Premium 3901170 Cummins 6CT 8.3L rod bearing set in stock. Trimetal construction resists bearing spin-out in Komatsu PC300-6 and Sany SY335 excavators. Global shipping available. Request wholesale quote!
Product Categories:
Product Tags:
Send us a message
Cummins 6CT 8.3L connecting rod bearing set (OEM: 3901170) with heavy-duty trimetal overlay.
Precision-engineered to prevent bearing spin-out in Komatsu PC300-6, Sany SY335, and Liugong CLG856 construction equipment.
In stock for immediate wholesale.
The Cummins C-Series 8.3L engine is the workhorse behind some of the world’s most reliable agricultural and construction machinery. To keep these engines running under heavy harvest or excavation loads, you need bearings that resist fatigue. Our Cummins 6CT Connecting Rod Bearings are engineered as direct replacements for OEM 3901170, ensuring precise fitment for Case IH Magnum tractors and Komatsu PC300 excavators.
Ruich Value manufactures these bearings using high-grade materials designed to handle the torque output of the 6CTA turbo-diesel platform. Whether you are a parts distributor supplying rural workshops or an engine rebuilder fixing a crankshaft spin-out, our bearings offer the verified dimensions and undersize availability needed to restore factory performance.
| Specification | Value |
|---|---|
| Product Type | Connecting Rod Bearing Set |
| Material Composition | Trimetal (Steel Back, Copper-Lead, Babbitt Overlay) |
| Bearing Type | High-Load Industrial Bearing |
| Dimensional Tolerance | +/- 0.003mm (Precision Fit) |
| Fatigue Strength | Reinforced for High-Torque Cycles |
| OEM Reference | 3901170 |
| Cross Reference | 3901171, 3939626, 3944158 (Set) |
| Typical Applications | Komatsu PC300-6, Sany SY335, Liugong CLG856, Dongfeng Trucks |
| Application Category | Heavy-Duty Construction Machinery & Mining |
| Engine Series | Application Field | Verified Equipment Models |
|---|---|---|
| Cummins 6CTA 8.3 | Agriculture (Tractors) | Case IH Magnum 7110, 7120, 7130, 7140, 7250 |
| Komatsu S6D114 (6CT) | Construction (Excavators) | Komatsu PC300-6, PC350-6, WA380-3 Wheel Loader |
| Cummins C8.3 | Heavy Trucks & Marine | Freightliner FL80, Marine Gensets, Dennis Buses |
Ruich Value supplies a complete range of bottom-end components for Cummins 8.3L engines.
Category coverage: Main Bearings (3944158); Conrod Bearings (3901170); Cam Bushings.
| Engine Model | Item Name | Part No. |
|---|---|---|
| 6BT / EQBT (5.9L) | Main Bearing | 3929016, 3929021, 3901150, 3901306, (3802070 set), 3927772, 4892114/4892715 |
| B Series (3.9L/4.5L) / QSB | Main Bearing | 3978818 / 3978820 / 3978822 (Set), 3977272 |
| B Series (3.9L/4.5L) / QSB | Connecting Rod Bearing | 3969562, 4893693 |
| EQBTA | CAM Bushing | 3971970, 3901090, 3901170 |
| 4BTA390 | Connecting Rod Bearing | 3901170, 3941476 |
| Cummins C (8.3L) | Main BearingMain Bearing | 3944158 / 15/1163, 3945917 |
| Cummins C (8.3L) | Connecting Rod Bearing | 3950661, 3917430 (Standard) |
| Cummins C (8.3L) | Flanged Bearing | 3944163 |
| Cummins C (8.3L) | CAM Bearing | 3943199, 3945329 |
| Cummins C (8.3L) | CAM Bushing | 3913990 |
| Cummins L (10L) | Main Bearing | 3901590, 3919840, 3926798 |
| Cummins L (10L) | Connecting Rod Bearing | 3966344 / 3950661 |
| Cummins D (B Series) | Flanged Bearing | 3978822 / 24 (Thrust Washer Set) |
