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MERCURY GRAND MARQUIS Parts and Accessories

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Results 1 - 24 of 49

On Sale

SCT X4 Power Flash Programmers

SCT X4 Power Flash programmers arrive to you pre-loaded with dyno-proven tune files for select vehicles, to unlock your vehicle's hidden potential! Programming your vehicle with one of SCT's pre-loaded tune files is as easy as 1-2-3. Simply plug the OBD-II connector into vehicle's OBD-II port, select the pre-loaded tune files using the simple to navigate menu and in minutes the X4 programs your vehicle for your particular driving style. Additional features and facts about SCT X4 Power Flash programmers include: * Stores up to 10 custom tune files * Full color LCD display * High-speed data logging/monitoring * Reads/clears DTC trouble codes * Dual analog inputs * Most popular vehicles supported * Installs quickly and easily * Easy restoration back to stock * User adjustable vehicle parameters * USB Interface cable included

4.04 out of 5 stars ( 97 )

$399.00


$349.00

On Sale

Summit Racing™ Premium EFI Intake Manifolds

Stock intake manifolds in electronic fuel injection vehicles often fall short of lasting for the life of the vehicle. Being molded from polymers they tend to warp or crack and start leaking vacuum or coolant over the years. Summit Racing™ Premium EFI intakes are just what you need when it's time to replace your manifold as our design improvements address the failures that occur with existing manifolds for this application on the market today. These units are made to fit your specific vehicle and come complete with the necessary hardware for an easy OE type installation. Make this the last manifold you ever buy for your car or truck. Check out these features and benefits below: • Made in USA by OE Tier 1 Supplier • Aluminum crossover design improvement to mount direct to the cylinder head eliminating coolant exposure and eventual failure at the plastic interface of existing manifolds on the market. • High grade coolant resistant material used in coolant fitting and block out locations to coolant system. All coolant exposure areas are addressed with appropriate material. • Heat staked inserts for coil mounting. • Includes alternator brackets, throttle body adapter (application specific), thermostat, gaskets or O-ring seals, and mounting hardware.

4.53 out of 5 stars ( 47 )

$204.99


$199.99

On Sale

SCT Livewire TS Plus Performance Programmer and Monitors

SCT Livewire TS performance programmer and monitors let you tap your ride's hidden performance and excitement! SCT Livewire plus touch screens are easy to set-up, use, and navigate to quickly upgrade your boring factory-calibrated vehicle computer for a high performance driving experience. These tuner kits are available for both gas and diesel vehicles plus they include a windshield mount to keep your data at eye level. You're not like everyone else and your driving experience doesn't need to be mediocre! Power tune with SCT Livewire TS Plus performance programmer and monitors. SCT Livewire TS Plus features: * Color 4 in. touch screen display * Rear view camera input * Automatic on/off/sleep mode * Holds up to 10 custom tunes * Reads and clears DTC codes * Built-in performance calculator * High-speed data logging and monitoring * User adjustable tune options * User selectable graphics and gauge layouts * User adjustable warnings/alerts * Adjust for different size fuel injectors * Disable CMCV to prevent CEL * Remove, increase, or decrease vehicle's speed limiter * Increase or decrease idle speed * Disable traction control * Add or remove timing by rpm range * Add or remove fuel at wide open throttle * Change transmission shift pressure - automatic transmissions only * Set gear ratio to correct shift patterns and vehicle's speedometer * Set tire size to correct shift patterns and vehicle's speedometer * Stores vehicle's stock file before programming * Supports and holds custom tunes * Adjust electric fan engagement temperature Custom Tune File Adjustable Options: * Increase or decrease idle speed * Remove, increase, or decrease vehicle's rpm limiter in Drive * Remove, increase, or decrease vehicle's rpm limiter in Neutral * Remove, increase, or decrease vehicle's speed limiter * Adjust electric fan engagement temperature * Add or remove fuel at wide open throttle * Set gear ratio to correct shift patterns and vehicle's speedometer * Set tire size to correct shift patterns and vehicle's speedometer * Increase or decrease the wide open throttle shift points of each gear individually * Change transmission shift pressure - automatic transmissions only

4.13 out of 5 stars ( 52 )

$599.00


$539.10

On Sale

SCT Blank Dropship-Only Computer Modules

SCT Performance blank dropship-only computer modules are shipped to you blank, so that your custom tuning provider can install the programming you need for your engine.

