Catalytic Converter Theft Protection: The Skid Plate Guide.
Deter catalytic converter theft with a 1/4 inch aluminum plate that blocks access to the converter. Cat-shield skid plates by vehicle — F-150, Super Duty, Sprinter, ProMaster & more. Made in Colorado, lifetime warranty, Denver install.
Deter catalytic converter theft with a 1/4 inch aluminum plate that blocks access to the converter. Cat-shield skid plates by vehicle — F-150, Super Duty, Sprinter, ProMaster & more. Made in Colorado, lifetime warranty, Denver install.
One of the most effective ways to deter catalytic converter theft is to physically block access to the converter with a steel-or-aluminum shield bolted across the underbody. Etching, cages, alarms, and paint all slow a thief down; a 1/4″ plate that covers the converter makes the cut far harder — most thieves move on to an easier target. If you drive a Ford, Ram ProMaster, Mercedes Sprinter, Chevy, GMC, or Nissan and want a guard that does double duty as off-road armor, this guide walks through your real options by vehicle — including honest tradeoffs on our own plates. Start with our transmission & cat-shield skid plates if you're on an F-150, or jump to your platform below.
A catalytic converter sits low and exposed under most trucks and vans, and with cordless tools it can take just minutes to cut out. A replacement converter plus labor commonly runs well over $1,000 — and on a diesel Sprinter, several times that — plus days or weeks of downtime waiting on parts. A skid plate is one of the cheapest deterrents you can bolt on.
We make these in Wheat Ridge / Denver, CO and install them too. Most plates ship the next business day, or book an install at our Denver shop.
What we see in our shop
The pattern in our orders — and in the vehicles that come through the Denver shop — is consistent:
- Full-size trucks and tall vans get hit most. Pickups, the Mercedes Sprinter, and the Ram ProMaster are prime targets — high ground clearance means a thief can slide right under without a jack.
- F-150 and Super Duty owners buy the transmission + cat shield as their first real armor. The F-150 Transmission Skid Plate & Cat Shield is one of our most popular plates because it protects the two things most likely to cost you — the transmission and the converter — in one piece.
- Theft protection and off-road protection are the same plate. The 1/4″ aluminum that resists a recip-saw blade is the same plate that shrugs off a gravel strike. You're not choosing between “anti-theft” and “skid plate” — it's one part.
- We see these trucks in person. We've installed these plates on Fords, Rams, and Mercedes vans across the Denver shop — so the fitment notes below come from actually putting them on customer vehicles, not a spec sheet.
Why a skid plate beats etching, cages, and alarms
Short answer: it's the only common option that physically blocks access to the converter, instead of just trying to discourage a thief. Here's the honest comparison:
| Method | How it works | Reality |
|---|---|---|
| Skid plate / cat shield | Bolts a solid plate across the converter — blocks direct access | Permanent, no false alarms, doubles as off-road armor. Highest up-front cost. |
| Etching / VIN marking | Marks the converter so it's traceable | Cheap, but does nothing to block the cut — only helps after the fact |
| Steel cage / rebar shield | Welds a cage around the converter | Slows a thief; cheaper cages can still be cut or pried; rarely doubles as armor |
| Alarm / tilt sensor | Sounds when the vehicle is jostled | False-alarms constantly; most people ignore car alarms |
| Parking habits / lighting | Lower the odds of being targeted | Free and worth doing — but not a physical barrier |
Layer them if you want, but the plate is the part that physically gets in the way.
Catalytic converter protection by vehicle
Juggernaut plates are CNC plasma-cut from 1/4″ 5052-H32 aluminum, press-brake folded, powder-coated black, and bolt on with no drilling. Lifetime warranty, made in Colorado. Find your vehicle below.
Ford F-150 Transmission Skid Plate & Cat Shield — $524.95
Shop the F-150 transmission + cat shield →
Protects the transmission and the catalytic converter in one plate — the most popular “start here” armor for 2015–2026 F-150 owners. Same 1/4″ aluminum, same lifetime warranty. Tradeoff: it doesn't cover the engine oil pan or transfer case — if you want the whole underbody, step up to the F-150 Full Skid Plate Package and save vs. buying the plates individually.
Ford Super Duty Engine & Transmission Skid Plate (F-250 to F-550) — $594.95
Shop the Super Duty engine + trans skid →
Covers the engine, transmission, and the catalytic-converter run on the 2020–2026 Super Duty (F-250, F-350, F-450, F-550, F-600) — the exposed area a thief goes for. Tradeoff: for the full underbody (adds the transfer case + fuel tank), step up to the Super Duty Skid Plate Package.
Ford Ranger / Ranger Raptor Transmission Skid Plate & Cat Shield — $524.95
Shop the Ranger transmission + cat shield →
Covers the transmission and converter on the 2024–2026 Ranger and Ranger Raptor. Tradeoff: newer platform, so confirm your trim if you've added a non-OEM front end. Build out full coverage from the Ranger collection.
