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MagnaFlow OEM Grade Direct-Fit Catalytic Converter 280656 for the 2019-2023 GMC Sierra 1500 / Limited }
MagnaFlow 280656 shown out of the box, photo 2 }
MagnaFlow 280656 shown out of the box, photo 10 }
MagnaFlow 280656 oem grade direct-fit catalytic converter, opposite front three-quarter view of the turntable spin }
MagnaFlow 280656 oem grade direct-fit catalytic converter, side view of the turntable spin }
MagnaFlow 280656 oem grade direct-fit catalytic converter, front three-quarter view of the turntable spin }
MagnaFlow 280656 oem grade direct-fit catalytic converter, opposite rear three-quarter view of the turntable spin }
MagnaFlow 280656 oem grade direct-fit catalytic converter, rear view of the turntable spin }
MagnaFlow 280656 oem grade direct-fit catalytic converter, rear three-quarter view of the turntable spin }
MagnaFlow 280656 product photo 34 }
Brand: MagnaflowSKU / Part #: MAG280656
Regular price
$1,060.00
Regular price
$1,060.00
Sale price
$1,060.00
Check your purchasing power Apply at checkout
Subtotal: $1,060.00
MagnaFlow OEM Grade Converter 2019-2023 GMC Sierra 1500 / Limited
Subtotal: $1,060.00

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Overview

On the 2019-2023 GMC Sierra 1500 / Limited 4.3L/5.3L, a light-duty aftermarket cat often brings the check engine light straight back. MagnaFlow's OEM Grade 280656 is built for exactly that job and bolts in without cutting or welding. Listed applications: 2019-2023 GMC Sierra 1500 (AT4, Base, Denali, Elevation, SLT), 2022 GMC Sierra 1500 Limited, 2021-2023 GMC Yukon and 2021-2023 GMC Yukon XL, plus 4 more models in the table below. This is the underbody converter position, so match it to the unit you are replacing. It ships at roughly 34 lb.

Features

  • OEM Grade loading sized for the 4.3L/5.3L OBD-II catalyst monitor
  • Underbody position
  • Fits 2019-2023 GMC Sierra 1500: AT4, Base, Denali, Elevation, SLT
  • Fits 2022 GMC Sierra 1500 Limited
  • Fits 2021-2023 GMC Yukon
  • 5 further models listed in the fitment table

What is in the box

  • Gaskets and mounting hardware for installation

Specs

Part number 280656
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 34 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
  • Single laser-fusion weld on the catalyst shell
  • 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
GMC Sierra 1500 (AT4, Base, Denali, Elevation, SLT) — 2019-2023 4.3L/5.3L
GMC Sierra 1500 Limited — 2022 4.3L/5.3L
GMC Yukon — 2021-2023 4.3L/5.3L
GMC Yukon XL — 2021-2023 4.3L/5.3L
Chevrolet Silverado 1500 (Custom, Custom Trail Boss, High Country, LT, LT Trail Boss, RST, SSV, WT) — 2019-2023 4.3L/5.3L
Chevrolet Tahoe — 2021-2023 4.3L/5.3L
Chevrolet Suburban — 2021-2023 4.3L/5.3L
Chevrolet Silverado 1500 LTD — 2022 4.3L/5.3L
Fitment
YearMakeModel
2019–2023GMCSierra 1500
2022–2022GMCSierra 1500 Limited
2021–2023GMCYukon
2021–2023GMCYukon XL
2019–2023ChevroletSilverado 1500
2021–2023ChevroletTahoe
2021–2023ChevroletSuburban
2022–2022ChevroletSilverado 1500 LTD

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.

Reviews & questions

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