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Mercury Marquis Catalytic Converter

We have 6 Items In-stock. Select a year to continue.
$54.37 List Price $101.33 Save $46.96 Availability: In Stock
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EASTERN CATALYTIC CONVERTER

World-class quality and innovation have made Eastern the best converter manufacturer in the business. 100% of Eastern's research and development efforts goes into making the finest aftermarket and original equipment catalytic converters on the market. Each Eastern catalytic converter uses advanced materials design which retains maximum engine output and maximizes catalytic efficiency. Eastern's proprietary NANO technology chemistry yields highly efficient loadings for lower cost and better converter efficiency.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: EAST70317
  • Brand: Eastern
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Mercury Marquis Years:
  • 1984-1986 | 6 Cyl 3.8L | Base, Brougham
Rating: (see review/s)

"CATALYTIC CONVERTER WORKED PERFECT WASEASY TO INSTALL AND WAS A GOOD PRICE." posted by: ART. on June 11, 2014

"Getting the vehicle to pass smog was easy after having the catalytic converter installed. The hardest part of this whole repair was finding a shop to do the installation. A few calls and a trip across town and the install was completed in one day. No additional parts were needed and that was good on the budget." posted by: sidekick on January 30, 2014 view all 13 reviews

$77.88 List Price $100.78 Save $22.90 Availability: In Stock
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  • Not legal for use in California or in states adopting the California emissions standards
  • Semi-universal design – cut out your old catalytic converter and weld in the new one
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
  • Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These 49-State Legal semi-universal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

  • SKU#: M6694004
  • Brand: Magnaflow
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Mercury Marquis Years:
  • 1983 | 4 Cyl 2.3L | Base, Brougham
  • 1979-1980 | 8 Cyl 5.0L | Base, Brougham
Rating: (see review/s)

"Had it installed quick and easy at the shop. It is a universal converter so it doesnt come with mounting flanges no universal does. You have to take it to a professional as there is cutting and welding involved to fit but thats what makes a universal cheaper. If you want a more do it yourself then get a direct fit converter. I went universal for the savings and it does the job just fine." posted by: Kyle on August 10, 2012

"The 'minor modifications might be required' in the description of this item cost me an additional sixty dollars in labor and parts by a muffler shop. Had I walked away from the shop to call or write to Autopartswharehouse, my engine would have still been in peril due to further delay. 'Performance' is not rated. It takes time to determine a part's performance. How long it lasts counts." posted by: Lengo on May 30, 2012

$79.94 List Price $151.72 Save $71.78 Availability: In Stock
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Catco Catalytic Converter

CATCO is well known for its experience throughout the years in using spot-on manufacturing practices and innovative technologies that paved way in producing one of the world's best and fully integrated catalytic converters today. In order to meet the customer's needs, CATCO has set its standards of catalytic converters that are produced with top-quality design, material, and performance. The CATCO catalytic converter not only delivers all the necessary function that the product should provide but it gives what the customer expects and truly deserve.

Catco catalytic converter Features and Benefits:
  • Constructed with a 409 stainless steel shell to give optimum durability and strength
  • Designs have met EPA and CARB emission requirements as cataloged
Specifications:
  • 14 in. overall length; 2 in. inlet diameter; 2 in. outlet diameter
  • Single inlet and outlet configuration
  • One catalytic converter quantity
  • Ceramic honeycomb substrate material
  • Stainless steel case material
  • Stainless steel tube material
  • Oval body
  • Without oxygen sensor port
  • 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissions

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: CAT6004
  • Brand: Catco
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissions
 
Fits the following Mercury Marquis Years:
  • 1981-1982 | 8 Cyl 4.2L | Base, Brougham
  • 1979-1980 | 8 Cyl 5.8L | Base, Brougham
$62.36 List Price $152.72 Save $90.36 Availability: In Stock
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WALKER CATALYTIC CONVERTER, UNIVERSAL

Walker catalytic converters feature OE style design and fit, thicker OE-quality flanges, oxygen sensor fittings, heat-shielded pipe, and structural brace for enhanced strength and durability.

Features
  • Higher loaded substrate
  • Easy bolt-on installation
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: WK15037
  • Brand: Walker
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Dimensions: 13.25 in. overall length
(see more)
Fits the following Mercury Marquis Years:
  • 1984-1986 | 6 Cyl 3.8L | Base, Brougham
  • 1983 | 6 Cyl 3.3L | Base, Brougham
$192.06 List Price $251.06 Save $59.00 Availability: In Stock
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FLOWMASTER – 50 STATE LEGAL SEMI-UNIVERSAL CATALYTIC CONVERTER

Failed the smog test because of a malfunctioning stock catalytic converter that has come to the end of its life? Don’t panic and send your vehicle off to the junkyard when everything else is running smoothly. Replace that old catalytic converter with a new Flowmaster 50 State Semi-Universal Catalytic Converter and go back in for a retest. Since installing a new converter from any car dealer is exceedingly expensive, using a Flowmaster is a much better alternative. After installing a Flowmaster 50 State Legal Semi-Universal Catalytic Converter, your car, truck or SUV will have a much better chance of passing the smog test and it will not trip check engine lights as well. Flowmaster known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Great for replacing worn out factory original catalytic converters
  • Designed and manufactured in U.S.A.
  • Meticulously engineered internals with the correct precious metals won’t set off check engine lights
  • Mandatory in all states that adopted strict California vehicle emission standards
  • All California Air Resources Board (CARB) requirements are met
  • Catalyst housing is made from stainless steel for longevity
  • Made for a wide selection of popular trucks, SUVs and cars

NOTE: Requires clamps, welding or custom fabrication to install

  • SKU#: F133588020
  • Brand: Flowmaster
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-280-97
(see more)
Fits the following Mercury Marquis Years:
  • 1979-1985 | 8 Cyl 5.0L | Base
  • 1983 | 6 Cyl 3.3L | Base, Brougham
(see more)
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$281.67 List Price $845.00 Save $563.33 Availability: In Stock
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BENCHMARK CATALYTIC CONVERTER

Specifications: Y-pipe

Specifications: Y-pipe

Benchmark catalytic converter is considered to be the industry's standard replacement catalytic converter. It is the recognized leader in fitment and durability. It features perfect fit and repeatability and its performance results are continually monitored by Benchmark's internal emissions laboratory to insure quality loadings which eliminate OBDII issues caused by many universal catalysts.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: BEN20443
  • Brand: Benchmark
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Benchmark limited warranty
 
Fits the following Mercury Marquis Years:
  • 1983-1984 | 6 Cyl 3.8L | Base, Brougham
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