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Up to 25% Off Online Orders of Select Parts & Accessories. Enter Promo Code MMJ25 in Cart.

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Receive Up To 25% Off Your Online Purchase Of Select Parts and Accessories Instantly

When items are added to the cart, the discount will automatically deduct off the price of the qualifying items. Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installation, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes select products, items already on sale and MAP priced brands & items. For full category inclusions and disclaimers, See Details Here. Valid online until 11:59 PM EST on 6/30/18.

Additional Promotions Not Included in the above:

Receive 20% Off Select Wagner branded brake parts with your online purchase.

Receive 10% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP10.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.



Your vehicle’s catalytic converter is a component of the emissions system. Two-way catalytic converters are often used with diesel engines while three-way catalytic converters are frequently used in passenger vehicles.



What is a Catalytic Converter?

The catalytic converter is a vital part of your vehicle emissions control system. Its job is to reduce toxic air by converting harmful pollutants into less harmful emissions, such as water, carbon dioxide and nitrogen.

How do Catalytic Converters Work?

In the catalytic converter, there are two different types of catalysts: a reduction catalyst and an oxidation catalyst. The catalytic converter works with your vehicle’s powertrain control module (PCM) and other emissions control devices. It has no moving parts, and is designed to last the life of your car.

How are Catalytic Converters Made?

Catalytic converters typically are constructed with a stainless-steel body with monolithic free-flowing substrate, body and pipe heat shields, catalyst cushioning mat, and oxygen sensors.

Why do Car Lights Fail?

  • Overheated, melted or broken converters
  • Coated or oil-fouled substrate
  • Structural damage from corrosion, thermal shock, metal fatigue, stripped oxygen sensor threads, or flex pipe failure

What are Symptoms of Car Light Failure?

  • No acceleration when gas pedal pushed
  • Drop in gas mileage
  • Engine quits after a few minutes

What are Implications of Car Light Failure?

  • Engine stalling
  • Engine failure
  • Inability to drive

If you have questions or concerns about catalytic converters, your vehicle’s emissions system, or any of your vehicle’s systems or system components, come into your local Pep Boys where we can answer any question, help you find any car part or perform any vehicle service you might need. From information to installation - our ASE certified technicians are here to help you… and your vehicle!

If you want to learn more about other car parts, especially as they apply to your catalytic converter, we recommend reading up on mass air flow sensors, oxygen sensors and PCV valves