Dorman 678-511 Catalytic Converter
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$752.56
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
This catalytic converter is precision-engineered to match the original equipment fit and function on specific vehicle years, makes and models for a reliable replacement.
- Direct replacement - this catalytic converter is designed to match the fit and performance of the original equipment on specific vehicles
- Durable construction - manufactured within strict tolerances for reliable longevity
- Cost-effective solution - offers original equipment functionality at a competitive price
- Trustworthy value - backed by team of engineers and quality control experts in the United States
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2004 | Infiniti | I35 | V6 3.5L (3498cc) | Front | CARB Compliant: Yes; Engine Family Number (EFN) 4NSXV03.5N7A |
| 2003 | Infiniti | I35 | V6 3.5L (3498cc) | Front | CARB Compliant: Yes; Engine Family Number (EFN) 3NSXV03.5C7A |
| 2003 | Nissan | Maxima | V6 3.5L (3498cc) | Front | CARB Compliant: Yes; Engine Family Number (EFN) 3NSXV03.5C7A |
| 2002 | Infiniti | I35 | V6 3.5L (3498cc) | Front | CARB Compliant: Yes; Engine Family Number (EFN) 2NSXV03.5C6A |
| 2002 | Nissan | Maxima | V6 3.5L (3498cc) | Front | CARB Compliant: Yes; Engine Family Number (EFN) 2NSXV03.5C6A |
Product Specifications
| Air Tube Count: | 0 |
|---|---|
| Body Height: | 5.9 in |
| Body Length: | 4.8 in |
| Body Material: | Stainless Steel |
| Body Shape: | Cylinder |
| Body Width: | 3.9 in |
| California Air Resources Board (CARB) Certified: | Yes |
| California Air Resources Board Approved: | Yes |
| CARB Compliant: | Yes |
| Color: | Metallic Gray |
| Exhaust Manifold Inlet Port Shape: | Round |
| Gasket Or Seal Included: | Yes |
| Grade Type: | Standard Replacement |
| Heat Shield Attached: | No |
| Inlet Gasket Included: | No |
| Inlet Inside Diameter: | 3.78 in |
| Inlet Mounting Hardware Included: | No |
| Inlet Mounting Hole Quantity: | 6 |
| Inlet Quantity: | 1 |
| Inlet Type: | Flanged |
| Installation Hardware Included: | Yes |
| Item Grade: | Standard Replacement |
| Material: | Stainless Steel |
| Mounting Hardware Included: | Yes |
| New York Certified: | Yes |
| Outlet Gasket Included: | Yes |
| Outlet Inside Diameter: | 2.02 in |
| Outlet Mounting Hardware Included: | Yes |
| Outlet Mounting Hole Quantity: | 3 |
| Outlet Outside Diameter: | 4.5 in |
| Outlet Quantity: | 1 |
| Outlet Type: | Flanged |
| Overall Length: | 10.7 in |
| Package Contents: | 1 Converter Assembly; 1 Outlet Gasket; 2 Studs; 9 Bolts; 9 Washers |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Sensor Port Count: | 1 |
| Substrate Material: | Ceramic |
| Universal Or Specific Fit: | Specific |
| CARB Executive Order Number: | D-798-9 |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| B08A15Y700 | NISSAN |