Emma_DailyCommute_440
This converter cleared up my emissions code and the car feels more powerful. It's a solid replacement for the OEM part and much cheaper.
2026-01-15
Loading vehicle options...
Choose Year, Make, and Model to check exact fitment.
Check if this fits your vehicle
Select a vehicle to check this product.
Check if this fits your vehicle
Fitment has not been checked for a vehicle.
Emma_DailyCommute_440
This converter cleared up my emissions code and the car feels more powerful. It's a solid replacement for the OEM part and much cheaper.
2026-01-15
Nancy_FirstCar_320
Great quality part, especially considering the price. It feels sturdy and looks well-made. My LaCrosse is running great now.
2025-10-10
Fast Free Shipping
45-Day Free Returns
3-Year Warranty
24/7 Customer Service
Check if this fits your vehicle
| Year | Make | Model | Trim | Engine |
|---|---|---|---|---|
| 2005 - 2009 | Buick | LaCrosse | CX | 3.8L V6 |
| 2005 - 2009 | Buick | LaCrosse | CXL | 3.8L V6 |
| 2005 - 2008 | Pontiac | Grand Prix | Base | 3.8L V6 |
| 2005 - 2007 | Pontiac | Grand Prix | GT | 3.8L V6 |
| 2004 | Pontiac | Grand Prix | GT1 | 3.8L V6 |







4.7/5
Based on 7 reviews
Emma_DailyCommute_440
This converter cleared up my emissions code and the car feels more powerful. It's a solid replacement for the OEM part and much cheaper.
2026-01-15
Nancy_FirstCar_320
Great quality part, especially considering the price. It feels sturdy and looks well-made. My LaCrosse is running great now.
2025-10-10
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.
Loading vehicle options...
Choose Year, Make, and Model to check exact fitment.
Check if this fits your vehicle
Select a vehicle to check this product.
Check if this fits your vehicle
Fitment has not been checked for a vehicle.
Emma_DailyCommute_440
This converter cleared up my emissions code and the car feels more powerful. It's a solid replacement for the OEM part and much cheaper.
2026-01-15
Nancy_FirstCar_320
Great quality part, especially considering the price. It feels sturdy and looks well-made. My LaCrosse is running great now.
2025-10-10
Fast Free Shipping
45-Day Free Returns
3-Year Warranty
24/7 Customer Service
Check if this fits your vehicle
| Year | Make | Model | Trim | Engine |
|---|---|---|---|---|
| 2005 - 2009 | Buick | LaCrosse | CX | 3.8L V6 |
| 2005 - 2009 | Buick | LaCrosse | CXL | 3.8L V6 |
| 2005 - 2008 | Pontiac | Grand Prix | Base | 3.8L V6 |
| 2005 - 2007 | Pontiac | Grand Prix | GT | 3.8L V6 |
| 2004 | Pontiac | Grand Prix | GT1 | 3.8L V6 |







4.7/5
Based on 7 reviews
Emma_DailyCommute_440
This converter cleared up my emissions code and the car feels more powerful. It's a solid replacement for the OEM part and much cheaper.
2026-01-15
Nancy_FirstCar_320
Great quality part, especially considering the price. It feels sturdy and looks well-made. My LaCrosse is running great now.
2025-10-10
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.