2003 Mercury Grand Marquis Engine Cooling Parts

Essential 2003 Mercury Grand Marquis Engine Cooling Parts

Carquest Premium – Radiator Cap: 16 PSI (Part No.10330)

Radiator Cap: 16 PSI

from

$13.49
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Safety lever to vent coolant pressure before removal
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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Motorad – Thermostat Kit: Includes Housing, Thermostat and Seal, 195 Degrees (Part No.5000KT)

Thermostat Kit: Includes Housing, Thermostat and Seal, 195 Degrees

from

$31.49
Kit includes thermostat, housing, and all necessary seals/gaskets to do the complete job. These individual parts are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat and housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
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Dorman – Plastic Drain Cock Long Stem Push-In Style With Captive Thread (Part No.490-239.1)

Plastic Drain Cock Long Stem Push-In Style With Captive Thread

from

$7.29
This radiator drain petcock is a direct replacement for the original equipment plug that may have deteriorated or corroded. Made of quality materials, this petcock is engineered to strict standards for durable use over time.

Product Features:
  • Direct replacement – this radiator drain petcock matches the fit and function of the original equipment part
  • Durable construction – this part is made of quality materials for a long service life
  • Saves money – offers original equipment quality at a competitive price
  • Quality assured – this petcock has undergone virtual testing to assure proper fit and function
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Motorcraft – Original Equipment (O.E.) Sender Assembly (Part No.DY-1144)

Original Equipment (O.E.) Sender Assembly

from

$41.99
The only parts recommended by Ford Motor Company for Ford, Lincoln and Mercury vehicles.

Product Features:
  • Motorcraft and Ford Parts are used throughout Ford vehicles in a variety of applications that help ensure the proper build quality, integrity and long-lasting performance of every Ford car or truck.
  • Motorcraft and Ford Parts are manufactured from first-quality materials – chosen specifically for maximum performance and application suitability.
  • As with all Motorcraft and Ford Parts, any innovations or improvements developed since the vehicle’s manufacture are included in these after market replacement parts, ensuring the most current technology and performance.
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Carquest Premium – Engine Cooling Fan Motor Connector (Part No.PTA1339)

Engine Cooling Fan Motor Connector

from

$18.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Premium – Electronic Automatic Temperature Control Sensor Connector (Part No.PTA3307)

Electronic Automatic Temperature Control Sensor Connector

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$51.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Felpro – Multi-Purpose O-Ring (Part No.35489)

Multi-Purpose O-Ring

from

$9.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
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KAI – Cooling Fan Assembly (Part No.FO3115149)

Cooling Fan Assembly

from

$199.99
New Platinum Pro Fan Assembly

Product Features:
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Dorman – Pressurized Coolant Reservoir: Black And White, Plastic, Original Equipment Replacement (Part No.603-050)

Pressurized Coolant Reservoir: Black And White, Plastic, Original Equipment Replacement

from

$67.99
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.

Product Features:
  • Direct replacement – this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution – engineered for a seamless installation
  • Durable construction – manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design – backed by 100 years of automotive aftermarket experience
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Dorman – Coolant Housing/Water Outlet: With Housing and Gasket, 60 Degree Neck Angle (Part No.902-1001)

Coolant Housing/Water Outlet: With Housing and Gasket, 60 Degree Neck Angle

from

$12.49
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
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Permatex – Sensor-Safe, High Torque RTV Silicone Gasket Maker (Part No.22074)

Sensor-Safe, High Torque RTV Silicone Gasket Maker

from

$6.99
Permatex Ultra Grey is specified for high torque and high vibration applications. Ultra Grey offers a sensor-safe, low odor, non-corrosive formula and is OEM specified to fit dealership warranty requirements. This high performance gasket maker meets performance specs of OE silicone gaskets and can be used on high torque and vibration applications such as valve covers, water pump, intake manifold end seals ad thermostat housings.

Product Features:
  • High torque and rigidity
  • Sensor-safe, non-corrosive formula
  • OEM specified
  • Low-odor, non-corrosive formula
  • Ideal for closed spaced bolt patterns
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KAI – Radiator Support Tie Bar (Part No.FO1225178)

Radiator Support Tie Bar

from

$59.99
New Standard Replacement Radiator Support Lower Tie Bar

Product Features:
  • Made Of Steel
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Carquest Premium – High Flow Thermostat: 170 Degrees (Part No.13967)

High Flow Thermostat: 170 Degrees

from

$14.29
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. With the enlarged Orpheus opening, this high flowing thermostat will allow for more gallons per second to flow. This will allow for the engine to cool down at a faster rate compared to the OE to allow for quick and precise cooling for your engine. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • Larger opening for increased coolant flow
  • Increased strength and durability
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • 100% tested and calibrated
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Felpro – WATER PUMP GASKET SET (Part No.ES 73048)

