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Vehicle Info NeededMAGNAFLOWPART NUMBER: 642-51131
2006-2009 Cadillac STS OEM Grade Federal / EPA Compliant Manifold Catalytic Converter
$68800
Ships on 09/14/2026
Lowest Price Guarantee- Direct Fit Catalytic Converter
- OEM Grade
- 49 State
Magnaflow 51131 Features:
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51131 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed specifically for the 2006-2009 Cadillac STS. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.
Part TypeCatalytic Converter
BrandMAGNAFLOW
Package Height6.0
Package Width11.75
Package Length42.13
Weight12.0 PG
Part CategoryPerformance Parts
Outlet SizeOEM
Cat Converter Air Tube AdapterNot Air Tube Kit Adaptable
Converter Body SizeOEM
Cat Converter ConfigurationDirect-Fit
Body SizeOEM
EmissionNon-California (49-State)
Overall Length29.25 in (743 mm)
Core Substrate MaterialOEM
MaterialStainless Steel
Catalytic Converter FormatPre-Catalytic Converter and Main Catalytic Converter
Inlet Size (In.)OE
Substrate MaterialOEM
Exhaust Pipe MaterialStainless Steel
Exhaust Component Mount TypeUses Factory Hangers
Recommended UseConverter
Carb CompliantNo
Part FitmentDirect Fit
Vendor Part Number51131
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
