Mercedes-Benz 300E Cooling and Climate Controls

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Essential Mercedes-Benz 300E Cooling and Climate Controls

Dorman – Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement (Part No.603-643)

Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement

from

$60.99
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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Carquest Premium – A/C Expansion Valve (Part No.T38750)

A/C Expansion Valve

from

$43.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • O-Rings necessary for installation are included.
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Carquest Premium – HVAC Blower Motor Resistor (Part No.RUC1886)

HVAC Blower Motor Resistor

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$531.99
Carquest Premium blower motor resistors are designed to restore proper functionality in the HVAC system while meeting or exceeding original equipment (O.E.) specifications. Carquest Premium blower motor resistors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium blower motor resistors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium blower motor resistors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Manufactured with high quality materials, industry-leading electronic components and strict quality controls
  • Extensive design validation testing and 100% end-of-line tested
  • Gaskets or seals are included if required
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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KAI – Radiator (Part No.RAD453)

Radiator

from

$163.99
New Platinum Pro Radiator, 2.6/2.8/3.0/3.2 Liter Engines

Product Features:
  • 2.6/2.8/3.0/3.2 Liter Engines, Made Of Plastic and Aluminum
  • 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
  • Warranty: 5 Year, Limited
  • Radiator Cap Not Included
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Carquest Premium – A/C Valve Core/Cap (Part No.T26777)

A/C Valve Core/Cap

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$20.99
Carquest A/C Accessories provide a comprehensive offering of premium quality fittings and tools to service all aspects of an a/c service from the most simple fitting replacement to complex diagnostics required for late model applications.
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Carquest Premium – Radiator Cap Tester Adapter (Part No.12552)

Radiator Cap Tester Adapter

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$14.99
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:
  • Machined metal construction
  • Works with MT-300 pressure tester
  • Tests coolant caps
  • Professional quality
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Carquest Premium – Multi-Purpose Relay (Part No.RAA2143)

Multi-Purpose Relay

from

$80.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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Factory Air – Green Round O-Ring (Sold by each) (Part No.24650)

Green Round O-Ring (Sold by each)

from

$1.99
Made from HNBR material; Compatible with R12 And R134A; High quality construction; Universal applications
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Carquest Premium – ABS Wheel Speed Sensor (Part No.ARC2991)

ABS Wheel Speed Sensor

from

$218.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest Premium – Engine Coolant Temperature Sender (Part No.WTA1502)

Engine Coolant Temperature Sender

from

$30.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Engine Coolant Temperature Sensor/Switch accurately monitors the engine’s temperature, enabling timely adjustments to the cooling system and preventing overheating, which enhances engine performance and longevity. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:
  • Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
  • Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
  • Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
  • Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.
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National – Multi-Purpose Bearing (Part No.5000-KFF)

Multi-Purpose Bearing

from

$33.49
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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Carquest Premium – A/C Receiver Drier (Part No.T33423)

A/C Receiver Drier

from

$34.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
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URO Parts – Ac Pressure Switch, Freon Temp. & Aux. Fan At Receiver Drier (Part No.0048206810)

Ac Pressure Switch, Freon Temp. & Aux. Fan At Receiver Drier

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$18.49
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced ¿Genuine¿ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, they’re covered by an unlimited mileage, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.

Product Features:
  • Guaranteed Fitment
  • High Quality Materials
  • Designed and tested to provide a long life
  • Replacement of failed A/C refrigerant pressure sensor restores proper system operation
  • Direct-fit OE replacement design is easily installed
  • Easy plug-and-play wiring connection
  • Manufactured using high-quality polymer and corrosion-resistant metal materials to withstand A/C system heat
  • Alloy conductors minimize electrical resistance for accurate operation
  • Designed and tested for reliability and long life
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Dorman – Auxiliary Coolant Pump (Part No.902-088)

Auxiliary Coolant Pump

from

$322.99
This engine auxiliary water pump is designed to match the fit and function of the original pump on specified applications, and is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this engine auxiliary water pump is designed to match the fit and function of the original pump on specified applications
  • Restores functionality – reliable replacement for an original pump that has failed to provide sufficient water flow
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Standard – Remanufactured Nippondenso 10PA17C Compressor with Clutch (Part No.DW57336)

Remanufactured Nippondenso 10PA17C Compressor with Clutch

from

$265.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.

Product Features:
  • Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function and durability
  • All remanufactured compressors are built using the latest compressor technology available today and using strict remanufacturing processes
  • All units have new seals, O-rings, gaskets and clutch bearings
  • Tested for noise, vibration, durability, vacuum decay and pressure decay to ensure no leaks and longer life
  • Remanufactured compressors are 100 percent tested to ensure compressor function and noise level meets or exceeds OE specifications
  • Remanufactured compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
  • Remanufactured compressors are individually vacuum and pressure tested to ensure no leaks
  • Remanufactured compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor
  • Remanufactured Compressors are built in a ISO9001:2015 Certified facility to ensure consistent quality standards in the Re-manufacturing process
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Dorman – Electrical Harness – 2-Wire GM A/C Clutch with Diode (Part No.85143)

Electrical Harness - 2-Wire GM A/C Clutch with Diode

from

$12.49
This HVAC clutch coil connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this HVAC clutch coil connector matches the appearance and function of the factory hardware on specified applications
  • Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – Engine Coolant Temperature Sensor (Part No.WTA1763)