5.0 out of 5 stars ( 2 )

$220.00


$178.99

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 ( 234 )

$29.11


$21.83

On Sale

ACCEL SuperStock 4000 Series Spark Plug Wire Sets

ACCEL SuperStock 4000 Series spark plug wire sets will upgrade your OE ignition system for high-spark delivery levels and RFI suppression. They extrude the silicone jacket over a tightly woven, rugged fiberglass braid that meets or exceeds OE specifications. ACCEL offers their SuperStock 4000 Series wire sets in various color schemes to match nearly any application! More product features include: * Jackets rated up to 450 degrees F * 7mm or 8mm yellow, red, black, and blue silicone jackets * Orange and other color-matched spark plug boots with terminals * Available for pre and post-HEI vehicles * Custom-fit, universal, and import

4.57 out of 5 stars ( 131 )

$68.99


$51.74

On Sale

ACCEL SuperStock Ignition Coils

ACCEL SuperStock coils are excellent high-performance coils. They're designed with optimized low resistance and a high turns ratio, for higher energy output. This also results in quicker starts, improved throttle response, and more high-rpm power.

4.86 out of 5 stars ( 92 )

$65.89


$49.42

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.

3.86 out of 5 stars ( 349 )

$230.95


$150.95

On Sale

ACCEL Ford EEC-IV Super Coils

ACCEL Ford EEC-IV Super Coils offer increased throttle response, idle quality, and starting. Their E-core design maximizes energy and voltage output. ACCEL Ford EEC-IV Super Coils are direct bolt-in and plug-in replacements for use with computerized ignitions and Ford TFI distributors. They'll get you the spark you need and the performance you want.

4.56 out of 5 stars ( 25 )

$84.85


$63.64

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.

5.0 out of 5 stars ( 1 )

$176.95


$115.95

On Sale

MSD Ford Blaster Coil-on-Plug Ignition Coil Packs

These MSD Ford Blaster Coil-on-Plug ignition coil packs feature a patented winding design and direct bolt-in replacement. The improved spark energy and voltage of the coil packs, combined with their reliability, have made them a favorite of performance enthusiasts. They are designed as direct bolt-in replacement coils for many SOHC Ford V8 modular engines. The housing and installation are the same as the factory coils, but that is where the similarity ends. Inside the MSD coil packs, engineers used better quality materials to assemble the primary and secondary windings. The MSD Ford Blaster Coil-on-Plug ignition coil packs take the spark energy right out of the coil and put it across the plug gap to improve the combustion and output of the engine.

4.74 out of 5 stars ( 364 )

$59.25

$399.95


$38.51

$299.95

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 ( 799 )

$27.13

$326.95


$20.35

$142.95

On Sale

Method Race Wheels MR301 The Standard Matte Black Wheels

Method Race Wheels MR301 The Standard matte black wheels combine cutting-edge looks with excellent performance. The 10 spokes provide uniform strength between the inner and outer rim, while the stainless steel imitation beadlock bolts add rugged style. These one-piece cast aluminum wheels have a black finish with matte clearcoat for corrosion protection—and push-through branded hub covers. Method Race MR301 The Standard matte black wheels provide a wild look while guiding your ride through streets and trails.

4.67 out of 5 stars ( 3 )

$239.00

$299.00


$203.15

$254.15

On Sale

Mr. Gasket Chrome Fuel Pump Block-Off Plates

These fuel pump block-off plates cover the opening left when you convert from a mechanical to an electric fuel pump. They're made from precision-cut steel that's highly polished and chrome plated. Gaskets are included.

4.64 out of 5 stars ( 28 )

$18.86


$12.26

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

MSD Timing Pointers

MSD timing pointers are CNC-machined from 6061-T6 billet aluminum. These adjustable pointers are fully machine lightened; and each of the main bodies—as well as adjustment assemblies—are black anodized for long-lasting corrosion protection. They are built as direct-fit components, and various part numbers are available to fit multiple-size balancers. MSD timing pointers are designed to work on small block Chevy, big block Chevy, and small block Ford engines. They have a 4-degree range of movement for you to find the precise timing location. Stainless steel hardware is also included.

