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AP Exhaust 641338 Catalytic Converter with Integrated Exhaust Manifold - Front
AP Exhaust Catalytic Converter with Integrated Exhaust Manifold Overview
The AP Exhaust catalytic converter with integrated exhaust manifold (part number 641338) is designed for direct-fit replacement on select Chevrolet, GMC, Hummer, and Isuzu models. Engineered with stainless steel construction and a ceramic substrate, this federal/EPA compliant converter ensures reliable emissions control and durability.
- Constructed from corrosion-resistant stainless steel body
- Includes inlet and outlet gaskets for proper sealing
- Features a 9 bolt welded flange inlet and 3 bolt welded flange outlet with gasket stub
- Equipped with two O2 sensor ports for accurate emissions monitoring
- Overall length of 27.13 inches for precise fitment
- Ceramic substrate designed for efficient catalytic conversion
- Federal/EPA direct-fit manifold type for compliance and ease of installation
Detailed Product Description
This AP Exhaust catalytic converter with integrated exhaust manifold (part number 641338) is specifically engineered to meet federal and EPA emissions standards. The stainless steel body provides enhanced resistance to rust and corrosion, extending the service life of the component. The ceramic substrate inside the converter facilitates effective reduction of harmful exhaust gases. The unit includes inlet and outlet gaskets to ensure a secure and leak-free connection. The inlet features a 9 bolt welded flange, while the outlet uses a 3 bolt welded flange with a gasket stub, both designed for a direct-fit installation on compatible vehicles.
With two O2 sensor ports, this catalytic converter supports accurate oxygen sensor readings, which are critical for engine management and emissions control. The overall length of 27.13 inches is tailored to fit specific models without modification.
Compatible Vehicles and Applications
- Chevrolet Canyon
- GMC Colorado
- Hummer H3
- Isuzu i-370
This part is ideal for replacing a faulty or damaged catalytic converter with integrated exhaust manifold on these vehicles, helping to restore proper emissions function and maintain compliance with environmental regulations.
Common Issues Addressed by This Part
- Failed or clogged catalytic converter causing poor emissions performance
- Exhaust leaks at the manifold or converter flange
- Check engine light triggered by faulty O2 sensor readings
- Reduced engine efficiency due to damaged exhaust components
- Non-compliance with federal or EPA emissions standards
Installation Notes and Tips
This catalytic converter is designed as a direct-fit replacement, matching OEM specifications for the Chevrolet Canyon, GMC Colorado, Hummer H3, and Isuzu i-370. It includes inlet and outlet gaskets but does not come with installation hardware. Ensure all mating surfaces are clean and free of debris before installation. Proper torque on the 9 bolt inlet flange and 3 bolt outlet flange is essential to prevent exhaust leaks. Verify O2 sensor port alignment and sensor installation to maintain accurate emissions monitoring.
Quality Assurance and Warranty
AP Exhaust products are manufactured to meet federal and EPA standards for emissions control. The stainless steel construction and ceramic substrate provide durability and long service life. While specific warranty details are not provided here, AP Exhaust typically offers coverage against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.
| Brand | AP Exhaust |
| Part Number | 641338 |
| Body Material | Stainless steel |
| Inlet Gasket | Yes |
| Inlet Hardware | None |
| Inlet Type A | 9 bolt welded flange |
| O2 Sensor Ports | 2 |
| Outlet Gasket | Yes |
| Outlet Hardware | None |
| Outlet Type A | 3 bolt welded flange w/ gasket stub |
| Overall Length (IN) | 27.13 |
| Substrate Material | Ceramic |
| Type | Federal / epa direct-fit manifold |
This part fits 32 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Chevrolet | Colorado | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2012 | Chevrolet | Colorado | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2012 | GMC | Canyon | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2012 | GMC | Canyon | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2011 | Chevrolet | Colorado | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2011 | Chevrolet | Colorado | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2011 | GMC | Canyon | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2011 | GMC | Canyon | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2010 | Chevrolet | Colorado | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2010 | Chevrolet | Colorado | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2010 | GMC | Canyon | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2010 | GMC | Canyon | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2009 | Chevrolet | Colorado | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2009 | Chevrolet | Colorado | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2009 | GMC | Canyon | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2009 | GMC | Canyon | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | Chevrolet | Colorado | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | Chevrolet | Colorado | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | GMC | Canyon | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | GMC | Canyon | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | Hummer | H3 | 3.7L | L5 | N/A | Direct Fit; (07-08, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | Hummer | H3 | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | Isuzu | i-370 | 3.7L | L5 | N/A | Direct Fit; (3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2008 | Isuzu | i-370 | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | Chevrolet | Colorado | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | Chevrolet | Colorado | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | GMC | Canyon | 3.7L | L5 | N/A | Direct Fit; (07-12, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | GMC | Canyon | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | Hummer | H3 | 3.7L | L5 | N/A | Direct Fit; (07-08, 3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | Hummer | H3 | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | Isuzu | i-370 | 3.7L | L5 | N/A | Direct Fit; (3.7L Eng.); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2007 | Isuzu | i-370 | 3.7L | L5 | Front | Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.