# MagnaFlow 23421 Direct Fit Standard Catalytic Converter (2" ID/2" OD) for 1986-1989 Buick Century and More

### Performance Overview

The Direct Fit Catalytic Converter is designed with a ribbed body that can reduce expansion and distortion when the converters heat up. These ribs holds the ceramic catalyst in a proper position and it also forms a channel that shields the cushioning mat from direct exposure to exhaust gases. The ceramic coating is made for maximum surface area and flow, and the coating method is strictly controlled so that exact

### Key Features

-   Brand: MagnaFlow
-   Part number: 23421
-   Product type: Direct Fit Standard Catalytic Converter (2" ID/2" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   1986 Buick Century, Note: Custom, Estate Wagon, Limited; 2.8L; 2.00"; 2.00"
-   1987 Buick Century, Note: Custom, Estate Wagon, Limited; 2.8L; 2.00"; 2.00"
-   1988 Buick Century, Note: Custom, Estate Wagon, Limited; 2.8L; 2.00"; 2.00"
-   1989 Buick Century, Note: Custom, Limited; 2.8L; 2.00"; 2.00"
-   1986 Chevrolet Celebrity, Note: Base, Estate, Eurosport; 2.8L; 2.00"; 2.00"
-   1987 Chevrolet Celebrity, Note: Base, Estate, Eurosport; 2.8L; 2.00"; 2.00"
-   1988 Chevrolet Celebrity, Note: Base, Eurosport; 2.8L; 2.00"; 2.00"
-   1989 Chevrolet Celebrity, Note: Base, Cl, Eurosport; 2.8L; 2.00"; 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 23421.

**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

-   Direct Fit Standard Catalytic Converter (2" ID/2" OD) for Buick Century
-   23421 fitment
-   MagnaFlow Direct Fit Standard Catalytic Converter (2" ID/2" OD)
-   1986 Buick Century Direct Fit Standard Catalytic Converter (2" ID/2" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

1986

Buick

Century

Custom, Estate Wagon, Limited; 2.8L; 2.00"; 2.00"

1987

Buick

Century

Custom, Estate Wagon, Limited; 2.8L; 2.00"; 2.00"

1988

Buick

Century

Custom, Estate Wagon, Limited; 2.8L; 2.00"; 2.00"

1989

Buick

Century

Custom, Limited; 2.8L; 2.00"; 2.00"

1986

Chevrolet

Celebrity

Base, Estate, Eurosport; 2.8L; 2.00"; 2.00"

1987

Chevrolet

Celebrity

Base, Estate, Eurosport; 2.8L; 2.00"; 2.00"

1988

Chevrolet

Celebrity

Base, Eurosport; 2.8L; 2.00"; 2.00"

1989

Chevrolet

Celebrity

Base, Cl, Eurosport; 2.8L; 2.00"; 2.00"

1986

Oldsmobile

Cutlass Ciera

Brougham, Es, Gt, Holiday, Ls, S, Sl; 2.8L; 2.00"; 2.00"

1987

Oldsmobile

Cutlass Ciera

Brougham, Gt, Ls, S, Sl; 2.8L; 2.00"; 2.00"

1988

Oldsmobile

Cutlass Ciera

Base, Brougham, Ls, S, Sl; 2.8L; 2.00"; 2.00"

1989

Oldsmobile

Cutlass Ciera

Base, Sl; 2.8L; 2.00"; 2.00"

1987

Oldsmobile

Cutlass Cruiser

Brougham, Ls; 2.8L; 2.00"; 2.00"

1988

Oldsmobile

Cutlass Cruiser

Brougham Ls, Ls, Sl; 2.8L; 2.00"; 2.00"

1989

Oldsmobile

Cutlass Cruiser

Base, Sl; 2.8L; 2.00"; 2.00"

1986

Pontiac

6000

Base, Le, Se, Ste; 2.8L; 2.00"; 2.00"

1987

Pontiac

6000

Base, Le, Se, Ste; 2.8L; 2.00"; 2.00"

1988

Pontiac

6000

Base, Le, Se, Ste; 2.8L; 2.00"; 2.00"

1989

Pontiac

6000

Le, Special Edition; 2.8L; 2.00"; 2.00"

## Details

- **Price:** 344.62 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct Fit Standard Catalytic Converter (2" ID/2" OD)
- **Tags:** 1986 Buick Century, 1986 Chevrolet Celebrity, 1986 Oldsmobile Cutlass Ciera, 1986 Pontiac 6000, 1987 Buick Century, 1987 Chevrolet Celebrity, 1987 Oldsmobile Cutlass Ciera, 1987 Oldsmobile Cutlass Cruiser, 1987 Pontiac 6000, 1988 Buick Century, 1988 Chevrolet Celebrity, 1988 Oldsmobile Cutlass Ciera, 1988 Oldsmobile Cutlass Cruiser, 1988 Pontiac 6000, 1989 Buick Century, 1989 Chevrolet Celebrity, 1989 Oldsmobile Cutlass Ciera, 1989 Oldsmobile Cutlass Cruiser, 1989 Pontiac 6000, 23421, Auto Parts, Automotive, Catalytic Converter, Direct Fit Standard Catalytic Converter (2" ID/2" OD), Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-23421, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 344.62 CAD | In stock |

## Images

- MagnaFlow 23421 Direct Fit Standard Catalytic Converter (2" ID/2" OD)

---

> Source: [Standard Auto Part](www.standardautopart.com/products/magnaflow-buick-century-catalytic-converter-23421)
> Updated: 2026-06-13