Piston Ring Kit 4089406 for Qsx15 Cummins Engine parts
| Product Name | Piston Ring Kit |
| Part Number | 4089406 |
| Original | China |
| Engine Type | X15 Isx15 Qsx15 Diesel Engine |
| Production Capacity | 500-1000 Pieces Per Month |
| Packing | Original Packing/Neutral packaging/Customer packaging |
| Application | Engineering Machinery, Heavy Truck,diesel engine |
| After-Service | Strict test before shipment/fast delivery |
Honesty comany pecialized in complete engines parts
Honesty comany pecialized in complete engines and spare parts . Mainly sell Cummins engines and Cummins original parts, Dongfeng Cummins (DCEC), Xi’an Cummins (XCEC), Chongqing Cummins (CCEC) engines, Foton Cummins, mechanical engines 4BT3.9, 6BT5.9, 6CT8.3, L8.9, L10, M11, N14, NT855, K19, K38, K50, F3.8, F2.8 series, Cummins electronic control engine ISF, ISBe, ISDe, ISCe, ISLe, ISM11, ISX15 series and engineering machinery engine QSB 3.3 QSB5.9 , QSB6.7, QSC8.3, QSL9, QSM11, QSX15, QSK19 QSK38 QSK50 QSK23 QSK60 QSK45 series engines and all spare parts, almost all Cummins products, we can provide. Caterpillar Engines C27, C7, C9, C13, C15, C4.4, 3516, 3508, C32, C18, C0.5, 3616, 3516, C11, 3508… series engines and all spare parts. we can provide other spare parts and engines.sach as MAN and Scania,Deutz , perkins,Volvo Penta, ISUZU …etc
Piston ring processing features
Piston ring is the key component of engine, its function depends on the combined action of gas pressure, elastic force, inertia force and friction force, forming axial, radial and rotary motion. However, irregular movements (such as axial vibration, radial oscillation and twisting) can easily lead to seal failure and abnormal wear.
Modern design by optimizing structural parameters:
① Control ring height to reduce axial float,
② Adjust radial elastic distribution to suppress vibration,
③ Special surface treatment reduces friction coefficient.
At the same time, dynamic simulation technology is used to balance the sealing demand and motion stability, effectively improve the efficiency of gas seal by 15%-20%, and extend the service life by more than 30%. The core design concept is to utilize beneficial motion characteristics, suppress harmful vibration modes, and achieve synergistic improvement of power and reliability.


The piston ring has three main functions
- Air tightness: reduce gas leakage through elastic sealing (leakage rate <5%), improve thermal efficiency and prevent parts from seizing;
- Oil control: accurately scrape off excess lubricating oil (residual oil film 3-5μm), balance lubrication and oil consumption, and avoid carbon deposits;
- Support: bear 70% of the lateral force of the piston, maintain movement stability, and prevent cylinder wear.
Factory design optimizes the ring tension and surface treatment technology to achieve a seal life of more than 200,000 kilometers, while reducing friction loss by more than 15%, ensuring efficient and reliable operation.
- Cummins piston ring kit 4089406 for X15 Isx15 Qsx15 engine, with list of Cummins piston rings, as below:
| Engine | Description | Part # | Part # | Part # | Part # | Part # |
| B3.9 | piston ring | 3802050 | 3802421 | 3903384 | 3802056 | 5482359 |
| B5.9 | piston ring | 3802230 | 3802052 | 3802232 | 3938177 | 3902286 |
| B5.9 | piston ring | 3918315 | 3904531 | 3932520 | 3904529 | 3902401 |
| B5.9 | piston ring | 3802422 | ||||
| C8.3 | piston ring | 3803961 | 3802110 | 3802429 | 3802258 | 3802040 |
| C8.3 | piston ring | 3922686 | 3919918 | 3919919 | 5482360 | 5718636 |
| C8.3 | piston ring | 5718631 | ||||
| L8.9 | piston ring | 3964073 | 3928294 | 3921919 | 3964073 | 4089644 |
| L8.9 | piston ring | 3948412 | 3921919 | 4089643 | 4955651 | 4376319 |
| L8.9 | piston ring | 4352283 | 5406203 | 5482361 | 5320276 | 5296700 |
| L8.9 | piston ring | 5710126 | 5345860 | 5367340 | 5476816 | 5267662 |
| L8.9 | piston ring | 5297914 | ||||
| L9.5 | piston ring | 5482364 | ||||
| L10 | piston ring | 3803961 | 3803350 | |||
| QSB | piston ring | 4089258 | 3947678 | 3959079 | 4955251 | 3976339 |
| ISB | piston ring | 4955169 | 3971297 | 4932801 | 3970519 | 5482362 |
| ISB | piston ring | 4955519 | ||||
| ISF | piston ring | 5269330 | 4309423 | 4976253 | 4976251 | 4976252 |
| ISF | piston ring | 4309424 | ||||
| M11 | piston ring | 3803977 | 3803705 | 3899561 | 3893752 | 3899413 |
| M11 | piston ring | 3102367 | ||||
| N855 | piston ring | 3801755 | 3801056 | S41887 | 4089810 | 3082580 |
| N855 | piston ring | 4089811 | 3803471 | AR12098 | 3804500 | 218025 |
| N855 | piston ring | 3803358 | 4089501 | 4024942 | 3064396 | 3064397 |
| K | piston ring | AR10680 | 205290 | 205700 | 205710 | 3025450 |
| K | piston ring | 3025451 | 3026595 | 3046227 | 3070589 | 3278723 |
| K | piston ring | 3631247 | 3631248 | 3803472 | 3803533 | 3804571 |
| K | piston ring | 4081176 | 4089500 | 4955975 | 4955976 | |
| X15 | piston ring | 4089406 | 2881682 | 4309441 | 3804708 |
we have three main part of our products:
- Natural gas engine, diesel engine
- Cylinder head, cylnder block, crankshaft and other related engine parts.
- Hydraulic Piston motor and Pump.
we mainly foucs on Cummins engine and engine parts, also we produce some model for Caterpillar, Komatsu, Mercedes Benz, Isuzu, Mitsubishi, Hino and Yanmar contact us for our latest catalog.
Yes, we could accept sample order, we have confidence on our products quality
accept OEM and ODM. We have OEM and ODM experience for Cummins, Mercedes Benz, Mitsubishi, Chryler, Iveco, Citroen, Geely and so on.






