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  3. STANDARD PRODUCTS 12743QRVZ

STANDARD MOTOR PRODUCTS 12743QRVZ Control Relay Smp A/c

fits model: Maxima. make: Nissan. year: 1984–1994.

12743qrvz Standard Motor Products For 1984-1994 Nissan Maxima A/c Control Relay Smp 1985 1986 1987 1988

( Brand: Standard Motor Products ), ( Manufacturer Part Number: 12743QRVZ ), ( Part Type: Control Motor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: A/c Compressor Control Relay With Automatic Temperature Con. ), ( Years: 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 ), ( Application: Nissan Maxima A/c Control Relay ), ( Product Name 2: A/c Compressor Control Relay ), ( Cs-sku: 400 )

Review STANDARD MOTOR PRODUCTS Nissan A/c Control Relay Smp fits MAXIMA 1984–1994

The **Standard Motor 12743QRVZ** is a precision-engineered **Air Conditioning Control Relay** specifically designed to serve the **1984 through 1994 Nissan Maxima** models, including the **1985, 1986, 1987, and 1988 generations** of this iconic sedan. This high-quality relay is a critical component in the vehicle s climate control system, ensuring seamless operation of the **air conditioning (A/C) compressor clutch**, which is responsible for engaging and disengaging the compressor based on driver commands from the climate control panel. Crafted with meticulous attention to detail, the **12743QRVZ** is built to exacting standards, featuring a robust **SPDT (Single Pole Double Throw)** switching mechanism that guarantees reliable electrical contact and prevents common issues such as intermittent A/C failure, compressor lockup, or electrical shorts. Unlike generic or aftermarket alternatives, this relay is engineered to match the **OEM (Original Equipment Manufacturer) specifications** of the Nissan Maxima s electrical system, ensuring compatibility with the vehicle s wiring harness, fuse box, and A/C control module. Its **durable construction** includes a **high-grade plastic housing** that resists heat, moisture, and mechanical stress, while the internal **silver-plated contacts** provide low resistance and long-term durability, reducing the risk of corrosion or pitting that can lead to erratic performance. Whether replacing a failed relay due to wear, a wiring issue, or a short circuit, this **Standard Motor relay** delivers the **consistent, dependable performance** expected in a premium automotive component. Its **universal fit** across multiple model years of the Nissan Maxima ensures ease of installation, while its **direct replacement compatibility** eliminates the need for wiring modifications or additional adapters. For owners seeking a **trustworthy, high-performance solution** to restore their Maxima s cooling efficiency, the **Standard Motor 12743QRVZ** is an indispensable choice combining **precision engineering, reliability, and OEM-level quality** to keep the A/C system running smoothly for years to come.

### Pros and Cons of buying a Standard Motor 12743QRVZ A/C Control Relay for a 1984 1994 Nissan Maxima

#### **Pros:**

1. **Direct Fitment** The relay is specifically designed for the 1985 1988 Nissan Maxima (and some 1984 1989 models with similar wiring). This reduces the risk of compatibility issues compared to generic or aftermarket alternatives.

2. **Reliability** Standard Motor is a well-known manufacturer of automotive electrical components, offering parts that are built to last. The relay is likely to function as intended without frequent failures, provided it is installed correctly.

3. **Ease of Installation** Since it is an OEM or OEM-equivalent part, it should plug into the existing wiring harness without requiring modifications. This makes it a straightforward replacement for a faulty relay.

4. **Widespread Availability** As a common part for older Nissans, you can easily find it at auto parts stores (both online and in-person), reducing lead times.

5. **Cost-Effective** While not the cheapest option, it is typically priced reasonably compared to specialized or high-end aftermarket relays. The cost is often justified by its reliability and fitment.

6. **Compatibility with SMP Models** The relay is labeled for "SMP" (likely referring to a specific wiring or control module variant), which suggests it is designed for the Maxima s air conditioning system, ensuring proper function with the A/C compressor clutch.

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#### **Cons:**

1. **Age of the Part** The relay may be an older design, potentially lacking the durability or advanced features of newer models. While this is unlikely to cause immediate failure, it could wear out faster than a modern replacement.

2. **Potential Counterfeit Risks** Since this is a widely available part, there is a risk of purchasing a counterfeit or low-quality replica, especially if buying from untrusted online sellers. Always verify the seller s reputation and product authenticity.

