Stainless Works 20-21 Ford F-250/F-350 7.3L 304L SS Resonator Delete (part # FT220RESD), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
2020–26 F-250/350 7.3L
Resonator Delete
Lifetime Warranty
Made in USA
Overview
Looking for a quick upgrade to increase the volume on your 2020–26 F-250/F-350 7.3L? Pick up this resonator delete system that only requires some minor trimming to install. Made from 304L stainless steel, this upgrade will last a lifetime.
This simple, effective modification removes the factory resonator to deliver a more aggressive exhaust note without the cost or complexity of a full catback system. It's the perfect solution for Super Duty owners who want a louder, more commanding presence on the road.
Built from corrosion-resistant 304L stainless steel and designed for a hassle-free installation — engineered for long-term durability and performance.
Why Stainless Works
- American-made from raw material to finished product
- Lifetime warranty on material and craftsmanship
- Direct bolt-on fit for 2020–26 F-250/350 7.3L
- Quick and easy upgrade with minor trimming required
- 304L stainless steel construction for lasting durability
Key Features
3" Diameter Tubing
Matches factory exhaust diameter for a seamless fit.
Includes Clamps
All necessary clamps included for installation.
Requires Minor Trimming
Simple installation with minimal cutting required.
304L Stainless Steel
Corrosion-resistant for a lifetime of reliable performance.
Quick Volume Upgrade
Increases exhaust volume without the cost of a full catback system.
No Tune Required
Simple bolt-on modification — no tuning needed.
Specifications
| Vehicle Fitment |
2020–26 Ford F-250/F-350 Super Duty 7.3L — Crew Cab & SuperCab |
| System Type |
Resonator Delete |
| Tubing Size |
3" |
| Material |
304L Stainless Steel |
| Installation |
Requires Minor Trimming |
| Included Hardware |
Clamps x2 |
| Not Compatible With |
Regular Cab Models (no OEM resonator) — Chassis Cab (CC) Models |
| Note |
Not required if ordering a full catback system |
| Warranty |
Lifetime |
| Origin |
Made in USA — Streetsboro, Ohio |
⇩ Download Installation Instructions (PDF)
What's In The Box
- Long Extension
- Short Extension
- Clamps x2
- Installation Instructions
Frequently Asked Questions
Will this resonator delete fit my 2020–26 F-250 or F-350 Super Duty?
Yes. This resonator delete is designed for the 2020–2026 Ford F-250 and F-350 Super Duty trucks equipped with the 7.3L Godzilla engine in Crew Cab and SuperCab configurations. It is not compatible with Regular Cab models (no OEM resonator) or Chassis Cab (CC) models.
Do I need this if I'm ordering a full catback system?
No. If you are ordering a full Stainless Works catback exhaust system, the resonator delete is not needed as the catback system replaces the entire exhaust from the catalytic converters back.
How difficult is the installation?
Installation is quick and straightforward. The system requires minor trimming of the factory exhaust to install. All necessary clamps are included for a secure fit.
What warranty is included?
Stainless Works provides a lifetime warranty on material and craftsmanship — covering the full life of the product, not just a limited term.
Customer Reviews
★★★★★
Exhaust delete
Verified Buyer — Phil T | July 19th, 2026
It fit exactly as described.
★★★★★
Overall Good
Verified Buyer — Kris | April 24, 2026
Simple easy mod to get a little more sound out of your exhaust without going too loud.
Questions? Call us at | Mon–Fri 7:30am–4:30pm EST
Built To Order in 4 Weeks — Free Shipping on Orders $50+
This Listing
- Brand: Stainless Works
- Part number: FT220RESD
- Product type: Resonator
- Fitment: 20-21 Ford F-250/F-350 7.3L
- Shipping weight: 8.4 lb
California Prop 65 warning applies to this product.
Fitment note: Stainless Works systems are application-specific (year, cab/bed, transmission and factory exhaust). Send us your VIN before ordering and we will confirm fitment: 954-507-6261 or sales@americanmuscleperformance.net.
