OEM Engine Piston 8-94340-620-2 8943406202 8-97176-602-0 For ISUZU 4JB1T 2.8L Turbo Diesel — 93mm STD Alfin Reinforced With Pin & Clips
Basic Properties
Place of Origin:
China
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
ISUZU 4JB1T 2.8L
Trading Properties
Minimum Order Quantity:
4 pcs
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
4000 pcs/month
Specifications
| OEM Part Number: | 8-94340620-2 / 8943406202 / 8-94340-620-2 | Part Name: | Piston / Engine Piston |
| Bore Diameter: | 93 Mm (STD) | Piston Length: | 91.8 – 92 Mm |
| Compression Height: | 52 Mm | Pin Diameter: | 34 Mm |
| Engine Compatibility: | ISUZU 4JB1T, 4JB1-TC, 4JB1-TCH, 4JB1-TCL | Vehicle Compatibility: | ISUZU Bighorn, Mu, Wizard, Rodeo, Trooper, TFR/TFS Pickup |
| Production Years: | 1987–2006+ | Condition: | Brand New — 100% Quality Inspected |
| Warranty: | 12 Months | Pin Length: | 78 Mm |
| Ring Groove Size: | 2.0 × 2.0 × 4.0 Mm (Top / 2nd / Oil) | Combustion Bowl Depth: | 13.7 Mm |
| Piston Weight: | Approx. 1.2 Kg (per Piston) | Material: | High-Grade Aluminum Alloy |
| Surface Treatment: | Tin Plated | ||
| High Light: | Isuzu 4JB1T diesel engine piston,93mm STD Alfin reinforced piston,OEM engine piston with pin clips |
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Product Description
OEM Engine Piston 8-94340-620-2 8943406202 8-97176-602-0 For ISUZU 4JB1T 2.8L Turbo Diesel — 93mm STD Alfin Reinforced With Pin & Clips
Engine Piston 8-94340620-2 8943406202 for ISUZU 4JB1T 2.8L — OEM 93mm STD Alfin Insert
Product Overview
The Engine Piston with OEM numbers 8-94340620-2 (also listed as 8943406202, 8-94340-620-2, 8-97176-602-0) is a verified OEM-grade direct replacement for ISUZU 4JB1T 2.8L turbo-diesel engines. As a critical component of the engine's combustion system, this precision-engineered piston transmits combustion force to the connecting rod, seals the combustion chamber, and manages heat transfer to the cylinder walls.
Manufactured to ISUZU's stringent OEM specifications, this piston features an Alfin insert for enhanced ring groove durability and a tin-plated surface for superior scuff resistance during break-in. The 4JB1T engine is a legendary 2.8L turbo-diesel powerplant found in a vast range of ISUZU commercial vehicles, pickup trucks, and SUVs globally.
- OEM Specification — Verified by ISUZU OEM part numbers 8-94340-620-2, 8943406202, 8-97176-602-0, and 8-94369-218-0
- Precision 93mm STD Dimensions — 93mm bore diameter, 91.8mm-92mm length, 52mm compression height, 34mm pin diameter, 78mm pin length
- Alfin Reinforcement — Features an Alfin insert (austenitic cast iron ring carrier) in the top ring groove for exceptional durability
- Tin-Plated Surface — Provides excellent scuff resistance during engine break-in and enhanced corrosion protection
- Proven Durability — Constructed from high-grade aluminum alloy with Invar strut for controlled thermal expansion
- Complete Assembly — Supplied with piston pin and circlips for direct installation
- OEM Cross-Reference Verified — Interchangeable with MAHLE 629 12 00, N ÜRAL 87-248000-30, TEIKIN 39188A, and IZUMI piston sets
Failure Symptoms
If your engine piston is failing, you may experience one or more of the following symptoms:
- Engine Knocking Noise: A deep, metallic knocking or rattling sound from the engine block, especially under load
- Excessive Oil Consumption: Noticeable drop in oil level between service intervals
- Blue Exhaust Smoke: Bluish smoke from the exhaust, especially during acceleration
- Loss of Engine Power: Significant reduction in power and acceleration
- Engine Misfire: Rough running or misfiring
- Metal Shavings in Oil: Visible metallic particles in the engine oil during servicing
- Cylinder Wall Scoring: Vertical scratches on cylinder walls
⚠️ A failing piston is a critical engine failure risk — it can lead to catastrophic engine damage including cracked pistons, bent connecting rods, and cylinder wall destruction. Prompt replacement with quality OEM pistons is essential for engine reliability.
| Part Number | 8-94340-620-2 8943406202 8-97176-602-0 |
|---|---|
| Product Name | Piston |
| Car Model | ISUZU |
| Engine Model | ISUZU 4JB1T |
| Condition | 100% Brand New |
| Size | Standard |
| Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe |
| Material | High-strength aluminum alloy & precision bearings |
| Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
Vehicle & Engine Compatibility
⚠️ CRITICAL: This piston is designed for ISUZU 4JB1T 2.8L turbo-diesel engines. Verify your engine code and bore size before ordering.