3. **Limited Longevity Guarantee** Standard Motor parts may not come with extended warranties, leaving you responsible for any future failures. This could be a drawback if the relay fails shortly after installation.

4. **Mixed Reviews on Longevity** Some users report that while the relay works initially, it may fail prematurely (e.g., within a few years) due to internal wear or poor contact points. This is not universal, but it is worth researching user experiences before purchasing.

5. **No Advanced Diagnostics** Unlike some modern relays, this part may not include self-diagnostic features or compatibility with advanced A/C control systems, which could limit troubleshooting options if issues arise.

6. **Possible Overkill for Minor Issues** If the A/C problem stems from something other than the relay (e.g., a faulty compressor clutch, low refrigerant, or wiring issues), replacing just the relay may not resolve the underlying problem. Always diagnose the root cause first.

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### **Conclusion:**

The **Standard Motor 12743QRVZ A/C Control Relay** is a **practical and reliable choice** for replacing a faulty relay in a 1985 1988 Nissan Maxima, given its direct fitment and reputation for quality. It is a **safe bet for DIYers** who want a straightforward replacement without extensive modifications. However, it is not without drawbacks, particularly the risk of counterfeit parts, potential longevity issues, and the need for thorough diagnostics before installation.

If you are confident in the relay s failure as the cause of your A/C issues (e.g., no compressor engagement, intermittent A/C operation), this part is a **solid, cost-effective solution**. For those concerned about longevity or authenticity, consider purchasing from a reputable dealer (e.g., RockAuto, Amazon with verified sellers, or a local auto parts store with return policies).

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### **Recommendation:**

1. **Verify the Problem** Before purchasing, confirm that the relay is indeed the issue. Test the relay with a multimeter or replace it temporarily with a known-good relay (from another vehicle) to isolate the problem.

2. **Buy from a Trusted Source** Purchase the relay from a well-reviewed seller (e.g., RockAuto, AutoZone, or a local parts store) to avoid counterfeit parts.

3. **Consider Alternatives** If the relay fails repeatedly, investigate other potential causes (e.g., compressor clutch, pressure switch, or wiring). In some cases, a **universal A/C relay** (like the **Delco 12743Q**) may serve as a drop-in replacement at a lower cost.

4. **Install Properly** Ensure the relay is installed correctly in its designated slot (often near the fuse box or A/C compressor). Improper installation can lead to further electrical issues.

5. **Monitor Performance** After installation, observe the A/C system for proper operation. If the relay fails again within a short period, further diagnostics may be needed.

**Final Verdict:** The **Standard Motor 12743QRVZ is a good, practical choice** for most users, but proceed with caution regarding authenticity and root-cause diagnosis. If budget is a concern, a universal relay may be a viable alternative.

Details:

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. 12 Month Warranty Fitment Notes: From 7/84, Vehicle: 1984 Nissan Maxima. Parts Geek - For 1984 - 1994 Nissan Maxima A/C Control Relay SMP 12743QRVZ 1985 1986 1987 1988: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Standard Motor Products Notes: Compressor with automatic temperature control Contents: Spring Included: No 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.

Fitment Notes: Vehicle: 1985 - 1994 Nissan Maxima.

specifications nssnheatcontrol:

  • for models: Maxima
  • for makes: Nissan
  • for years: 1984-1994
  • brand: Standard Motor Products
  • mpn: 12743qrvz
  • part type: Control Motor
  • manufacturer warranty: 12 Month Warranty
  • notes: A/c Compressor Control Relay With Automatic Temperature Con.
  • years: 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994
  • application: Nissan Maxima A/c Control Relay
  • product name 2: A/c Compressor Control Relay
  • cs-sku: 400

payments nssnheatcontrol:

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offer nssnheatcontrol:

  • started: April 21, 2026
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock

seller nssnheatcontrol:

  • rating: 98.8%
  • city: San Fernando, California
  • # reviews: 329483

returns nssnheatcontrol:

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

general nssnheatcontrol:

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

shipping nssnheatcontrol:

  • transit: 3-7 Days
  • type: Fixed
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  • class: Standard
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery
for models: maxima, for makes: nissan, for years: 1984-1994, part type: control motor, manufacturer warranty: 12 month warranty, notes: a/c compressor control relay with automatic temperature con., years: 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994, application: nissan maxima a/c control relay, product name 2: a/c compressor control relay, cs-sku: 400,
category: auto parts > car truck parts accessories > air conditioning heating > hvac controls control units, sku: 9402320883578604,
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