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MagnaFlow 52642 Y-pipe converter for the 4.3L V6 Silverado, Sierra, Tahoe and Suburban

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Y-pipe with both catalysts, inlets at the top

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Assembly from the driver side with the catalysts low

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Y-pipe standing upright, outlet at the top

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Inlet flanges curling forward from the catalysts

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Both catalysts merging into the outlet pipe

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Catalysts in the foreground with the outlet behind

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MagnaFlow OEM Grade Converter 2014-2020 Chevy / GMC 4.3L V6

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Brand: MagnaflowSKU / Part #: MAG52642

Regular price: $1,013.00
Regular price: ~~$1,013.00~~
Sale price: $1,013.00
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Subtotal: $1,013.00

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MagnaFlow OEM Grade Converter 2014-2020 Chevy / GMC 4.3L V6

Subtotal: $1,013.00

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Overview

GM's 4.3L V6 trucks and SUVs share one Y-pipe converter assembly, sold by GM as 20757674. MagnaFlow 52642 is the OEM Grade replacement for it, Federal/EPA legal, and fits the 2014-2018 Silverado 1500 and Sierra 1500 plus 2015-2020 Tahoe, Suburban, Yukon and Yukon XL with the V6. A crush-ring gasket, donut gasket and Torca clamp come with it for the downstream joint.

Features

OEM Grade, Federal/EPA legal (not for California-emissions vehicles)
Direct replacement for GM 20757674
Fits 4.3L V6: 2014-2018 Silverado/Sierra 1500 and 2015-2020 Tahoe, Suburban, Yukon, Yukon XL
Dual-inlet Y-pipe with both catalysts
Crush-ring gasket, donut gasket and Torca clamp included

What is in the box

1 x crush-ring gasket
1 x donut gasket
1 x Torca clamp

Specs

Part number	52642
Type	OEM Grade Direct-Fit Catalytic Converter
Emissions	Federal/EPA compliant (not for CARB states)
Grade	OEM Grade
Material	16-gauge 409 stainless steel
Replaces OE	20757674
Shipping weight	36.3 lb

Installation

Bolts to both manifolds and joins the rear pipe with the supplied Torca clamp. Professional installation is recommended.

Fitment notes

Federal/EPA only: not legal for sale or installation 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 (LS, LT, LTZ, Premier)	—	2015-2020	4.3L
Chevrolet	Tahoe (LS, LT, LTZ, Premier, SSV)	—	2015-2020	4.3L
GMC	Yukon XL (SLT)	—	2015-2020	4.3L
Chevrolet	Silverado 1500 (Custom, High Country, LS, LT, LTZ, SSV)	—	2014-2018	4.3L
GMC	Sierra 1500 (Base, Denali, SLE, SLT)	—	2014-2018	4.3L
GMC	Yukon (SLE, SLT)	—	2015-2020	4.3L

Fitment

Year	Make	Model
2015–2020	Chevrolet	Suburban
2015–2020	Chevrolet	Tahoe
2015–2020	GMC	Yukon XL
2014–2018	Chevrolet	Silverado 1500
2014–2018	GMC	Sierra 1500
2015–2020	GMC	Yukon

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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