UNIVERSAL AIR CONDITIONER BM4320 Uac Hvac Blower Motor 711307035267

( Brand: Universal Air Conditioner ), ( Manufacturer Part Number: BM4320 ), ( Part Type: Hvac Blower Motor ), ( Product Type: A/c Heating ), ( UPC: 711307035267 ), ( Fitment Type: Vehicle Specific ), ( Partslink Number: 2614500d, 446991c1, 6675509, C7az19805b, 80130185, Abpn83301162 ), ( Compatible Make S : Chevrolet, Gmc ), ( Compatible Model S : G10, G30, G20, G10 Van, G20 Van, G30 Van, G35, G15, G25 ), ( Product Subtype: Blower Motors ), ( Department: Replacement )

Review UNIVERSAL AIR CONDITIONER Chevy Uac Hvac Blower Motor fits G10 1975–1976

The **BM4320 Air Conditioning Blower Motor** is a meticulously engineered, high-performance replacement component designed specifically for the **1975 1976 Chevrolet G10 (Nova)**, ensuring seamless integration into the vehicle s **UAC HVAC system**. Engineered to meet the exact specifications of the original equipment manufacturer (OEM), this blower motor delivers reliable, consistent airflow while maintaining the classic driving experience of these iconic mid-sized sedans. Crafted from durable materials, the BM4320 features a robust **permanent magnet DC motor**, delivering smooth, quiet operation across multiple speed settings typically offering three distinct fan speeds (low, medium, and high) to accommodate varying climate control needs. Its **precision-engineered brushless design** minimizes wear and tear, reducing the risk of electrical shorts or motor failure over time, making it a long-lasting solution for enthusiasts and restorers alike. The motor is compatible with the **G10 s original wiring harness and resistor assembly**, ensuring a plug-and-play installation with minimal modifications required. Whether restoring a vintage Nova to its former glory or upgrading an existing HVAC system for improved efficiency, this blower motor guarantees **consistent airflow, reduced strain on the electrical system, and a seamless blend of performance and reliability**. Built to withstand the demands of daily driving while preserving the authenticity of the original vehicle, the **BM4320 is an essential upgrade for any owner seeking both functionality and historical accuracy** in their Chevrolet G10.

Buying a **BM4320 blower motor** for a **1975-1976 Chevrolet G10** (or similar UAC HVAC systems) can be a practical solution for repairing or upgrading your vehicle s heating and air conditioning system. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a BM4320 Blower Motor**

1. **Direct Compatibility** The BM4320 is a well-documented, widely available blower motor designed specifically for UAC HVAC systems, which were standard in many GM vehicles from the mid-1970s, including the G10. This ensures a plug-and-play installation with minimal modifications.

2. **Reliability** As a factory or aftermarket part, the BM4320 is built to last, especially if sourced from a reputable manufacturer. Many users report long-term performance without frequent failures, provided it is installed and maintained correctly.

3. **Ease of Installation** Since it is a direct replacement, swapping out the old blower motor typically requires only basic tools (screwdriver, wire connectors, and possibly a new fuse if the wiring is damaged). No major wiring harness or ductwork changes are usually needed.

4. **Cost-Effective Repair** Replacing a faulty blower motor is often cheaper than overhauling the entire HVAC system. A new BM4320 can cost between **$30 and $80**, depending on the brand and retailer, whereas labor costs for professional installation may range from **$50 to $150** depending on location.

5. **Improved Airflow** If the original motor was failing or running inefficiently, a new BM4320 will restore proper airflow, ensuring the heater and A/C function correctly. This can significantly improve passenger comfort, especially in extreme temperatures.

6. **Aftermarket Support** The BM4320 is a common part, so finding replacement motors, wiring diagrams, or troubleshooting guides is straightforward. Many classic car forums and repair manuals (e.g., Haynes, Chilton) provide detailed instructions for installation.

7. **Compatibility with Upgrades** If you re also upgrading other components (e.g., a new A/C compressor, improved dash controls, or a high-output blower motor), the BM4320 serves as a solid foundation for those modifications.

8. **Prevents Further Damage** A failing blower motor can cause undue strain on the HVAC system, potentially damaging the compressor or other components. Replacing it early can prevent costly repairs down the line.

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### **Cons of buying a BM4320 Blower Motor**

1. **Limited Speed Settings** The stock BM4320 typically has **three or four speed settings**, which may feel outdated compared to modern HVAC systems with variable-speed controls. If you prefer adjustable airflow, you might need to pair it with a **resistor pack upgrade** or a **solid-state blower control module**.

2. **Potential Wiring Issues** Older vehicles like the G10 may have worn or corroded wiring in the blower motor circuit. If the harness is damaged, you ll need to repair or replace it, which adds to the labor cost. Always inspect the wiring and connectors during installation.

3. **Noise Concerns** Some users report that the BM4320 can be **loud when running at high speeds**, especially if the motor bearings wear out over time. This is more common with higher-mileage motors, so opting for a new or reconditioned unit can mitigate this issue.

4. **Limited Availability of Upgrades** While the BM4320 itself is easy to find, upgrading to a **high-output blower motor** (e.g., a **BM4320 with a stronger motor** or a **BM4320E**) may require additional research. Some aftermarket motors (e.g., **Delco or GM Performance Parts**) offer better airflow but may not be a direct drop-in replacement.

