IPD - Cummins ISX DOHC Engine Inframe Overhaul Rebuild Kit - KIF1879/96

As an official stocking distributor for IPD, BPS Diesel supplies the premium Cummins ISX DOHC Inframe Overhaul Rebuild Kit (KIF1879/96)—a complete, high-performance upgrade designed to enhance durability, power, and efficiency in your heavy-duty diesel engine without removing the block.

Tailored for demanding trucking, off-highway, and industrial applications, this kit transitions your ISX engine to advanced 1-piece closed-skirt forged steel pistons with a 19:1 compression ratio, matching original specs while delivering superior strength and heat resistance under extreme loads. Featuring 150mm O.D. liners for exceptional scuff resistance, precision bearings, seals, and a bypass valve plunger, it ensures smooth operation, reduced vibration, and extended service life. Must be used in full sets with drilled connecting rods—this all-inclusive kit, with oil pan gasket, minimizes downtime and maximizes reliability for fleet operators and heavy-haul pros.

Kit Includes:

• 2881879 – 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:

• 1-Piece Steel Pistons (19:1 CR): Closed-skirt forged steel design for unmatched strength, durability, and performance in high-stress conditions, upgraded for better thermal management.
• 150mm O.D. Liners: Cast iron with anti-scuff design to prevent wear, ensuring optimal fit and longer cylinder life under high pressure and heat.
• Main Bearings (STD): Seven high-quality bearings for robust crankshaft support and reduced friction in intense operations.
• Rod Bearings (STD, Sawcut Con Rods): Six bearings optimized for drilled connecting rods, minimizing failures in high-vibration environments.
• Thrust Bearing: Effectively handles axial loads for enhanced engine stability and efficiency on tough routes.
• Upper Gasket Set and Oil Pan Gasket: Comprehensive seals for leak-free rebuilds and reliable compression.
• Seal O-Ring and Plunger Bypass Valve: Critical for maintaining oil pressure and flow, promoting smoother operation and less maintenance.

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

Cross References:

• OEM: 2881879
• OEM: 3678756
• OEM: 3800298
• OEM: 3820320
• OEM: 4026684
• OEM: 4089405
• OEM: 4309389
• OEM: 4352145