Primary Applications
| Brand | Model | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | Bighorn | UBS | 4JB1T 2.8 TD | 1987-1991 |
| ISUZU | Mu / Wizard | -- | 4JB1T 2.8 TD | 1989-1998 |
| ISUZU | Rodeo | TF | 4JB1T 2.8 TD | 1988-2002 |
| ISUZU | Trooper | UBS | 4JB1T 2.8 TD | 1987-1991 |
| ISUZU | Pickup | TFR/TFS | 4JB1T 2.8 TD | 1988-2005 |
| ISUZU | NKR | N-Series | 4JB1T | 1988-2005 |
| ISUZU | NPR | N-Series | 4JB1T | 1988-2005 |
| ISUZU | Elf | N-Series | 4JB1T | 1988-2005 |
Engine Specifications (4JB1T)
| Specification | Detail |
|---|---|
| Engine Type | In-line, 4-cylinder, Direct Injection, Turbocharged, Water-Cooled |
| Displacement | 2.771 L (2,771 cc) |
| Bore × Stroke | 93 mm × 102 mm |
| Power Output | 68-85 kW (92-116 HP) @ 3,600 rpm |
| Peak Torque | 230-290 N*m @ 1,600-1,900 rpm |
| Idle Speed | 750 ± 25 rpm |
| Max Speed | 3,350 ± 100 rpm |
Features & Benefits
OEM Specification — ISUZU Genuine Equivalent
Guarantees factory-fit quality and performance — verified by ISUZU OEM part numbers
Alfin Insert Reinforcement
Provides exceptional durability in the top ring groove, resisting wear under high combustion pressures
Invar Strut Design
Controls thermal expansion for consistent piston-to-cylinder clearance across operating temperatures
Tin-Plated Surface
Delivers superior scuff resistance during engine break-in and enhanced corrosion protection
Precision 93mm STD Bore
Matches the 4JB1T cylinder bore for correct fitment and compression
Complete with Pin & Clips
Supplied ready for installation — includes piston pin and circlips
Broad Compatibility
Fits ISUZU Bighorn, Mu, Wizard, Rodeo, Trooper, TFR/TFS, NKR, NPR, and Elf
100% New — No Core Charge
Guarantees zero wear, immediate engine performance, and full service life
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 93mm bore diameter, 52mm compression height, 34mm pin diameter match OE specifications |
| Material Composition | High-grade aluminum alloy analysis to verify structural integrity and thermal properties |
| Alfin Insert Integrity | Bond strength testing between Alfin insert and aluminum piston body |
| Ring Groove Inspection | Precision measurement of 2.0 × 2.0 × 4.0mm ring grooves for correct ring fitment |
| Surface Finish Test | Tin coating thickness and adhesion verification for scuff resistance |
| Weight Matching | Precision weighing to ensure balanced sets (±2g tolerance) |
| Durability Cycle Test | 500+ hour thermal cycling and pressure testing to verify 300,000+ km service life |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Highly Recommended
Engine piston replacement requires specialized tools, precision measurement equipment, and expert knowledge of engine assembly.
Engine piston replacement requires specialized tools, precision measurement equipment, and expert knowledge of engine assembly.
Pre-Installation Checklist
- Quantity Required: 4 pistons per engine — always replace in complete sets
- Measure cylinder bore for wear, taper, and out-of-round — hone or rebore if necessary
- Verify piston protrusion at TDC for each cylinder — determines correct head gasket thickness
- Check piston-to-bore clearance per ISUZU workshop manual specifications
- Inspect connecting rods for bend, twist, and small end bushing wear — replace if necessary
- Use new piston rings — never reuse old rings on new pistons
- Verify ring end gap in the cylinder bore before installation — file-fit if necessary
- Clean all components thoroughly before assembly — any debris can cause premature failure
Maintenance Schedule
- Inspection: During major engine overhauls (every 300,000-500,000 km)
- Replacement: Recommended during engine rebuilds or immediately if failure symptoms appear
- Note: Always use clean, high-quality engine oil and replace the oil filter regularly
Packaging & Supply
- Packaging: Each piston is securely packed in a protective box with anti-rust coating
- Pack Quantity: 1 PC (sold individually) or 4 PCS (complete set)
- Net Weight: Approx. 1.2 kg per piston
- Suitable for: Wholesale distributors, engine rebuild shops, truck repair facilities, and fleet owners
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