5405987 | Cummins ISX15/QSX15 APR Inframe Rebuild Kit SOHC 152MM liner CM2250 / CM2350

The 5405987 In‑Frame Rebuild Kit is a premium solution for overhauling Cummins ISX15 and QSX15 single overhead camshaft (SOHC) engines. Featuring APR (Anti-Polishing Ring) cylinder liners, this kit is engineered to control carbon buildup and minimize cylinder wall wear, extending engine life and restoring factory performance. Ideal for in-chassis rebuilds, this kit includes all major internal components and is built to OEM specifications in ISO 9001-certified facilities for reliability and durability in heavy-duty applications.

Key Features

• Engineered for Cummins ISX15 / QSX15 SOHC Engines
  Designed to fit a wide range of ISX15 and QSX15 single overhead cam configurations.

• APR Liner Technology
  Anti-polishing ring liners prevent excessive carbon buildup, reducing liner wear and improving piston-ring seal over time.

• Comprehensive Rebuild Kit
  Includes pistons, APR liners, piston rings, connecting rod bearings, main bearings, cylinder head gaskets, and complete seal kits—optimized for in-frame engine service.

• OEM-Level Manufacturing
  All parts meet or exceed Cummins specifications, produced in ISO 9001:2015-certified and AAR-compliant facilities.

Kit Contents:

• (6) Cylinder Liner Kits
• (6) Cylinder Liners
• (6) Carbon Scraper Rings
• (6) .032 Liner Shims
• (6) Rectangular Ring Seals
• (6) Piston Kits
  • (6) Top Piston Rings
  • (6) Second Piston Rings
  • (6) Oil Piston Rings
• (6) Piston Ring Sets
• (6) Piston Pins
• (6) Engine Piston Assemblies
• (12) Retaining Rings
• (6) ISX Connecting Rod Bearings
• (1) Main Bearing Set
• (7) Upper Main Bearings
• (7) Lower Main Bearings
• (4) Standard Crankshaft Thrust Bearings
• (1) O-Ring Seal
• (1) Bypass Valve Plunger
• (1) Oil Pan Gasket
• (1) Upper Engine Gasket Set
• (1) Thermostat Seal
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) Thermostat Housing Cover Gasket
• (4) Exhaust Manifold Gaskets
• (2) Grommet Seals
• (1) Exhaust Manifold Gasket
• (1) Water Seal
• (5) O-Ring Seals
• (6) Copper XPI Injector Seals
• (2) Sealing Washers
• (1) Thermostat Housing Gasket
• (1) Exhaust Outlet Gasket
• (1) Intake Manifold Gasket
• (2) O-Ring Seals
• (1) Water Seal
• (1) Turbocharger Gasket
• (1) Rectangular Ring Seal
• (1) Electrical Connector Seal
• (1) O-Ring Seal
• (1) Rectangular Strip Seal
• (2) Seal Carriers
• (2) Turbo Hose O-Ring Seals
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) O-Ring Seal
• (16) Sealing Washers
• (2) Sealing Washers
• (8) Cavity Plugs
• (2) Sealing Washers
• (1) O-Ring Seal
• (8) Sealing Washers
• (1) Oil Drain Gasket
• (1) Exhaust Outlet Connection Gasket
• (1) Camshaft Cover Seal
• (1) Injector Gasket
• (6) O-Ring Seals
• (3) Gaskets
• (1) Valve Cover Gasket
• (6) HPI/XPI O-Ring Seals
• (2) O-Ring Seals
• (1) Grommet Seal
• (1) Camshaft Cover Gasket
• (1) Cylinder Head Gasket

Warranty: 2-Year Parts and Labor Warranty