---
product_id: 209504549
title: "7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4\" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS)"
brand: "e-cowlboy"
price: "$9390"
currency: MXN
in_stock: true
reviews_count: 10
category: "E Cowlboy"
url: https://www.desertcart.mx/products/209504549-7040-piston-ring-compressor-tool-adapter-anti-polishing-ring-cummins
store_origin: MX
region: Mexico
---

# Time-saving quick install design 5.4" bore precision fit OEM-spec heavy-duty alloy steel 7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS)

**Brand:** e-cowlboy
**Price:** $9390
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your engine game with pro-grade precision and durability!

## Quick Answers

- **What is this?** 7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS) by e-cowlboy
- **How much does it cost?** $9390 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/209504549-7040-piston-ring-compressor-tool-adapter-anti-polishing-ring-cummins)

## Best For

- e-cowlboy enthusiasts

## Why This Product

- Trusted e-cowlboy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Build:** Crafted from premium centrifugal cast alloy steel for unmatched strength
- • **Risk-Free Purchase:** Backed by 30-day return and 12-month warranty for total peace of mind
- • **Anti-Corrosion Coating:** Bright red paint finish resists rust and deformation over time
- • **Effortless Installation:** Works with existing compressors to speed up piston ring fitting
- • **Precision Compatibility:** Fits Cummins ISX/QSX 15 & Caterpillar 3400 series perfectly

## Overview

The 7040 Piston Ring Compressor Tool Kit is a heavy-duty, OEM-spec 4-piece set designed for Cummins ISX/QSX 15 and Caterpillar 3400 series engines with a 5.4" bore. Made from centrifugal cast alloy steel with a corrosion-resistant red coating, it ensures precise, quick piston ring installation while offering long-lasting durability and a worry-free 12-month warranty.

## Description

Great Compatibility — Compatible with Cummins ISX 15 & QSX 15 and Caterpillar 3400, 3406, 3408, 3412 and C15 with a 5.4" bore.

Review: Very please with product ! Heavy Duty - very pleased ,
Review: Good Quality - Very good quality and fits perfectly. A great value !

## Features

- Great Compatibility — Compatible with Cummins ISX 15 & QSX 15 and Caterpillar 3400, 3406, 3408, 3412 and C15 with a 5.4" bore.
- Special Features— Alternative to PT-7040, 5394454, 5299448, 5299447 and 5299339. Each part is manufactured to OEM specifications.
- Upgrade Design — Used In conjunction with an existing piston ring compressor to install piston rings into anti-polishing cylinder liners. Removing and installing the piston ring with ease and quick to save your time and energy.
- Superior Quality — Premium grade heavy duty steel, manufactured using centrifugal casting for quality, durability, anti-deformation and anti-corrosion. High precision, high hardness and bright red paint coated surface can prevent the tool from corrosion and rust to provide a much longer service life.
- 100% Satisfaction Guarantee — If you're not 100% satisfied with our items, simply return it for refund within 30 days. Support 12-month Warranty. Professional & Sincere Service allows you to take no risks to purchase in E-cowlboy!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B088R9QNXM |
| Best Sellers Rank | #60,062 in Automotive ( See Top 100 in Automotive ) #344 in Engine Tools |
| Brand | E-cowlboy |
| Color | Red |
| Customer Reviews | 4.2 4.2 out of 5 stars (71) |
| Date First Available | May 19, 2020 |
| Item Weight | 11.42 pounds |
| Manufacturer | E-cowlboy |
| Manufacturer Part Number | EC - Tool&RingKit |
| Material | Alloy Steel |
| Number of Pieces | 4 |
| Package Dimensions | 16.65 x 7.68 x 3.7 inches |
| Set Name | 4 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** E-cowlboy
- **Color:** Red
- **Manufacturer:** E-cowlboy
- **Material:** Alloy Steel
- **Unit Count:** 1.0 Count

## Images

![7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS) - Image 1](https://m.media-amazon.com/images/I/610tbjr1c8L.jpg)
![7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS) - Image 2](https://m.media-amazon.com/images/I/619qz51hJ3L.jpg)
![7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS) - Image 3](https://m.media-amazon.com/images/I/61U9+GzbUEL.jpg)
![7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS) - Image 4](https://m.media-amazon.com/images/I/61cnDpyq1vL.jpg)
![7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring for Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS) - Image 5](https://m.media-amazon.com/images/I/71Q7+6HTy6L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Does generator gas tank need to be full? Also the vent on the external tank open or closed?**
A: Helps if the gas tank is full. Vent open

**Q: How do you hook from the cap to an external gas tank?**
A: I used a boat gas connection and hose to a boat gas can

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very please with product ! Heavy Duty
*by A***N on July 24, 2022*

very pleased ,

### ⭐⭐⭐⭐⭐ Good Quality
*by C***T on May 26, 2019*

Very good quality and fits perfectly. A great value !

### ⭐⭐⭐⭐⭐ Worked great for x15 Cummins
*by A***R on December 6, 2025*

Worked excellent x15

## Frequently Bought Together

- 7040 Piston Ring Compressor Tool+Adapter+Anti-Polishing Ring For Cummins ISX/QSX, Caterpillar 3400, C-15 5.4" bore Alternative PT-7040 5394454 5299448 5299447 5299339 (4 PCS)
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**Shop now:** [https://www.desertcart.mx/products/209504549-7040-piston-ring-compressor-tool-adapter-anti-polishing-ring-cummins](https://www.desertcart.mx/products/209504549-7040-piston-ring-compressor-tool-adapter-anti-polishing-ring-cummins)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-20*