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MagnaFlow OEM Grade Direct-Fit Catalytic Converter 21-477 for the 2012-2015 Mercedes-Benz C250 / SLK250

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MagnaFlow 21-477 shown out of the box, photo 10

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MagnaFlow 21-477 oem grade direct-fit catalytic converter, rear three-quarter view of the turntable spin

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MagnaFlow 21-477 oem grade direct-fit catalytic converter, opposite rear three-quarter view of the turntable spin

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MagnaFlow 21-477 oem grade direct-fit catalytic converter, opposite front three-quarter view of the turntable spin

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MagnaFlow 21-477 oem grade direct-fit catalytic converter, side view of the turntable spin

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MagnaFlow 21-477 shown out of the box, photo 26

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MagnaFlow 21-477 shown out of the box, photo 28

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MagnaFlow 21-477 oem grade direct-fit catalytic converter, rear view of the turntable spin

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MagnaFlow 21-477 oem grade direct-fit catalytic converter, opposite side view of the turntable spin

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MagnaFlow OEM Grade Converter 2012-2015 Mercedes-Benz C250 / SLK250

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Brand: MagnaflowSKU / Part #: MAG21-477

Regular price: $624.00
Regular price: ~~$624.00~~
Sale price: $624.00
Unit price: per

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Subtotal: $624.00

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MagnaFlow OEM Grade Converter 2012-2015 Mercedes-Benz C250 / SLK250

Subtotal: $624.00

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Overview

Chasing a P0420 or P0430 on a 2012-2015 Mercedes-Benz C250 / SLK250 1.8L? The catalyst has to satisfy the factory OBD-II monitors, not just fit. MagnaFlow's OEM Grade 21-477 is built for exactly that job and bolts in without cutting or welding. It is catalogued for the 2012-2015 Mercedes-Benz C250 (Base, Luxury, Sport) and 2012-2015 Mercedes-Benz SLK250 (Base). It replaces the close-coupled catalyst only; confirm the position on your vehicle before ordering. Shipping weight is about 11 lb.

Features

OEM Grade loading sized for the 1.8L OBD-II catalyst monitor
Close-coupled position
Fits 2012-2015 Mercedes-Benz C250: Base, Luxury, Sport
Fits 2012-2015 Mercedes-Benz SLK250: Base

What is in the box

Gaskets and mounting hardware for installation

Specs

Part number	21-477
Type	OEM Grade Direct-Fit Catalytic Converter
Emissions	Federal/EPA compliant (not for CARB states)
Grade	OEM Grade
Material	16-gauge 409 stainless steel
Shipping weight	11 lb

Construction

OEM Grade catalyst loading for engines with sensitive OBD-II efficiency monitoring
Direct-fit layout: no cutting, welding or pipe stretching
Corrosion-resistant 16-gauge 409 stainless construction
Spun body closed with a single laser-fusion weld to resist leaks
Mandrel-bent inlet and outlet pipes keep factory flow
OE-sized 410 stainless hangers
308 stainless MIG welds
Shape developed from 3D scans of the original part

Installation

Direct-fit and bolt-on; a capable DIYer can install it with the right tools, though professional installation is recommended.

Fitment notes

Sold for federal (EPA) emissions use only; it cannot be sold or installed in California, Colorado or New York. Check the fitment table below against your vehicle, including trim and engine.

Fitment

Make	Model	Chassis	Year	Engine
Mercedes-Benz	C250 (Base, Luxury, Sport)	—	2012-2015	1.8L
Mercedes-Benz	SLK250 (Base)	—	2012-2015	1.8L

Fitment

Year	Make	Model
2012–2015	Mercedes-Benz	C250
2012–2015	Mercedes-Benz	SLK250

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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