for compatibility:

• Primary OEM: 8-97108-622-2, 8971086222
• Alternative OEM: 8-97176-606-0, 8-97176-607-0
• Engine Codes: 4JB1, 4JB1-T, 4JB1-PK

Note: Always confirm the piston crown profile and pin height against your original component before ordering.

Compatibility

This piston kit is commonly used for the following applications:

• Engine Models: Isuzu 4JB1, 4JB1-T (Turbo), 4JB1-PK
• Isuzu Vehicles: Light Truck series (Elf, NKR, NHR, TFR)
• Compact Loaders: Bobcat models utilizing the 4JB1 engine, ASV loaders with Isuzu power units

Important Fitment Note: Fitment is based on engine model and OEM part number cross-reference. Due to variations in vehicle chassis and loader model years, we recommend verifying the cylinder bore condition and piston pin fitment before purchase.

Global Supply & Distribution

We provide worldwide shipping from our distribution hub in Guangdong, China, with reliable logistics partners ensuring timely delivery. Our export network covers:

• North America: Regular shipments to USA, Canada, and Mexico ports (Los Angeles, Houston, Vancouver).
• Europe: Fast delivery to Rotterdam, Hamburg, and major industrial centers in Germany, UK, and France.
• Asia-Pacific: Direct service to Japan, Australia, South Korea, and Southeast Asian markets.
• Middle East & Africa: Established routes to UAE, Saudi Arabia, South Africa, and Nigeria.
• South America: Regular exports to Brazil, Argentina, and Chile.

We handle export documentation, customs clearance support, and offer flexible shipping options (sea freight, air freight, express courier). Bulk orders for fleet maintenance and engine rebuild shops are welcome.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities with precision machining tolerances.
• Testing: Each batch undergoes dimensional inspection and material composition verification. Video outgoing inspection and machinery test reports are available upon request.
• Warranty: 6-month warranty for general use; 12-month warranty available for verified commercial applications.
• Packaging: Securely packed in neutral boxes or custom-branded packaging to prevent damage during transit.

FAQ

Q1: Is this piston compatible with the Isuzu 4JB1-T turbocharged engine?
Yes, this piston is designed for both the naturally aspirated 4JB1 and the turbocharged 4JB1-T variants. The 93.0mm standard bore and 31.0mm pin dimensions are identical across these engine codes. However, always compare the piston crown shape and compression height with your original part to confirm compatibility for turbo applications.

Q2: Can I use this piston with oversize rings or aftermarket liners?
This piston is supplied in standard (STD) size (93.0mm bore). It is intended for use with standard-size piston rings and standard cylinder bores. If your engine requires oversize components (e.g., 0.50mm or 1.00mm overbore), please contact us for the correct oversize piston options. Do not use STD pistons in rebored cylinders without proper sizing.

Q3: What is the recommended installation procedure for this piston?
We recommend the following steps: (1) Clean the cylinder bore thoroughly and measure for roundness and taper. (2) Lubricate the piston pin and install it with the retaining clips, ensuring proper orientation. (3) Use a quality piston ring compressor to install the piston and ring assembly into the bore. (4) Torque connecting rod bolts to the manufacturer’s specification (typically 40–50 Nm for 4JB1). (5) After installation, rotate the crankshaft by hand to ensure free movement before starting the engine.