1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Flowmaster 615023 Delta Force Performance Panel Air Filter. This premium air filter is designed to replace the factory air filter in compatible 2002-2020 Dodge/Ram 1500/2500/3500 vehicles equipped with V6 and V8 gas engines. It features a high-flow, multi-layered, pre-oiled woven cotton gauze filtration media for enhanced performance and filtration.
2. Package Contents
Verify that all components are present before beginning installation:
- One (1) Flowmaster 615023 Delta Force Performance Panel Air Filter (Dimensions: 13.75 in. Overall Length, 9.313 in. Overall Width, 1.563 in. Overall Height)

Image 2.1: The Flowmaster 615023 Delta Force Performance Panel Air Filter, featuring its red woven cotton gauze media and black urethane frame.
3. Product Features
- Multi-layered Pre-oiled Woven Cotton Gauze filtration media.
- Designed for increased performance and filtration efficiency.
- Direct replacement for factory paper air filters.
- Serviceable and reusable with the Delta Force Refresh Kit (Part #615001).
4. Installation Instructions
The Flowmaster 615023 air filter is designed for a direct, drop-in replacement into your vehicle's factory airbox. No modifications are typically required.
- Safety First: Ensure the vehicle's engine is off and cool. Disconnect the negative terminal of the battery if required by your vehicle's service manual for air intake work.
- Locate Airbox: Identify the factory airbox in your engine compartment. Refer to your vehicle's owner's manual for its exact location.
- Open Airbox: Unclip or unscrew the fasteners securing the airbox lid. Carefully lift and remove the airbox lid.
- Remove Old Filter: Take out the existing paper air filter. Note its orientation for proper installation of the new filter.
- Clean Airbox: Inspect the airbox for any debris, leaves, or dust. Clean the interior of the airbox thoroughly before installing the new filter.
- Install New Filter: Carefully place the Flowmaster 615023 Delta Force Performance Panel Air Filter into the airbox. Ensure it sits snugly and correctly within the designated slot, with the black urethane outer frame/seal creating a proper seal.
- Secure Airbox: Reinstall the airbox lid, ensuring all clips or screws are securely fastened. Verify that the airbox is properly sealed to prevent unfiltered air from entering the engine.
- Reconnect Battery: If disconnected, reconnect the negative battery terminal.

Image 4.1: The Flowmaster 615023 air filter properly installed within a vehicle's factory airbox.
5. Operating Instructions
Once correctly installed, the Flowmaster 615023 Delta Force Performance Panel Air Filter operates passively as part of your vehicle's air intake system. No further user interaction is required for its operation. The filter continuously works to provide clean, filtered air to your engine while enhancing airflow.
6. Maintenance
To ensure optimal performance and longevity of your Flowmaster Delta Force air filter, regular maintenance is recommended. Unlike disposable paper filters, this filter is reusable and can be cleaned.
- Cleaning: The filter should be cleaned and re-oiled periodically based on driving conditions and mileage. Flowmaster recommends using the Delta Force Performance Filter Refresh Kit (Part #615001) for proper cleaning and re-oiling. Follow the instructions provided with the refresh kit.
- Inspection: Regularly inspect the filter for any signs of damage, tears, or excessive dirt buildup. Replace the filter if any damage is observed.
- Maintenance Schedule: Refer to your vehicle's owner's manual or a qualified mechanic for recommended air filter inspection intervals. Adjust the cleaning frequency based on your driving environment (e.g., dusty conditions may require more frequent cleaning).
7. Troubleshooting
If you experience any issues after installing your Flowmaster air filter, consider the following:
- Improper Fitment: Ensure the filter is seated correctly and snugly within the airbox, and the airbox lid is securely fastened. An improper seal can lead to unfiltered air entering the engine.
- Check Engine Light: If a check engine light illuminates after installation, verify all connections to the air intake system (e.g., Mass Air Flow sensor) are secure and undamaged. Disconnect and reconnect the battery to reset the vehicle's computer if necessary, or consult a qualified mechanic.
- Reduced Performance: If performance issues arise, ensure the filter is clean and properly oiled. An over-oiled or under-oiled filter can affect performance.
8. Specifications
| Specification | Detail |
|---|---|
| Brand | Flowmaster |
| Model Number | 615023 |
| OEM Part Number | 615023 |
| Shape | Panel (Flat) |
| Filtration Media | Multi-layered Pre-oiled Woven Cotton Gauze |
| Automotive Fit Type | Vehicle Specific Fit |
| Item Weight | 2.16 pounds |
| Product Dimensions | 1.88 x 10.38 x 16.13 inches |
| UPC | 700042038282 |
9. Warranty Information
For detailed warranty information regarding the Flowmaster 615023 Delta Force Performance Panel Air Filter, please refer to the official Flowmaster website or the warranty documentation included with your purchase. Warranty terms and conditions may vary.
10. Support
If you require further assistance or have questions not covered in this manual, please visit the official Flowmaster website for support resources, FAQs, and contact information for customer service.





