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MERCURY GRAND MARQUIS Parts and Accessories

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Results 1 - 19 of 19

On Sale

Mr. Gasket High Performance Thermostats

Mr. Gasket high-performance thermostats are designed to resist large variations in coolant pressures that can occur at high rpms. Under these conditions, coolant temperature and pressure fight for control of the thermostat, keeping it from opening at its designed temperature. These balanced high-performance thermostats have brass-and-copper construction, and open at the right temperature regardless of engine rpm.

3.97 out of 5 stars ( 233 )

$29.11

$31.46


$20.45

$21.83

On Sale

U.S. Wheel 658 Series OE Chrysler Black Wheels

U.S. Wheel 658 Series OE Chrysler black wheels are retro reproductions that'll enhance the look of any Mopar vehicle. Each rim is manufactured in-house using state-of-the-art equipment—then thoroughly tested for quality, performance, and DOT compliance. The 658 Series 2-piece wheels have an all-steel construction with matte black powdercoat finish, and. they're available in a variety of size options. Want to take things up a notch? Just add the classic chrome center cap, sold separately here at Summit Racing™.

4.33 out of 5 stars ( 6 )

$176.99

$219.99


$159.29

$197.99

On Sale

B&M Holeshot Torque Converters

A higher-than-stock stall speed as delivered by these B&M Holeshot converters will provide several advantages and benefits to vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low-end power and torque. These high-stall converters allow the engine to launch the car at higher rpm, where more torque is available. They're a very good choice for the typical street machine that is looking for better launch capability and more strength.

3.83 out of 5 stars ( 77 )

$699.95


$384.95

On Sale

VEGE Remanufactured Cylinder Heads

VEGE Remanufactured cylinder heads are a popular choice for performance and value. With its advanced and efficient production process, backed by more than eight decades of experience, VEGE is able to supply remanufactured cylinder heads with a level of quality that equals that of new OEM products—at extremely competitive prices. The rebuilt cylinder heads are carefully inspected, cleaned, and then fully machined and assembled with top-of-the-line components. Unless otherwise noted, the assemblies include a cast iron or aluminum cylinder head, intake and exhaust valves, valve springs, retainers, locks, stem seals, rocker arm studs, and more. Many heads include rocker arms. Nearly a thousand models are available, for fitment on countless applications.

3.74 out of 5 stars ( 39 )

$472.99


$422.99

On Sale

ACCEL 300+ Ferro-Spiral Race Wire Sets

ACCEL 300+ Ferro-spiral race wire sets are custom tailored for race engines and their builders. The oversize wire will stand up to extreme heat and voltage. Their outer layers also resist heat, along with chemicals and moisture, while the high-density insulation eliminates arcing. Leave the competition behind when you order the ACCEL 300+ Ferro-spiral race wire set designed for your application.

Not Yet Reviewed

$176.95


$115.95

On Sale

ACCEL Super Coils

ACCEL Super Coils are engineered for a faster rise time and a longer spark duration. They produce higher spark energy for increased performance. These coils are available for a wide variety of specific engine applications. Order the set designed for your make and model.

4.53 out of 5 stars ( 796 )

$249.95

$326.95


$142.95

$212.95

On Sale

Mr. Gasket Aluminum Layered Exhaust Gaskets

Mr. Gasket aluminum layered exhaust gaskets are reusable header or manifold seals that conform to surface irregularities and warped flanges. They will not shrink, deteriorate, or blow out. They're available for a wide variety of port styles and sizes. Features include: * Manufactured from 0.125 in. "dead soft" aluminum layers * Compresses to .060 in. to create a tight, leak-proof seal * Can withstand intense exhaust heat * Resists deterioration * Easy removal * For high performance street, drag race, road racing, and oval track use

4.37 out of 5 stars ( 60 )

$42.73


$27.77

On Sale

Mr. Gasket Engine Oil Dipsticks and Tubes

The lifeblood of your vehicle is lubricant—which is why Mr. Gasket engine oil dipsticks and tubes are so important. They're small, inexpensive parts that tell you if your oil supply is dangerously low. And besides the function they fulfill, these accessories look great under the hood. Made from steel or billet aluminum, the dipsticks are available in a black, polished, or chrome plated finish. Find the OE-style kit that's built to fit your specific engine application.

3.74 out of 5 stars ( 84 )

$31.48


$20.46

On Sale

Holley Mechanical Fuel Pumps

Holley Street Performance mechanical fuel pumps are designed to work with stock or mildly modified engines. Ranging in performance styles of 80 to 225 gph, their body castings can be rotated 360 degrees to ease mounting in difficult places and they have large orifices for high flow rates. These pumps are not compatible with methanol or alcohol fuels and should not be used with fuel injection systems. A fuel pressure regulator is required for 130 gph versions.

