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SKU: 99305HM / UPC: 841380031280
MagnaFlow Universal HM Grade Catalytic Converter 2.25" (GM 3.8L Compatible)
Keep your check engine light off and restore proper emissions performance with the MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter.
This versatile 2.25" universal converter is engineered to fit a wide range of vehicles, including GM 3.8L applications. Built from highly corrosion-resistant stainless steel with a compact, low-mass design, it offers excellent thermal efficiency and long-term durability.
The single laser fusion weld minimizes leak risk, while the precision construction ensures reliable OBDII compliance for Federally registered vehicles. Whether you're replacing a failed converter or building a custom exhaust, this MagnaFlow universal unit delivers professional-grade performance and peace of mind.
Key Features
- Universal Fitment – Designed to work with a wide array of vehicles, including GM 3.8L applications
- HM Grade Federal/EPA Compliant – Meets or exceeds all Federal emissions requirements for OBDII vehicles
- Stainless Steel Construction – Highly resistant to corrosion for long-term durability
- Single Laser Fusion Weld – Greatly reduces the possibility of leaks
- Compact Low-Mass Design – Improves thermal efficiency and reduces heat soak
- Easy Installation – Universal design allows for flexible custom or OEM-style applications
Specifications
| Detail | Value |
|---|---|
| Brand | MagnaFlow |
| Type | Universal HM Grade Catalytic Converter |
| Inlet/Outlet Size | 2.25 inches |
| Material | Stainless Steel |
| Compliance | Federal/EPA Compliant (OBDII) |
| Design | Compact Low-Mass with Laser Fusion Weld |
| Country of Origin | United States |
| Warranty | MagnaFlow Limited Lifetime Warranty (Converter Body) |
Whats Included
- MagnaFlow Universal Catalytic Converter
- Installation Hardware (where applicable)
- Installation Instructions
Product Notes
- Universal design — professional fabrication or custom installation may be required for some applications
- Meets all Federal/EPA emissions standards for OBDII-compliant vehicles
- Professional installation recommended for best results
This Part Fits
| Application | Notes |
|---|---|
| Universal Fit | Compatible with a wide range of vehicles (2.25" inlet/outlet) |
| GM 3.8L Applications | Commonly used on GM 3.8L V6 engines (verify exact fitment) |
| Custom Exhaust Builds | Ideal for performance and custom exhaust fabrication |
Why Choose MagnaFlow?
- Industry leader in high-quality catalytic converters and exhaust systems since 1981
- State-of-the-art metrology and precision engineering for reliable performance
- HM Grade converters meet strict Federal/EPA emissions standards
- Backed by a Limited Lifetime Warranty on the converter body
Frequently Asked Questions
- Q: Is this a direct-fit converter?
- A: No. This is a universal converter. It may require custom fabrication or adapters for your specific vehicle.
- Q: Will this fix my check engine light?
- A: Yes, when properly installed and matched to your vehicle’s emissions system, it helps restore proper OBDII compliance.
- Q: What size pipe does it fit?
- A: This converter has 2.25" inlet and outlet connections.
- Q: Is it street-legal?
- A: Yes. It is Federal/EPA compliant and meets all legal standards for OBDII Federally registered vehicles.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure MagnaFlow retail packaging
Catalytic Converter Universal
Universal catalytic converters replace failing OEM converters on vehicles where a direct-fit replacement is unavailable or where a custom exhaust configuration requires a weld-in solution. Selecting the correct substrate size, inlet and outlet diameter, and cell density ensures proper fit and emissions performance. Popular Upgrades The most popular choices include high-flow universal catalytic converters with 400-cell metallic substrates for performance applications, standard-density 3-way catalytic converters for emissions-legal replacements, and high-temperature stainless steel bodies for durability under extreme exhaust heat. High-flow options from MagnaFlow and similar brands reduce backpressure while maintaining catalytic efficiency. What size universal catalytic converter do I need? Universal catalytic converter sizing is based on inlet and outlet pipe diameter, body length, and overall length. Common inlet sizes range from 1.75 to 3 inches. Matching the converter to your exis...
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MagnaFlow
MagnaFlow exhaust products are built around straight-through muffler technology and high-grade stainless steel construction, delivering a smooth, deep exhaust tone and improved flow across a wide range of vehicle platforms. From daily drivers to dedicated performance builds, MagnaFlow offers vehicle-specific fitment with no cutting or welding required on most applications.Popular UpgradesCat-back exhaust systems are the most popular MagnaFlow upgrade, replacing the muffler and everything behind the catalytic converter for a noticeable improvement in sound and flow. Direct-fit catalytic converters are a go-to for owners facing emissions-related replacements who want an OEM-quality part at a competitive price. Builder's kits and universal mufflers serve custom fabricators who need reliable stainless components without a complete system.What makes MagnaFlow exhaust sound different from competitors?MagnaFlow uses a straight-through perforated core design packed with stainless steel mesh...
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