# MagnaFlow 50809 Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD) for 2004-2009 Nissan Altima and More

### Performance Overview

Magnaflow specializes in performance catalytic converter. They've spent over thirty years creating, developing, and improving on their technology to earn their reputation as being the global market leader. magnaflow's Heavy Metal catalytic converters use a combination of ceramic and metallic substrates as well as wall thickness specifically developed for your specific vehicle needs.

### Key Features

-   Brand: MagnaFlow
-   Part number: 50809
-   Product type: Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2004 Nissan Altima, Note: Se; 3.5L; 4.13"; 2.00"; Manual Trans
-   2005 Nissan Altima, Note: Se, Se-R, Sl; 3.5L; 4.13"; 2.00"
-   2006 Nissan Altima, Note: Se, Se-R, Sl; 3.5L; 4.13"; 2.00"
-   2004 Nissan Maxima, Note: Se, Sl; 3.5L; 4.13"; 2.00"; Automatic Trans
-   2005 Nissan Maxima, Note: Se, Sl; 3.5L; 4.13"; 2.00"; Automatic Trans
-   2006 Nissan Maxima, Note: Se, Sl; 3.5L; 4.13"; 2.00"; Automatic Trans
-   2004 Nissan Quest, Note: S, Se, Sl; 3.5L; 4.13"; 2.00"
-   2005 Nissan Quest, Note: Base, S, Se, Sl; 3.5L; 4.13"; 2.00"

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is 50809.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD) for Nissan Altima
-   50809 fitment
-   MagnaFlow Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD)
-   2004 Nissan Altima Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004

Nissan

Altima

Se; 3.5L; 4.13"; 2.00"; Manual Trans

2005

Nissan

Altima

Se, Se-R, Sl; 3.5L; 4.13"; 2.00"

2006

Nissan

Altima

Se, Se-R, Sl; 3.5L; 4.13"; 2.00"

2004

Nissan

Maxima

Se, Sl; 3.5L; 4.13"; 2.00"; Automatic Trans

2005

Nissan

Maxima

Se, Sl; 3.5L; 4.13"; 2.00"; Automatic Trans

2006

Nissan

Maxima

Se, Sl; 3.5L; 4.13"; 2.00"; Automatic Trans

2004

Nissan

Quest

S, Se, Sl; 3.5L; 4.13"; 2.00"

2005

Nissan

Quest

Base, S, Se, Sl; 3.5L; 4.13"; 2.00"

2006

Nissan

Quest

Base, S, Se, Sl; 3.5L; 4.13"; 2.00"

2007

Nissan

Quest

Base, S, Se, Sl; 3.5L; 4.13"; 2.00"

2008

Nissan

Quest

Base, S, Se, Sl; 3.5L; 4.13"; 2.00"

2009

Nissan

Quest

Base, S, Se, Sl; 3.5L; 4.13"; 2.00"

## Details

- **Price:** 704.31 CAD
- **Vendor:** MagnaFlow
- **Type:** Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD)
- **Tags:** 2004 Nissan Altima, 2004 Nissan Maxima, 2004 Nissan Quest, 2005 Nissan Altima, 2005 Nissan Maxima, 2005 Nissan Quest, 2006 Nissan Altima, 2006 Nissan Maxima, 2006 Nissan Quest, 2007 Nissan Quest, 2008 Nissan Quest, 2009 Nissan Quest, 50809, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD), MagnaFlow, Magnaflow-50809, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 704.31 CAD | In stock |

## Images

- MagnaFlow 50809 Heavy Metal Direct Fit Catalytic Converter (4.125 " ID/2" OD OD)

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> Source: [Standard Auto Part](www.standardautopart.com/products/magnaflow-nissan-altima-catalytic-converter-50809)
> Updated: 2026-06-13