WATER PUMP GASKET SET

from

$6.79
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Unsurpassed quality you can trust
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Factory Air – Standard Relay (Part No.35928)

Standard Relay

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$23.29
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Precision engineered
  • OE style molded connectors
  • Quality contacts ensure proper conductivity
  • Vehicle specific applications
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Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.432170)

Radiator: With Transmission Oil Cooler

from

$179.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineered with integrated ribbing for added strength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
  • Oil cooler designs meet or exceed OE standards, keeping the vehicle’s engine and transmission performing at optimal conditions
  • OEM grade, premium fittings for transmission or engine oil coolers (where applicable)
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Carquest Premium – Severe Duty Fan Clutch – Thermal Reverse Rotation (Part No.215130)

Severe Duty Fan Clutch - Thermal Reverse Rotation

from

$85.99
Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. CARQUEST fan clutches are designed to meet OE performance specifications.

Product Features:
  • CARQUEST Premium Fan Clutch
  • Severe duty
  • Designed, tested and built by application
  • OE performance, fit and appearance
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Dorman – Radiator Fan Assembly: Single, Cost Effective And Reliable (Part No.620-121)

Radiator Fan Assembly: Single, Cost Effective And Reliable

from

$116.99
This engine cooling fan assembly is precision-engineered to match the fit and performance of the stock radiator fan on specific vehicle years, makes and models. It has been rigorously tested to ensure it cools as effectively as the original part.

Product Features:
  • Ideal replacement – this engine cooling fan assembly was precision-engineered to match the fit and performance of the stock radiator fan assembly on specific vehicles
  • Complete package – assembly is designed with the same materials and components as the original part
  • Quality assured – motors are tested in laboratory settings to ensure performance
  • Cost effective and reliable – trustworthy manufacturing for far less than same part at the dealership
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Carquest Premium – Engine Coolant Temperature Sending Unit Switch Connector (Part No.PTA1265)

Engine Coolant Temperature Sending Unit Switch Connector

from

$56.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Premium – Engine Cooling Fan Module (Part No.ACC1313)

Engine Cooling Fan Module

from

$94.99
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Motorcraft – Coolant Temperature (Part No.G1053673357MTR)

Coolant Temperature

from

$78.72
Coolant Temperature

Felpro – Engine Water Pump Gasket (Part No.35039)

Engine Water Pump Gasket

from

$2.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Permatex – Sensor-Safe, High-Torque RTV Silicone Gasket Maker (Part No.82194)

Sensor-Safe, High-Torque RTV Silicone Gasket Maker

from

$11.49
Permatex Ultra Grey is specified for high torque and high vibration applications. Ultra Grey offers a sensor-safe, low odor, non-corrosive formula and is OEM specified to fit dealership warranty requirements. This high performance gasket maker meets performance specs of OE silicone gaskets and can be used on high torque and vibration applications such as valve covers, water pump, intake manifold end seals ad thermostat housings.

Product Features:
  • High torque and rigidity
  • Sensor-safe, non-corrosive formula
  • OEM specified
  • Low-odor, non-corrosive formula
  • Ideal for closed spaced bolt patterns
See More

Carquest Premium – Coolant Housing/Water Outlet: Gasket Included (Part No.84831)

Coolant Housing/Water Outlet: Gasket Included

from

$19.49
We are proud to offer this CARQUEST product line: CARQUEST Water Outlets. Our products are engineered and tested to provide years of trouble free operation and designed to be hassle free OE replacement part that meets and/or exceeds OE standards. Backed by over 50 years of mobile temperature control experience, fix it once and fix it right with CARQUST Water Outlets and Thermostat Housings.

Product Features:
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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Driveworks Water Pumps – Water Pump (Part No.58-212H)

Water Pump

from

$51.99
Using advanced re-engineering materials and processes, our remanufactured water pumps match O.E. fit and performance. Each unit is supplied with new, unitized seals and the proper O.E.-specified bearing design to meet the specific radial and axial load re

Product Features:
  • 100% leak testing and hub-pull testing ensures reliable performance.
  • O.E.-supplied NEW unitized seals ensure long-lasting, trouble-free performance.
  • The proper O.E. specified bearing design is installed to meet the specific radial and axial load requirements of each application. This ensures longer bearing life and reliable performance.
  • Thermostat seal and mounting gasket are supplied for ease of installation (where applicable).
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Motorcraft – Water Pump (Part No.G3000306205MTR)

Water Pump

from

$75.29
Motorcraft gas and diesel engine water pumps contain a precision bearing to help deliver a long and efficient performance. Additionally, stamped or cast impellers meet OE pumping requirements.

