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3944153 Main Bearing Specification:
| Item | Specification |
|---|---|
| Part Name | Lower Crankshaft Main Bearing (STD) |
| Type | Thin-wall bi-metal bearing, lower shell (NO oil groove / no oil hole) |
| Material | Steel backing + Tin-Aluminum alloy overlay（ |
| Size Grade | STD |
| Fits Engine | Cummins 6CT, 6C8.3, 6D114, ISC, ISL, QSL9 |
| Application | Heavy truck, excavator, genset, marine diesel engine |
| Clearance | Assembled crankshaft clearance: 0.041 ~ 0.119 mm |
| Construction | With locating tab; no oil slot / oil hole on lower shell |
| Weight (single piece) | ~0.125 kg |
| Set Composition | 3944153 (lower) + 3944158 (upper) + 3944164 thrust washers = 3945917 |
Application:
Heavy-duty trucks, excavators, generator sets, marine diesel engines. For Cummins 6CT, 6C8.3, 6D114, ISC, ISL, QSL9 heavy-duty engines.
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FAQ
Q1: Is 3944153 upper main bearing?
A1: No. 3944153 is lower main bearing.
Q2: Which bearing matches lower main bearing 3944153?
A2: The matching upper main bearing is 3944158. The full main bearing kit including upper bearings, lower bearings and thrust washers is part number 3945917.
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