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If you drive a Lincoln MKZ, choosing the right catalytic converter affects emissions compliance, engine performance, and long-term reliability. A properly fitted converter helps the engine run cleaner, reduces the chance of a check-engine light tied to catalytic issues, and can prevent poor drivability caused by restricted flow. This guide covers the shortlisted top picks for Lincoln MKZ catalytic converters and explains the criteria we used to evaluate them, including fitment accuracy and emission control effectiveness. Read on to understand what to look for before you replace the part.
Looking for other parts? See all Lincoln MKZ parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | PHILTOP Front Catalytic Converter Kit for Lincoln MKZ (front left) |  |
| Most Popular A crowd favorite that many people choose with confidence | HIGHBRICK Catalytic Converter for Lincoln MKZ 2013–2016 L4 2.0L (EPA Compliant) |  |
| Best Quality Built to a higher standard if you want something more solid | Cat Clean Catalytic Converter for Lincoln MKZ (2013–2016) 3.7L V6, EPA Compliant |  |
| Best Budget The cheapest option that still gets the job done reliably | PTPDRH Catalytic Converter Compatible with Lincoln MKZ 3.5L / MKX / MKS (EPA Compliant) |  |
| Most Sold A high-volume bestseller chosen again and again | A-Premium Catalytic Converter with Gasket Kit (EPA Compliant) |  |
| Best Value for Money The sweet spot between price and what you get | MagnaFlow 51356 OEM-Grade Universal Catalytic Converter (2.5" In/Out) |  |
| Best Overall The best all-around choice for most situations | KAX Catalytic Converter for 2013–2016 Lincoln MKZ (3.7L), left or right |  |
1. PHILTOP Front Catalytic Converter Kit for Lincoln MKZ (front left)
| Brand | PHILTOP |
|---|---|
| Fitment | Lincoln MKZ 2016–2018 (3.7L) listed among compatible MKZ years in product listing |
| Material | 409L stainless steel |
| Position | Front Left |
| Certification | EPA compliant (not for certain states) |
This PHILTOP front catalytic converter kit is a direct-replacement style unit intended to restore emissions control and drivability on compatible Lincoln MKZ models. It installs where the front left converter sits and includes the inlet flange and threaded oxygen-sensor port for straightforward hookup to the existing exhaust and sensor harness. Built from 409L stainless steel with machined exterior surfaces and factory-style mounting points, it is designed to match factory routing and fit without major modification. In practice the unit reduces exhaust drone from a clogged or failed converter and returns catalytic function for emissions checks in federally regulated states. Limitations include state restrictions that prohibit installation in California, Colorado, Maine, and New York and the fact that long-term durability and weld quality for aftermarket converters can vary compared with higher-end brands. Expect a mostly straightforward bolt-on swap when the vehicle and model year match, but confirm exact fitment before ordering.
Best for: A reliability-focused buyer who prioritizes restoring proper emissions function and a factory-like fit on a Lincoln MKZ and values straightforward, maintenance-minded repairs.
Less Ideal for: Drivers in states with stricter emissions laws or owners seeking an ultra-premium, lifelong factory-quality replacement should consider higher-end alternatives or dealer-sourced parts.
- Direct-fit design trimmed to factory mounting points for straightforward installation on matching vehicles.
- 409L stainless steel construction that resists corrosion and aims to extend service life.
- Integrated oxygen-sensor port and machined flange simplify reconnection to the vehicle wiring and exhaust.
- EPA-compliant for federal states so it restores legal emissions performance where allowed.
- Not legal for sale or installation in California, Colorado, Maine, and New York.
- Aftermarket build quality may not match premium OEM-replacement brands for long-term durability.
Verdict A budget-friendly, direct-fit front catalytic converter for Lincoln MKZ owners who need a reliable emissions replacement in federally regulated states.
2. HIGHBRICK Catalytic Converter for Lincoln MKZ 2013–2016 L4 2.0L (EPA Compliant)
| Vehicle compatibility | Lincoln MKZ 2013–2016 L4 2.0L |
|---|---|
| Compliance | Federal EPA certified |
| Construction | Stainless steel body with ceramic catalyst |
| Fit type | Direct bolt-on replacement |
This HIGHBRICK catalytic converter is built as a direct bolt-on replacement for the Lincoln MKZ 2013–2016 with the 2.0L four-cylinder engine, intended to restore emission control and clear P0420-style faults. It uses a three-way catalyst core to reduce hydrocarbons, CO, and NOx and is constructed from stainless steel with ceramic substrate materials to resist thermal stress. The listing emphasizes a direct fit with supplied mounting points and hardware so installation is possible without cutting or welding when matched to the specified vehicle application. It is EPA compliant for federal use but is not legal for sale in certain states with stricter rules. Practical benefits include factory-aligned fit, materials meant to resist cracking, and straightforward replacement that can get an MKZ back to emissions compliance quickly. Limitations are legal restrictions for some states and the usual uncertainty about long-term life compared with higher-end factory-quality converters, so buyers should verify local regulations before proceeding.
