ISUZU Standard Piston Ring Set 85mm Bore for 4LE1 4LE2 Engines ISO/TS16949 Certified
| Material: | High-quality Metal | Net Weight: | 0.06 Kg |
| Ring Set Configuration: | 2 × 1.75 × 4 Mm | Bore Size: | 85mm |
| Compatible Engines: | ISUZU 4LE1, 4LE2, 4LB1, 4LC1 | Size Type: | STD (Standard Size) |
| Installation Position: | Piston Ring Grooves / Cylinder Wall | OEM Part Number: | 8-97141208-0 / 8971412080 |
| High Light: | 85mm Bore Piston Ring Set,ISO/TS16949 Certified Engine Piston Ring Set,Compatible with 4LE1 4LE2 RING SET; PISTON,STANDARD |
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ISUZU Standard Piston Ring Set with OEM numbers 8-97141208-0 / 8971412080 is a precision-engineered replacement designed for ISUZU 4LE1 series diesel engines, widely used in ISUZU XD vehicles and Hitachi, JCB construction equipment. This product is a core component for engine overhaul — responsible for sealing the gap between the piston and cylinder wall, controlling oil consumption, and ensuring engine compression pressure and power output.
Piston rings are critical sealing components of the engine piston assembly, installed in piston ring grooves and working against the cylinder wall. Their working principle includes:
- Combustion Chamber Sealing: The top compression ring seals against the cylinder wall under combustion pressure, preventing high-pressure gases from leaking into the crankcase (blow-by)
- Oil Control: The second compression ring provides auxiliary sealing, while the oil control ring (scraper ring) removes excess oil from the cylinder wall on the piston's downward stroke, preventing oil from entering the combustion chamber
- Heat Transfer: Piston rings transfer heat from the piston crown to the cylinder wall for dissipation through the cooling system
- Piston Support: Piston rings create a stable sliding interface between the piston and cylinder wall, reducing direct metal-to-metal contact friction
| Symptom | Probable Cause |
|---|---|
| Significantly increased oil consumption; frequent oil top-ups required | Worn or stuck piston rings; oil control ring failure |
| Blue smoke from exhaust (oil burning) | Failed piston ring sealing; oil entering combustion chamber |
| Noticeable power loss; poor acceleration | Worn rings causing insufficient cylinder compression pressure |
| Hard starting, especially cold starts | Reduced cylinder sealing; compression pressure below ignition requirement |
| Increased crankcase blow-by (breather smoking) | Failed compression rings allowing combustion gases to leak into crankcase |
| Cylinder compression test below specification | Piston rings worn beyond limit |
| Brand | Model/Equipment | Engine |
|---|---|---|
| ISUZU | XD | 4LE1 |
| Hitachi | Excavator series | 4LE1/4LE2 |
| JCB | Construction equipment series | 4LE1/4LE2 |
- Number Confirmation: Verify the specific number on the engine nameplate before ordering
- Size Confirmation: This is a STD (Standard Size) piston ring set. If the engine has been rebored, select the corresponding oversize set
- Ring Configuration: Confirm compatibility with original ring specifications before installation
- Installation Orientation: Piston rings have orientation marks that must face upward during installation
- Professional Installation: Must be performed by a qualified engine repair technician
| Feature | Benefit |
|---|---|
| STD Standard Size Design (85mm Bore) | Suitable for standard bore 4LE1/4LE2 engine overhaul |
| Precision Ring Set Configuration (2 * 1.75 * 4 mm) | Provides superior sealing performance and oil control |
| Broad Engine Compatibility | Fits multiple ISUZU engines and construction equipment |
| ISO/TS16949 Quality Management Certified | Internationally recognized automotive industry quality standard |
| 100% Factory Quality Inspection | Every piece undergoes strict quality inspection |
| 1-Year Warranty | Reliable after-sales protection |
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