AP Exhaust 641243 Catalytic Converter with Integrated Exhaust Manifold - Front Right or Right

Brand AP Exhaust 641243
Position Right and Front Right
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) 18.5
Substrate Material Ceramic
Type Federal / epa direct-fit manifold
Fits Nissan · 13 vehicles

Federal / EPA direct-fit. Built to exact OE dimensions for straightforward installation.

Stainless steel body. Helps resist corrosion in demanding exhaust conditions.

Ceramic substrate. Supports efficient converter performance and lower cost.

$654.76Free shipping
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AP Exhaust 641243 Catalytic Converter Manifold

AP Exhaust part number 641243 is a Federal / EPA direct-fit catalytic converter with integrated exhaust manifold for select Nissan Frontier and Nissan Xterra applications. It is built with a stainless steel body, ceramic substrate, and OE-style flange connections for a direct replacement on the listed vehicles.

Key Features

  • Federal / EPA direct-fit manifold design
  • Stainless steel body for corrosion resistance
  • Ceramic substrate material
  • 6-bolt welded inlet flange
  • 3-bolt welded outlet flange
  • 1 O2 sensor port
  • Outlet gasket and outlet hardware included
  • Overall length: 18.5 in.

Fitment Details

  • Fits 2002 Nissan Frontier, right; direct fit; 2002; Federal and California emissions; Desert Runner.
  • Fits 2002-2004 Nissan Frontier, right; direct fit manifold unit; Federal and California emissions.
  • Fits 2003-2004 Nissan Frontier, right; direct fit; naturally aspirated; Federal and California emissions; Long Bed.
  • Fits 2002 Nissan Xterra, N/A; direct fit; 2002; Federal and California emissions.
  • Fits 2002-2004 Nissan Xterra, right; direct fit manifold unit; Federal and California emissions.
  • Fits 2003-2004 Nissan Xterra, front right; direct fit; naturally aspirated; Federal and California emissions.

What This Part Helps Address

  • Failed catalytic converter efficiency codes
  • Exhaust leaks at the manifold or flange connection
  • Restricted exhaust flow from a damaged substrate
  • Check engine light concerns related to emissions performance
  • Cracked or corroded manifold-converter assemblies

Installation Notes

Verify the vehicle’s year, model, position, and emissions configuration before ordering. This AP Exhaust 641243 unit uses a 6-bolt welded inlet flange and 3-bolt welded outlet flange, with one O2 sensor port and an outlet gasket and outlet hardware noted in the product data. Because fitment varies by Frontier and Xterra configuration, match the listed application exactly, including naturally aspirated, long bed, Desert Runner, and manifold-unit notes where shown.

Quality Assurance

AP Emissions Technologies uses proprietary substrate chemistry and automated manufacturing processes to produce converters built to OE dimensions and fitment standards. The AP Exhaust 641243 is manufactured to support consistent fitment and emissions-system replacement on the listed Nissan Frontier and Nissan Xterra applications.

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 Pickup3.3LV6131.1"RightDirect 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.; Long Bed
2004NissanFrontier3.3LV6RightDirect Fit; 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.
2004NissanXterra3.3LV6Front RightDirect 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.
2004NissanXterra3.3LV6RightDirect Fit; 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 Pickup3.3LV6131.1"RightDirect 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.; Long Bed
2003NissanFrontier3.3LV6RightDirect Fit; 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.
2003NissanXterra3.3LV6Front RightDirect 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.
2003NissanXterra3.3LV6RightDirect Fit; 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.
2002NissanFrontier4WD3.3LV6116.1"RightDirect 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.
2002NissanFrontierRWD3.3LV6116.1"RightDirect 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.; Desert Runner
2002NissanFrontier3.3LV6RightDirect Fit; 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.
2002NissanXterra3.3LV6N/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.
2002NissanXterra3.3LV6RightDirect Fit; 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.