Oem 8-97305-585-3 Diesel Engine Piston Assy 8973055853 Standard Size 95.4mm For Isuzu 4jh1 4jh1-tc

Product Details

Product Overview

This high-quality OEM replacement diesel engine piston assembly, identified by part numbers 8-97305-585-3 and 8973055853, is manufactured to standard (STD) size specifications with a bore diameter of 95.4mm. Designed specifically for the Isuzu 4JH1 and 4JH1-TC engine platforms, this component is a critical fitment for popular commercial and utility vehicles including the Isuzu D-Max, NKR77, ELF, and NPR series.

As a direct replacement for the original equipment piston, this assembly ensures proper compression ratios and combustion chamber geometry are maintained. The piston is supplied complete with the wrist pin (31.00mm diameter), ready for installation in your engine rebuild or repair project. Whether you are servicing a light truck, delivery van, or diesel utility vehicle, this piston assembly offers reliable performance for demanding B2B applications.

Key Features & Benefits

• OEM-Grade Precision: Manufactured to match the exact specifications of the original Isuzu piston, ensuring proper fitment and engine balance without modification.
• Standard Size (STD) Availability: This 95.4mm bore diameter piston is ideal for engines still within factory tolerances, eliminating the need for cylinder boring in many rebuild scenarios.
• Verified Part Number Cross-Reference: Confirmed compatibility with OEM numbers 8-97305-585-3, 8973055853, and 8-97305-586-1, providing high confidence for procurement professionals.
• Durable Construction: Built from high-strength alloy materials to withstand the thermal and mechanical stresses of turbocharged diesel operation in the 4JH1-TC engine.
• Complete Assembly: Includes the piston body and 31.00mm wrist pin, reducing the number of individual components needed for your engine overhaul kit.
• Rigorous Quality Control: Each piston undergoes dimensional inspection and material verification before shipping, supporting consistent performance across multiple units.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct replacement for the following original equipment manufacturer numbers. Always verify your existing part number before ordering:

• Isuzu OEM: 8-97305-585-3
• Isuzu OEM: 8973055853
• Isuzu OEM: 8-97305-586-1

Note: While 8-97305-585-3 and 8973055853 are numerically identical, both formats are provided for cross-referencing in different catalog systems. The 8-97305-586-1 variant may be used in superseded or alternative production runs.

Compatibility

This piston assembly is commonly used for the following engine and vehicle applications. Always confirm engine model and piston size before purchase.

• Engine Models: Isuzu 4JH1 (naturally aspirated), Isuzu 4JH1-TC (turbocharged)
• Vehicle Applications: Isuzu D-Max, Isuzu NKR77, Isuzu ELF (N-Series), Isuzu NPR

Fitment is inferred based on OEM part number cross-references. Year ranges are not specified; consult your vehicle’s service manual or engine serial number for definitive compatibility.

Global Supply & Distribution

We maintain robust export capabilities to serve the international B2B market. Our logistics network supports efficient delivery to major industrial centers worldwide, including:

• North America: Regular shipments to Los Angeles, Houston, New York, Toronto, and Vancouver.
• Europe: Fast transit to Rotterdam, Hamburg, Antwerp, and Felixstowe.
• Asia-Pacific: Direct service to Singapore, Sydney, Tokyo, and Busan.
• Middle East & Africa: Established routes to Dubai, Jeddah, and Durban.

We offer flexible shipping options including sea freight (FCL/LCL), air express (DHL, FedEx, UPS), and rail consolidation for landlocked markets. All shipments are professionally packed with export-grade materials to prevent damage during transit. Our team manages all customs documentation and provides full traceability from warehouse to destination.

Quality Assurance

Every piston assembly is manufactured in ISO-compliant facilities in Guangdong, China, with strict adherence to dimensional tolerances and material specifications. Key quality measures include:

• Incoming Inspection: Raw materials are tested for chemical composition and mechanical properties.
• In-Process QC: Dimensional checks using CMM (Coordinate Measuring Machine) equipment at each production stage.
• Final Testing: Each piston is visually inspected and measured for pin bore alignment, ring groove depth, and overall concentricity.
• Warranty Coverage: Backed by a 6-month warranty for standard applications and up to 12 months for verified commercial fleet installations.
• Machinery Test Report & Video Inspection: Available upon request for bulk or critical orders.

FAQ

Q1: How do I confirm this piston fits my Isuzu 4JH1 engine?
A: Verify your engine’s model code (located on the engine data plate or stamped on the block). Ensure it reads “4JH1” or “4JH1-TC”. Then measure your current piston’s bore diameter—it must be 95.40mm (standard size). If your engine has been previously rebored, this STD piston will not fit. Cross-reference your old part number with 8-97305-585-3 or 8973055853 for additional confirmation.

Q2: Can I install this piston without replacing the piston rings?
A: No. Piston rings are wear items that must be replaced whenever the piston is removed. This assembly includes the piston body and wrist pin only. We recommend ordering a matching piston ring set (sold separately) designed for the 4JH1/4JH1-TC engine with a 95.4mm bore. Always install new rings to ensure proper compression and oil control.

Q3: What maintenance should I perform during piston installation?
A: Before installation, thoroughly clean the cylinder bore and check for any ridge at the top of the cylinder. Lubricate the piston skirt, wrist pin, and connecting rod bearing with clean engine oil. Use a ring compressor to install the piston assembly gently into the bore—never force it. Torque the connecting rod bolts to the manufacturer’s specification (typically 49–55 Nm for 4JH1 engines) and verify piston protrusion height if required by your rebuild procedure.