2020-2025
2015-2019
2007-2014
2001-2006
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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FS Performance Engineering Catalytic Converter Guard (20-25 6.6L Duramax Silverado 3500 HD)Find parts that fit my vehicle
Item SHS25577
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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6 Reviews
Our Price
$399.00 each
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Catalytic Converter Guard
- Intensive Underside Guarding
- Protects Your Vehicle's Essential Exhaust Components
- Negates Clogging and Pipe Damage
- Crafted from Thick 3/16-Inch Steel
- Anti-Rust Black Coating
- Ventilated and CNC-Drilled
- Basic DIY No-Drill Installation
- Fits 2020-2025 6.6L Duramax Chevrolet Silverado 3500 HD Models
Description
Essential Protection. The FS Performance Engineering Catalytic Converter Guard is a vital component for your truck, designed to shield the essential exhaust parts from damage and clogging. It's specifically engineered to withstand harsh conditions and protect against physical impacts.
Construction and Appearance. This guard is crafted from thick 3/16-inch steel, ensuring durability and resistance to deformation. It features an anti-rust black coating, which provides additional protection from the elements, and is ventilated and CNC-drilled to allow for proper exhaust flow and cooling.
Other Features. The FS Performance Engineering Catalytic Converter Guard includes a ventilated design that helps maintain the optimal operating temperature of the catalytic converter, thus ensuring its efficiency and longevity.
Installation. This guard offers a basic DIY no-drill installation, making it accessible for most vehicle owners to fit without professional help. Installation is straightforward and does not require any drilling, ensuring that your vehicle remains unaltered.
Application. This FS Performance Engineering Catalytic Converter Guard fits 2020-2025 6.6L Duramax Chevrolet Silverado 3500 HD models.
Fitment:
- 2020 Chevrolet Silverado 3500
- 2021 Chevrolet Silverado 3500
- 2022 Chevrolet Silverado 3500
- 2023 Chevrolet Silverado 3500
- 2024 Chevrolet Silverado 3500
- 2025 Chevrolet Silverado 3500
FS Performance Engineering FSPE4-2500-1
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Catalytic Converter Guard
4.7
Customer Reviews (6)
Jun 4, 2024
Review shared from FS Performance Engineering Catalytic Converter Guard (14-18 V8 Silverado 1500)
2014 High Country - Efficient
Installation Time: Afternoon
Catalytic Converter Guard
With the increase of Catalytic Converter thefts, I was looking for a quality cover. This product fit all of my requirements. Easy to install, and allows for oil changes without removing the cover. Heavy steel components. I would recommend this product for peace of mind.
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Feb 23, 2024
Review shared from FS Performance Engineering Catalytic Converter Guard (15-25 F-150, Excluding PowerBoost & PowerStroke)
Lawdog
Installation Time: Afternoon
Great shield
This is a well made product that fits well on my 2020 F-150.
Fit 4/5
Quality 5/5
Bang For Your Buck 4/5
Nov 13, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (15-25 F-150, Excluding PowerBoost & PowerStroke)
2023 Platinum - Mspenc45
Installation Time: Less than 1 Hour
Lightweight quality
This guard is aluminum, so it's lightweight. Bends in the right places make it solid and strong.
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Oct 31, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (19-25 3.0L Duramax Silverado 1500)
2023 LT - Undefeated
Installation Time: Afternoon
Cat guard for Duramax
One of the best items I bought for my truck. This will definitely bring you peace of mind. I saw someone on my blink camera look under my truck, then walk away cursing.
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Aug 19, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (19-25 V8 Silverado 1500)
2022 LTZ - BillyNol
Installation Time: Afternoon
FSPE Cat Guard
Pretty easy install. 2 people would have helped, but went ok with just me. Rivet nut diy hack video from spyderindustries.com worked like a charm.
Fit 5/5
Quality 5/5
Bang For Your Buck 4/5
Mar 19, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (19-25 V8 Silverado 1500)
2021 Custom Trail Boss - 91A
Installation Time: Shop Install
Solid guard
Solid piece that won’t come off from thieves! Cat is fully guarded. Highly recommend to prevent theft.
Fit 5/5
Quality 5/5
Bang For Your Buck 4/5
Reviews of FS Performance Engineering Exhaust products have an average rating of 4.7 out of 5
Jun 4, 2024
Review shared from FS Performance Engineering Catalytic Converter Guard (14-18 V8 Silverado 1500)
2014 High Country - Efficient
Catalytic Converter Guard
With the increase of Catalytic Converter thefts, I was looking for a quality cover. This product fit all of my requirements. Easy to install, and allows for oil changes without removing the cover. Heavy steel components. I would recommend this product for peace of mind.
Feb 23, 2024
Review shared from FS Performance Engineering Catalytic Converter Guard (15-25 F-150, Excluding PowerBoost & PowerStroke)
Lawdog
Great shield
This is a well made product that fits well on my 2020 F-150.
Nov 13, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (15-25 F-150, Excluding PowerBoost & PowerStroke)
2023 Platinum - Mspenc45
Lightweight quality
This guard is aluminum, so it's lightweight. Bends in the right places make it solid and strong.
Oct 31, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (19-25 3.0L Duramax Silverado 1500)
2023 LT - Undefeated
Cat guard for Duramax
One of the best items I bought for my truck. This will definitely bring you peace of mind. I saw someone on my blink camera look under my truck, then walk away cursing.
Aug 19, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (19-25 V8 Silverado 1500)
2022 LTZ - BillyNol
FSPE Cat Guard
Pretty easy install. 2 people would have helped, but went ok with just me. Rivet nut diy hack video from spyderindustries.com worked like a charm.
Mar 19, 2023
Review shared from FS Performance Engineering Catalytic Converter Guard (19-25 V8 Silverado 1500)
2021 Custom Trail Boss - 91A
Solid guard
Solid piece that won’t come off from thieves! Cat is fully guarded. Highly recommend to prevent theft.
Questions & Answers
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Will It Fit My Silverado 3500
- 6.6L V8 Duramax - 20, 21, 22, 23, 24, 25