Engine Coolant Temperature Sensor

from

$109.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% factory resistance calibrated to ensure extremely accurate temperature readings for optimal performance
  • O-rings, seals or thread sealant are included if required
  • Wires, clips and probe length match OE (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Extensive design validation testing and 100% end-of-line tested
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest Premium – Air Conditioner Compressor Speed Sensor (Part No.ACC1605)

Air Conditioner Compressor Speed Sensor

from

$92.99
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
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Carquest Premium – Universal Reverse Rotation Thermal Standard Duty Fan Clutch (Part No.215075)

Universal Reverse Rotation Thermal Standard Duty Fan Clutch

from

$103.99
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:
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
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Factory Air – Green Round O-Ring (Sold by each) (Part No.24610)

Green Round O-Ring (Sold by each)

from

$0.99
Made from HNBR material; Compatible with R12 And R134A; High quality construction; Universal applications
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Carquest Premium – New Nippondenso 10PA17C Compressor with Clutch (Part No.T58336)

New Nippondenso 10PA17C Compressor with Clutch

from

$338.99
New Compressors are built in a ISO9001:2015 Certified facility. These facilities go through several audits to ensure quality standards in the manufacturing process.

Product Features:
  • All compressors go through sophisticated testing and leak test processes
  • Includes specific electrical connector to eliminate splicing
  • For ease of installation this compressor includes all gaskets, O-rings or sealing washers needed to repair your car
  • Validated for fit, form, and function to OE standards
  • New Compressors meet or exceed OE specifications
  • New Compressors are validated for the equivalent of 100,000 miles
  • New Compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
  • New Compressors come with direct fit connectors for ease of installation and to help eliminate splicing
  • New Compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor
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Carquest Premium – A/C Condenser Fan Switch (Part No.ACA2013)

A/C Condenser Fan Switch

from

$98.99
The A/C Condenser Fan Switch is within the A/C high pressure refrigerant circuit. The cut-out switch provides compressor safety by disabling the A/C compressor should the system pressure become too great for safe operation.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
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Carquest Premium – Standard Thermostat: 180 Degrees (Part No.13648)

Standard Thermostat: 180 Degrees

from

$24.99
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. 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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MAHLE Original – Engine Coolant Thermostat Housing Gasket (Part No.C31633)

Engine Coolant Thermostat Housing Gasket

from

$2.49
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:
  • All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
  • MAHLE gaskets is the leader in Domestic, Asian and European applications
  • The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
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Dorman – Coolant Housing/Water Outlet: with Water Outlet and O-Ring, 90 Degree Neck Angle (Part No.902-943)

Coolant Housing/Water Outlet: with Water Outlet and O-Ring, 90 Degree Neck Angle

from

$34.99
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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Helping You Find the Right Cooling and Climate Controls for Your Mercedes-Benz 300E

You love your 300E. So we’ve made it easier than ever to help you find Mercedes-Benz 300E Cooling and Climate Controls in our online catalog. Our inventory holds 48 aftermarket and OEM Cooling and Climate Controls for your Mercedes-Benz 300E, ranging from $0.99 to $809.99.

We offer parts from 10 brands trusted to make quality Cooling and Climate Controls for your Mercedes-Benz 300E. Before you buy, take some time to read through customer reviews. We currently have 1,377 reviews of Mercedes-Benz 300E Cooling and Climate Controls from previous customers. Some of the top rated parts include Radiator with 4.5 stars and Thermostat, 189 Degrees Fahrenheit with 5.0 stars.

Find your 300E Cooling and Climate Controls here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your Mercedes-Benz 300E part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Cooling and Climate Controls Brands for Your Mercedes-Benz 300E

Our inventory holds Cooling and Climate Controls for your Mercedes-Benz 300E from 10 trusted brands. You’ll find OEM and aftermarket parts from brands like Carquest Premium, Factory Air, and Mahle, all of which can keep that Mercedes-Benz happy.
We have MAHLE Original parts available for your Mercedes-Benz 300E in categories like Engine Cooling Parts. Some of the top-rated MAHLE Original parts in these categories are:
Engine Coolant Thermostat Housing Gasket
from $2.49
(1)
Engine Coolant Thermostat Housing Gasket
Thermostat Housing Gaskets

FAQs for Mercedes-Benz 300E Cooling and Climate Controls

What are the most purchased Cooling and Climate Controls for the Mercedes-Benz 300E?

Out of 48 Cooling and Climate Controls for the Mercedes-Benz 300E, the most popular in our inventory are:
Cap & Valve A/C System Seal Kit
from $20.99
(6)
Cap & Valve A/C System Seal Kit
AC Line O-Rings
Radiator Cap: 20 PSI
from $9.49
(3)
Radiator Cap: 20 PSI
Radiator Caps
Green Round O-Ring (Sold by each)
from $1.99
This product is not rated
Green Round O-Ring (Sold by each)
AC Compressor Seals

What are the top-rated Mercedes-Benz 300E Cooling and Climate Controls?

Top-rated Cooling and Climate Controls for your Mercedes-Benz 300E based on customer reviews/ratings are:
Radiator
from $223.99
(2)
Radiator
“Perfect replacement to the original”
Thermostat, 189 Degrees Fahrenheit
from $45.49
(1)
Thermostat, 189 Degrees Fahrenheit
“it worked and fit perfect”
A/C Expansion Valve
from $33.99
(1)
A/C Expansion Valve
“it fit”