Replacement Inframe Kit for Cummins ® NT-N14 Applications N14 OEM Cross References: 4024881 Superseded/Alternate Numbers: M-4024875

What’s Included

4024881 | Inframe Rebuild Kit | Cummins N14 310/330/350/370E Engine

1 x In-Frame Rebuild Kit – 4024881

Contents:

• 6 x Cylinder Kit
  • 1 x Cylinder Liner
  • 1 x Piston Pin
  • 1 x Liner Seal Kit
  • 1 x Piston Crown
  • 1 x Piston Ring Set
  • 1 x Piston Skirt
• 1 x Oil Pan Install Kit
• 12 x Connecting Rod Bearing
• 1 x Main Bearing Set
• 1 x Upper Engine Gasket Set
  • 1 x Turbo Oil Inlt O-Ring Seal
  • 3 x Rocker Lever Cover Gasket
  • 1 x Rectangular Ring Seal
  • 1 x Gasket
  • 1 x Ring Seal
  • 1 x Thermostat Housing Gasket
  • 3 x Exhaust Manifold Gasket
  • 1 x Thermostat Housing Gasket
  • 3 x Cylinder Head Gasket
  • 3 x Rocker Lever Housing Gasket
  • 3 x Water Bypass O-Ring Seal
  • 6 x Injector Top O-Ring Seal
  • 6 x Injector Mid O-Ring Seal
  • 6 x Injector Btm O-Ring Seal
  • 1 x Cap screw Gauge
  • 12 x Fuel Crossover O-Ring Seal
  • 1 x Turbo Oil Drain Gasket
  • 3 x Manifold Gasket
  • 6 x Gasket
  • 6 x O-Ring Seal
  • 1 x Thermostat Housing Gasket

Application Chart By CPL Number:

Warranty: 2 Years Warranty Parts & Labor

Enhance performance and maximize the lifespan of your diesel engine

Expertly crafted with premium components, these kits include everything needed for a complete inframe overhaul rebuild . Each kit is designed with high-performance pistons, hardened cylinder liners, durable bearings, precision-coated seals, and a comprehensive gasket set to ensure a reliable rebuild.

These Heavy Duty Kits replacement parts are designed for NT/N14 engine applications. Originally introduced in the 1950s, the NT series evolved into the N14 in the 1980s, featuring electronic controls for enhanced fuel efficiency, lower emissions, and increased horsepower. Renowned for its durability and reliability, the N14 became one of Cummins’® most successful engines, widely used in both on-highway and off-highway applications.

Application & Fitment

• Engine Make: Cummins
• Engine Model / Application: NT-N14

Confirm the original part number and engine identification before ordering. Where applicable, also verify serial-number range, production year, piston style, bearing size or other configuration notes shown in the product information.

Part Numbers & Cross References

• OEM Cross Reference: 4024881
• Alternate / Superseded: M-4024875
• Interstate-McBee Reference: M-4024881

Need Help Confirming Fitment?

Use the engine model, serial number and original part number when checking compatibility. For kits and sets, review the complete component breakdown above before ordering because contents can vary by engine configuration.