Description
The PAI 390096X is a remanufactured exchange fuel injector for Caterpillar C15 ACERT diesel engines, replacing Caterpillar 229-5919, 223-5329, and reman number 10R1000. Each injector is remanufactured and tested for flow, pressure, and spray pattern to restore fuel delivery, power, and fuel economy. As an exchange (X-suffix) part, a core charge applies and is refunded on return of an acceptable core.
Symptoms of a Failing Fuel Injector
- Rough idle or cylinder misfire
- White or black exhaust smoke
- Fuel knock and excessive combustion noise
- Low power and poor throttle response
- Hard starting and declining fuel economy
- Fuel dilution of the engine oil
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 390096X (also listed as 390096EX) |
| Part Type | Fuel injector assembly |
| Replaces | Caterpillar 229-5919 / 10R1000 |
| Engine | Caterpillar C15 ACERT |
| Condition | Remanufactured (exchange) |
| Core Charge | Core charge applies — refundable on return of an acceptable core |
Cross References
| Caterpillar | 229-5919 (2295919), 223-5329 (2235329), 216-7225 (2167225), 10R-1000 (10R1000), EX635919 |
|---|---|
| PAI | 390096X, 390096EX |
| Interstate-McBee | R-10R1000 |
Applications
- Caterpillar C15 ACERT (engine serial prefix MBN)
- The 229-5919 / 10R1000 injector number group is also catalogued against certain C15, C16, and 3406E applications — always match by engine serial number
Verify part number and engine application before ordering to confirm fitment. Install with new O-rings and seals, and follow Caterpillar torque and calibration procedures.









