HomeExhaust > Catalytic ConverterAP Exhaust 644219 Catalytic Converter - Rear
Part #: 644219

AP Exhaust 644219 Catalytic Converter - Rear

Direct Fit Converter, Rear
⚙️ 8 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$333.02Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit Converter, Rear
🚗Fitment: Ford and Lincoln, Fusion and MKZ
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of AP Exhaust Direct Fit Converter 644219

The AP Exhaust Direct Fit Converter 644219 is designed specifically for Ford Fusion and Lincoln MKZ models. This federal EPA direct-fit catalytic converter offers a reliable replacement option crafted from durable stainless steel and ceramic substrate materials.

  • Federal / EPA direct-fit catalytic converter
  • Constructed with stainless steel body for corrosion resistance
  • Ceramic substrate for effective emissions control
  • Single inlet and outlet with welded flange and pipe connections
  • Includes one clamp and inlet gasket for secure fit
  • Overall length of 62 inches for precise fitment
  • Compatible with Ford Fusion and Lincoln MKZ vehicles
  • Boxed packaging for protection during shipping

Product Line Details: Direct Fit Converter

The Direct Fit Converter line by AP Exhaust focuses on providing catalytic converters that match OEM specifications for a direct replacement. This ensures straightforward installation without the need for modifications. The 644219 model maintains factory-style connections, including a 2 bolt welded flange inlet and a 2.25 inch inner diameter pipe outlet, supporting a seamless fit on compatible Ford Fusion and Lincoln MKZ vehicles.

Detailed Product Description

This catalytic converter features a stainless steel body designed to resist rust and corrosion, extending the service life of the part. The ceramic substrate inside efficiently reduces harmful emissions to meet federal EPA standards. The converter includes one inlet and one outlet, with a welded flange inlet connection and a pipe outlet connection, facilitating a secure and proper fit. The overall length of 62 inches ensures compatibility with the exhaust system layout of the specified vehicles. While this part is not CARB certified, it meets federal emissions requirements.

Common Applications and Issues Addressed

  • Replacement for damaged or clogged catalytic converters on Ford Fusion and Lincoln MKZ
  • Restores proper exhaust flow and emissions control
  • Helps resolve check engine light issues related to catalytic converter failure
  • Improves vehicle emissions compliance with federal EPA standards
  • Addresses exhaust leaks caused by worn or broken converter components

Installation Notes and Tips

The AP Exhaust Direct Fit Converter 644219 is designed for direct replacement with factory-style connections. It includes one clamp and an inlet gasket to assist with installation. Note that no additional inlet or outlet hardware is provided. The welded flange inlet requires a 2 bolt connection, and the outlet pipe has a 2.25 inch inner diameter. Professional installation is recommended to ensure proper fit and function.

Quality Assurance

Manufactured with high-quality stainless steel and ceramic substrate materials, this catalytic converter is built to meet federal EPA standards. The product is boxed for protection during shipping. Warranty information is not specified for this part number 644219.

BrandAP Exhaust
Part Number644219
PositionDirect Fit Converter, Rear
Converter TypeFederal / epa direct-fit
Clamp Quantity1
Inlet Quantity1
Body MaterialStainless steel
Outlet Quantity1
California Air Resources Board (CARB) CertifiedNo
Substrate MaterialCeramic
Overall Length62.000
BoxedYes
Inlet A Connection TypeWelded flange
Inlet Gasket QuantityYes
Inlet HardwareNone
Inlet Type A2 bolt welded
O2 Sensor PortsNone
Outlet A Connection TypePipe
Outlet GasketNone
Outlet HardwareNone
Outlet Type A2.25 i.d.
Package MaterialCorrugated cardboard
Package TypeBox

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2020FordFusion2.0LL4RearFederal and California Emissions; Direct Fit Converter
2020LincolnMKZ2.0LL4RearFederal and California Emissions; Direct Fit Converter
2019FordFusion2.0LL4RearFederal and California Emissions; Direct Fit Converter
2019LincolnMKZ2.0LL4RearFederal and California Emissions; Direct Fit Converter
2018FordFusion2.0LL4RearFederal and California Emissions; Direct Fit Converter
2018LincolnMKZ2.0LL4RearFederal and California Emissions; Direct Fit Converter
2017FordFusion2.0LL4RearFederal and California Emissions; Direct Fit Converter
2017LincolnMKZ2.0LL4RearFederal and California Emissions; Direct Fit Converter

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.