STANDARD MOTOR PRODUCTS 67518KTHM Control Relay Smp A/c

( Brand: Standard Motor Products ), ( Manufacturer Part Number: 67518KTHM ), ( Part Type: Control Motor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: A/c Compressor Control Relay ), ( Years: 1976 1972 1973 1977 1978 1974 1979 ), ( Application: Cadillac Eldorado A/c Control Relay ), ( Cs-sku: 400 )

Review STANDARD MOTOR PRODUCTS Cadillac A/c Control Relay Smp fits ELDORADO 1972–1979

Introducing the SMP (Solid State Modular Parts) 67518KTHM AC Control Relay, an essential component for the climate control system in certain Cadillac models from the mid-1970s. Designed specifically for Cadillac Eldorados manufactured between 1976 and 1979, this relay ensures the efficient operation of the vehicle's air conditioning system.

The 67518KTHM is a Motorola-manufactured, standard motor AC control relay that features solid-state technology for enhanced reliability and longevity. Its compact design measures approximately 2.2 inches long, 1.7 inches wide, and 0.8 inches thick, making it a perfect fit for the specific application in these classic Cadillac Eldorados.

This AC control relay plays a crucial role in the vehicle's climate control system by controlling various functions such as compressor engagement, fan operation, and temperature regulation. The relay's internal components include a contactor that switches the AC compressor on and off based on the temperature settings selected by the driver.

The SMP 67518KTHM AC Control Relay is a direct replacement for the original part, offering a plug-and-play installation process. Each relay comes thoroughly tested to ensure proper function and comes complete with all necessary mounting hardware.

In the event of a faulty or failing original AC control relay, replacing it with the SMP 67518KTHM can help restore the cooling system's performance in your Cadillac Eldorado. By providing a reliable solution that maintains the original form, fit, and function, this solid-state replacement ensures a seamless integration into your classic Cadillac while providing improved longevity and reliability.

Buying a 1972-1973, 1977 Cadillac Eldorado Standard Motor A/C Control Relay (67518KTHM)

1. **Function**: This part is essential for the air conditioning system in specific Cadillac Eldorado models between 1972 and 1979. It acts as a relay, controlling the flow of electrical current to various components in the A/C system.

2. **Availability**: Aftermarket parts for older vehicles like the 1976-1979 Cadillac Eldorado can be challenging to find locally. However, online marketplaces offer a wide selection of OEM and aftermarket 67518KTHM relays.

3. **Price**: New OEM relays from Cadillac dealerships can be expensive. Aftermarket alternatives are generally more affordable, offering potential cost savings.

4. **Quality**: OEM relays are manufactured by the vehicle's original equipment manufacturer and are guaranteed to be a perfect fit and function just like the original part. Aftermarket relays, on the other hand, may vary in quality, and some may not function as well or last as long as the OEM parts.

5. **Installation**: Installing a new A/C control relay is generally considered a DIY repair. However, some individuals may prefer to have a professional mechanic perform the installation to ensure the job is done correctly.

6. **Warranty**: OEM relays often come with a warranty from the dealership. Aftermarket relays may or may not come with a warranty, depending on the seller.

7. **Reliability**: A good quality aftermarket relay can be as reliable as an OEM part. However, there's a risk that a lower-quality aftermarket relay may fail prematurely, requiring further repairs or replacements.

In conclusion, buying a 1972-1973, 1977 Cadillac Eldorado Standard Motor A/C Control Relay (67518KTHM) involves weighing the benefits of availability, cost savings, and potential quality concerns against the peace of mind that comes with using an OEM part. If reliability and a warranty are important to you, an OEM part may be the better choice. However, if cost is a concern and you're willing to take the risk of dealing with a potentially lower-quality aftermarket part, you may choose to save money by purchasing an aftermarket relay.

Recommendation: Consider your budget, the importance of reliability and a warranty, and your comfort level with installing the part yourself before making a decision. If you prioritize peace of mind and reliability, opt for an OEM part from a Cadillac dealership. If you're on a budget and willing to take a risk, look for a good quality aftermarket part from a reputable supplier.

Details:

12 Month Warranty Fitment Notes: with bracket, Vehicle: 1976 Cadillac Eldorado. Parts Geek - For 1976-1979 Cadillac Eldorado A/C Control Relay SMP 67518KTHM 1972 1973 1977: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Standard Motor Products Notes: Compressor Mounting Hole Quantity: 3 Terminal 4 Contents: Bracket Included: Yes Features: Built Last: Our relays feature high-quality composite housings that protect against harsh temperatures and the most demanding under-hood conditions, ensuring lasting reliability. Renowned Global Manufacturer: As a global manufacturer of original equipment ignition Products, we maintain complete quality control throughout the manufacturing process from component to finished product. Enhanced Wear Resistance: Featuring brass or copper contacts where specified, our relays offer extended wear resistance, ensuring reliability even in high-stress applications.

Fitment Notes: Vehicle: Engine: 1979 Cadillac Eldorado GAS, 1977-1978 Eldorado.

part #: 67518kthm price

• $43.07

specifications cahecon:

• for models: Eldorado
• for makes: Cadillac
• for years: 1972-1979
• brand: Standard Motor Products
• mpn: 67518kthm
• part type: Control Motor
• manufacturer warranty: 12 Month Warranty
• notes: A/c Compressor Control Relay
• years: 1976 1972 1973 1977 1978 1974 1979
• application: Cadillac Eldorado A/c Control Relay
• cs-sku: 400

general cahecon:

• condition: New
• Car Truck Parts Accessories > Air Conditioning Heating > HVAC Controls Control Units

seller cahecon:

• # reviews: 328352
• city: Humarock, Massachusetts
• rating: 98.8%

offer cahecon:

• quantity: 1
• started: April 15, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

payments cahecon:

• other
• wallet: Paypal
• credit card: Diners-club

returns cahecon:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

shipping cahecon:

• type: Fixed
• transit: 2-6 Days
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• class: Standard
• cost: $0.00

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