O2 Sensor Socket Set - 3/8" & 1/2" Drive, 7/8" & 22mm O2 Sensor Wrenches & Thread Chasers

There are many reasons why the Check Engine Light (CEL) may turn on. Use an OBD-II scanner to retrieve the trouble codes stored in the Powertrain Control Module (PCM). A faulty catalytic converter is the most common cause of P0420/P0042/P0430 codes. When the catalytic converter’s efficiency decreases or it becomes damaged, exhaust pollutants are not fully converted, which triggers the Check Engine Light (CEL, SES, DTC).

There are four common indicators of a faulty catalytic converter:

1. Check Engine Light (CEL): A common sign of a faulty catalytic converter, often triggering P0420 (Catalyst System Efficiency Below Threshold Bank 1) and/or P0430 codes.
2. Lack of Power: Noticeable power drop after the vehicle warms up.
3. Speed Limitation: The vehicle may struggle to exceed speeds of 30-40 mph (approximately 48-64 km/h).
4. Unpleasant Odors: A rotten egg smell coming from the exhaust.

If you detect P0420, P0430, or P0042 codes, our product will be your ideal solution.

Note: Don't just rely on using an extender, as they often don't work. Our O2 CEL FIX is an innovative solution that incorporates a built-in mini catalytic converter (Mini Cats) meeting European 5 standards. It is specifically designed to effectively resolve CEL issues caused by high-flow catalytic converters (HIFLOW Cat) or deleted catalytic converters in the exhaust system.

The principle is as follows: First, by adjusting the position of the second O2 sensor, moving it away from the direct exhaust flow, our built-in mini catalytic converter begins to function. Its operation is similar to that of a traditional catalytic converter, converting harmful exhaust gases into harmless substances, effectively "tricking" the ECU into thinking the catalytic converter is still working. This helps eliminate the annoying Check Engine Light (CEL) and resolve persistent error codes like P0420 and P0430. This is especially suitable for vehicles with modified exhaust systems or those that have removed the stock catalytic converter.

A worn-out oxygen sensor leads to excessive gasoline consumption, increased emissions, and accelerated catalytic converter damage. Our NEW Oxygen Sensor Replacement Kit addresses these issues, optimizing fuel efficiency, reducing emissions, and making the engine more eco-friendly.

In regions with emission-regulated vehicle inspection programs, a faulty Check Engine Light (CEL) and O2 sensor may lead to inspection failure. Our kit ensures compliance, allowing your vehicle to pass inspections smoothly.

Our kit provides a practical solution to common fault codes such as P0420, P0042, and P0430, ensuring your vehicle runs smoothly and minimizing the risk of more significant problems.

The Mini Catalizador is made from T-304 stainless steel, which offers excellent corrosion resistance, rust resistance, anti-flaking, and anti-bubbling properties.

Compared to other similar products, the advantages of Mini Catalizador include:

Material: The Mini Catalizador uses T-304 stainless steel, while some other products may use galvanized carbon steel filled with steel wool. Galvanized carbon steel can bubble, flake, and rust in high-temperature environments, while T-304 stainless steel has better high-temperature performance and corrosion resistance, allowing it to operate stably at temperatures exceeding 620°F.

Durability: Due to the use of high-quality stainless steel, the Mini Catalizador will not rust, corrode, or suffer other damage, making it more durable than many cheaper products. This reduces issues caused by metal corrosion.

Efficiency: The Mini Catalizador is equipped with a three-way ceramic honeycomb element coated with platinum, rhodium, and palladium, which effectively converts harmful exhaust gases, just like the vehicle's original catalytic converter. This helps eliminate oxygen sensor error lights (CEL). In contrast, some cheaper products may lack this conversion efficiency, leading to more frequent failures.

Easy Installation: The Mini Catalizador is very easy to install, requiring no welding or cutting—simply screw it into the existing O2 sensor interface. This makes it more convenient than other products that require complicated installation processes.

The NEW O2 Sensor Spacer is a universal product designed to fit O2 sensor interfaces with M18 x 1.5mm threads, compatible with 99% of vehicles on the market, including but not limited to BMW, Audi, Toyota, Nissan, Honda, Ford, Chevy, Subaru, Mazda, Volkswagen, Mitsubishi, Hyundai, Kia, Lexus, Chrysler, Dodge, and more.

The Mini Catalizador is available in three angle options: 0° (straight), 45°, and 90°, and is compatible with all vehicles equipped with M18 x 1.5mm O2 sensor bungs. The choice of the appropriate model typically depends on the space available at the O2 sensor location. If the exhaust system has tight or hard-to-reach spaces, a 45° or 90° spacer may be more suitable. Please select the angle based on your vehicle’s exhaust system layout for the best fit during installation.

For vehicles with a dual exhaust system or V6/V8 engines, two Mini Catalizadores are typically required (one for each exhaust pipe). Since each exhaust pipe has a post-cat O2 sensor (located after the catalytic converter), a Mini Catalizador is needed for each post-O2 sensor to ensure the exhaust system operates correctly and to prevent triggering the check engine light (CEL). If your vehicle has a single exhaust system, only one Mini Catalizador is needed.

Installation Steps:

• Jack up car if necessary, find extended bung which need to replace.
• Loosen old oxygen sensor spacer, bolt it on our new sensor spacer.
• Bolt new sensor spacer to pipe by hand firstly. Tighten with a wrench.
• Please click the link https://www.minicatalizador.com/pages/how-to-install to watch the installation video.

Note: Before installation, make sure all parts of the product are intact, and ensure that the top cover is tightly secured; otherwise, the cover may come loose and be lost.

This is a race-only product. It is not legal for sale or use on pollution-controlled vehicles that are driven on public streets, roads, or highways. Buyer's use or installation of this product for itself or for Buyer's customer is at Buyer's own risk. The Buyer is responsible for obeying federal, state, and local laws. Only Buyer can determine the end customer's use and thus assumes any and all liability, hereby waiving any and all claims against Minicatalizador.com in the sale of this product to the maximum extent permissible by law. Make sure to abide by all local, state, and federal laws, including emissions, vehicle safety, and traffic laws. It is Buyer's responsibility to know what those laws are and how they apply to Buyer or Buyer's customer. This product is designed and intended solely for legally-organized and sanctioned, closed-course, off-road competition use and is not for use on public streets, roads, or highways. This Product is capable of disabling the emissions system on some vehicles. Use on public streets, roads, or highways is a violation of federal and certain state (including California) and local environmental laws.