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MagnaFlow OEM Grade Direct-Fit Catalytic Converter 49643 for the 2000-2007 Chevrolet Suburban 2500 / Silverado 3500

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MagnaFlow 49643 oem grade direct-fit catalytic converter, front three-quarter view of the turntable spin

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MagnaFlow 49643 oem grade direct-fit catalytic converter, rear view of the turntable spin

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MagnaFlow 49643 oem grade direct-fit catalytic converter, rear three-quarter view of the turntable spin

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MagnaFlow 49643 oem grade direct-fit catalytic converter, side view of the turntable spin

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MagnaFlow 49643 oem grade direct-fit catalytic converter, opposite front three-quarter view of the turntable spin

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MagnaFlow 49643 oem grade direct-fit catalytic converter, opposite rear three-quarter view of the turntable spin

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MagnaFlow 49643 oem grade direct-fit catalytic converter, opposite side view of the turntable spin

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MagnaFlow OEM Grade Converter 2000-2007 Chevrolet Suburban 2500

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Brand: MagnaflowSKU / Part #: MAG49643

Regular price: $782.00
Regular price: ~~$782.00~~
Sale price: $782.00
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Subtotal: $782.00

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MagnaFlow OEM Grade Converter 2000-2007 Chevrolet Suburban 2500

Subtotal: $782.00

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Overview

Chasing a P0420 or P0430 on a 2000-2007 Chevrolet Suburban 2500 / Silverado 3500 6.0L/8.1L? The catalyst has to satisfy the factory OBD-II monitors, not just fit. MagnaFlow's OEM Grade 49643 is built for exactly that job and bolts in without cutting or welding. It is catalogued for the 2000-2006 Chevrolet Suburban 2500 (Base, LS, LT), 2001-2006 GMC Sierra 2500 HD (Base, SL, SLE, SLT, WT), 2007 GMC Sierra 2500 HD Classic (SL, SLE, SLT, WT) and 2003, 2006 Chevrolet Silverado 3500 (LT, WT, Base, LS), plus 7 more models in the table below. It replaces the driver-side catalyst only; confirm the position on your vehicle before ordering. It ships at roughly 30 lb.

Features

OEM Grade loading sized for the 6.0L/8.1L OBD-II catalyst monitor
Driver-side position
Fits 2000-2006 Chevrolet Suburban 2500: Base, LS, LT
Fits 2001-2006 GMC Sierra 2500 HD: Base, SL, SLE, SLT, WT
Fits 2007 GMC Sierra 2500 HD Classic: SL, SLE, SLT, WT
8 further models listed in the fitment table

What is in the box

Gaskets and mounting hardware for installation

Specs

Part number	49643
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	30 lb

Construction

OEM Grade catalyst loading for engines with sensitive OBD-II efficiency monitoring
Installs at the factory mounting points without cutting or welding
16-gauge 409 stainless tubing for a long service life
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
Chevrolet	Suburban 2500 (Base, LS, LT)	—	2000-2006	6.0L/8.1L
GMC	Sierra 2500 HD (Base, SL, SLE, SLT, WT)	—	2001-2006	6.0L/8.1L
GMC	Sierra 2500 HD Classic (SL, SLE, SLT, WT)	—	2007	6.0L/8.1L
Chevrolet	Silverado 3500 (LT, WT, Base, LS)	—	2003, 2006	6.0L/8.1L
Chevrolet	Silverado 3500 Classic (LS, LT, WT)	—	2007	6.0L/8.1L
Chevrolet	Silverado 2500 HD (Base, LS, LT, WT)	—	2001-2006	6.0L/8.1L
Chevrolet	Avalanche 2500 (LS, LT)	—	2006	6.0L/8.1L
GMC	Sierra 3500 (SLT, WT, Base, SL, SLE)	—	2003, 2006	6.0L/8.1L
GMC	Sierra 3500 Classic (SL, SLE, SLT, WT)	—	2007	6.0L/8.1L
GMC	Yukon XL 2500 (SLE, SLT)	—	2000-2006	6.0L/8.1L
Chevrolet	Silverado 2500 HD Classic (LS, LT, WT)	—	2007	6.0L/8.1L

Fitment

Year	Make	Model
2000–2006	Chevrolet	Suburban 2500
2001–2006	GMC	Sierra 2500 HD
2007–2007	GMC	Sierra 2500 HD Classic
2003–2003	Chevrolet	Silverado 3500
2006–2006	Chevrolet	Silverado 3500
2007–2007	Chevrolet	Silverado 3500 Classic
2001–2006	Chevrolet	Silverado 2500 HD
2006–2006	Chevrolet	Avalanche 2500
2003–2003	GMC	Sierra 3500
2006–2006	GMC	Sierra 3500
2007–2007	GMC	Sierra 3500 Classic
2000–2006	GMC	Yukon XL 2500
2007–2007	Chevrolet	Silverado 2500 HD Classic

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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