4376428 | Cummins ISX Inframe Rebuild Kit, New 152MM Liner SX07 / ISX2/ISX3 EGR CM870 CM871

The 4376428 Inframe Rebuild Kit is a complete in-chassis engine overhaul solution for Cummins® ISX15 engines. This OEM-quality kit includes everything required to restore compression, reduce oil consumption, and extend the life of your engine—without removing it from the chassis. Ideal for high-mileage heavy-duty trucks, this kit is engineered to meet or exceed original manufacturer specifications and includes precision-fit components for reliable, long-lasting performance.

Key Features:

• Genuine Cummins® ISX15 inframe rebuild kit

• Includes all major internal components needed for top-end overhaul

• Built to OEM standards for durability and longevity

• Ideal for in-chassis engine repair and preventative maintenance

• Restores lost power, improves fuel economy, and reduces emissions

Kit Contents:

• (6) Piston Kits
• (6) Piston Engine Assemblies
• (12) Retaining Rings
• (6) Piston Pins
• (6) Piston Ring Sets
• (6) Cylinder Liner Kits
• (6) Connecting Rod Bearings
• (1) Main Bearing Set
• (1) Oil Line O-Ring Seal
• (1) Bypass Valve Plunger
• (1) Oil Pan Gasket
• (1) Upper Engine Gasket Set
• (2) Oil Manifold O-Ring Seals
• (1) Flange Gasket
• (1) Turbocharger Gasket
• (1) Exhaust Gas Re-Circulation Valve Gasket
• (1) Gasket
• (6) Purple HPI O-Ring Seals
• (6) Yellow HPI O-Ring Seals
• (6) Green HPI O-Ring Seals
• (6) HPI/XPI O-Ring Seals
• (1) O-Ring Seal
• (1) Grommet Seal
• (1) Connection Gasket
• (1) O-Ring Seal
• (1) Camshaft Cover Gasket
• (1) Camshaft Cover Gasket
• (1) O-Ring Seal
• (1) Electronic Control Module
• (1) Thermostat Housing Cover
• (4) Exhaust Manifold Gaskets
• (1) Exhaust Manifold Gasket
• (1) Thermostat Housing Gasket
• (6) Sealing Washers
• (2) Sealing Washers
• (2) O-Ring Seals
• (4) Cavity Plugs
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) Plain Hose
• (1) Rectangular Strip Seal
• (1) Fuel Control Housing Gasket
• (1) Camshaft Cover Seal
• (1) Camshaft Cover Seal
• (1) ISX Cylinder Head Gasket
• (1) O-Ring Seal
• (1) Turbocharger Drain Flange Gasket

Warranty: 2 Year Parts and Labor Warranty