Genuine 3042378 Cummins NTA855 N14 Oil Pump Replaces AR9834 AR9835

Product Overview:

The 3042378 / AR9834 / AR9835 are direct interchange lubricating oil pumps engineered for Cummins NT855 / NTA855 and compatible N14 / NH220 diesel engines. As a high-demand, cost-effective aftermarket,this assembly delivers reliable pressure, stable flow, and durable performance for heavy-duty applications. It is one of the most searched and specified pump kits by global buyers for NTA855 engine maintenance and overhaul.

Technical Specifications
✅Part Number Interchangeability: 3042378, AR9834, AR9835 (fully cross-compatible, drop-in replacement)

✅Gear Design: Precision-machined (straight-cut gears) for consistent pressure output; optimized tooth profile for lower noise and wear

✅Housing Material: High-strength cast iron for rigidity and heat resistance; reinforced mounting flange for vibration stability

✅Operating Pressure: Maintains 33–35 psi (227–241 kPa) at rated speed

✅Oil Flow Rate: Approx. 90–100 L/min (23.8–26.4 gpm) at 1800–2100 rpm, sufficient for full lubrication of NTA855 components

✅Weight: ~14–16 kg: compact design for easy installation and service

✅Sealing & Relief: Integrated pressure relief valve; upgraded gasket and seal materials to prevent leaks under high load

Applications:
✅Engine Fitment: Cummins NTA855 (G1/G2/G4 gensets), NT855, N14, NH220, NH855

✅Power Generation: 200–400 kW diesel generators (prime/standby)

✅Construction Machinery: Bulldozers (Shantui SD22), loaders, excavators, motor graders

✅Marine: Auxiliary engines, workboat propulsion systems

✅Oil & Gas: Wellsite equipment, light-duty fracturing pumps, compressor units

✅Mining & Agriculture: Off-highway trucks, irrigation pumps, heavy harvesters

Why Choose Us?

✅Cost Efficiency: 30–40% lower price than genuine Cummins pumps with equivalent performance

✅Proven Durability: Field-tested in high-temperature, dusty, and continuous-run environments

✅Widely Available: One of the top 3 most stocked NTA855 oil pumps by global suppliers

✅Warranty Support: 12-month warranty against manufacturing defects