Connecting rod bearing set 3047390 is the standard-size kit for Cummins KTA38, QSK38, KTA50 and QSK50 engines. Each set is one upper and one lower shell for a single rod, built from steel backing, a nickel barrier and a copper-lead wear layer, at roughly 0.26 kg. A K38 engine takes 24 pieces and a K50 takes 32. Oversizes run 3047391 through 3047394.
Specifications
| Part Number |
3047390 (Standard Size / STD) |
| Fit Engine |
Cummins KTA38, QSK38, KTA50, QSK50 series engines |
| Applications |
Mining haul trucks, marine propulsion systems, industrial generator sets |
| Bearing Size |
Standard (STD), no oversize |
| Composition Per Set |
1 upper bearing + 1 lower bearing (for 1 connecting rod) |
| Full Set Quantity |
24 pcs/set for K38 engines; 32 pcs/set for K50 engines |
| Single Set Weight |
≈ 0.26 kg |
| Material Structure |
Steel back + nickel barrier layer + copper-lead alloy wear-resistant layer (multi-layer composite) |
| Matching Graded Part Numbers: |
(+0.25：3047391) (+0.50：3047392) (+0.75：3047393) (+1.00：3047394) |
Key Features
- Standard STD size, no oversize machining required
- Steel back, nickel barrier and copper-lead wear layer
- One upper plus one lower shell per connecting rod
- 24 pieces per K38 engine; 32 pieces per K50 engine
- Approximately 0.26 kg per set
- Oversizes: 3047391 (+0.25), 3047392 (+0.50), 3047393 (+0.75), 3047394 (+1.00)
Typical Applications
- Mining haul trucks
- Marine propulsion systems
- Industrial generator sets
Ordering from Sino Bus Parts
- Wholesale pricing; bulk orders welcome
- Global shipping
- Fitment confirmed against your engine serial or CPL before dispatch
- Contact us on WhatsApp for a quotation
