Injector Sleeve Seat Cutter (1-Flute Carbide) w/O-Ring Cummins ISX15/QSX15 DOHC
This Carbide Injector Sleeve Seat Cutter is a specialized tool for Cummins ISX15 / QSX15 DOHC engines. It is used in conjunction with a guide bushing (416-6156-32) and driving arbor (414-6114-10) to precisely cut the injector tip protrusion to the required specification. Lubrication and a slow RPM are necessary for proper use.

Product Details
This (single flute) Injector Sleeve Seat Cutter is a carbide tool specifically designed for accurately machining the injector tip protrusion in Cummins ISX15 and QSX15 DOHC engines. This cutter is a vital component of the “450-6156-00 - ISX15 / QSX15 DOHC Kit with Toolbox,”.
The primary function of this sleeve seat cutter is to ensure the injector tip protrusion meets the precise specifications required for optimal engine performance. The cutting process involves a specific setup using additional tooling:
- Guide Bushing: The cutter is used with a guide bushing (416-6156-32) to ensure accurate alignment and cutting.
- Driving Arbor: A driving arbor (414-6114-10) is used to power the cutter, typically in a seat and guide machine.
- Gauging: A gauge finger (433-6991-00) is bolted to the cylinder head, and a gauge (416-6156-94) with a handle (414-6111-30) is used to set the cutting depth. The cutting continues until the pilot end of the cutter contacts this gauge.
Important Usage Notes:
- Lubrication: It is crucial to lubricate the sleeve seat cutter with “EA” Lube (468-9910-08) during the cutting process.
- RPM: Operate the cutter at a slow RPM, generally between 60 and 85 RPM, adjusting as needed to achieve a good surface finish.
After the cutting operation, the injector tip protrusion should be verified using a tip protrusion gauge (416-6156-50) and the guide bushing (416-6156-32). The flat tip of the protrusion gauge should be flush with the head surface if the protrusion is within specification.
In summary, the [416-6156-25] Carbide Injector Sleeve Seat Cutter is an essential tool for precisely machining the injector tip protrusion in Cummins ISX15/QSX15 DOHC engines, ensuring correct injector height and optimal engine performance.
Compatibility
| Engine Manufacturer |
|---|
| Cummins |
Specifications
| SKU | 416-6156-25 |
|---|---|
| MPN | 416-6156-25 |