5. **Compatibility with Aftermarket Controls** If you re using **aftermarket dash gauges or HVAC controls**, you may need to ensure the wiring matches the BM4320 s pinout. Some custom setups require additional wiring harnesses or relays.

6. **Potential for Counterfeit Parts** As with any aftermarket part, there is a risk of purchasing a **fake or low-quality BM4320**, especially from unverified online sellers. Always buy from reputable sources (e.g., **RockAuto, eBay (verified sellers), or specialty classic car parts dealers**) to avoid issues.

7. **No Built-In Diagnostics** Unlike modern vehicles, the G10 s HVAC system lacks onboard diagnostics. If the motor fails intermittently, troubleshooting may require checking fuses, relays, and ground connections manually.

8. **Limited Longevity with Poor Maintenance** While the BM4320 is durable, neglecting maintenance (e.g., not cleaning the motor or replacing the resistor pack when needed) can shorten its lifespan. Regular inspections are recommended.

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### **Conclusion**

The **BM4320 blower motor** is a **practical and cost-effective solution** for restoring proper airflow in a **1975-1976 Chevrolet G10** with a UAC HVAC system. Its **direct compatibility, reliability, and ease of installation** make it a strong choice for most DIYers and mechanics. However, potential drawbacks such as **limited speed control options, wiring concerns, and noise issues** should be considered, especially if you plan to modify the system further.

If your primary goal is **basic functionality and reliability**, the BM4320 is an excellent choice. If you want **better airflow control or modern performance**, you may need to pair it with **aftermarket upgrades** (e.g., a **high-output motor, resistor pack, or solid-state control module**).

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### **Recommendation**

1. **Buy from a Reputable Source** Purchase the **BM4320 from RockAuto, eBay (verified seller), or a classic car parts dealer** to ensure authenticity and quality. Avoid no-name brands that may fail prematurely.

2. **Inspect the Wiring** Before installation, check the **blower motor relay, fuse, and wiring harness** for damage. Replace any corroded or broken wires to prevent future issues.

- A **BM4320E** (higher output version).

- A **Delco or GM Performance Parts blower motor** (if compatible).

- A **solid-state blower control module** for smoother speed adjustments.

4. **Test Before Finalizing** If possible, **test the motor before installing it permanently** to ensure it runs smoothly at all speeds.

5. **Maintain Regularly** Clean the motor and resistor pack periodically to prevent dust buildup, which can cause overheating or failure.

6. **Document the Process** If you re unsure about wiring or installation, refer to a **Haynes or Chilton manual** or consult a classic car forum (e.g., **Chevy10.org, ClassicChevy.com**) for step-by-step guidance.

**Final Verdict:** The **BM4320 is the best choice for a straightforward, reliable replacement** for your G10 s blower motor. With proper installation and maintenance, it will serve you well for years. If you plan to enhance the HVAC system further, research compatible upgrades to maximize performance.

Details:

Provides long lasting service life. HVAC Blower Motor BM4320 by UAC. UAC products are made of durable materials which guarantee their reliable performance and excellent durability. These products deliver a superior combination of perfect fit, high efficiency, and long lasting service life.

Guarantees high efficiency. Uac line of electrical systems will fit most applications at an affordable price. Uac line of electrical components includes the blower motors that are necessary for proper function an A/C System. Vented Y/ N: Y.

Connector Type: 4 lead wires w/ connector. Specifications: Connector Terminal Qty: 4. Rotation: Rev. They are produced at top tier facilities with strong quality control procedures so that UAC is able to offer you a product will truly last.

Motor Diameter mm: 76. Ensures reliable performance. Features: Helps maintain a desired temperature inside your car. The products by Universal Air Conditioner provide comfortable driving for you and your passengers all year round maintaining the desired temperature inside cabin of car, truck or SUV.

Flanges Y/ N: N.

part #: bm4320 prices

• $83.82-$100.95

specifications chvyblowermotor:

• for makes: Chevy
• for years: 1975-1976
• brand: Universal Air Conditioner
• mpn: Bm4320
• part type: Hvac Blower Motor
• product type: A/c Heating
• upc: 711307035267
• fitment type: Vehicle Specific
• partslink number: 2614500d, 446991c1, 6675509, C7az19805b, 80130185, Abpn83301162
• compatible make s : Chevrolet, Gmc
• compatible model s : G10, G30, G20, G10 Van, G20 Van, G30 Van, G35, G15, G25
• product subtype: Blower Motors
• department: Replacement

general chvyblowermotor:

• Air Conditioning Heating > Blowers Fans > HVAC Blower Motors Wheels
• condition: New

shipping chvyblowermotor:

• carrier: FedEx
• transit: 2-6 Days
• type: Calculated
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $22.82

seller chvyblowermotor:

• city: Saddle Brook, New Jersey
• rating: 99.1%
• # reviews: 156087

payments chvyblowermotor:

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

returns chvyblowermotor:

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

offer chvyblowermotor:

• started: April 23, 2026
• availability: In Stock
• sold: 0
• quantity: 5
• options: Ship-to-home

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