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MERCURY MARQUIS Parts and Accessories
Showing In Stock Items. Show All 45 Items.
McLeod RST Street Twin Clutch Kits
Intended for high-horsepower street fans, the McLeod RST Street Twin clutch kits are economically priced twin disc clutches that use your existing flywheel. Able to handle up to 800 hp, the RST Street Twin clutches remain completely street-drivable. The organic lined clutch discs provide smooth engagement with a soft pedal effort, making these clutch kits ideal for the street performance enthusiast. (For select vehicles where these clutches are not adaptable to your existing flywheel, a new flywheel is included in the kit.) Here are some additional features of the McLeod RST Street Twin clutch kits: * Alignment tool included * Lighter-than-stock pedal feel * Will bolt to factory flywheel * CNC-machined and anodized flywheel adapter ring * Organic disc facing for smooth and even clutch engagement with excellent release qualities * Low rotating mass for quick revs * Blanchard ground floater with multiple straps to reduce noise for streetability
( 87 )
$925.00
Holley Sniper EFI HyperSpark Distributor Kits
Holley Sniper EFI HyperSpark distributor kits were designed to make upgrading your ignition on a Sniper EFI-equipped engine simple. When installed concurrently with a new Sniper EFI system, the combination creates the easiest way to install EFI conversion on the market—and only four flying lead connections are required! The harness only requires one connection to a switched power source, battery positive, battery negative, and fuel pump power. The pre-terminated connectors and a built in 40A relay provides power to all of the components within the system. With the included Sniper EFI main harness you no longer need to run multiple wires to provide switched power for each individual component, which not only helps prevent wiring confusion, but it will also speed up your install time and clean up your engine bay. Simply route the harness and pre-terminated connectors to your HyperSpark coil, distributor, and ignition box and plug them in. Available for all popular engine combinations, these kits come with a distributor, coil, ignition box, and an integrated Sniper EFI harness. Order the application you need. Key features: * Plug-and-Play Sniper EFI main harness replaces the standard Sniper EFI harness with four loose leads, battery positive, battery ground, switched 12 V, and fuel pump power, for a simple and streamline installation * Designed for existing or new Sniper EFI installations (the HyperSpark Master Kit harness retains the same flying lead wire colors as the Sniper EFI main harness; new installations will not use the Sniper EFI standard harness or coil driver * Complete ignition system in a box, including: HyperSpark ignition box, HyperSpark ignition coil, HyperSpark distributor (for your application), and a plug-and-play main harness * HyperSpark distributors feature a Hall Effect crank trigger sensor providing a noise-free rpm signal to the Sniper ECU * Patented clear installation cap eliminates any confusion while installing the distributor * HyperSpark CD ignition box is seal and powder coated to be installed in the harshest of locations * External LED on HyperSpark CD Ignition box helps verify 12 V, cranking rpm, and low battery voltage * 135mJ of spark energy when used with the HyperSpark ignition coil, ensures complete combustion * Integrated ignition coil bracket simplifies mounting the Ignition coil * Ignition coil connector removes any doubt of loose connections at the Ignition coil * Enables timing control on a Sniper EFI Installation
( 23 )
$999.95
Richmond Gear Pro Gear Ring and Pinion Sets
Richmond Gear Pro Gear ring and pinion sets take it a step further. The gear sets are designed for race use only where hard launches and severe heat cycling occurs. They're made from a softer, more malleable 9310 steel alloy to be more resistant to breakage under harsh racing conditions. These gears feature an outstanding rotating weight loss of up to 6 pounds, ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
( 44 )
$760.99
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$829.99
Summit Racing™ Stock Spindle Drum-to-Disc Brake Conversion Kits
Improve your classics brake system performance and reliability by swapping your drum brakes to disc. The Summit Racing™ stock spindle drum-to-disc brake conversion kits have everything you need to mount factory style 4-piston calipers to the original drum brake spindles. No need for new spindles, ball joints, or the additional labor to install. The kits are a direct bolt-on with zero fabrication, cutting, drilling or welding required. All new, high-quality, precision machined components are used to provide a perfect fit and factory appearance. Both manual or power options are available, as well as wheel-only kits with no booster or master cylinder. Summit Racing™ also offers versions that upgrade to cross-drilled and slotted rotors, plus braided hoses. Select the stock spindle drum-to-disc brake conversion kit for your application needs.
