**All references to OE/OEM names, part numbers, model numbers, and descriptions are for identification purposes only and do not imply that the product is an OEM part unless explicitly stated in the description.**
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- Vendor IPD
- SKU IPDKIF661512CS
- Barcode IPDKIF661512CS
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As an official stocking distributor for IPD, BPS Diesel offers the premium Caterpillar C15 Acert Low Compression Conversion Inframe Rebuild Kit (KIF6615/12/CS)—a high-performance solution designed to convert your twin-turbo engine to a single-turbo setup by reducing the compression ratio from 18:1 to 16:1, restoring enhanced torque, efficiency, and durability without removing the block.
Tailored for off-highway applications in heavy-haul trucking, construction, and industrial fleets (BXS, MXS, NXS serial prefixes), this kit features IPD's IPDSteel® welded pistons for superior strength and heat resistance, crevice seal liners with 0.001” oversized ID to prevent scuffing and improve sealing, and precision components that exceed OEM standards. This upgrade minimizes downtime, reduces stress on the engine, and extends service life in extreme conditions—no core charge required. Note: For off-highway use only, with no warranty.
Kit Includes:
- 2502940 – RETAINER, PISTON PIN (x 12)
- 2531752 – THRUST PLATE (x 2)
- 3178766 – MAIN BEARING, STD (DIESEL) (x 7)
- 3466615 – PISTON, IPDSTEEL, WELDED (x 6)
- C15RS6 – RING SET (x 6)
- C15982NLS – GASKET SET, IN-FRAME,INDUSTRIAL 48 (x 1)
- 2613450 – CON ROD BEARING STD (x 6)
- 5245565 – PISTON PIN (x 6)
- 1685248 – SEAL-ISOLATION (x 1)
- 1979322CSSPWS – LINER SPECIAL WITH SEALS (x 6)
Key Features:
- Low Compression IPDSteel® Pistons (16:1 CR): Welded 1-piece steel design (3466615) with pins (5245565) and retainers (2502940) for exceptional durability, reduced stress, and improved performance in twin-to-single turbo conversions.
- Crevice Seal Liners (0.001” Oversized ID): Special liners with seals (1979322CSSPWS) to eliminate scuffing, enhance sealing, and extend cylinder integrity under high pressure and heat.
- Rod Bearings (STD): Six connecting rod bearings (2613450) for robust support, minimized friction, and reliability in high-vibration environments.
- Main Bearings (STD): Seven bearings (3178766) plus thrust plates (2531752) for stable crankshaft operation and smooth rotation during heavy loads.
- Upper Gasket Set: Comprehensive in-frame industrial seals (C15982NLS) for leak-free assembly and optimal compression.
- Ring Set: Complete sets (C15RS6) for secure, efficient combustion and reduced blow-by.
- Comprehensive Inframe Conversion: All essentials for a full overhaul, including isolation seal (1685248), saving time and costs while boosting torque for off-highway use.
Compatibility: Specifically for Caterpillar C15 Acert engines (BXS, MXS, NXS prefixes) in off-highway applications—confirm your engine specifications for precise fitment in heavy-duty equipment and trucks (not for on-highway use).
Cross References:
- Piston: 3466615
- Cylinder Liner: 1599778CSWS
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