3.85 out of 5 stars ( 347 )

$230.95

$249.95


$150.95

$162.95

On Sale

Frostbite Electric Water Pumps

Frostbite electric water pumps are a must for high performance vehicles where horsepower comes at a premium. They eliminate common issues found in traditional mechanical water pumps--parasitic horsepower loss, heavy cast housings, and impeller drag. Frostbite electric aluminum water pumps are available in black and polished finishes with offerings for popular engine platforms. When it comes to keeping your cooling system performing at peak levels, make it Frostbite! Features include: * Available with cast or billet aluminum housings * Free-up lost horsepower resulting from the use of mechanical pumps * Frostbite logo laser-etched for performance look * Ford applications available with block-off plates * Kits come complete with gaskets, wiring pigtail, and mounting hardware

3.0 out of 5 stars ( 9 )

$349.95

$379.95


$192.95

$208.95

On Sale

QuickTime Flexplate Safety Shields

Driver and spectator safety is imperative at the track, and QuickTime has the quality parts that you need to protect yourself and others. QuickTime safety shields are designed to offer excellent protection in the event of a flexplate explosion. QuickTime flexplate shields are made from durable powdercoated steel and require no transmission trimming for use. These shields meet nearly every sanctioning body's rules and are SFI 30.1 certified.

4.25 out of 5 stars ( 8 )

$181.95


$100.95

On Sale

ACCEL C-Cut Performance Spark Plugs

ACCEL C-Cut Performance spark plugs ignite a better path to high performance for both street and strip applications. Their ground strap aligns with the centerline of the electrode to create a much-improved electrical pathway. This design reduces quenching, shrouding, and obstruction, allowing a hotter, larger flame, better firing energy, and a complete burn. Unshroud the spark to ignite your vehicle's performance; order the ACCEL C-Cut Performance spark plugs designed to fit your engine. More product features include: * Greater fuel efficiency, reduced emissions, increased performance, and better throttle response * Helps eliminate misfiring, rough idle, and overall poor performance * Copper core outperforms iridium and platinum * Machine-rolled threads protect your valuable cylinder heads * Sizes and sets available for thousands of applications

4.55 out of 5 stars ( 386 )

$165.95


$91.95

On Sale

Mr. Gasket Differential Cover Gaskets

These Mr. Gasket differential cover gaskets are ideal for high performance and racing applications. Made of top-quality materials, Mr. Gasket differential cover gaskets are designed to ensure a leak-free seal.

4.76 out of 5 stars ( 21 )

$23.55


$12.95

On Sale

ACCEL Distributor Cap and Rotor Kits

ACCEL performance distributor cap and rotor kits offer superior protection from damaging misfires. High-output racing ignition systems place severe demands on these components, and that's why ACCEL makes sure these kits provide optimal shielding against damage. The ACCEL performance distributor cap and rotor kit designed for your application will defend your parts against high voltage, surges of spark current, and high temperatures, all of which can liquify run-of-the-mill cap and rotor's molded parts! More product features include: * High-quality compound caps ensure stability * Corrosion-resistant inserts help provide high-sparking energy flow

4.38 out of 5 stars ( 69 )

$53.09


$29.20

On Sale

Hays Billet Steel Flywheels

Hays steel flywheels are engineered to handle extreme-duty applications and designed to take the punishment of today's high-horsepower engines. They are CAD-engineered and precision CNC-machined to strict tolerances. Available in weights up to 50 lbs. for specialized applications, most Hays flywheels are drilled with both the Borg and Beck and Long-style clutch patterns. Upgrade to a precision-machined and engineered Hays billet steel flywheel. Features include: * SFI-approved--legal for use in racing classes that require SFI certification * CNC-machined from certified billet steel for maximum strength and durability * CAD-designed for optimum performance and reliability * Offered in internal, external, or neutral (zero) balanced versions * Available for a wide variety of engines Note: When choosing a flywheel, remember that a heavier flywheel stores more energy. A heavy car requires more power (or inertia) to launch without bogging the engine and needs a heavier flywheel. Lighter flywheels create less inertia at launch, but will accelerate faster through the gears.

4.6 out of 5 stars ( 30 )

$412.95

$499.95


$227.95

$274.95

On Sale

Mr. Gasket Valve Cover Gaskets

Mr. Gasket valve cover gaskets are ideal for stock replacement use. They're made from a variety of materials for excellent durability and to seal well in mild performance applications. Most of the gaskets are non-shrink and non-stick, so they can be reused many times. An extra-thick version is also available to provide a bit more clearance between the valve covers and the valvetrain. Note that these gaskets are not intended for race applications. Order the model designed to fit your vehicle and engine application.

4.76 out of 5 stars ( 21 )

$40.63


$22.35

On Sale

Mr. Gasket Exhaust Gaskets

Mr. Gasket has three types of exhaust gaskets--standard, Ultra Seal, and Copperseal. Use the standard for a stock rebuild and the Ultra or Copperseal for extra blowout protection.

4.55 out of 5 stars ( 20 )

$41.64


$22.90

On Sale

Mr. Gasket Alternators

For maximum dependability from your car's electrical system, Mr. Gasket alternators are remanufactured to exceed OEM specifications. Quality chrome plated, they are constructed from high-quality materials and pack enough power to handle the needs of your vehicle's electrical system. Available for early and late-model GM applications along with a variety of Ford models, they can be used as OEM replacements or as one-wire alternators on GM applications.

Not Yet Reviewed

$417.95


$229.95

On Sale

MSD DIS Series Ignition Wiring Harnesses

Installing an MSD DIS series ignition in late models distributorless vehicles involves quite a bit of wiring but is well worth the effort. These MSD DIS series ignition wiring harnesses make the installation effort easy so you can put that new ignition control right to work! Each harness plugs directly into the factory coil pack and harness. Then there are colored wires that connect to the DIS ignition's corresponding wires. No more splicing or cutting your factory wiring.

Not Yet Reviewed

$191.95


$105.95

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