( 13 )
$914.98
Quick Fuel SS-Series Carburetors
These Quick Fuel SS-Series carburetors are designed to offer the power of a race carburetor in a streetable package that weighs 5 lbs. less than other carburetors. Manufactured completely from aluminum, they allow you to change the idle feed and offer power valve channel restrictions and idle and high-speed air bleeds for the ultimate in tunability. The solid-state, electric-choke Quick Fuel SS-Series carburetors have billet throttle bodies, billet metering blocks, 4-corner idle systems, secondary jet extensions, and notched secondary floats. The vacuum secondary carburetors feature fuel bowls with a single-sight glass window, while the mechanical secondary carburetors have dual-inlet, dual-sight glass 4500-style fuel bowls and include additional links to tune the secondary opening rate. Quick Fuel has done it--they've created all-aluminum Super Street carburetors that are perfect for your high performance street machine.
( 48 )
$972.95
Eaton Detroit Truetrac Differentials
Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.
( 513 )
$767.99
Quick Fuel HR-Series Carburetors
Quick Fuel HR-Series carburetors are packed full of the features that you'd expect from a high performance carb. They're available in your choice of vacuum or mechanical secondary versions, and you can select the cfm that's right for your specific engine combination. The Quick Fuel HR-Series carburetors feature screw-in air bleeds, QuickSet sight windows in the fuel bowls, 4-corner idle circuits, screw-in idle restrictions, and a bright, shiny finish for durability.
( 49 )
$799.95
PRW Platinum Series Shaft-Mount Rocker Arms
PRW Platinum Series shaft-mount rocker arm systems fulfill the needs of successful racers and performance engine builders at every level. The Performance Quotient PQx rocker arms are made from quality alloy extrusions. These systems include CNC-machined billet steel pedestals, and ground, steel alloy rocker shafts—along with PRW SCM-4135 alloy steel fasteners, studs, and bolts. PRW Platinum Series shaft-mount rocker complete kits include all the components and hardware required for a professional installation. Order the system recommended for your specific vehicle and engine size. Features, items, and specs: * Several systems to suit many cam profiles * 8 pairs of shaft-mount rockers with adjustable cup-style valve lash adjusters * SAE 42100 full complement precision needle and cage roller bearings * Rated up to 750 lbs. open spring pressure * Internal oiling system for long-lasting performance
( 10 )
$779.24
Quick Fuel Street-Q Carburetors
Legendary performance offering more value—Quick Fuel Street-Q carburetors deliver the power without the price. How? By retaining what's most important: the function. Street-Qs feature lightweight cast aluminum metering blocks and cast throttle bodies instead of billet components, so they cost less. But, the Q-Series performance remains: 2-circuit metering, down-leg boosters, changeable idle, high-speed air bleeds, and 4-corner idle. Plus, their universal throttle lever design accommodates Ford A/T kickdowns, 700-R4 bracket mounting holes, and the ability to mount brackets for Chrysler vehicles. Quick Fuel Street-Q carburetors fuel your passion and your budget with race-bred performance at no-frills pricing. Order the model designed for fitment on your vehicle application.
( 26 )
$799.95
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$921.95
Eaton Detroit Lockers
Eaton Detroit lockers are designed to maximize traction by delivering 100 percent of the torque and power to both drive wheels. They are engineered to keep both wheels in a constant drive mode and have the ability to automatically allow wheel speed differentiation when required.
( 80 )
$884.99
MSD Pro-Billet Ready-to-Run Distributors
MSD Pro-Billet Ready-to-Run distributors are the perfect upgrade for weak OE electronic distributors, outdated points distributors, and large HEIs or DuraSparks. All that's required is to install the distributor in the engine, and connect three wires and the coil! A maintenance-free magnetic pickup accurately triggers this ignition with increased output from the amplifier, easily outperforming stock ignitions. It will smooth out the engine's idle, improve starting, and perform at a much higher rpm. The housing is machined from billet 6061-T6 aluminum, using state-of-the-art CNC mills and lathes for a unit with no porosity or weak areas. For stability and endurance, an oversized steel shaft spins in a top-mounted sealed ball bearing, while an extra-long sintered bushing guides the shaft at the base of the housing. This shaft also receives a QPQ coating for low friction wear and resistance against corrosion from humidity and ozone buildup. The distributors feature MSD's adjustable mechanical advance, which allows you to custom-tailor an ignition curve to match your engine's needs. Most models are also available with a vacuum advance canister to help improve economy. Order the model recommended for your vehicle and engine application.
