UAC KT-3951 Air Conditioner Compressor Kit 711307379170 A/c

( Brand: Uac ), ( Manufacturer Part Number: KT-3951 ), ( Part Type: Compressor ), ( UPC: 711307379170 ), ( Gtin: 00711307379170 )

Review UAC Universal Air Conditioner Kt 3951 A/c Compressor And Component Kit

The **UAC KT-3951 Air Conditioner Compressor Kit** is a high-performance, precision-engineered replacement solution designed specifically for vehicles equipped with the original KT-3951 air conditioning compressor, ensuring optimal cooling efficiency and longevity. This meticulously crafted kit is engineered to meet or exceed OEM standards, delivering reliable performance under demanding conditions while maintaining compatibility with a wide range of automotive HVAC systems. The compressor features a robust **rotary-type design**, incorporating a durable **ball-bearing system** for smooth operation and reduced friction, which translates to quieter performance and extended component life. Constructed from high-grade materials, including **heat-treated steel and corrosion-resistant alloys**, this kit is built to withstand the thermal and mechanical stresses of continuous use, making it an ideal choice for both original equipment and aftermarket applications.

At the heart of the KT-3951 kit is a **sealed refrigerant circuit** that ensures efficient heat exchange, allowing the compressor to handle high-pressure refrigerant cycles with ease. The integrated **pulse-width modulation (PWM) control** capability enables seamless integration with modern vehicle climate control systems, providing precise temperature regulation and adaptive performance based on driver settings. Additionally, the kit includes a **high-capacity oil reservoir** and a **self-lubricating seal system**, which minimizes wear and prevents refrigerant leaks critical factors for maintaining system integrity over time. For added convenience and reliability, the compressor is paired with a **direct-fit pulley and mounting hardware**, ensuring a secure and straightforward installation process that minimizes the risk of misalignment or improper fitment.

Whether used in sedans, SUVs, or light-duty trucks, the UAC KT-3951 compressor kit is engineered to restore or enhance the cooling performance of aging or damaged HVAC systems. Its **universal compatibility** makes it a versatile upgrade for vehicles where the original compressor may have failed due to wear, refrigerant contamination, or electrical issues. By incorporating advanced engineering with practical durability, this kit not only extends the lifespan of the air conditioning system but also contributes to improved fuel efficiency and passenger comfort. For professionals and DIY enthusiasts alike, the KT-3951 represents a dependable, high-quality solution for maintaining peak performance in automotive climate control systems.

**Pros and Cons of buying a UAC KT-3951 Air Conditioner Compressor Kit**

The UAC KT-3951 is a compressor kit designed for use in automotive air conditioning systems, particularly those compatible with R-134a refrigerant. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Compatibility with Common Systems** The KT-3951 is designed to fit many standard automotive A/C systems, including those in older vehicles that may have worn-out or failed compressors. It is often used as a direct replacement for OEM compressors in cars like the Ford Taurus, Mercury Sable, and other models with similar A/C setups.

2. **Cost-Effective Repair Option** Replacing just the compressor rather than the entire A/C system can be significantly cheaper than buying a new unit. The KT-3951 is a budget-friendly alternative to OEM parts, making it appealing for DIY mechanics or those on a tight budget.

3. **Easy Installation** The kit typically includes all necessary components (compressor, clutch, pulley, and sometimes a new A/C condenser if purchased as a full system). Many users report that installation is straightforward, especially if they have basic mechanical experience.

4. **Aftermarket Reliability** While not as premium as OEM parts, UAC (Universal Air Conditioning) is a well-known brand in the aftermarket industry. Their compressors are generally durable and built to last, provided they are installed and maintained properly.

5. **Widely Available** Since it is a popular aftermarket part, the KT-3951 is easy to find in auto parts stores, online marketplaces, and specialty A/C repair shops. This makes sourcing replacement parts convenient.

6. **Works with R-134a Refrigerant** The compressor is designed to function with R-134a, the most common refrigerant in older vehicles. This eliminates the need for costly refrigerant upgrades if the system is already using R-134a.

7. **Potential for Long-Term Use** If properly maintained (regular refrigerant checks, oil changes, and system flushes), the KT-3951 can provide years of reliable service, especially in vehicles that are not driven excessively.

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### **Cons**

1. **Quality Variability** Like many aftermarket parts, the KT-3951 may not match the exact build quality of an OEM compressor. Some users report issues with leaks, premature wear, or failure to engage properly if the clutch or pulley is not installed correctly.

