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A reliable blower motor relay is crucial for your vehicle's climate control system. When the existing one fails, replacing it promptly ensures you can once again enjoy comfortable cabin temperatures, whether it's hot or cold outside. Choosing a high-quality replacement minimizes the risk of future issues and maintains optimal performance.
Replacement Model: Our relay can perfectly replace the relays numbered G8HL-H71, 39794-SDA-A03, 39794-SDA-A05, and 1R191. The AC relay is 0.87×0.57×1.07 inches in size. Please check the model before purchasing
Precise Circuit Control: The ac relay adopts the precision structure of silver alloy contacts + all-copper electromagnetic coils to achieve millisecond-level current switching response, can stably control 10A-30A load current, and the temperature rise is...
Sturdy and Durable: The plastic shell of the AC compressor relay is sturdy and resistant to falling, tightly fitted, waterproof, exquisite and compact, and does not take up too much space when stored
Intelligent Current Management: The G8HL-H71 AC and starter relay can achieve a current amplification ratio of 1:20, is not easy to short-circuit, and can effectively protect the original vehicle wiring harness from overload risks. It is especially...
4-PIN SPST-NO SPECIFICATIONS: Professional-grade V23134-J53-D642 4-Pin Single Pole Single Throw (Normally Open) high-power relay. Rated for 24VDC systems with a 40A contact load capacity. Measured Dimensions: 1.02" x 1.02" x 1.54" (26 x 26 x 39 mm)
HEAVY-DUTY 24V COMPATIBILITY: Precision-engineered replacement component specifically designed for 24V electrical systems in heavy trucks, buses, and construction equipment (Volvo, Scania, Freightliner). Fits standard high-profile ISO sockets in power...
DIAGNOSTIC CIRCUIT SOLUTION: Effectively resolves electrical failures in 24V HVAC blower motors, radiator cooling fans, and primary power circuits. Solves symptoms such as complete fan motor failure, intermittent power loss, and diagnostic codes SPN...
INDUSTRIAL-GRADE ARC RESISTANCE: Constructed with AgSnO2 (Silver Tin Oxide) contacts for superior electrical conductivity and thermal stability. This specialized material minimizes surface degradation and prevents contact welding during high-surge...
【Practical Function】: AC relays can be used to control a variety of electrical equipment by controlling the on-off of a circuit. And it can convert low voltage and small current signals into high voltage and high current control signals to realize...
【Excellent Quality】: It is made of high quality brass with good corrosion resistance and high electrical conductivity, ensuring a secure electrical connection even under prolonged use. It can effectively resist environmental erosion and extend the...
【High Performance】: This relay offers significant advantages in the automotive industry, responding precisely to AC electrical signals for fast on-off control of circuits. Please note: The number in the last row of the product is the serial number...
【Easy to Carry】: It measures 0.87 x 0.57 x 1.07 inches and is very easy to carry. It is suitable for ordinary cars and easy to operate. You only need to connect the relay with wires, no other tools are needed, convenient for you to use and replace, so...
SPECIFICATIONS & TERMINAL MAPPING: Professional-grade V23134-J59-X431 4-Pin SPST-NO (Single Pole Single Throw - Normally Open) high-power relay. Rated for 12VDC coil with a 70A peak contact load capacity. Standard ISO layout (Terminals...
OEM FITMENT & COMPATIBILITY: Precision-engineered replacement component specifically compatible with Mazda CX-5 (2013, 2014, 2015, 2016) and various Ford applications. Direct interchange for TE Connectivity V23134-J59-X431 and Mazda OE Part G115-67-740
HVAC CIRCUIT DIAGNOSTIC SOLUTION: Effectively resolves electrical failures in HVAC blower motor circuits. Solves common issues such as cabin fans not blowing air, intermittent HVAC operation, and related DTC codes B1238 or P0480. Restores reliable...
INDUSTRIAL-GRADE ARC RESISTANCE: Constructed with AgSnO2 (Silver Tin Oxide) contacts for superior electrical conductivity and thermal stability. This specialized material minimizes surface degradation and prevents contact welding during high-surge...
Quality Material: The a/c relay housing is made of PA66 flame-retardant material with pure copper enameled wires to ensure excellent heat dissipation and magnetism, which enhances resistance to high temperatures and arc erosion, providing excellent...
Excellent Waterproof Performance: The fuel pump relay base is sealed and waterproof with IP67 protection level, waterproof and dustproof, able to work stably in all kinds of humid environments, ensuring long-term reliability and durability of the relay
Relay Specifications: Package contains four starter relays, each model number JD1914-12V-40A, five-pin design, size 1.07 x 0.98 inches, coil power 1.8 watts, coil resistance 90Ω
Easy Installation: The five-pin design of the radiator fan relay makes it easy to replace an existing relay by simply connecting the appropriate wires to the corresponding pins. No additional tools are required, making the installation process easy and...
Heavy-Duty 40 A Switching ：12 VDC relay rated 40 A continuous, ideal for high-current HVAC blower motors or auxiliary fans.
SPST 4-Pin Quick Connect：Form A (SPST-NO) configuration with industry-standard 4-pin quick-connect terminals for plug-and-play installation.
Automotive-Grade Endurance：sealed housing, copper-alloy contacts and high-temperature nylon base withstands under-hood vibration, moisture and heat (-40 °C to 125 °C).
Universal HVAC Fit：compact footprint and standard mounting tab drop into most cars, SUVs and light trucks without modification.
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement High Blower Relays
Compatibility is Key
Before purchasing, always verify that the relay is compatible with your specific vehicle's make, model, and year. Check the product description for a detailed compatibility list or consult your vehicle's owner's manual. Using an incompatible relay can lead to electrical system damage or the relay simply not functioning.
Material and Durability
Look for relays constructed from high-quality materials designed to withstand the heat and vibrations common in an automotive environment. Metal casings are often more durable than plastic ones. Ensure the terminals are corrosion-resistant to guarantee a secure and long-lasting connection.
Brand Reputation and Reviews
Consider established brands known for producing reliable automotive electrical components. Reading customer reviews can provide valuable insights into the real-world performance and longevity of the relay. Pay attention to feedback regarding ease of installation and consistent operation.
Frequently Asked Questions
What are the common signs of a failing blower motor relay?
Symptoms often include the blower motor only working on certain speeds or not working at all. You might also notice an unusual smell or hear clicking sounds coming from the dashboard area when the climate control is on.
Can I replace a blower motor relay myself?
In many vehicles, replacing a blower motor relay is a straightforward DIY task. However, the location can vary, and some may require removing dashboard components. It's advisable to consult your vehicle's repair manual or online tutorials for specific instructions.
How long should a new blower motor relay last?
A quality replacement relay should last for many years, often matching the lifespan of original equipment. Factors like driving conditions and the quality of the part itself can influence longevity.
What is the difference between a blower motor and a blower motor relay?
The blower motor is the component that actually moves the air through your car's vents. The blower motor relay is an electrical switch that controls the flow of power to the blower motor, allowing it to operate at different speeds.
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