( 335 )
$799.95
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$849.95
On Sale
Hooker Super Competition Headers
With Hooker Super Competition headers, the objective has always been to make the maximum horsepower possible and put it at the optimum point in the power curve. Hooker Super Competition headers feature tuned primary tubes to create optimum pressure between the intake and exhaust systems. Hooker Super Competition headers include premium exhaust gaskets and new mounting bolts. Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.
( 235 )
$921.95
Quick Fuel Q-Series 2-Barrel Circle Track Carburetors
Whether you're a professional racer or an inspired amateur, stay ahead of the competition with Quick Fuel Q-Series 2-barrel Circle Track carburetors. They are comprised of a lightweight aluminum, no-nonsense main body--so they weigh less than other leading competition carburetors. The throttle bodies are CNC-machined to exacting tolerances and also provide exceptional strength. They have tough stainless steel throttle plates and sight glass windows for easy float adjustment, as well as other great features to give you improved throttle response for great track performance. When it comes to performance carburetors, Quick Fuel Q-Series carburetors should be at the top of your list!
( 2 )
$819.95
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.
( 84 )
$767.95
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$849.95
RAM Concept 10.5 Dual-Disc Organic Clutch Kits
RAM Concept 10.5 dual-disc organic clutch kits usher in a new era of RAM clutch design. The Concept kits introduce modular dual-disc systems with effective performance improvements. Perfected design, better performance, and a competitive price ... what an idea! Designed for use on applications with horsepower rating of up to 750. RAM Concept 10.5 dual-disc organic clutch kits feature: * Higher clamp load 10.5 in. pressure plate offers smooth pedal effort and more surface area to dissipate heat * Poly-coil sprung hub top disc allows for dampening on engagement to eliminate harsh starts and transmission fatigue * Billet modular stands are precision-machined to eliminate distortion and provide a stable platform to house the clutch unit
( 8 )
$939.00
On Sale
Proform Slim-Fit Radiator Systems
Proform Slim-Fit radiator systems are groundbreaking units designed up to 40 percent thinner than standard coolant equipment. They seamlessly blend the radiator, fan, thermostat, and shroud to create a unified system that's under 4 in. thick, looks and performs great—and is pre-assembled, ready for an exact fit into your vehicle. With revolutionary engineering, Proform has integrated the motor directly into a uniquely designed core made with state-of-the-art brazing technology. The core itself is a hybrid combination of traditional dual 1 in. tubes and full core-width extruded tubes. Combine this with a high performance fan blade inserted into a smooth aluminum shroud, and the result is the industry's thinnest, most streamlined look. Every Slim-Fit radiator includes a shroud, electric fan with adjustable thermostat, wiring harness, and radiator cap. Order the model recommended to fit your application.
( 24 )
$799.99
Quick Fuel Black Diamond Q-Series 2-Barrel Carburetors
High performance Quick Fuel Black Diamond Q-Series 2-barrel carburetors have been engineered for circle track applications. They feature a high-flow aluminum main body with centered venturi for improved fuel distribution and efficiency. An anti-siphon check valve in the main body helps to reduce pump pullover, and the straight leg boosters enable higher airflow. Q-Series carbs have changeable emulsion bleeds and power valve channel restrictions for better tuning capabilities, as well as adjustable idle mixture screws, power valve blowout protection, and built-in dual sight glass windows for easy float adjustment. The unique PTFE coating provides a highly durable black satin finish; it's impact- and scratch-resistant, and impervious to underhood chemicals. This PTFE coating also offers a 6 percent reduction in fuel temperature, further enhancing your vehicle's performance.
