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Restore Rear Exhaust Flow with an Exact Fit Converter
MagnaFlow 21-217 is an OEM Grade direct-fit catalytic converter assembly for select Subaru applications. The stainless steel tubing and spun converter body follow the original exhaust path for a bolt-on installation without cutting or welding.
Key Features
- Federal EPA compliant replacement for qualifying OBDII vehicles
- Direct-fit stainless steel tubing with a round spun converter body
- Ceramic catalyst substrate
- Mandrel-bent tubing supports exhaust flow
- Rear underbody installation with bolt-on flanges
- OE interchange coverage for 21-217 includes 44620AC810, 44620AC860, 44620AD520, 44620AD88A, and 44620AD88B
Fitment
| Year | Make | Model | Engine | Position |
|---|---|---|---|---|
| 2012-2016 | Subaru | Impreza | 2.0L H4 | Rear |
| 2013-2015 | Subaru | XV Crosstrek | 2.0L H4 | Rear |
| 2014-2018 | Subaru | Forester | 2.5L H4 | Rear |
| 2015-2019 | Subaru | Outback | 2.5L H4 | Rear |
Use only on a vehicle and emissions configuration listed for this converter. This Federal EPA converter is not CARB certified and is not legal for sale or installation in California, Colorado, or New York.
Specifications
| Detail | Value |
|---|---|
| Manufacturer | MagnaFlow |
| Manufacturer Part Number | 21-217 |
| Series | OEM Grade |
| Product Type | Federal EPA direct-fit catalytic converter |
| Installation Position | Rear underbody |
| Overall Length | 60 inches |
| Converter Body | Round, 9 inches long, 4 inches wide, 4 inches high |
| Inlet | One 2.25 inch bolt-on flange |
| Outlet | One 2.5 inch bolt-on flange |
| Tube and Body Material | Stainless steel |
| Substrate Material | Ceramic |
| Sensor Ports | None |
| Warranty | 5 year limited warranty |
What's Included
- One MagnaFlow 21-217 catalytic converter assembly
- One flange gasket
- One donut gasket
- One Torca clamp
About MagnaFlow
MagnaFlow develops stainless steel exhaust and emissions components with direct-fit designs based on original vehicle geometry. Its OEM Grade converters are built for emissions replacement applications that require Federal EPA compliance.
FAQ
What is the 21-217?It is an OEM Grade rear underbody catalytic converter assembly for the listed Subaru applications.
Is this converter CARB certified?No. It is a Federal EPA converter and is not legal for sale or installation in California, Colorado, or New York.
Does installation require cutting or welding?No. The direct-fit tubing and bolt-on flanges are designed to connect at the original exhaust locations.
Which engine applications are covered?The verified applications use the 2.0 liter H4 or 2.5 liter H4 engine as shown in the fitment table.
Where does this converter install?It installs in the rear underbody position of the exhaust system.
Are gaskets included?Yes. The package includes one flange gasket and one donut gasket.
Is a clamp included?Yes. One Torca clamp is included with the converter assembly.
Does this converter have oxygen sensor ports?No. This assembly has no oxygen sensor ports.
Installation Instructions
- Confirm that MagnaFlow 21-217 matches the vehicle, engine, emissions configuration, and installation position before beginning.
- Allow the exhaust system to cool and support the vehicle using approved lifting points and equipment.
- Disconnect and retain any factory components that are not included with the replacement assembly.
- Remove the original rear underbody converter and clean the mating flanges.
- Position the included flange gasket, donut gasket, and Torca clamp at their matching connections.
- Install the converter assembly without forcing the tubing or mounting points out of alignment.
- Tighten the fasteners and clamp to the applicable vehicle service specifications.
- Start the engine and inspect every connection for exhaust leaks and proper clearance.
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