Steve_DIYer_41
My car was running rough and failing emissions. This converter fixed everything. It's running smooth and quiet now, couldn't be happier.
2026-01-12
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3" Inlet / Outlet, 2-PC Universal Catalytic Converter , W/O O2 Senso, Fit Federal Emissions, PHILTOP
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SKU: 91ISEXP1807US
$114.77
In Stock
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Select Year, Make, and Model before checkout.
Reviews
Rob_HomeGarage_335
Got here super fast and fit perfectly. Installation was a breeze, didn't run into any problems at all. Happy with the speedy delivery.
2025-12-12
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45-Day Free Returns
3-Year Warranty
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Compatible Vehicles
Check if this fits your vehicle
| Year | Make | Model | Trim | Engine |
|---|---|---|---|---|
| 2001 - 2003 | Audi | S8 | Base | 4.2L V8 |
| 2001 - 2005 | Buick | Century | Custom | 3.1L V6 |
| 2001 - 2002 | Buick | Century | Limited | 3.1L V6 |
| 2004 - 2005 | Buick | Century | Limited | 3.1L V6 |
| 2005 | Buick | Century | Special Edition | 3.1L V6 |
+5
About This Product
Product Specifications
- Brand
- PHILTOP
- O2 Sensor Port
- Not Included
- Labels & Certifications
- EPA
- Condition
- New
- Body Length
- 11"
- Clamps Included
- No
- Outlet Diameter
- 3"
- Inlet Diameter
- 3"
- Outlet Type
- Weld On
- Inlet Type
- Weld On
- Quantity
- 2Pcs
- Notes
- Federal EPA Standard, 46-State Legal (Not applicable to vehicles purchased in CA, CO, NY or ME.)
- Connection Type
- Weld-on
- Placement on Vehicle
- Front, Rear
- Body Material
- Stainless Steel
- Substrate Material
- Ceramic
Product Description
Reviews
4.7/5
Based on 10 reviews
5
80%
4
10%
3
10%
2
0%
1
0%
Steve_DIYer_41
My car was running rough and failing emissions. This converter fixed everything. It's running smooth and quiet now, couldn't be happier.
2026-01-12
Rob_HomeGarage_335
Got here super fast and fit perfectly. Installation was a breeze, didn't run into any problems at all. Happy with the speedy delivery.
2025-12-12
FAQS
Fitment depends on your vehicle's specific engine and year. To be 100% sure, please enter your vehicle's Brand, Year, and Model into the "Fitment Checker" at the top of the page. If it shows a "Match," this part is engineered specifically for your vehicle.
Yes, this unit is fully EPA-compliant and meets federal emissions standards. You can verify the EPA certification stamps and specific engineering standards by looking through the "Technical Specs" section below.
Installation difficulty depends on your vehicle's exhaust layout. Most of our units are "Direct-Fit," but some may require more effort than others. Please check the "Installation Guide" or product photos on this page to see the specific bolt patterns and connection points for this model.