| ISDe (Cummins Renault D) | CAM Bearing | D4889112 |
| ISDe (Cummins Renault D) | CAM Bushing | D4890059 |
| ISDe (Cummins Renault D) | Rod Bearing | D4893637 |
| Dongfeng Renault (DCI11) | Main Bearing | D5010295445 (Upper), D5010295446 (Lower) |
| Dongfeng Renault (DCI11) | Connecting Rod Bearing | D5010359940 (Upper), D5010477479 (Lower) |
| Dongfeng Renault (DCI11) | Thrust Washers | D5010295448 / D5010295447 |
| QSZ(ISZ)13 | Main Bearing | 4999939 (Upper), 4999940 (Lower) |
| QSZ(ISZ)13 | Connecting Rod Bearing | 4999948 (Upper), 4999949 (Lower) |
| FOTON CUMMINS (3.8L) | Main Bearing | 4948505/4948506 |
| FOTON CUMMINS (3.8L) | Flanged Bearing (Upper/Lower) | 4948507/4948508 |
| FOTON CUMMINS (3.8L) | Connecting Rod Bearing (Upper/Lower) | 4948509/4949510 |
| FOTON CUMMINS (2.8L) | Main Bearing (Upper/Lower) | 4996250/49966251 |
| FOTON CUMMINS (2.8L) | Flanged Bearing | 4946031 |
| FOTON CUMMINS (2.8L) | Connecting Rod Bearing | 5261124 / 5284535 / 5340181 / 5348887 / 5261125 / 5284537 / 5340182 |
| NT855 (13L/15L) | Main Bearing | 3801260 |
| NT855 (13L/15L) | Connecting Rod Bearing | 214950 |
| NT855 | Thrust Washers (Small Hole) | 203660 |
| N14 (NT743/NH220) | Thrust Washers | 3020557 |
| N14 (NT74) | Main Bearing | 3801260 |
| M11 (LT10) | Main Bearing | 3016770 (Upper), 3016780 (Lower) |
| M11 (LT10) | Thrust Washers | 3016760 (Set), 4025125 (Without Flange) |
| KTA(QSK)19 | Main Bearing | 3016760, AR12270A |
| KTA(QSK)19 | Connecting Rod Bearing | 205840 |
| KTA(QSK)19 | Thrust Washers | 205112 |
| KTA(QSK)38 / KTA(QSK)50 | Main Bearing | 3018210 (Standard Set), AR12250 |
| KTA(QSK)38 / KTA(QSK)50 | Connecting Rod Bearing | 3042390 |
| KTA(QSK)38 / KTA(QSK)50 | Thrust Washers | 3000139 |
| QSX(ISX)15 | Main Bearing | 3678555 (Upper), 3678556 / 3800298 (Upper), 4089139 / 4089405 (Lower) |
| QSX(ISX)15 | Connecting Rod Bearing | 4925971 |
| QSX(ISX)15 | Thrust Washers | 4925975 |
A1: Symptom: Engine “clatter” under load and fluctuating oil pressure. Diagnosis: In heavy excavators like the PC300-6, continuous high-load digging causes excessive connecting rod movement, which can collapse the oil film and lead to bearing “spin-out.” Solution: Our 3901170 trimetal bearings feature a reinforced copper-lead alloy layer that provides superior load-carrying capacity compared to bimetal bearings, preventing shell deformation during extreme digging force.
A2: Technical Detail: Connecting rod bolts must be tightened in stages and checked for elongation. Pro-Tip: Always check the crankshaft journal with a micrometer before installation. Even if the bearing is new, an oval-shaped journal will destroy the trimetal surface within hours due to inconsistent oil clearance.
A3: Diagnosis: Construction machinery engines experience frequent “cold” full-load starts. Our Solution: The trimetal construction includes a soft tin-lead overlay that allows for “embeddability,” meaning the bearing surface can absorb microscopic metal particles without damaging the crankshaft journal, protecting the engine core in dusty, high-vibration mining environments.
Need pricing for Case J901170 replacements or bulk oversize sets? Contact our export team.
Chat via WhatsApp
Or email us at: [email protected]
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business