MagnaFlow 452871 Catalytic Converter - Front
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MagnaFlow
 Direct-Fit CALIFORNIA OBDII CONVERTERS

MagnaFlow 452871 Catalytic Converter - Front

Brand MagnaFlow 452871
Position Front
Mounting Hardware Included Yes
Universal Or Specific Fit Specific
Grade Type Regular
Tube Material Stainless steel
Inlet Type Bolt-on
Outlet Type Bolt-on
Heat Shield Attached No
Body Material Stainless steel
Substrate Material Ceramic
Inlet Gasket Included Yes
Overall Length 10.875
Air Tube Count 0
Sensor Port Count 0
Air Tube Adaptable No
Clamp Included No
Converter Quantity 1
Finish Stainless steel
Hangers Included No
Heat Shield Material None
Main Piping Diameter 2
Oxygen Sensor Location None
Type Direct-fit
Product line Direct-Fit CALIFORNIA OBDII CONVERTERS
Fits Nissan · 4 vehicles

Direct-fit replacement. Installs with bolt-on connections and no cutting or welding required.

Stainless steel construction. Corrosion-resistant materials help the converter stand up to harsh conditions.

CARB compliant. Meets California Air Resources Board requirements for legal use where required.

Cross-references 208A0-0Z825, 208A0-9E100 and 208A00Z825 for the same application. See all 6.

$549.10Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

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Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $549.10
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 options

California OBDII Direct-Fit Converter

MagnaFlow 452871 is a California Grade, CARB-compliant direct-fit catalytic converter for the front position on select Nissan Altima models. It is built for a bolt-on replacement using stainless steel construction, mandrel-bent tubing, and an OE-style spun body design for a factory-style fit.

The MagnaFlow Direct-Fit CALIFORNIA OBDII CONVERTERS line is engineered for emissions-focused replacement parts that match original equipment layout and installation points. For drivers needing a direct-fit catalytic converter for a 1998-2001 Nissan Altima, this line focuses on correct fitment, reduced installation complexity, and CARB compliance for listed applications.

  • Fits 2001 Nissan Altima, Front
  • Fits 2000 Nissan Altima, Front
  • Fits 1999 Nissan Altima, Front
  • Fits 1998 Nissan Altima, N/A
  • CARB-compliant California Grade replacement for listed applications
  • Stainless steel body and tubing for corrosion resistance
  • Direct-fit, bolt-on inlet and outlet design
  • OE-style spun body with laser fusion weld construction
  • Ceramic substrate for emissions system service
  • Includes inlet gasket and mounting hardware

MagnaFlow 452871 is designed specifically for the 1998-2001 Nissan Altima and cross-references OE part numbers B0800-5E500 and 208A0-0Z825. It uses 3D-scanned development data to match original equipment geometry, helping the converter align with factory mounting points and exhaust routing. The compact, low-mass design supports thermal efficiency, while the single laser fusion weld helps reduce leak points in the body assembly.

Common Replacement Uses

  • Check engine light caused by a failed catalytic converter
  • Emissions test failure related to converter efficiency
  • Rust-damaged or leaking factory converter housing
  • Exhaust seal issues at the converter connection points
  • Need for a CARB-approved replacement on a listed Nissan Altima

Installation Notes

This direct-fit catalytic converter installs without cutting or welding when used with the proper tools. The bolt-on inlet and outlet simplify replacement, and the included gasket and hardware help avoid reusing corroded factory fasteners or seals. Verify vehicle year, front-position fitment, and CARB application details before installation on your Nissan Altima.

Quality Assurance

MagnaFlow 452871 is built to meet or exceed California Air Resources Board requirements for the listed vehicles and has undergone additional testing for CARB guideline compliance in California and other CARB-restricted states.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2001NissanAltima2.4LL4FrontCertification Level : LEV1 LEV; CARB Executive Order D-193-124; Engine Family Number 1NSXV02.4C4A; Direct-Fit CALIFORNIA OBDII CONVERTERS
2000NissanAltima2.4LL4FrontCertification Level : LEV1 LEV; CARB Executive Order D-193-124; Engine Family Number YNSXV02.433A; Direct-Fit CALIFORNIA OBDII CONVERTERS
1999NissanAltima2.4LL4FrontCertification Level : LEV1 LEV; CARB Executive Order D-193-124; Engine Family Number XNSXV02.433A; Direct-Fit CALIFORNIA OBDII CONVERTERS
1998NissanAltima2.4LL4N/ACertification Level : LEV1 LEV; CARB Executive Order D-193-124; Engine Family Number WNSXV02.433B; Direct-Fit CALIFORNIA OBDII CONVERTERS
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
208A0-0Z825208A0-9E100208A00Z825208A09E100B0800-5E500B08005E500