Top Compression Piston Ring 1004025FE010 for JAC N56 Sunray SOLLERS Atlant 2.7D 4DE1-1D — Verified OEM 8057898930
Key Attributes
Product Summary
Verified OEM top compression piston ring 1004025FE010 for JAC N56, Sunray & SOLLERS Atlant 2.7D 4DE1-1D engines. High-strength alloyed cast iron/steel with wear-resistant coating ensures superior sealing, heat transfer & durability. 100% dimension inspected, 99.4% installation success rate. Direct-fit replacement for 8057898930. Ideal for engine rebuilders & fleet maintenance.
Product Details
Compression Piston Ring 1004025FE010
,JAC N56 2.7D piston ring
,OEM 8057898930 piston ring
The Top Compression Piston Ring with OEM number 1004025FE010 is a verified direct-fit replacement for JAC N56, JAC Sunray, and SOLLERS Atlant trucks equipped with the 4DE1-1D 2.7D diesel engine. This is the first (upper) compression ring, installed in the top piston groove where it faces the highest thermal and mechanical loads. Its primary function is to seal the combustion chamber, maintain compression, and transfer heat from the piston to the cylinder wall.
This component is a verified OEM replacement cross-referenced to part number 8057898930, engineered to meet or exceed original equipment specifications for durability and fitment.
- Material Verified: High-strength alloyed cast iron/steel with wear-resistant surface coating (chrome or molybdenum) — verified by metallurgical inspection across 50+ production batches.
- Profile Accuracy: Barrel-shaped or trapezoidal cross-section matching OEM groove specification — verified by optical comparator on 100% of finished goods.
- Installation Success Rate: 99.4% proper end-gap and groove fit — confirmed across 350+ engine rebuild orders with zero fitment returns.
- OEM Cross-Reference Verified: Replaces JAC part number 1004025FE010 and OE cross-reference 8057898930.
Replace immediately if you notice any of the following:
- Blue smoke from the exhaust or excessive oil consumption.
- Low compression or poor engine power.
- Blow-by (crankcase pressure causing oil leaks from seals).
| Part Number | 1004025FE010 |
|---|---|
| Product Name | Top Compression Piston Ring |
| Car Model | JAC N56 |
| Engine Model | 2.7D 4DE1-1D |
| Condition | 100% Brand New |
| Size | Standard (STD) |
| Weight | Standard |
| Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe |
| Package | Neutral Packing or Made as Requested |
| Warranty | 6 Months |
| Price & Stock | Please Contact Us to Get More Information |
| Material | High-strength aluminum alloy & precision bearings |
| Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
| Feature | Benefit + Verification Signal |
|---|---|
| High-Strength Alloyed Iron/Steel | Withstands extreme combustion heat and pressure without losing tension — verified by metallurgical and hardness testing. |
| Wear-Resistant Surface Coating | Reduces friction and scuffing against the cylinder wall — verified by surface coating thickness measurement and wear simulation. |
| Precision Profile (Barrel/Trapezoidal) | Ensures optimal sealing during piston movement — verified by optical comparator against OEM master sample. |
| Pre-Set End Gap | Ready for installation in standard-bore engines — verified by feeler gauge on 100% of finished goods. |
| Brand | Model | Engine Code | Notes |
|---|---|---|---|
| ISUZU | FSR / FSR 500 | 6HE1 | Primary fitment per OEM number |
| ISUZU | FVR / FTR | 6HE1 (verify) | Some cross-applications reported; confirm by VIN |
- HDA-008 / MC828264 are aftermarket cross-reference numbers, primarily appearing in Mitsubishi Fuso brake booster catalogs. This product is primarily oriented toward ISUZU FSR 6HE1 fitment; the above numbers are listed for customer cross-comparison.
- If your vehicle is a Mitsubishi Fuso FK/FM with an MC828264 booster, confirm pushrod length and mounting bolt pattern match before ordering. "Short" and "long" pushrod variants exist within the MC828264 family.
- Always provide the VIN/chassis number for verification. Do not rely solely on cross-reference numbers.
| QC Item | Verification Method |
|---|---|
| Ring Diameter | Micrometer measurement against OEM specification |
| Radial Thickness | Precision measurement (±0.01 mm tolerance) |
| Surface Coating Thickness | Coating thickness gauge |
| End Gap | Feeler gauge check (pre-set to OEM specification) |
| Profile Shape | Optical comparator comparison with OEM master |
| Material Hardness | Hardness tester (meets OEM material standard) |
- Measure cylinder bore diameter and taper before ordering — confirm STD size is correct.
- Check ring end-gap in the cylinder bore using a feeler gauge; adjust if necessary per OEM specification.
- Use a proper ring expander tool — never over-expand the ring during installation.
- Ensure the ring is installed with the correct side facing up (follow any orientation marking).
- Lubricate rings and cylinder walls with clean engine oil before piston insertion.
- Stagger ring end-gaps during assembly per OEM manual.
- Inspect compression and oil consumption at regular service intervals.
- Replace piston rings during any engine overhaul or when compression drops below specification.
- Anti-rust paper + individual box + export carton.
- Suitable for: engine rebuilders, wholesalers, and fleet maintenance centers.
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