Product Features:
  • Seal designs use sintered metal or ceramic seats
  • Strong cast-iron or aluminum die-cast housings
  • Bearing housing meets OE load requirements
  • Precision-ground bearings
  • Hubs located for proper belt alignment
  • Includes installation gasket
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Motorcraft – Thermostat O-Ring (Part No.G4030195862MTR)

Thermostat O-Ring

from

$3.89
Thermostat O-Ring

Mahle – Water Outlet Gasket (Part No.G3045949430MAH)

Water Outlet Gasket

from

$12.49
Water Outlet Gasket

2003 Mercury Grand Marquis Engine Cooling Parts

Maybe you’re in the middle of a full rebuild of that 2003 Mercury Grand Marquis. Maybe you just need a couple of Engine Cooling Parts. Either way, Advance Auto Parts has 56 different Engine Cooling Parts in our inventory ranging from $1.41 to $519.99. That means you can find the exact parts or products you need to keep that 2003 Mercury Grand Marquis running smoothly.

Engine Cooling Parts are only as good as their brand. We stock 15 different brands to make sure you have plenty of trusted parts to choose from for your 2003 Mercury Grand Marquis. Permatex, Carquest Premium, and Felpro are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Engine Cooling Parts for your 2003 Mercury Grand Marquis, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 2,310 reviews in this category, some of the top rated parts include Adjustable Thermostatic Fan Control with 4.8 stars and Adjustable Thermostatic Fan Control with 3.4 stars.

So if you’re in the market for aftermarket Engine Cooling Parts to keep your 2003 Mercury Grand Marquis rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Engine Cooling Parts Brands To Make Your 2003 Mercury Grand Marquis Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 Mercury Grand Marquis demands trusted brand parts and products to keep it running. Many trusted brands of Engine Cooling Parts make up Advance Auto Parts’ inventory, and all are ready to help make your Grand Marquis the best it can be. Be sure to browse some of our top Engine Cooling Parts brands and parts.

Popular Motorad UltraStats Engine Cooling Parts

We carry Motorad UltraStats parts in our stock across Thermostats categories, plus more. For a 2003 Mercury Grand Marquis, our most popular Motorad UltraStats Engine Cooling Parts include:
Thermostat: 180 Degrees
from $18.29
(1)
Thermostat: 180 Degrees
Thermostats

Top 2003 Mercury Grand Marquis Engine Cooling Parts from Permatex

Permatex products are another trusted brand when it comes to Engine Cooling Parts for your 2003 Mercury Grand Marquis. Popular Permatex parts include:
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
from $6.99
(288)
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
Engine Water Pump Inlet Pipe Gaskets
Sensor-Safe, High-Torque RTV Silicone Gasket Maker
from $11.49
(95)
Sensor-Safe, High-Torque RTV Silicone Gasket Maker
Water Pump Housing Gaskets
Sensor-Safe, High Torque RTV Silicone Gasket Maker
from $6.99
(9)
Sensor-Safe, High Torque RTV Silicone Gasket Maker
Engine Water Pump Inlet Pipe Gaskets

FAQs for 2003 Mercury Grand Marquis Engine Cooling Parts

What are the most purchased Engine Cooling Parts for the 2003 Mercury Grand Marquis?

Out of 56 Engine Cooling Parts for the 2003 Mercury Grand Marquis, the most popular in our inventory are:
Multi-Purpose O-Ring
from $9.99
(110)
Multi-Purpose O-Ring
Engine Coolant Pipe O-Rings
High Flow Thermostat: 170 Degrees
from $14.29
(16)
High Flow Thermostat: 170 Degrees
Thermostats
Thermostat: 195 Degrees
from $18.29
This product is not rated
Thermostat: 195 Degrees
Thermostats

What are the top-rated 2003 Mercury Grand Marquis Engine Cooling Parts?

Top-rated Engine Cooling Parts for your 2003 Mercury Grand Marquis based on customer reviews/ratings are:
Adjustable Thermostatic Fan Control
from $22.99
(35)
Adjustable Thermostatic Fan Control
“Advance kicks butt”
Adjustable Thermostatic Fan Control
from $55.99
(33)
Adjustable Thermostatic Fan Control
“If you read the instructions it’s pretty self explanatory.”
Engine Water Pump: New, Gasket/Seals Included
from $64.99
(26)
Engine Water Pump: New, Gasket/Seals Included
“First-class product and store staff.”