Fast & Free Shipping

Same Day Shipping before 11pm. Free Shipping Over $15.

PRE-SALE SPELAB 2.5" Inlet/Outlet Universal Catalytic Converter, with O2 Port (EPA Compliant)

In stock
Vehicles & Parts > Vehicle Parts & Accessories > Motor Vehicle Parts > Motor Vehicle Exhaust

Catalytic converters change harmful substances in a car’s exhaust gasses, such as carbon monoxide, nitric oxide, nitrogen dioxide and hydrocarbons, into less harmful substances like carbon dioxide and water vapour by means of chemical reactions.

The interior of the ‘cat’ is usually filled with a honeycomb structure onto which a coating is applied that contains a catalyst - the substance that creates a reaction with the exhaust gasses, changing their chemical structure. Precious metals like palladium, rhodium and platinum are commonly used as the catalyst.

There are various types of catalytic converter. A simple ‘two-way’ oxidation cat works to turn carbon monoxide (CO) to carbon dioxide (CO2) and hydrocarbons, which are basically particles of unburnt fuel, to carbon dioxide and water. More advanced ‘three-way’ catalytic converters are fitted to modern cars and these do the above while also reducing emissions of nitric oxide (NO) and nitrogen dioxide (NO2) which together are more commonly known as NOx, a major cause of localised air pollution.


Details and Specifications:
SKU: ES27004
Color: Silver
Weight: 1500g
Size: 30*11*11cm
Type: 2.5 inch universal catalytic converter

Fitment and Notes:
2.5" ID Inlet/Outlet Universal Catalytic Converter, please make sure the exhaust pipe is 2.5 inch OD.
It’s illegal for use on vehicles required to meet California emission standards. ITEM NOT SALE IN CA & NY.

Meet or exceed OEM standards. Made from HD-Stainless steel, High flow design to provide more oxygen to your engine for an increase in power and performance, fully tested under the extreme conditions for heat resistance and service life.
Catalytic converter composed of shell, shock-absorbing layer, substrate, carrier, and catalyst.
The substrate material of the catalyst is mainly honeycomb ceramics, the structure increased the effective contact area with the exhaust gas to the most. Ceramics provide strength with lower density, the resistance of high temperature, small coefficient of thermal expansion, etc.
The carrier coating is usually Alumina (Al2O3), which compatibility both well with ceramics and catalyst, and provide good specific surface area and thermal stability.
And the precious metal catalyst is Rh, Pt, Pd. (Platinum Group Metals)

  • Lower auto exhaust back pressure
  • Reduces the emission of NOx
  • More horsepower
  • Free up torque
  • Much better sound

Cutting and welding may require, professional installation is highly recommended.

Attention during Usage:
  • Do not use leaded gasoline.
  • Do not run fast for a long time (open-loop control state).
  • Do not allow the engine speed to change quickly.
  • The ignition time should not be too late.
  • It won't start for a long time.
  • Do not pull out the high-voltage line for a long time to test.
  • When measuring the cylinder pressure, unplug the central control connector of the fuel pump, so that the injector can stop the injection of fuel into the cylinder.
  • When it is found that the cylinder is not working properly, it should be stopped in time for inspection and troubleshooting.
  • Avoid factors to a rich mixture, such as inadequate closing of the fuel injector, failure of the fuel pressure regulator, failure of the oxygen sensor, and failure of the air flow sensor
  • As long as the catalytic converter is used correctly, it generally does not require maintenance, so do not disassemble it casually. If it needs to be replaced, it must be matched with the engine.

Backed in 12 months or 50,000 miles limited warranty, for any manufacturer defect. Make sure this item fits your vehicle first, thanks a bunch!

Customer Reviews

No reviews yet

Thanks for shopping at SPELAB.

If you are not entirely satisfied with your purchase, we're here to help.




Cancel your order free of charge when it is unfulfilled; you can not cancel order once it is fulfilled.




You have 14 calendar days to return the item from the date you received it.


To be eligible for a return, your item must be unused and in the same condition that you received it. Your item must be in the original packaging with their tags still attached. Please make sure when returning something that you securely package the item as anything damaged in the post and returned back to us due to being insufficiently packaged may receive no refund.


Please contact us at any time from Monday to Friday within 14 days after you received the item. Email us at Return shipping address will be provided.


You are to return the item at your own expense. We'll pay the return shipping costs if the return is a result of our error (you received an incorrect item, etc.).




Once we receive your item, we will inspect it.


Ensure you enclose the correct and complete item when making a return. We need the correct item returned in order to grant a refund or a replacement. It can take up to 25 days for an item to be inspected after reaching. After the inspection, it takes 2 business days for the refund to be processed. You will receive the credit within a certain amount of days, depending on your card issuer's policies. Refunds will be issued back to the original method of payment or credit card only.




Provide 12-month product warranty. When you meet any problem about Spelab product, contact us freely.


Installation of auto parts should be handled by a Certified Automotive Technician, and you should maintain a copy of the repair order after the repair is completed for your records. Remember, that having a certified technician install a part does not necessarily mean it was properly installed, but it will eliminate more of the common errors. On occasion, we may ask for the original repair order and other documentation regarding the repair to be sent to us in order to process the return. If your part is found to be defective, we'll send you the auto  parts or refund you if necessary.


If you are not satisfied with our products, please contact us first, before you leave any comments. We are dedicated to assuring that you will get top quality products and service.




Our products are free shipping with orders over $15.


Normally, we will ship the product customer ordered from the nearest warehouse. Customers will get their items in 5-10 work days. However, we can not promise products customers want are in stock every time. Transfer cargo needs more time.


You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are nonrefundable.


Contact Us


If you have any questions on how to return your item to us, contact us.

Recently Viewed Products

Customer Reviews

No reviews yet
Custom Auto Parts Service
Free Returns in store
Secure Shopping
24.7 Help Center
You have successfully subscribed!