Best for: Convenience-driven buyers who prioritize a ready-to-install, vehicle-specific replacement that restores emissions compliance with minimal modification and downtime.
Less Ideal for: Buyers in states with their own stricter emissions requirements or those who need a converter with documented extended service life and manufacturer-backed longevity assurances.
- Direct bolt-on design with matching mounting points and included hardware for easier installation on the specified Lincoln MKZ.
- Constructed from stainless steel and ceramic catalyst materials intended to resist thermal stress and cracking.
- EPA certified for federal emissions requirements so it restores emission control on approved vehicles.
- Three-way catalytic process aimed at reducing hydrocarbons, carbon monoxide, and nitrogen oxides.
- Not legal for sale or use in certain states with stricter emissions rules.
- Long-term durability compared with factory-quality converters is not guaranteed by explicit lifetime data.
Verdict A convenient, direct-fit EPA-compliant catalytic converter for Lincoln MKZ 2013–2016 that simplifies replacement but may be restricted in certain states.
3. Cat Clean Catalytic Converter for Lincoln MKZ (2013–2016) 3.7L V6, EPA Compliant
| Vehicle fitment | Lincoln MKZ 2013–2016 3.7L V6 |
|---|---|
| Compliance | EPA Compliant (not for sale/use in restricted states) |
| Shell material | 409L stainless steel |
| Catalyst composition | Pt, Rh, Pd loaded honeycomb ceramic |
This Cat Clean catalytic converter replaces the factory unit on Lincoln MKZ 2013–2016 models with the 3.7L V6 and is designed as a direct bolt-on with an O2 sensor port for a straightforward swap. It uses a high-density honeycomb ceramic substrate loaded with precious metals (Pt, Rh, Pd) to improve catalytic reactions and reduce emissions, and the 409L stainless steel shell and high-temp internal pad aim to protect the carrier for long service life. Typical use is as a factory-style replacement to clear low-efficiency codes such as P0420/P0430, restore emissions performance, and quiet exhaust harshness. Practical benefits include EPA compliance for federal emissions, direct-install design that minimizes fabrication, and materials intended to resist corrosion under normal driving. Limitations: it cannot be sold or used in several restricted states and compliance does not guarantee resolution of every check-engine issue if upstream sensors or engine problems persist. Installation should be done to factory fitment procedures to ensure proper sealing and sensor function.
Best for: Performance-oriented buyers seeking a factory-replacement catalytic converter that restores emissions efficiency and exhaust flow on Lincoln MKZ 2013–2016 3.7L V6 models while prioritizing materials and catalytic effectiveness.
Less Ideal for: Owners in states with restricted emissions rules or buyers who need a universal or custom high-flow race-only converter should look at other options.
- Direct bolt-on design with O2 sensor port for straightforward installation on compatible MKZ vehicles
- EPA-compliant catalytic substrate using Pt, Rh and Pd for improved emissions conversion
- 409L stainless steel body and internal high-temperature pad for enhanced durability and corrosion resistance
- Not legal for sale or use in certain states with stricter emissions rules
- Does not guarantee fault-code clearance if the underlying engine or sensor issues remain
Verdict For Lincoln MKZ 3.7L V6 owners wanting a direct-fit, EPA-compliant replacement that balances emissions performance and durable construction, this Cat Clean unit is a strong factory-style option.
4. PTPDRH Catalytic Converter Compatible with Lincoln MKZ 3.5L / MKX / MKS (EPA Compliant)
| Brand | PTPDRH |
|---|---|
| Model | PTPDRH97726 |
| Exterior | Polished |
| ASIN | B0FXBPWRJ6 |
This PTPDRH catalytic converter is a direct-fit replacement intended for Lincoln MKZ/MKX/MKS and similarly equipped 3.5L or 3.7L V6 models listed by the manufacturer. It is EPA certified for federal emissions compliance and built with stainless steel and ceramic internals to resist thermal shock and maintain long-term function. Installation is described as a drop-in swap that uses existing interfaces and fasteners so no engine recalibration or programming is required. For budget-focused buyers this unit provides an affordable way to clear emission-related fault codes and restore exhaust flow and performance without buying an OEM part. Important limitations are state restrictions it is not approved for sale in California, Washington, Vermont, or Oregon and buyers should verify local rules before purchasing. Also this aftermarket unit may differ from factory parts in finish and catalytic cell count, which can affect longevity compared with higher-end factory-quality replacements. Overall it is a pragmatic cost-conscious replacement when federal compliance and simple installation are priorities.
