Global automotive components manufacturer and distributor specializing in diesel engines, transmissions, axles, and spare parts, with operations spanning over 90 countries.
3028706 / 3050480 Cummins NT855 OEM Piston
High-performance aluminum piston engineered for superior compression, efficient heat dissipation, and minimal wear – essential for restoring power and reliability in Cummins NT855/NTA855 engines during major rebuilds.
Primary Part Numbers:
- 3028706
- 3050480 (common cross-reference)
Product Details
The Cummins OEM Piston (3028706 / 3050480) is a precision-forged aluminum component designed for the demanding requirements of the NT855 series engines. Featuring optimized crown design, reinforced pin bosses, and high-quality ring grooves, this piston ensures excellent combustion efficiency, reduced oil consumption, and outstanding resistance to thermal and mechanical stress.
Volgen Power supplies genuine Cummins OEM pistons, guaranteeing exact fit with factory liners, rings, and pins for seamless installation and long-term engine performance.
Key Advantages
- Optimized Combustion — Contoured crown promotes efficient fuel burn and power output
- Reduced Friction & Wear — Precision machining and coatings minimize scuffing and extend service life
- Excellent Heat Management — Aluminum construction with strategic reinforcements handles high thermal loads
- Superior Oil Control — Advanced ring land design supports stable piston ring performance
- Direct OEM Replacement — Matches factory specifications for compression ratio and clearance
Applications
Suitable for heavy-duty operations, including:
- Marine propulsion and generator sets
- Construction and earthmoving equipment
- Mining haul trucks and loaders
- Large power generation units
- Industrial machinery and compressors
Engine Compatibility
Compatible with Cummins engine models:
- NT855 / NTA855
- NH855 / NTC855
- Related 855 series variants (marine, industrial, generator)
Often paired with OEM piston rings, pins, and retainers for complete kits.
Technical Specifications
| Attribute | Detail |
|---|---|
| Primary Part Numbers | 3028706 / 3050480 |
| Material | Forged aluminum alloy |
| Bore Size | 139.7 mm (5.500 in) standard |
| Compression Height | OEM specification (typically ~3.5–4 inches) |
| Pin Diameter | Standard NT855 (approx. 2 inches) |
| Ring Grooves | 3–4 grooves (keystone top typical) |
| Weight | Approx. 10–12 lbs per piston |
Volgen Power stocks genuine Cummins OEM pistons for NT855 engines, available individually or in sets for full overhauls.
Revitalize your NT855 engine with factory-quality pistons – contact us today for pricing, kit options, or rebuild advice. Get your quote now!
Send A Message
Meet us at the exhibition
EQUIP AUTO ALGERIA 2026, March 30 – April 2, 2026, Algiers, Booth A48
139th Canton Fair, April 15 – April 19, 2026, Guangzhou, China Booth 9.3J 09-10
Australian Auto Aftermarket Expo 2026, May 14 – May 16, 2026, Melbourne, Booth U28i
Automechanika Istanbul, May 19 – May 22, 2026, Hall 11A, Booth B120
CTT Expo – International Trade Fair for Construction Equipment and Technologies, May 26 – May 29, 2026, Moscow, Hall 8, Booth 731
