IPD - Cummins ISX DOHC Engine Inframe Overhaul Rebuild Kit - KIF1878/96

As an official stocking distributor for IPD, BPS Diesel provides the premium Cummins ISX DOHC Inframe Overhaul Rebuild Kit (KIF1878/96)—a complete, high-performance solution engineered to restore superior power, efficiency, and durability to your heavy-duty diesel engine without block removal.

Ideal for rigorous trucking, off-highway, and industrial applications, this kit features IPD's advanced components that exceed OEM standards, including closed-skirt forged steel pistons with 17:1 compression for optimized torque and combustion under extreme loads. The 150mm O.D. liners offer exceptional scuff resistance, while precision bearings, seals, and the by-pass valve ensure reduced vibration, enhanced lubrication, and extended service life. With the included oil pan gasket, this all-inclusive kit minimizes downtime and delivers reliable, long-haul performance for fleet operators and independent truckers.

Kit Includes:

• 2881878 – PISTON KIT (x 6)
• 3678756 – SEAL, O-RING (x 1)
• 3800298 – SET, MAIN BEARING, STD (x 1)
• 3820320 – PLUNGER, BYPASS VALVE (x 1)
• 4026684 – GASKET, OIL PAN (x 1)
• 4089405 – CON ROD BEARING, STD, SAWCUT CON RODS (x 6)
• 4309389 – LINER KIT, 150MM O.D. (x 6)
• 4352145 – GASKET SET, UPPER 48 (x 1)

Key Features:

• 17:1 Compression Pistons: High-strength closed-skirt forged steel pistons (2881878) for maximum power, fuel efficiency, and resilience in high-load conditions.
• 150mm O.D. Liner Kit: Specialized cast iron liners (4309389) to combat scuffing and wear, ensuring prolonged cylinder integrity under pressure and heat.
• Standard Main Bearing Set: Seven durable bearings (3800298) for optimal crankshaft support and reduced friction in demanding operations.
• Standard Rod Bearing Set: Six sawcut bearings (4089405) to minimize vibrations and prevent failures in high-stress environments.
• Bypass Valve Plunger: Essential oil regulator (3820320) for improved flow, lubrication, and engine stability.
• Upper Gasket Set: Comprehensive seals (4352145) for leak-free assembly and sustained compression.
• O-Ring Seal: Reliable seal (3678756) for secure connections in critical areas.
• Oil Pan Gasket: Included for complete bottom-end sealing and protection against leaks.
• Comprehensive Inframe Design: All components for efficient overhaul, including thrusts, with drilled con-rod compatibility for seamless fit.

Compatibility: Tailored for Cummins ISX DOHC (dual overhead cam) engines—must be used with drilled connecting rods; confirm your CPL and specs for exact fitment in heavy-duty trucks and equipment (does not include valve cover seal).

Cross References:

• Piston Kit (2881878): OEM: 2881878, 4376244, 4955923
• Seal O-Ring (3678756): OEM: 3678756
• Main Bearing Set STD (3800298): OEM: 3800298, 5406110
• Plunger Bypass Valve (3820320): OEM: 3820320, 4386023
• Con Rod Bearing STD Sawcut (4089405): OEM: 4089405, 4925971, 4059447
• Liner Kit 150MM O.D. (4309389): OEM: 4309389, 4025311, 4089153, 4376430
• Upper Gasket Set (4352145): OEM: 4352145, 4089169, 4955596