Best for: Budget-conscious buyers who prioritize restoring emissions compliance and basic engine drivability with a simple, no-programming replacement for Lincoln 3.5L/3.7L V6 models.
Less Ideal for: Owners seeking a factory-identical or highest-durability OEM-level catalytic converter, or those subject to strict state-level emissions regulations should consider other options.
- EPA certified for U.S. federal emissions compliance
- Direct-fit design for straightforward drop-in installation with existing mounting points
- Stainless steel and ceramic construction resists thermal shock and cracking
- Affordable alternative to factory-quality replacements for clearing emission faults
- Not approved for sale in certain states including California, Washington, Vermont, and Oregon
- May differ from factory parts in internal cell design which can affect long-term durability compared with higher-end factory-quality units
Verdict A budget-friendly, EPA-certified drop-in replacement for Lincoln 3.5L/3.7L V6 models that restores emissions function and drivability but is not approved for several strict-emission states.
5. A-Premium Catalytic Converter with Gasket Kit (EPA Compliant)
| Vehicle Fitment | Lincoln MKX 2011-2015 V6 3.7L (listed) |
|---|
This A-Premium catalytic converter kit is a direct-fit replacement intended for front and rear positions on compatible Lincoln and Ford 3.5L and 3.7L V6 models and arrives with mounting hardware and gaskets. It is typically used to replace a failed or clogged factory catalytic converter to restore exhaust flow and clear emissions fault codes. The unit is described as stainless steel with welded bolt-flange inlets and outlets, and the kit is EPA compliant for federal emissions, which makes it suitable for non-restricted states and many repair situations. Practical benefits include included hardware for a straightforward bolt-on swap and a one-year unlimited-mileage guarantee for added reassurance. Important limitations are that EPA-compliant converters like this cannot be sold or installed in certain states with stricter regulations, and buyers should verify exact fitment for the Lincoln MKZ model year before purchase. Installation may require basic shop tools and some exhaust disassembly depending on rust and vehicle condition.
Best for: Risk-averse mainstream buyers who prioritize a straightforward factory-quality replacement and want the reassurance of included hardware and a warranty when repairing their Lincoln MKZ.
Less Ideal for: Drivers in states with strict aftermarket catalytic converter regulations or owners seeking a California-compliant emissions part should look for a state-specific converter solution.
- Direct-fit design with gaskets and mounting hardware included to simplify replacement
- Stainless steel construction and welded flanges for corrosion resistance and durable joints
- EPA-compliant for federal emissions, suitable where federal converters are allowed
- One-year unlimited-mileage guarantee provides added purchaser reassurance
- Not legal for sale or installation in certain states with stricter aftermarket converter rules
- Compatibility must be confirmed to specific Lincoln MKZ year and emissions label before ordering
Verdict A practical, warranty-backed direct-fit catalytic converter kit for risk-averse buyers needing a factory-style replacement, but confirm state emissions rules and exact MKZ fitment before buying.
6. MagnaFlow 51356 OEM-Grade Universal Catalytic Converter (2.5" In/Out)
| Inlet Diameter | 2.5" |
|---|---|
| Outlet Diameter | 2.5" |
| Oxygen Sensor Location | Midbed |
| Body Type | Clam Shell |
| Heat Shield | Included |
The MagnaFlow 51356 is a universal, weld-on catalytic converter built to meet Federal/EPA emissions standards and act as a cost-effective replacement for a failed factory converter. It uses a formulated catalyst blend intended to control emissions and a stainless steel body and MIG welds for corrosion resistance in undercarriage installations. Typical use is cutting out the old unit and welding this in place; the 2.5 inch inlet and outlet and midbed oxygen-sensor provision let a shop adapt it to many exhaust layouts. The unit includes a stamped heat shield and is compact enough for confined mounting positions. In practice it restores emissions function and often clears P0420-type faults when fitted and welded correctly, but universal fitment means some trimming, pipe inserts, or adapter pieces are commonly required and incorrect installation can leave the check engine light on until sensors and fitment are addressed. A few users report long-term durability issues on certain builds, so have a trusted exhaust shop perform installation and initial inspection.
