Description
Premium aftermarket replacement engine overhaul kit from PAI Industries. The C15603-010HP is a High Performance out-of-frame (overhaul) engine rebuild kit designed for Caterpillar C15 diesel engines. Part of PAI’s High Performance line, this kit features upgraded materials, special finishes, and advanced treatments engineered for extended service life and maximum durability, and is backed by PAI’s 3-Year Unlimited Mileage Warranty.
Signs You Need an Engine Overhaul
- Excessive blue or white exhaust smoke under load
- Loss of power and poor fuel economy
- Low compression across multiple cylinders
- Excessive oil consumption beyond normal top-off intervals
- Coolant contamination in the oil or oil in the coolant
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | C15603-010HP |
| Part Type | High Performance Engine Overhaul Kit (Out-of-Frame) |
| Engine Compatibility | Caterpillar C15 |
| Product Line | PAI High Performance |
| Warranty | 3-Year Unlimited Mileage (PAI High Performance) |
| Weight | Approximately 239.5 lbs |
Kit Includes
This out-of-frame overhaul kit includes the following High Performance components (verify contents against your engine serial number before ordering):
- High Performance Cylinder Kits (qty 6) — PAI 301071HP (includes piston, liner, ring set, pin, and retainers)
- Piston Kit — PAI 311137
- Overhaul Gasket Set — PAI 331140
- Oil Pan Gasket Kit
- High Performance Main Bearing Set
- High Performance Connecting Rod Bearing Set
Kit contents are engine serial number specific and may vary. Contact us with your engine serial number to confirm exact components.
Cross References
This part replaces or is equivalent to the following part numbers:
- PAI Industries: C15603-010 (standard bearing version)
- Also known as: CAPC15603-010HP
Applications
This High Performance engine overhaul kit fits Caterpillar C15 engines found in:
- Caterpillar C15 on-highway truck engines
- Kenworth T600, T660, T800, W900 with Cat C15
- Peterbilt 379, 386, 389 with Cat C15
- Freightliner Classic, Columbia, Century with Cat C15
- Western Star 4900 with Cat C15
This kit is engine serial number and arrangement number specific. Verify your engine serial number and configuration before ordering to confirm fitment.
For the standard (non-HP) version, see PAI C15603-010.
