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MagnaFlow OEM Grade Direct-Fit Catalytic Converter 51878 for the 2002-2006 Cadillac Escalade / ESV }
MagnaFlow 51878 main product photo, alternate angle 2 }
MagnaFlow 51878 oem grade direct-fit catalytic converter, rear view of the turntable spin }
MagnaFlow 51878 oem grade direct-fit catalytic converter, front three-quarter view of the turntable spin }
MagnaFlow 51878 oem grade direct-fit catalytic converter, side view of the turntable spin }
MagnaFlow 51878 oem grade direct-fit catalytic converter, opposite front three-quarter view of the turntable spin }
MagnaFlow 51878 oem grade direct-fit catalytic converter, opposite rear three-quarter view of the turntable spin }
MagnaFlow 51878 oem grade direct-fit catalytic converter, opposite side view of the turntable spin }
MagnaFlow 51878 oem grade direct-fit catalytic converter, rear three-quarter view of the turntable spin }
Brand: MagnaflowSKU / Part #: MAG51878
Regular price
$591.00
Regular price
$591.00
Sale price
$591.00
Check your purchasing power Apply at checkout
Subtotal: $591.00
MagnaFlow OEM Grade Converter 2001-2007 Cadillac Escalade / ESV 6.0L
Subtotal: $591.00

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Overview

Efficiency codes on a 2001-2007 Cadillac Escalade / ESV 6.0L usually mean the original catalyst is spent. MagnaFlow's OEM Grade 51878 is built for exactly that job and bolts in without cutting or welding. Listed applications: 2002-2006 Cadillac Escalade (Base), 2003-2006 Cadillac Escalade ESV (Base), 2002-2006 Cadillac Escalade EXT (Base) and 2003-2006 Chevrolet Silverado 1500 (LS, LT, SS), plus 6 more models in the table below. It replaces the driver-side catalyst only; confirm the position on your vehicle before ordering. Shipping weight is about 19 lb.

Features

  • OEM Grade loading sized for the 6.0L OBD-II catalyst monitor
  • Driver-side position
  • Fits 2002-2006 Cadillac Escalade: Base
  • Fits 2003-2006 Cadillac Escalade ESV: Base
  • Fits 2002-2006 Cadillac Escalade EXT: Base
  • 7 further models listed in the fitment table

What is in the box

  • Gaskets and mounting hardware for installation

Specs

Part number 51878
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 19 lb

Construction

  • OEM Grade catalyst loading for engines with sensitive OBD-II efficiency monitoring
  • Bolts in where the original sat, with no cutting or welding
  • Corrosion-resistant 16-gauge 409 stainless construction
  • 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
Cadillac Escalade (Base) — 2002-2006 6.0L
Cadillac Escalade ESV (Base) — 2003-2006 6.0L
Cadillac Escalade EXT (Base) — 2002-2006 6.0L
Chevrolet Silverado 1500 (LS, LT, SS) — 2003-2006 6.0L
Chevrolet Silverado 1500 Classic (SS) — 2007 6.0L
Chevrolet Suburban 1500 (LTZ) — 2006 6.0L
GMC Sierra 1500 (Base, C3, Denali, SLE, SLT, WT) — 2001-2006 6.0L
GMC Sierra 1500 Classic (SLE, SLT) — 2007 6.0L
GMC Yukon (Denali) — 2001-2006 6.0L
GMC Yukon XL 1500 (Denali) — 2001-2006 6.0L
Fitment
YearMakeModel
2002–2006CadillacEscalade
2003–2006CadillacEscalade ESV
2002–2006CadillacEscalade EXT
2003–2006ChevroletSilverado 1500
2007–2007ChevroletSilverado 1500 Classic
2006–2006ChevroletSuburban 1500
2001–2006GMCSierra 1500
2007–2007GMCSierra 1500 Classic
2001–2006GMCYukon
2001–2006GMCYukon XL 1500

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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