Best for: Practical optimizers who want a durable, emissions-compliant replacement that keeps repair costs down while relying on a professional shop to adapt and install it correctly.
Less Ideal for: Drivers seeking a direct-fit, bolt-in factory-quality replacement without any welding or modification should consider vehicle-specific factory replacement parts instead.
- Meets Federal/EPA emissions requirements for OBDII vehicles
- Stainless steel construction and 308 MIG welds for corrosion resistance
- Universal weld-on design with midbed oxygen sensor location simplifies sensor placement
- Includes an aluminized steel heat shield for added protection
- Compact form factor suits tight underbody spaces
- Universal design requires cutting, welding, and sometimes pipe adapters for a proper fit
- Not vehicle-specific so fitment and length may need modification for exact factory routing
- Some isolated reports of early core failure or rattling in certain applications
Verdict A budget-friendly, EPA-compliant universal converter that restores emissions control if you're willing to have a shop adapt and weld it to your Lincoln MKZ.
7. KAX Catalytic Converter for 2013–2016 Lincoln MKZ (3.7L), left or right
| Compatible vehicles | Lincoln MKZ 2013–2016 3.7L |
|---|---|
| Position | Left, Right |
| Regulatory compliance | EPA and OBD2 (not CARB) |
| OEM part numbers referenced | 19516, 19517, FB5Z5G232A |
This KAX catalytic converter is a direct replacement option for the 3.7L Lincoln MKZ (2013–2016), offered as left or right units and built with a rust-resistant stainless steel body that fully encloses a ceramic carrier. It installs in place of the factory unit to restore emissions function, reduce exhaust noise, and address codes related to catalytic efficiency. The converter uses a CeO2-stabilized ceramic substrate intended to improve heat resistance and catalytic longevity while maintaining flow and surface area for effective conversion. It is produced by an ISO-certified manufacturer and meets EPA and OBD2 standards for states outside California and New York. Practical benefits include a factory-quality fitment approach, corrosion resistance for longer service life, and compatibility with the MKZ's original part numbers listed by the manufacturer. Important limitations are that it is not CARB-compliant so it cannot be used for California emission standards, some buyers report hardware fitment or bolt mismatch issues, and a small number of installs have triggered a check engine lamp which may require tuning or sensor attention after installation.
Best for: A balanced all-round buyer who wants a durable, factory-style replacement to restore emissions function and reduce exhaust noise on a 2013–2016 Lincoln MKZ 3.7L without needing California-level compliance.
Less Ideal for: Drivers in California or owners who require CARB-compliant parts should look elsewhere, and buyers wanting a guaranteed bolt-on install with no fitment adjustments may prefer dealer-sourced replacements.
- Built from rust-resistant stainless steel for better durability than untreated units
- Factory-replacement fit for left or right positions matched to listed MKZ part numbers
- CeO2-stabilized ceramic substrate improves heat resistance and catalytic activity
- Manufactured by an ISO-certified supplier and designed to meet EPA and OBD2 requirements
- Helps restore emissions control and reduce exhaust noise when replacing a failed converter
- Not CARB-compliant so it is not legal for use in California or other CARB-required vehicles
- Some customers reported bolt or hardware fitment problems during installation
- A few installs have been reported to trigger a check engine light that may need further diagnosis
Verdict A solid EPA-compliant factory-style replacement for the MKZ 3.7L that balances durability and performance but is not suitable for CARB-required applications.
Choosing the Right Lincoln MKZ Catalytic Converter: Key Factors to Consider
Fitment and Mounting
Correct physical fit is the foundation of a successful catalytic converter replacement. If the flange pattern, pipe diameter, and overall geometry do not match the Lincoln MKZ exhaust layout, installation will require cutting, welding, or adapters that add labor and potential leak points.
A direct-fit unit simplifies installation, preserves exhaust alignment, and reduces the chance of exhaust leaks or sensor misplacement. Confirming bolt pattern and hanger locations helps ensure proper mounting and prevents stress on adjacent exhaust components, which can cause premature failure.
Emissions Performance and Certification
Emission control effectiveness is the primary role of the catalytic converter, so documentation of emissions performance or compliance matters. Look for converters that state conformity with relevant regulatory standards or include testing data indicating reductions in hydrocarbons, carbon monoxide, and NOx.
Products with clear certification are more likely to restore lawful exhaust levels and avoid emissions-related issues during inspections. Verified performance also reduces the risk that a replaced unit will leave the vehicle with lingering sensor faults or failed emissions tests.