2. **Potential for Incompatibility** While the KT-3951 is designed for a wide range of vehicles, there is always a risk of misfit, especially in non-standard or modified A/C systems. Always verify compatibility with your specific vehicle s make, model, and year before purchasing.

3. **Requires Professional or Skilled DIY Installation** Improper installation can lead to further damage to the A/C system, including refrigerant leaks, clutch failure, or even compressor seizure. If the installer lacks experience, the repair may end up costing more in the long run.

4. **May Not Include All Necessary Components** Some kits may only include the compressor itself, while others bundle it with a clutch, pulley, or even a condenser. Buyers must ensure they purchase the complete kit or additional parts separately, which can add to the cost.

5. **Limited Warranty** UAC typically offers a limited warranty (often 1-2 years), which may not cover all potential issues, especially if installation was improper. OEM parts usually come with longer warranties.

6. **Risk of Contamination** If the A/C system has not been properly flushed before installation, old refrigerant, oil, or debris can contaminate the new compressor, leading to premature failure. A system flush is often recommended before fitting a new compressor.

7. **Performance May Not Match OEM** Some users notice that aftermarket compressors, even high-quality ones like the KT-3951, may not cool as efficiently as an OEM part. This could be due to slight differences in design or manufacturing tolerances.

8. **Potential for Counterfeit Parts** Since aftermarket parts are widely available, there is a risk of purchasing counterfeit or low-quality knockoffs, especially when buying from untrusted sellers. Always purchase from reputable dealers to avoid this issue.

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### **Conclusion**

The **UAC KT-3951 compressor kit** is a practical and cost-effective solution for replacing a failing automotive A/C compressor in many standard vehicles. It offers a balance between affordability and functionality, making it a popular choice for DIY enthusiasts and mechanics working on budget repairs. However, its effectiveness depends heavily on proper installation, system maintenance, and compatibility with the vehicle s A/C setup.

- **Verify compatibility** with their specific vehicle before purchasing.

- **Ensure proper installation**, ideally by a professional or someone with A/C repair experience.

- **Flush the system** before installing the new compressor to prevent contamination.

- **Use high-quality refrigerant and oil** (PAG oil for R-134a systems).

- **Consider purchasing a full system** (compressor clutch pulley condenser) if available, to avoid additional costs.

If the vehicle is older or has a complex A/C system, some users may find that investing in an **OEM or high-end aftermarket compressor** (such as those from Mann, Delphi, or Denso) provides better long-term reliability. However, for most standard applications, the **KT-3951 remains a solid, budget-friendly option** when used correctly.

### **Final Recommendation**

- You are working on a **budget** and need a direct replacement for a failed compressor.

- Your vehicle is a **common model** (e.g., Ford Taurus, Mercury Sable, or similar) known to use this compressor type.

- You are **confident in your mechanical skills** or have access to professional help for installation.

- You plan to **maintain the system properly** (regular refrigerant checks, oil changes, and system flushes).

- Your vehicle has a **non-standard or modified A/C system** that may not be fully compatible.

- You lack **mechanical experience** and cannot ensure proper installation.

- You are willing to **spend more** for potentially longer-lasting OEM or premium aftermarket parts.

- The compressor is **not the only issue** (e.g., leaks, faulty condenser, or electrical problems) that would require additional repairs.

For most casual DIYers and those repairing older vehicles, the **KT-3951 is a reasonable choice**, but due diligence in preparation and installation is essential for success.

Details:

Model: KT 3951. Is Discontinued By Manufacturer: No. Universal Air Conditioner KT 3951 A/C Compressor and Component Kit: Manufacturer: UAC. Product Dimensions: 43 x 10 28 inches.

Item model number: KT 3951. Brand New, OE replacement: UAC branded Compressor Kit.

part #: kt3951 prices

• $340.58-$366.95

specifications motohva:

• brand: Uac
• mpn: Kt-3951
• part type: Compressor
• upc: 711307379170
• gtin: 00711307379170

general motohva:

• HVAC Refrigeration > HVAC Refrigeration Components > Compressors
• condition: New

payments motohva:

• wallet: Apple-pay
• credit card: Diners-club
• other

returns motohva:

• policy: No Returns

shipping motohva:

• service: Standard
• cost: $0.00
• transit: 3-9 Days
• type: Fixed
• class: Standard

offer motohva:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: March 3, 2026

seller motohva:

• city: US
• # reviews: 587
• rating: 100.0%

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