/live/media/MG/MG_51872_Fro.jpg)
Will it fit your vehicle?
Confirm before you buy. Free return shipping if it doesn't fit.
MagnaFlow 51872 Catalytic Converter - Left
| Brand | MagnaFlow 51872 |
|---|---|
| Position | Left |
| Mounting Hardware Included | Yes |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Tube Material | Stainless steel |
| Inlet Type | Bolt-on |
| Outlet Type | Bolt-on |
| Heat Shield Attached | No |
| Body Material | Stainless steel |
| Substrate Material | Ceramic |
| Outlet Gasket Included | No |
| Overall Length | 20.125 |
| Air Tube Count | 0 |
| Sensor Port Count | 1 |
| Air Tube Adaptable | No |
| Clamp Included | No |
| Converter Quantity | 1 |
| Finish | Stainless steel |
| Gasket Included | Yes |
| Hangers Included | Yes |
| Heat Shield Material | None |
| Main Piping Diameter | 2 |
| Oxygen Sensor Location | Post converter |
| Series | Oem grade |
| Subtitle | Federal / epa compliant |
| Title | Oem grade direct-fit |
| Type | Direct-fit |
| Product line | Direct-Fit OEM GRADE Federal (Exc.CA) |
| Fits | Cadillac · 2 vehicles |
Direct-fit design. Bolt-on replacement for straightforward exhaust service.
Stainless steel construction. Corrosion-resistant materials help withstand exhaust heat and moisture.
OE-style engineering. 3D-scanned development helps match original equipment fit and function.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct-Fit Catalytic Converter
MagnaFlow catalytic converter 51872 is a direct-fit replacement for the 2003-2004 Cadillac CTS, left side. It is built for Federal/EPA-compliant applications and uses a bolt-on design for straightforward installation with the proper tools.
This MagnaFlow 51872 converter uses stainless steel construction, a ceramic substrate, and a spun-body design that mirrors the original equipment layout. The single laser fusion weld helps reduce leak potential, while the compact low-mass design supports efficient thermal performance. MagnaFlow’s 3D scanning-based development process helps the part match OE fit and function.
Key Features
- Direct-fit catalytic converter for specific Cadillac CTS applications
- Stainless steel tube and body construction
- Ceramic substrate for emissions control
- Bolt-on inlet and outlet for installation without cutting or welding
- Single post-converter oxygen sensor port
- Federal/EPA-compliant design for OBDII federally registered vehicles
- Gasket and hangers included
What This Part Helps Address
- Check engine light concerns related to catalytic converter efficiency
- Emissions system faults on Federal/EPA-equipped vehicles
- Leaks caused by worn or corroded factory exhaust connections
- Fitment issues from damaged or aging original converter assemblies
- Reduced thermal efficiency from a deteriorated converter body
Installation Notes
Fits 2003-2004 Cadillac CTS, left. Use the correct tools and follow the vehicle service procedure for a direct-fit exhaust installation. No cutting or welding is required. The included gasket and hangers help simplify replacement and reduce the need to reuse corroded factory parts.
Quality Assurance
MagnaFlow uses 3D scanning during research and development to verify fit and function against original equipment. Part number 51872 is engineered to meet or exceed Federal emissions requirements for applicable OBDII vehicles. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Cadillac | CTS | 3.2L | V6 | Left | Direct-Fit OEM GRADE Federal (Exc.CA) |
| 2003 | Cadillac | CTS | 3.2L | V6 | Left | Direct-Fit OEM GRADE Federal (Exc.CA) |
| No rows match your filter. | ||||||