Internal Substrate and Cell Density
The substrate type and cell density determine how the catalytic media interacts with exhaust gases. A substrate with appropriate cell density balances conversion efficiency and exhaust flow; too dense can restrict flow and harm performance while too coarse may not fully convert pollutants.
Consider the carrier material and washcoat thickness because these influence conversion efficiency and resistance to thermal degradation. A durable substrate that tolerates thermal cycling will last longer and maintain emissions performance over time.
Durability and Corrosion Resistance
Catalytic converters operate under harsh conditions of heat, vibration, and corrosive exhaust byproducts. Materials used for the shell, welds, and internal mounting should resist corrosion and cracking to extend service life.
Stainless steel outer shells and high-quality welds reduce the chance of rust-through, while robust internal supports help prevent substrate breakage from vibration. Durability affects not only longevity but also long-term emissions control and the likelihood of repeat replacements.
Oxygen Sensor Compatibility
Modern engines use upstream and downstream oxygen sensors to monitor converter efficiency. A replacement unit should provide correct sensor bungs or ports in the same locations as the original to ensure sensors read accurately.
Improper sensor placement can trigger diagnostic trouble codes or inhibit the engine control system from adjusting fuel trim correctly. Ensuring compatibility with the MKZ's sensor layout reduces the chance of check-engine light issues after installation.
Warranty and Support
Warranty terms indicate the manufacturer's confidence and provide protection against premature failures. Look for clear coverage details that specify duration and what is included, such as defects in materials or workmanship.
Consider the availability of technical support and documentation for fitment or installation questions. Strong warranty and support reduce your risk and make it easier to address issues if the converter does not perform as expected after installation.
FAQ
How do I know if the catalytic converter on my Lincoln MKZ is failing?
Common signs often include a persistent check-engine light, reduced engine performance, or unusual exhaust smell. You may also notice poor fuel economy or a rattling noise if internal substrate pieces have broken loose. Diagnosis usually involves scanning for trouble codes and a visual inspection for damage or leaks.
Will replacing the catalytic converter clear a check-engine light on a Lincoln MKZ?
Replacing a faulty converter can resolve codes related to converter efficiency, but the light will clear only after the engine control system confirms normal readings through sensor data. In some cases additional steps such as clearing stored codes or driving through the vehicle's readiness cycle are needed before the light stays off.
Can I install a catalytic converter on my Lincoln MKZ myself?
DIY installation is possible if you have appropriate tools and experience with exhaust systems, but it depends on whether the unit is a direct-fit. Direct-fit converters reduce complexity by matching factory mounting points. If welding, cutting, or sensor relocation is required, professional installation is usually safer and helps avoid leaks or fitment issues.
Does a replacement catalytic converter affect exhaust emissions on the Lincoln MKZ?
Yes, a properly selected and installed converter restores the vehicle's ability to convert harmful gases, which improves exhaust emissions. Performance depends on correct fitment, substrate condition, and oxygen sensor function. Units with documented compliance are more likely to meet emissions expectations.
How long should a catalytic converter last on a Lincoln MKZ?
Lifespan varies based on driving conditions, maintenance, and exposure to contaminants, but converters are generally designed to last many years under normal use. Factors like frequent short trips, engine misfires, or coolant and oil contamination can shorten service life and lead to earlier failure signs.
How We Chose the Best Lincoln MKZ Catalytic Converter
We screened a broad set of aftermarket and direct-fit catalytic converters compatible with the Lincoln MKZ, focusing on factors that matter most for emissions control and vehicle performance. Primary evaluation criteria included physical fitment to the MKZ exhaust routing and flange pattern, verified emissions reduction performance or compliance data, and the internal substrate design that affects flow and durability. We also weighed build materials and corrosion resistance for long-term reliability, as well as warranty coverage to reflect manufacturer confidence. Excluded from consideration were universal or modified-fit converters that require significant fabrication, parts without compatibility documentation, and items lacking any emissions compliance information. Our final list emphasizes converters that minimize installation changes, maintain proper backpressure and flow, and offer documented performance for exhaust emissions.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting a catalytic converter for a Lincoln MKZ, prioritize units that match the vehicle's fitment and sensor layout while offering verified emissions performance. Balance substrate design and flow characteristics to avoid harming drivability while restoring exhaust control. Also consider build quality, corrosion resistance, and warranty when weighing options. These factors together reduce the risk of repeat repairs and help ensure the converter maintains proper emissions and engine behavior over time.
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