4024878 | Inframe Rebuild Kit for Cummins N14, NewN14-310P/330P/410P/350P

The 4024878 Inframe Rebuild Kit is engineered for Cummins N14 diesel engines, specifically supporting the New N14-310P, 330P, 350P, and 410P models. This complete kit provides all the essential components needed to restore engine performance without removing the engine from the chassis. Ideal for fleet overhauls, preventative maintenance, or engine repair, this kit helps restore lost compression, improve fuel efficiency, and extend service life.

All components meet or exceed OEM standards and are manufactured in ISO 9001:2015-certified facilities to ensure lasting performance and reliability.

Kit Features

• Designed for Cummins N14 engines (New N14-310P / 330P / 350P / 410P)

• High-performance in-frame rebuild solution for heavy-duty diesel applications

• Includes: pistons, piston rings, cylinder liners, connecting rod bearings, main bearings, upper gasket set, and more

• Direct-fit replacement for in-chassis rebuilds—no machining or block removal required

• OEM-grade quality backed by a 2-year, unlimited-mileage warranty

• Manufactured to strict quality standards in ISO-certified facilities

Kit Contents:  

• (12) Connecting Rod Bearings
• (1) Main Bearing Set
• (6) Cylinder Kits
  • (6) Cylinder Liners
  • (6) Piston Pins
  • (6) Liner Seal Kits
    • (6) Crevice Liner Seals
    • (12) Liner Seals
    • (12) Retaining Rings
  • (6) Engine Pistons
  • (6) Piston Ring Sets
    • (6) Top Piston Rings
    • (6) Middle Piston Rings
    • (6) Oil Control Piston Rings
• (1) Oil Pan Install Kit
  • (6) Gaskets
  • (6) Oil Pan Suction Tube Gaskets
  • (6) Seals
  • (6) O-Ring Seals
  • (6) Oil Pan Gaskets
• (1) Upper Engine Gasket Set
  • (3) Turbo Washers
  • (2) Water Bypass O-Ring Seals
  • (4) Water Bypass O-Ring Seals
  • (12) Fuel Crossover O-Ring Seals
  • (6) Seals
  • (3) Manifold Gaskets
  • (6) Gaskets
  • (3) Turbo Oil Inlet O-Ring Seals
  • (1) Seal
  • (6) O-Ring Seals
  • (6) Grommets
  • (18) Oil Connection O-Ring Seals
  • (1) Thermostat Housing Gasket
  • (1) O-Ring Seal
  • (3) Rocker Lever Cover Gaskets
  • (1) Rectangular Ring Seal
  • (1) Gasket
  • (6) O-Ring Seals
  • (1) O-Ring Seal
  • (1) Gasket
  • (1) Ring Seal
  • (6) Pressure Regulator Seals
  • (3) Cylinder Head Gaskets
  • (3) Rocker Lever Housing Gaskets
  • (1) Capscrew Gauge