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MagnaFlow OEM Grade Direct-Fit Catalytic Converter 21-439 for the 2010-2012 Mercedes-Benz GLK350

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MagnaFlow 21-439 oem grade direct-fit catalytic converter, rear view of the turntable spin

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MagnaFlow 21-439 oem grade direct-fit catalytic converter, opposite rear three-quarter view of the turntable spin

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MagnaFlow 21-439 shown out of the box, photo 22

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MagnaFlow 21-439 oem grade direct-fit catalytic converter, side view of the turntable spin

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MagnaFlow 21-439 oem grade direct-fit catalytic converter, opposite side view of the turntable spin

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MagnaFlow 21-439 oem grade direct-fit catalytic converter, opposite front three-quarter view of the turntable spin

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MagnaFlow 21-439 shown out of the box, photo 36

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MagnaFlow 21-439 shown out of the box, photo 37

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MagnaFlow 21-439 oem grade direct-fit catalytic converter, rear three-quarter view of the turntable spin

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MagnaFlow OEM Converter 2010-2012 Mercedes-Benz GLK350 21-439

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Brand: MagnaflowSKU / Part #: MAG21-439

Regular price: $732.00
Regular price: ~~$732.00~~
Sale price: $732.00
Unit price: per

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Subtotal: $732.00

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MagnaFlow OEM Converter 2010-2012 Mercedes-Benz GLK350 21-439

Subtotal: $732.00

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Overview

On the 2010-2012 Mercedes-Benz GLK350 3.5L, a light-duty aftermarket cat often brings the check engine light straight back. MagnaFlow's OEM Grade 21-439 is built for exactly that job and bolts in without cutting or welding. Coverage spans 3 model years: 2010-2012 Mercedes-Benz GLK350 (4Matic, Base). This is the underbody converter position, so match it to the unit you are replacing. Shipping weight is about 18 lb.

Features

OEM Grade loading sized for the 3.5L OBD-II catalyst monitor
Underbody position
Fits 2010-2012 Mercedes-Benz GLK350: 4Matic, Base

What is in the box

Gaskets and mounting hardware for installation

Specs

Part number	21-439
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	18 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	GLK350 (4Matic, Base)	—	2010-2012	3.5L

Fitment

Year	Make	Model
2010–2012	Mercedes-Benz	GLK350

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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