7040 Piston Ring Compressor Tool For CAT Cummins Diesel ISX 3400 C-15 5.40''
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
7040 Piston Ring Compressor Tool for CAT and Cummins
The 7040 piston ring compressor tool compresses piston rings for installation in diesel engine cylinders, with an OEM cross-reference to 7040 for CAT and Cummins applications.
Overview
This piston ring compressor tool is designed to help position piston rings during diesel engine assembly and service. The 7040 piston ring compressor tool suits repair work involving CAT 3400, C-15, and Cummins ISX engines. Its 5.40-inch sizing supports the listed engine applications.
Built For Performance
- 7040 tool designation for parts identification
- 5.40-inch bore size
- Compresses piston rings during installation
- Designed for diesel engine service
- Supports piston installation into cylinder bores
Fits These Machines
- for Cummins ISX
- for CAT 3400
- for CAT C-15
On-The-Job Use
- Piston ring installation during diesel engine rebuilding
- Cylinder and piston service on listed engine platforms
- Engine assembly work requiring compressed rings
Specs At A Glance
| Part Number(s) | 7040 |
| Bore Size | 5.40 inches |
| Tool Type | Piston ring compressor |
| Application | Diesel engine service |
Good To Know
Q: What does this piston ring compressor tool do? A: It compresses piston rings so the piston can be positioned into the cylinder bore during engine assembly.
Q: Which engines are listed for this tool? A: The title identifies Cummins ISX, CAT 3400, and CAT C-15 applications. Confirm the exact engine configuration and serial number before ordering.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.