Product Overview:
The Cummins 3934048 Precision hollow piston pin for Cummins B-series engines (4BT3.9, 6BT5.9, B3.9, B5.9).Made of carburized alloy steel with deep quenching, featuring outstanding wear resistance and impact toughness for high-load engine operation.It connects pistons and small ends of connecting rods, ideal for overhaul of light trucks, construction machinery, generators and farm equipment.
The 3934048 piston pin Specification:
| Item | Parameter |
|---|---|
| Part Number | 3934048 |
| Cross Reference PN | 3901793, 4991283 |
| Compatible Engines | Cummins B-series: 4BT3.9, 6BT5.9, B3.9, B5.9 |
| Outer Diameter | 40 mm (STD standard size, no oversize) |
| Overall Length | 75 mm |
| Structure | Hollow through-hole, chamfered two ends |
| Base Material | Alloy structural steel |
| Heat Treatment | Deep carburizing, quenching & tempering |
| Material Property | Hard anti-wear surface, crack-resistant tough core |
| Single Net Weight | 0.36 kg / 0.8 lbs |
✅Cummins B-series light/medium trucks, dump & logistics trucks
✅Mining & earthwork excavators, loaders, rollers, pavers
✅Stationary/mobile diesel gensets for factory, site & emergency use
✅Long-run tractors, harvesters, irrigation pump stations
✅ Small marine aux engines, industrial pump drives
Why Choose us?
✅Professional China-based Cummins parts supplier
✅Genuine Cummins quality, strict factory inspection
✅Direct factory supply with competitive cost advantage
✅Stable stock & fast global delivery
✅Technical matching support for all B-series engines
Name: Aandy
Mobile:
Tel:19924579082
Email:1941346301@qq.com
Add:5F, Block 4, Next Industrial Park, 136 Zhongkang Road, Futian Dist, Shenzhen