4.14 out of 5 stars ( 42 )

$110.95


$61.95

On Sale

ACCEL Fuel Injectors

ACCEL Performance fuel injectors provide precise control of fuel delivery and atomization for increased power, improved throttle response, and better fuel economy. They feature either a high or low-impedance design to function accurately with your vehicle's ECU. ACCEL fuel injectors come complete and ready for installation with precision-molded O-rings and fine-mesh fuel strainers. More product features and notes: * Utilize a new low-mass disc design that ensures a spray pattern for ultra-fine atomization and improved burn efficiency * Higher than stock flow rates may require reprogramming

4.79 out of 5 stars ( 219 )

$88.45


$57.49

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

Mr. Gasket Water Necks

Mr. Gasket offers replacement water necks in a variety of styles, materials, finishes, sizes, and angles. Water necks help to hold the vehicle's thermostat in place as it opens and closes—to regulate the flow of coolant through your engine. The opening in the water neck created by the thermostat allows coolant to flow from the radiator back to the engine. Order the model recommended for your vehicle.

3.69 out of 5 stars ( 113 )

$34.72


$22.57

On Sale

Mickey Thompson Classic III Polished Wheels

An update of a retro style, Mickey Thompson Classic III wheels are designed for your rig, trailer, and toy hauler. These beautifully polished wheels offer a high load rating and a greater number of fitments to dress up your ride. Classic III wheels feature a concave profile, 8-hole design with a smooth outer lip, and a non-corrosive, screw-on center cap. They're finished with a deeply embossed Mickey Thompson logo for added appeal. More style, more sizes, more load—Classic III wheels are oldies but goodies made better by Mickey Thompson.

4.69 out of 5 stars ( 52 )

$295.99


$275.99

On Sale

MSD Pro-Billet Dual Pickup Distributors

These Pro-Billet dual pickup distributors from MSD are specifically designed for Circle Track racing. Not only do they feature a strong, CNC-machined billet 6061-T6 aluminum housing and a large steel shaft, but they also feature two magnetic pickups for a complete redundant ignition system that can be activated at the flip of a switch. The pickups are triggered as a precision reluctor, mounted to the oversized shaft, spins past. The pickups are placed precisely 180 degrees apart so that when you switch to the secondary ignition, the timing remains constant. Guiding the distributor shaft is the responsibility of two sealed ball bearings for incredible endurance and high-end stability. The shaft also receives a QPQ coating for corrosion resistance and friction reduction. Additional features include a fully adjustable mechanical advance consisting of a hardened advance cam, chromoly weights, and weight pins that are TIG-welded to the advance plate. The entire assembly is welded to the polished steel. The advance assembly can also be easily locked out for quick tuning changes. The Chevrolet model features two O-ring grooves at the base of the CNC-machined housing to prevent oil in the lifter valley from leaking through the oil passage. If the engine deck, heads, or intake have been modified, there is an adjustable slip collar that allows you to set the correct installation depth. All dual pickup distributors include a cap and rotor.

Not Yet Reviewed

$649.95


$357.95

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

3.2 out of 5 stars ( 10 )

$349.95


$192.95

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.

3.77 out of 5 stars ( 40 )

$472.99


$422.99

On Sale

MSD 8.5mm Super Conductor Spark Plug Wire Sets

MSD 8.5mm Super Conductor spark plug wire sets feature a special helically wound core that has just 40-50 ohms of resistance per foot—but with an RFI suppression equal to a 1,500 ohm wire. In fact, each foot of finished wire includes 40 ft. of tightly wound copper for superior conductivity. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference "choke." This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. A tough, 8.5mm synthetic/silicone jacket over an extra-heavy glass braid and dielectric insulator keeps the current guided to the plugs. Underneath the high-temperature boots, dual crimp stainless steel terminals feature snap-locks to ensure a secure fit. Each set comes with clip-on cylinder markers for easy identification. MSD's 8.5mm Super Conductor wire sets are available in custom or universal-fit applications, assembled or not, with a variety of terminal and boot end options.

4.66 out of 5 stars ( 1948 )

$199.95


$109.95

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