Cummins ISX Inframe Engine Rebuild Kit – 150mm APR Steel Liners

IPD Cummins ISX APR In-Frame Rebuild Kit — 150 mm STEEL APR Liner Package | Part No. KIF6243/45CR/STL

Includes Piston Kit 4376243
Compatible with CPL 1437, 2732, 3229, 3459, 3775, 8287, 8288, 8520, 8523, 8550

Built Around Premium STEEL Cylinder Liners

This in-frame rebuild kit is equipped with 150 mm Steel APR cylinder liners — the strongest and most durable liner option available for Cummins ISX APR engines.

Unlike standard liners, steel liners provide dramatically improved resistance to wear, distortion, cracking, and high-temperature fatigue, making them ideal for heavy-duty, high-load, and long-haul applications.

Preferred upgrade for maximum engine longevity
Handles extreme operating conditions
Reduces risk of liner failure and downtime
Designed for extended service life

Why Choose IPD?

Industry-Proven Engineering
IPD is globally recognized for manufacturing premium heavy-duty diesel engine components engineered for durability, precision, and long service life.

Trusted Worldwide Brand
For decades, IPD has supplied high-quality aftermarket engine parts to fleets, rebuilders, and distributors worldwide.

OEM-Level Precision
Manufactured to meet or exceed OEM specifications for proper fitment and dependable operation.

Why This Steel Liner Kit Is the Superior Choice

✔ 150 mm STEEL APR Liners — Maximum Strength & Durability
✔ Complete In-Frame Solution for Cummins ISX APR Engines
✔ Premium Components for Severe-Duty Applications
✔ Reduced Downtime & Long-Term Reliability
✔ Professional-Grade Rebuild Option for Fleets & Rebuilders

"Image may be for illustrative purposes only. The kit contents shown represent the actual parts included."