IF4955365 | Cummins B-Series Inframe Rebuild Kit

The IF4955365 In‑Frame Rebuild Kit is a comprehensive solution designed to restore power, reliability, and fuel efficiency to Cummins B-Series diesel engines—including the 5.9L and 6.7L platforms. Engineered for in-frame service without removing the engine block, this kit includes all essential components to complete a top-to-bottom refresh. Whether you're maintaining a light-duty fleet, agricultural equipment, or industrial application, this kit delivers OEM-level performance at a competitive aftermarket value.

Key Features

• Fits Cummins B-Series Engines: Including popular 5.9L and 6.7L configurations (verify CPL/ESN for fitment)

• Complete In-Frame Solution: Ideal for refreshing worn engines without full disassembly

• OEM-Quality Components: Precision-engineered parts meet or exceed Cummins specifications

• ISO 9001 Certified Manufacturing: Built to rigorous quality standards for durability and performance

• Backed by Warranty: Typically covered by a 2-year, unlimited mileage warranty (depending on supplier)

Kit Contents:

• (6) Piston Kits
• (12) Piston Pin Retainers
• (6) Piston Pins
• (6) Engine Pistons
• (6) Piston Ring Sets
• (6) Top Piston Rings
• (6) Piston Standard Rings
• (6) Piston Standard Rings
• (1) Main Bearing Set
• (1) Thrust Bearing
• (6) Main Bearings
• (7) Main Bearings
• (6) Connecting Rod Bearings
• (6) Connecting Rod Bearings
• (1) Oil Pan Gasket
• (1) Oil Suction Connection Gasket
• (1) Oil Pan Gasket
• (1) Upper Engine Gasket Set
• (1) O-Ring Seal
• (1) Seal
• (6) Injector Seals
• (1) Coolant O-Ring Seal
• (2) O-Ring Seals
• (1) O-Ring Seal
• (2) Rectangular Ring Seals
• (1) Cover Plate Gasket
• (1) Intake Manifold Cover Gasket
• (2) Connection Gaskets
• (1) Rocker Cover Gasket
• (1) O-Ring Seal
• (1) Thermostat Seal
• (24) Valve Stem Seals
• (1) Rocker Cover Housing Gasket
• (12) Sealing Washers
• (1) Sealing Washer
• (1) Sealing Washer
• (14) Sealing Washers
• (1) O-Ring Seal
• (1) Connection Gasket
• (4) EGR Valve Gaskets
• (1) O-Ring Seal
• (1) Accessory Drive Cover Gasket
• (1) Valve Cover Gasket
• (1) Cylinder Head Gasket
• (1) EGR Transfer Tube Gasket
• (6) O-Ring Seals
• (1) Oil Drain Gasket
• (6) Exhaust Manifold Gaskets
• (3) O-Ring Seals
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) Seal
• (2) Seals

Warranty: 2 Year Parts and Labor Warranty