High-tensile 5262106 Cummins ISF3.8 main bearing set. Trimetal alloy construction delivers maximum load capacity for Foton Aumark and GAZ Valdai trucks. Precision-matched for 3.8L engine overhauls. Global shipping available.
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Cummins ISF3.8 main bearing set (OEM: 5262106) with high-load trimetal overlay.
Precision-engineered to prevent bearing spin-out. Fits: Foton Aumark, GAZ Valdai, and VW Delivery trucks.
In stock for immediate global dispatch.
For Cummins ISF 3.8L engine rebuilds and repairs, selecting the right main bearings is critical to ensuring long-term engine reliability and performance. Ruich Value supplies precision-engineered aftermarket Cummins 3.8L main bearings, designed to meet or exceed OEM specifications. These high-quality components are vital for supporting the crankshaft, minimizing friction, and distributing heavy loads efficiently, contributing directly to the engine’s durability and operational heritage.
Our main bearings are crafted through advanced manufacturing processes, embodying precision engineering to deliver the smooth, consistent operation expected from a Cummins engine. They are ideal for auto parts distributors, engine rebuilders, and fleet maintenance managers seeking dependable replacement parts that uphold the engine’s inherent technology leadership and overall integrity.
| Specification | Value |
|---|---|
| Product Type | Main Bearing Set (Standard Size) |
| Material Composition | Trimetal (Steel Back, Copper-Lead, Tin-Lead Overlay) |
| Engine Platform | Cummins ISF3.8 / QSB3.8 |
| Dimensional Tolerance | +/- 0.003mm (Precision Match) |
| Surface Coating | Anti-Friction Babbitt Overlay |
| Fatigue Resistance | Reinforced Steel Backing for LCV Duty |
| OEM Reference | 5262106 |
| Cross Reference | 5262107, 4995444, 5304931 |
| Typical Applications | Foton Aumark, GAZ Valdai, VW Delivery 9.170, JAC Trucks |
| Application Category | Light Commercial Vehicles (LCV) & Urban Delivery |
| Engine Model | Application Field | Typical Equipment Brands & Models |
|---|---|---|
| Cummins ISF 3.8L | Light to Medium-Duty Commercial Vehicles | Foton Aumark, GAZelle, Valdai, Dongfeng Captain |
| Cummins ISF 3.8L | Buses and Minibuses | PAZ Buses, King Long, Yutong |
| Cummins ISF 3.8L | Power Generation (Gensets) | Cummins Power Generation (various small genset models) |
Ruich Value supplies a dedicated range of Cummins engine bearings, including main bearings, connecting rod bearings, and thrust washers.
Category coverage: ISF2.8; ISF3.8; 4BT; 6BT; 6CT; NT855; KTA19; ISX; QSX.
| 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: Low oil pressure, engine knock, and metal debris found during oil changes. Diagnosis: In delivery trucks (Foton/GAZ), frequent stop-start duty cycles can lead to oil film breakdown at startup. Solution: Our 5262106 bearings use a high-density trimetal layer that retains an oil film during critical startup phases, protecting the crankshaft journal from scoring.
A2: Technical Detail: Bearings must be installed into a perfectly clean, dry housing. Ensure main bearing cap torque is within factory specs. Pro-Tip: Always measure the internal diameter with the caps torqued to verify the clearance. Even a 0.02mm deviation will cause a “clatter” under engine load.
A3: Diagnosis: Common rail injection generates high peak torque loads, putting severe pressure on the center main bearings. Our Solution: Trimetal construction combines the structural support of steel, the strength of copper-lead, and the embeddability of babbitt. This protects your engine from microscopic debris and pressure spikes common in urban logistics routes.
Ready to enhance your Cummins 3.8L engine’s performance and longevity? Contact our sales team for competitive pricing and expert support on our full range of main bearings.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business