AP Exhaust 641244 Catalytic Converter with Integrated Exhaust Manifold - Front Left or Left
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AP Exhaust

AP Exhaust 641244 Catalytic Converter with Integrated Exhaust Manifold - Front Left or Left

Brand AP Exhaust 641244
Position Left and Front Left
Air Tube Qty 1
Body Material Stainless steel
Inlet Gasket None
Inlet Hardware None
Inlet Type A 6 bolt welded flange
O2 Sensor Ports 1
Outlet Gasket Yes
Outlet Hardware Yes
Outlet Type A 3 bolt welded flange
Overall Length (IN) 20.5
Substrate Material Ceramic
Type Federal / epa direct-fit manifold
Fits Nissan · 13 vehicles

Direct-fit manifold. Built to exact OE dimensions for straightforward installation.

Stainless steel body. Helps resist corrosion for long-term durability.

Ceramic substrate. Engineered for efficient converter performance.

$650.27Free shipping
In stock · usually ships same day before 1pm CST
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Order total $650.27
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Catalytic Converter with Integrated Exhaust Manifold options

Direct-Fit Catalytic Converter Manifold

AP Exhaust 641244 is a Federal / EPA direct-fit catalytic converter with integrated exhaust manifold for select Nissan Frontier and Nissan Xterra applications. It is built to OE dimensions for accurate fitment and uses a ceramic substrate with stainless steel body construction for dependable exhaust flow and emissions control.

  • Federal / EPA direct-fit manifold design
  • Integrated exhaust manifold construction
  • Stainless steel body
  • Ceramic substrate material
  • 6-bolt welded inlet flange and 3-bolt welded outlet flange
  • 1 O2 sensor port
  • Outlet gasket and outlet hardware included
  • Overall length: 20.5 in.

Fitment and Application

Fits 2002 Nissan Frontier, left; 2002 Nissan Frontier, left Desert Runner; 2002 Nissan Xterra, N/A; 2002-2004 Nissan Frontier, left; 2002-2004 Nissan Xterra, left; 2003-2004 Nissan Frontier, left; 2003-2004 Nissan Xterra, front left. This AP Exhaust 641244 application covers naturally aspirated and listed Federal/California emissions configurations as noted in the fitment data.

For shoppers searching for a Nissan Frontier catalytic converter manifold or a Nissan Xterra direct-fit exhaust manifold converter, this part number 641244 matches the listed OE-style mounting points and flange layout for the specified vehicles.

What This Part Helps Address

  • Failed catalytic converter efficiency codes
  • Exhaust leaks at the manifold-to-pipe connection
  • Restricted exhaust flow from a worn substrate
  • Broken or warped manifold/converter assembly
  • Emissions test failure on covered applications

Installation Notes

Direct-fit design supports OE-style installation on the listed Nissan Frontier and Nissan Xterra vehicles. Some applications note reuse of the OE nut adapter in the manifold if needed, or use of adapter 4963. Verify engine configuration, position, and emissions labeling before installation. Follow all state and local emissions regulations; this part is not for sale or use on vehicles licensed in CA, CO, ME, or NY where noted in the fitment data.

Quality Assurance

AP Exhaust uses proprietary substrate chemistry and modern manufacturing processes to produce converters built to exact OE dimensions and fitment. The result is a direct-fit emissions component engineered for consistent installation and reliable performance on the specified Nissan applications.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeDrive TypeLitersCylindersWheel BasePositionNotes
2004NissanFrontierCrew Cab Pickup—3.3LV6131.1"LeftDirect Fit; (Naturally Aspirated, Reuse OE Nut Adapter in Manifold Or Use 4963); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Long Bed
2004NissanFrontier——3.3LV6—LeftDirect Fit; Reuse OE nut adapter in manifold if needed or use 4963, Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2004NissanXterra——3.3LV6—Front LeftDirect Fit; (Naturally Aspirated); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Reuse OE Nut Adapter in Manifold if Needed
2004NissanXterra——3.3LV6—LeftDirect Fit; Resuse OE Nut Adapter in Manifold if Needed, Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2003NissanFrontierCrew Cab Pickup—3.3LV6131.1"LeftDirect Fit; (Naturally Aspirated, Reuse OE Nut Adapter in Manifold Or Use 4963); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Long Bed
2003NissanFrontier——3.3LV6—LeftDirect Fit; Reuse OE nut adapter in manifold if needed or use 4963, Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2003NissanXterra——3.3LV6—Front LeftDirect Fit; (Naturally Aspirated); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Reuse OE Nut Adapter in Manifold if Needed
2003NissanXterra——3.3LV6—LeftDirect Fit; Resuse OE Nut Adapter in Manifold if Needed, Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2002NissanFrontier—4WD3.3LV6116.1"LeftDirect Fit; (Reuse OE Nut Adapter in Manifold Or Use 4963); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Reuse OE Nut Adapter in Manifold if Needed
2002NissanFrontier—RWD3.3LV6116.1"LeftDirect Fit; (Reuse OE Nut Adapter in Manifold Or Use 4963); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Reuse OE Nut Adapter in Manifold if Needed; Desert Runner
2002NissanFrontier——3.3LV6—LeftDirect Fit; Reuse OE nut adapter in manifold if needed or use 4963, Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2002NissanXterra——3.3LV6—N/ADirect Fit; (2002); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; Reuse OE Nut Adapter in Manifold if Needed
2002NissanXterra——3.3LV6—LeftDirect Fit; Resuse OE Nut Adapter in Manifold if Needed, Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.