Ford Expedition Transmission Skid Plate & Cat Shield — $524.95
Shop the Expedition transmission + cat shield →
The SUV version of the F-150 plate — covers the transmission and converter on the 2018–2026 Expedition. Same material, same warranty. See the full Expedition lineup.
Chevy Silverado & GMC Sierra 1500 Transmission Skid Plate & Cat Shield — $524.95 each
Shop it for your truck: Chevy Silverado 1500 → · GMC Sierra 1500 →
Converter + transmission protection for the 2019–2026 GM 1500 twins. Newer additions to the catalog, same 1/4″ aluminum build. Tradeoff: fewer field installs on these so far — email us your exact year/trim and we'll confirm fitment before you order.
Ram ProMaster Front Skid Plate — Engine, Transmission & Catalytic Converter — $779.95
Shop the ProMaster front skid plate →
One plate that covers the engine, transmission, and catalytic converter — the full vulnerable run under the front of the van. ProMasters are heavily targeted, and this closes off the whole area in one bolt-on piece. Tradeoff: it's a front-section plate, not full-length underbody coverage — if you're building a serious off-road rig, look at the rest of the ProMaster armor lineup too, or read our full Ram ProMaster exterior upgrade guide.
Mercedes Sprinter Catalytic Converter Guard & Shield — $595.95
Purpose-built to block converter access on the 2006–2026 Sprinter. Fits a huge model range (gas and diesel, 2WD/4x4/AWD across generations). If theft is your only concern, this is the targeted, lower-cost answer. Tradeoff: it's a converter shield, not a full skid plate — if you also wheel the van, pair it with the engine/transmission and transfer-case plates from the Sprinter skid plate collection.
Nissan NV1500/2500/3500 Transmission Skid Plate & Cat Shield — $495.00
Shop the Nissan NV transmission + cat shield →
Cat + transmission coverage for the 2011–2021 Nissan NV vans — a frequently-targeted, hard-to-find-parts-for platform. Niche, but if you've got an NV, almost nobody else makes this.
Other heavy-duty trucks (Silverado/Sierra 2500HD/3500HD) and Chevy Colorado / GMC Canyon also get cat coverage in their transmission/cat plates and packages. Email us your platform and we'll point you to the right plate.
How the install works
These are bolt-on, no-drill plates — they use existing factory mounting points and ship with hardware and instructions. Most owners do it in their driveway with hand tools in under an hour. The oil-drain and service cutouts mean you don't have to pull the plate for routine maintenance.
Don't want to get under the truck? We install every plate above at our Denver-area shop in Wheat Ridge. If you're lifting the vehicle anyway, do both in one visit — once you raise a truck or van, the underbody sits right where it'll take hits, so armor and a lift are a natural pairing. Call or text (970) 341-4221 for an install estimate.
Frequently asked questions
Does a skid plate actually stop catalytic converter theft?
It's the strongest deterrent available — a solid plate bolted across the converter physically blocks access, so a thief can't easily get a saw or wrench to it, and most move on to an easier target. It's the only common method that blocks the cut rather than just discouraging it.
Will a cat shield make it harder to service my vehicle?
No. Our plates have oil-drain and service cutouts and use factory mounting points, so routine maintenance doesn't require removing the plate.
Aluminum or steel for catalytic converter protection?
Both work as a physical barrier. We use 1/4″ 5052-H32 aluminum because it takes real abuse, won't rust against the underbody, and adds far less weight than equivalent steel — important on already-heavy vans and trucks.
Which vehicles are targeted most for catalytic converter theft?
High-clearance trucks and vans are easiest to get under — full-size pickups, the Mercedes Sprinter, and the Ram ProMaster especially.
How fast does it ship, and can you install it?
Most plates ship the next business day from our Colorado shop. We also install them at our Wheat Ridge / Denver shop — call or text (970) 341-4221.
Get protected
Shop your plate — find your vehicle above, order it, and we'll ship it; bolt-on, no drilling, hardware and instructions included.
Or have us install it in Denver — we install cat shields and full skid plate packages at our shop in Wheat Ridge, CO. Call or text (970) 341-4221 for an estimate.
Not sure which plate covers your converter? Email sales@juggernautusa.com or call (970) 341-4221 with your year, make, model, and trim and we'll confirm fitment before you buy. Every plate carries a lifetime warranty and is backed by our 4.9★ review rating.
Don't see your vehicle? Email us — we're adding platforms constantly and can tell you what's in development.
Fitment varies by year, make, and trim. Always confirm your exact vehicle before ordering — we check fitment free with every quote.
Tell us your year, make, and model — we'll confirm fitment and quote parts + professional install.
