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Deal.ai › AP Exhaust › Catalytic Converters
AP Exhaust
AP Exhaust 645159 Catalytic Converter

AP Exhaust 645159 Catalytic Converter

Best price now

$658.03at eBayChecked 21 h ago

17% under what the other stores charge

Compared across 9 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Last seen at $658.03 at eBay on Nov 9.
  • Checked at 9 stores.

Our take on the AP Exhaust 645159 Catalytic Converter

The AP Exhaust 645159 is a direct-fit, dual-inlet catalytic converter for 2020 Chevrolet and GMC trucks and SUVs with the 6.0L V8, including Silverado, Sierra, Tahoe and Yukon XL. It uses a ceramic substrate in a 409 stainless steel shell, bolts to the factory 3-bolt flange and carries an EPA-compliant rating for OBDII vehicles. It is a stock-replacement part, not a performance upgrade: it matches the original fitment rather than adding flow or sound. Shoppers compare it with OEM converters and universal weld-in units; this one saves fabrication but is not legal for California emissions.

Best for2020 Silverado, Sierra, Tahoe or Yukon XL 6.0L V8 ownersDrivers replacing a failed or clogged factory converterBuyers who want a bolt-on fit without weldingOwners in states that follow EPA, not CARB, rules
Pros
  • Direct fit for the listed 2020 GM 6.0L applications
  • Dual inlet and single outlet match the factory layout
  • 409 stainless steel shell resists corrosion
  • Ceramic substrate is the standard OEM-style design
  • Includes sensor ports for the factory oxygen sensors
Cons
  • Not legal for sale or use in California
  • Inlet hardware not included, so old bolts and gaskets may need replacing
  • Heavy at about 25 lbs and long at roughly 46 inches, awkward to handle alone
  • No performance gain over the stock converter

AP Exhaust 645159 Catalytic Converter prices at every store

  • eBayNew

    In stockSold by autopartselite

    $658.03Checked 21 h ago
    Visit eBay
  • CarParts.comNew

    In stock

    $779.99Checked 21 h ago
    Visit CarParts.com
  • Summit RacingNew

    In stock

    $795.99Checked 21 h ago
    Visit Summit Racing
  • FR SportNew

    In stock

    $902.50Checked 21 h ago
    Visit FR Sport
  • eBayPre-owned

    Availability unknownSold by haracenter2 (99.7% positive, 35,200 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $229.99Free shippingChecked 21 h ago
    Visit eBay
  • NAPA Auto PartsNew

    Availability unknown

    $1,218.99Checked 21 h ago
    Visit NAPA Auto Parts
  • WalmartNew

    Out of stock

    $675.23Checked 21 h ago
    Visit Walmart
  • JEGS High PerformanceNew

    Out of stock

    $882.03Checked 21 h ago
    Visit JEGS High Performance
  • AutoZoneNew

    Out of stock

    $1,026.99Checked 21 h ago
    Visit AutoZone

Store links may earn us a commission.

AP Exhaust 645159 Catalytic Converter price history

Lowest price we've seen: $658.03 on Nov 9 at eBay. Tracked across 8 stores since Nov 9.

What reviewers say

Buyers of this converter mostly report it bolting up to the factory flange on 2020 GM 6.0L trucks and SUVs without modification. Complaints center on missing inlet hardware and the extra cost of new bolts and gaskets.

What people mention
  • FitPraisedOwners say it lines up with the factory flange on the listed 2020 GM 6.0L trucks and SUVs.
  • HardwareCriticisedBuyers note inlet bolts and gaskets are not included, adding a trip to the parts store.
  • BuildMixedThe 409 stainless shell and ceramic core are seen as stock-equivalent, not heavy-duty.
  • EmissionsMixedIt is EPA compliant, but shoppers in California and CARB states cannot use it.
  • InstallationMixedA direct fit helps, but the long, heavy unit is hard to hold in place alone.

About the AP Exhaust 645159 Catalytic Converter

AP Exhaust Catalytic Converter-Direct Fit P/N:645159

Specifications

Material Type
Stainless Steel
Vehicle Type
Car
Vehicle Make
Chevrolet
Vehicle Model
Yukon XL, Hybrid Yukon, Sierra, Silverado, Tahoe
Vehicle Year
2020
Engine Type
8-cylinder, 6 L engine
Exhaust System Type
Direct Fit

Questions and answers

Will this fit my 2020 Silverado 6.0L?
It is listed for 2020 Chevrolet and GMC trucks and SUVs with the 6.0L V8, including Silverado, Sierra, Tahoe and Yukon XL. Confirm your engine and wheelbase before ordering, since other engines use different converters.
Is it legal in California?
No. It is EPA compliant but not CARB approved, so it cannot be sold or installed in California or states that adopt California rules.
Does it come with gaskets and bolts?
Inlet hardware is not included. Plan on new flange gaskets and bolts, since the originals often seize or break during removal.
Is it a direct bolt-on or does it need welding?
It is a direct-fit unit with a 3-bolt welded flange and dual inlets, so it bolts to the factory exhaust without welding.
Will it change my exhaust sound or power?
No. It is a stock-replacement converter, so sound and power stay close to the original.
Does it have oxygen sensor ports?
Yes, it has sensor ports for the factory oxygen sensors.
Where is the AP Exhaust 645159 Catalytic Converter cheapest?
At eBay, for $658.03, 17% under what the other stores charge, as of our latest check.
Where can I buy the AP Exhaust 645159 Catalytic Converter?
8 stores we checked sell it, including eBay, Walmart, CarParts.com, Summit Racing, JEGS High Performance.

Stores we've priced the AP Exhaust 645159 Catalytic Converter at

  • Walmart deals and prices

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Compatibility Notes
Specifically engineered for OBDII equipped vehicles
Component Type
Catalytic Converter
Length
48 (overall length (in))
Diameter
46.250
Weight
25 lbs
Standards Compliance
EPA compliant
Sensor Ports
Yes
Catalyst Type
Ceramic
Substrate Material
Ceramic
Hardware Included
No (inlet hardware)
Mounting Type
Direct Fit
Flange Type
3 Bolt Welded Flange
Gasket Material
Gasket
Finish
409 stainless steel shell
Inlet Type
2 (inlet quantity)
Mount Type
Direct Fit
Outlet Type
1 (outlet quantity)