Not Yet Reviewed
$972.95
COMP Cams Sportsman Solid Roller Lifters
COMP Cams Sportsman solid roller lifters feature premium-quality, high-value components designed for sportsman and professional racing, along with high-end street machines. They're available in both needle-bearing and bushing configurations. Each design features two pressurized EDM oil feeds, as well as an edge-orifice feed to the wheel. This delivers a more reliable oil feed than most competing options. COMP Cams Sportsman solid roller lifters are also designed with a shallower oil band than competitors' versions for increased strength and rigidity, while internal machining helps to reduce weight. The body utilizes a skirted wheel that strengthens the lifter ears, and the skirt also provides more contact area with the lifter bore for further lifter stabilization. In addition, staked axles eliminate clips and provide robust axle retention. This feature increases the stiffness of the lifter ears and helps to prevent the ears from spreading. The COMP Cams Sportsman solid roller lifters are built from 8620 premium steel for increased strength and wear resistance and they feature a captured, stainless steel link bar design. The lifters also utilize a tapered and slotted link bar tower for reduced weight and improved aesthetics. Choose the size and options tailored for your engine application.
( 9 )
$855.95
B&M Nitrous Holeshot Torque Converters
Nitrous engines produce some serious horsepower and require a serious torque converter to handle it. B&M nitrous Holeshot torque converters can handle up to 650 hp and are built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates that allow these converters to stand up to the instant horsepower that nitrous delivers. Converters with higher-than-stock stall speed let your ride accelerate better from a dead stop and allow the vehicle to idle better when a big cam is used. Fully furnace brazed, heavy-duty, needle-bearing thrust packages and new turbine hubs are the key features of these converters, along with the anti-balloon plates. These are serious converters for serious street performance cars.
( 21 )
$767.95
Hays Twister 3/4 Race Torque Converters
Hays Twister 3/4 Race performance torque converters are designed to be the perfect solution for your street/strip machine. Hays designed the Twister torque converters to be one step short of being a "Full Race" converter giving you the perfect combination of performance and affordability. Every torque converter is hand built, inspected and tested to ensure they meet the top of the line quality you expect. To ensure consistency and improve performance each converter is built for one transmission with one bolt pattern, meaning a lighter converter to maximize performance. High flow stators promote better cooling and heavy duty Torrington bearings are used to increase strength and durability. Not ready to go a "Full Race" converter, Hays is there for you with their Twister 3/4 Race torque converters.
( 11 )
$767.95
Griffin Exact Fit Radiators
Griffin exact fit radiators feature an OEM-style stamped tank and are made of high-quality lightweight aluminum. They provide seamless installation with no modifications required—and will deliver optimum cooling performance for your auto, truck, musclecar, or hot rod. The radiators are available in downflow and crossflow styles, with many size options for specific vehicles.
( 181 )
$941.00
MagnaFlow California Grade CARB Compliant Universal Catalytic Converters
MagnaFlow California Grade CARB Compliant universal catalytic converters help keep the check engine light off. They offer the right fit for a wide array of vehicles thanks to the adaptable universal design (cutting and welding is required). With highly corrosion-resistant, stainless steel construction, you can have confidence in the quality of these catalytic converters. They are designed to meet or exceed California Air Resource Board requirements and have undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states.
( 3 )
$757.00
Summit Bucks
Griffin Performance Fit Radiator Combos
Griffin Performance Fit combos offer the right fit with the right performance--and the right price! These high performance combos deliver cooling capability for extreme horsepower mixed with modern styling, do-it-yourself installation, and American craftsmanship. In these perfect combinations, Griffin packages their lightweight aluminum radiators constructed with 1.25 or 1.50 in. induction-welded MegaCool tubing, high performance electric fans, hand-formed aluminum shrouds, wiring harnesses, and radiator caps for a complete install. Choose the style and size needed to equip your ride with the ideal solution for engine temperature control--Griffin Performance Fit combos. * Griffin Performance Fit radiator combos may require modifications for installation. * See Griffin Exact Fit radiator combos for installation with no modifications.
( 240 )
$836.00
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$993.00
Be Cool Custom-Fit Aluminum Radiators
Do you want cooling improvement and performance? During a test, a Be Cool aluminum radiator was installed in a 1955 Chevy in about an hour and lowered its operating temperature from 220 degrees to 180 degrees F--even with the air conditioning going full-blast. Be Cool custom-fit aluminum radiators are designed to be an exact fit, and they feature 15 percent more cooling capacity than factory 4-core models. What's more, they can be used with all brands of antifreeze and are available in both standard and polished finishes.
( 124 )
$829.99
