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Mercury Grand Marquis Headers & Manifolds

At JC Whitney, we offer the best selection of Mercury Grand Marquis Headers & Manifolds parts and accessories. We offer an industry leading 30-day Guarantee so that you can shop with confidence! Narrow your selection below by providing the year of your vehicle for a custom list of Mercury Grand Marquis Headers & Manifolds products.

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17 out of 17 products in Exhaust & Emissions
  • REPLACEMENT OE STYLE EXHAUST MANIFOLD

    Fits Mercury Grand Marquis

    Replacement OE Style Exhaust Manifold is your inexpensive replacement option for your rebuild and maintenance needs. An OE comparable product... more

    Save $109

    On sale from:

    $133.45
    $24.23
  • DORMAN EXHAUST MANIFOLD - TUBLR

    Fits Mercury Grand Marquis

    Dorman's Exhaust Manifold is engineered to perform better than the original OE design. This product stands out above the rest of the competition... more

    Priced from:

    $85.95
  • HEDMAN ENGINE SWAP HEDDER

    HEDMANN ENGINE SWAP HEDDERS. Improve engine efficiency allowing an increase performance by up to 20%. Remove exhaust gasses faster and... more

    Priced from:

    $191.46
  • PATRIOT TIGHT TUCK HEADER

    TIGHT TUCK HEADER. Engineered for street rods and hot rods. Solves many problems associated with engine swaps. Manufactured from durable... more

    Priced from:

    $178.11
  • MBRP DIESEL MUFFLER

    Does your ride have a stock muffler that is just too restrictive or an old muffler that sounded better in days past? Simply replace it... more

    Priced from:

    $119.99
  • PATRIOT FAT-T ROADSTER HEADERS

    FAT-T ROADSTER HEADERS. Slip onto T-bucket headers for great looks and performance. Unique fiberglass wrapped baffle gives you street legal... more

    Priced from:

    $368.14
  • PATRIOT FULL-LENGTH HEADER

    FULL-LENGTH HEADER. Perfect for grafting modern uni-body front clip suspensions to street rods. Longer primary tubes than tight-tuck headers... more

    Priced from:

    $411.61
  • PATRIOT STREETROD HEADER

    STREETROD HEADER. Designed for 1928-1948 Ford chassis vehicles with Chevy small block engine. Specially-suited for high-horsepower engines... more

    Priced from:

    $375.90
  • PATRIOT TRI-5 HEADER

    TRI-5 HEADER. Engineered for 1955-1957 Chevy passenger car engine transplants. Clears most motor mounts. Provides extra ground clearance... more

    Priced from:

    $455.76
  • RACING POWER EXHAUST HEADER KITS

    EXHAUST HEADER KITS. Complete with gaskets and hardware. Shipped separately from factory. NOTE: SKU numbers ending in F are factory shipped... more

    Priced from:

    $222.90

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