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Catalytic Converter Lock

  • Form a nearly unbreakable barrier around your converter with the CatClamp Catalytic Converter Lock
  • Fits most gas powered vehicles commonly targeted for cat converter theft
  • Compatible with common catalytic converter pipe diameters of 1.75" to 3"
  • Adjustable installation
  • Heavy-duty, un-cuttable wire rope acts like a cage around your converter
  • Secure design ties the converter to your frame
  • Split-collar cage ends make for an easy, bolt-on installation
  • The premium MAXX Converter Lock features 100% stainless steel construction and extra thick rope
  • Compatible with gas and small diesel engines
  • Made in the USA
  • 1-Year Warranty on standard, Lifetime Warranty on Cat Clamp MAXX

Industry reports say that the average catalytic converter thief needs nothing more than thirty seconds and a battery-powered saw blade to strip your vehicle of its converter. Usually containing palladium, platinum, and/or rhodium, a stolen catalytic converter can fetch thieves a pretty penny, not to mention cost you up to $1,000 in total repair costs to get it replaced. Protect yourself by neutralizing that saw and prolonging those precious seconds with the CatClamp Catalytic Converter Lock.

Fully stainless steel construction is the secret to the success of the CatClamp. Nearly unbreakable and impossible to saw with a standard handheld, this rope forms an impenetrable barrier around your catalytic converter. Combined with split clamp assemblies placed on each side of your car converter, this system keeps your converter safe. Split-collar cage ends allow this herculean rope to pass through it as many as eight different times, and the collars on your Toyota 4Runner, Toyota Prius, or Honda Element catalytic converter lock, or those for whatever vehicle you own, make sure everything stays in one place upon tightening.

Upgrading to the Cat Clamp MAXX lock gives you even more protection. In addition to everything you get with the standard Cat Clamp, you'll also enjoy 100% stainless steel construction of both split-collars. Don't run the risk of having to foot the bill for an expensive catalytic converter replacement. Make sure thieves will skip your car with the made in the U.S.A. CatClamp Catalytic Converter Lock. Backed by a 1-Year Warranty for the standard Cat Clamp and a Lifetime Warranty for the MAXX.

Will this fit my vehicle? Designed for a universal fit, both the Standard and MAXX Locks are designed to fit common catalytic converter pipe diameters of 1.75” to 3”. These locks work best with 3” of available space around the point of contact for each of the two clamps. Compatible with gas and small diesel engines.

CatClamp Catalytic Converter Lock Customer Reviews

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4.6 of 5

Average Install Time: 30-60 minutes

Showing 10 of 98 reviews. See All Reviews.

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The mechanics from Wonderies Collision Center took more than 2 hours to install it in my 2006 Honda Accord (not easy). They charged $150.

Install Time: 2+ Hours

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We've installed these on nearly 50 vehicles. Very happy with the Cat Clamp.

Install Time: Under 30 minutes

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Great website and good stuff. It got here super fast. That only happens with good folk on your team.

Install Time: 30-60 minutes

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It's as good as one would expect. Better to have this than nothing at all being exposed to thieves. To the thieves out there, you can suck on this!

Install Time: 30-60 minutes

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I'm very happy with this product. There has been a lot of catalytic converter theft in my neighborhood, so I was grateful to find a product that would make the theft more difficult. I had a mechanic install it and it took him between 1-2 hours, so my total price to buy and install the Cat Clamp was around $300. Considering that it would cost me between $3-5000 if my cat got stolen, I am more than willing to pay this. Since install I have forgotten it was there, but more cats have been stolen in my neighborhood! I only wish the provided stickers were larger so they could be more easily seen by potential thieves- maybe bumper sticker size. Or, I would buy one if you made one!

Install Time: 1-2 hours

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Let's start by noting that the image is misleading. It shows the two halves of the clamps butted together. Mine did not butt, even using the smallest diameter insert. That leaves the threads of the bolts open to attack with a reciprocating saw, unless you can hide one by rotating the clamp. (See below.) Cutting through only one bolt isn't going to get the clamp off your converter. Two, the image does not indicate that you receive 40 feet of cable! That's far more than was necessary for my son's CR-V. It comes with two long zip ties that allow you to coil the excess and hang it in an out-of-the-way place under the car if you can find one. (We did. They say DO NOT CUT the cable.) We did not run cable aft of the CatClamp other than as short loops because there was nothing substantial to wrap it around anywhere near the converter. We ran some of the front loops around a part of the chassis, as directed. It can be difficult to fit the cable through the clamp slots. Be sure NOT to tighten the bolts beyond lightly finger-tight or you'll never succeed. Ours began to fray, making it even more difficult. I suggest giving the tip of the cable one tapered wrap of duct tape in order to help avoid this problem. The bolts require a special tool but it's not a unique tool. Some have suggested spot welding. We managed to rotate the clamps enough after tightening one side snugly to block access to the top of the bolt. I have considered filling the top of the exposed bolt with crazy glue to prevent it from ever being removed without cutting it. I don't know how it will work in the real world but I suspect it looks messy enough to many to make them move on to the next target.

Install Time: 30-60 minutes

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A quality product. Installation was tedious because I didn’t have a lift but wasn’t that hard. I recommend this product to anyone that wants to protect their catalytic converter.

Install Time: 30-60 minutes

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It was exactly as advertised. Not a gimmick. Fit my Element perfectly.

Install Time: 1-2 hours

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Good customer service!

Install Time: 30-60 minutes

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Overall good value and only time will tell if it offers the deterrent value I bought it for. Installation went OK but a bit challenging for my Kia Optima as I had to run the cables an extra long distance at the back to catch a stationary member to loop around. I had about 2 feet of each cable to tie up and my only criticism is that it seems like something better than twist ties could have been provide. I will monitor them and, if I expect, they slip loose from vibration, I'll probably buy some cable clamps that will be more secure. Also, as others had commented, there is a bit of rattling because of the sheer number of components that the cables are close to combined with the challenge of cinching all those cable spans tight when you are tightening up the shims.

Install Time: 1-2 hours

Showing 10 of 98 reviews. See All Reviews.