
71A7991 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $44.99 | Condition is New, Advance 71A7971 High Pressure Sodium 70W S62 Ballast Quad Tap 120/277V 71A7991, FREE SHIPPING | 99.9% |
![]() | $145.25 | Condition is New, PHILLIPS ADVANCE BALLAST 71A7991 BALLAST, shipping cost = $16.99 | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $34.99 | Condition is New – Open box, Advance 71A7991 Auto Transformer Ballast 70W S62 High Pressure Sodium Lamp, shipping cost = $3.00 | 99.1% |
![]() | $39.99 | Condition is New – Open box, Advance 71A7971 High Pressure Sodium 70W S62 Ballast Quad Tap 120/277V 71A7991, FREE SHIPPING | 99.9% |
![]() | $337.33 | Condition is New – Open box, Philips Advance 71A7991-500D Ballast Kit 71A7991500D, FREE SHIPPING | 99.9% |
![]() | $349.00 | Condition is New – Open box, Philips Advance 71A7991 Coil Ballast 1-1000 W, shipping cost = $31.36 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.99 | Condition is Used, Phillips Advance Transformer 71A7991, FREE SHIPPING | 99.4% |
![]() | $23.96 | Condition is Used, Phillips Advance Transformer 71A7991, FREE SHIPPING | 99.7% |
![]() | $23.97 | Condition is Used, ADVANCE TRANSFORMER CO 71A7991 HIGH PRESSURE SODIUM HID BALLAST 70W 120-277V, FREE SHIPPING | ![]() |
![]() | $24.99 | Condition is Used, Advance 71A7991 High Pressure Sodium 70-Watt Ballast Quad Tap 120-277V 70W S62, FREE SHIPPING | 99.9% |
![]() | $29.99 | Condition is Used, Advance Autotransformer Ballast 71A7991, FREE SHIPPING | 100.0% |
![]() | $17.00 | Condition is Used, Advance HX-HPF Autotransformer Ballast 71A7991 120/208/240/277V, shipping cost = $19.98 | 100.0% |
![]() | $24.00 | Condition is Used, Advance 71A7991 Ballast USIP, shipping cost = $22.55 | 99.8% |
![]() | $25.99 | Condition is Used, advance 71a7991 ballast, shipping cost = $25.10 | 99.9% |
![]() | $343.00 | Condition is Used, ADVANCE TRANSFORMER 71A7991 TRANSFORMER UNMP, FREE SHIPPING | 99.8% |

The Advance 71A7991 Ballast is a high-performance automotive ignition system component designed to deliver reliable and efficient spark generation in modern vehicles. It is engineered to provide superior ignition performance, enabling a smoother and more powerful engine operation.
This ballast is a part of the ignition system responsible for generating high voltage for the ignition coil. It utilizes the latest USIP ( Ultra-Static Ignition Power) technology to generate a consistent, strong, and stable electrical discharge. This results in quicker ignition of the fuel-air mixture in the engine cylinders, leading to improved combustion efficiency.
The Advance 71A7991 Ballast is built with a robust and durable design to ensure long-lasting performance. It features a high-quality aluminum housing that shields the internal components from heat and protects them from electrical interference. It also comes with a high-temperature, long-life diode that improves the overall efficiency of the ignition system.
This ballast is designed to be a direct replacement for OEM (Original Equipment Manufacturer) components. It comes pre-set and calibrated for specific vehicle applications, ensuring a simple and easy installation process. The plug-and-play design means that no additional tuning is required, making it a convenient and hassle-free solution for vehicle owners.
Furthermore, the Advance 71A7991 Ballast offers excellent compatibility and versatility. It is suitable for use in various vehicle types and applications, including cars, trucks, and SUVs. It also comes with a comprehensive warranty to provide peace of mind to the customer.
In summary, the Advance 71A7991 Ballast is a high-performance ignition system component designed to provide reliable and efficient spark generation in modern vehicles. It features advanced USIP technology, robust construction, easy installation, and excellent compatibility, making it an excellent choice for vehicle owners looking to improve their ignition system performance.
Pros and Cons of buying a 71A7991 Ballast from US Industries
1. Overview:The 71A7991 ballast from US Industries is a hydro Ballast designed for use in industrial and commercial applications. Here's a rundown of its main advantages and disadvantages.
Pros:1. Efficient: This ballast offers high efficiency, minimizing energy consumption and saving on utility bills. It utilizes advanced technology to effectively manage the flow of electrical current, resulting in optimal performance.
2. Reliable: The 71A7991 ballast is known for its durability and reliability. It's built to withstand harsh industrial environments and can last longer than many other ballasts on the market.
3. Compatibility: The ballast is compatible with a wide range of industrial and commercial lighting systems, including high-intensity discharge (HID) and fluorescent lamps.
4. Reduced maintenance: This ballast requires minimal maintenance, reducing downtime and labor costs.
5. Environmentally-friendly: The energy efficiency of the 71A7991 ballast helps to reduce greenhouse gas emissions, making it an environmentally-friendly choice.
Cons:1. Initial cost: The upfront cost of the 71A7991 ballast may be higher than some other options, but the energy savings over time will help offset this investment.
2. Complexity: This ballast may be more complex than some other options, requiring a higher level of expertise for installation and maintenance.
3. Size and Weight: The ballast is larger and heavier than some other types of ballasts, which can make installations and replacements more challenging.
4. Limited warranties: Some users have reported issues with the warranty coverage for the 71A7991 ballast, though this may vary depending on the specific situation.
Conclusion:In summary, the 71A7991 ballast from US Industries offers numerous advantages, including high efficiency, reliability, compatibility, reduced maintenance, and environmental friendliness. However, it also comes with some disadvantages like a higher initial cost, complexity, size and weight, and potential warranty issues. If the benefits outweigh the disadvantages for your specific application, then the 71A7991 ballast is a solid choice. Consider the unique needs of your industrial or commercial lighting system when making your decision.
Recommendation:Based on the information presented, if you're in need of a robust and efficient ballast for industrial or commercial lighting, the 71A7991 ballast from US Industries could be an excellent option. Weigh the pros and cons carefully, keeping in mind the specific requirements of your project, and consult a professional electrician if necessary for installation and maintenance.
Details:
Manufacturer part number: 71A7991. 2-year MRI shield protection plan included. Advance 71A7991 ballast manufactured by Advance.
A previously used, fully functional product that may have some signs of cosmetic wear. The product must be the original item shipped, with matching serial numbers if applicable. Most items are in stock when they listed. Special instructions.
Advance 71A7991 ballast, 7 FD 300 vac, 50/60 Hz.
specifications faclighting:
- brand: Advance
- mpn: 71a7991
- part type: Ballast
offer faclighting:
- prices: $17.00–$349.00
- item condition:
- New
- New – Open box
- Used
- options: ship-to-home
- in stock #: 5
- started: january 29, 2025
- availability: in stock
- sold #: 22
- best offers: true
shipping faclighting:
- service: ups ground, ups next day air, usps priority mail, usps priority mail express
- carrier: ups, usps
- class: standard, one-day, expedited
- transit: 2-6 days
- type: calculated
payments faclighting:
- other
- wallet: paypal
- credit card: mastercard
general faclighting:
- category: Business & Industrial > Maintenance Safety > Facility > Lights Lighting
seller faclighting:
- # reviews: 12625
- rating: 97.3%
- city: san antonio, texas
returns faclighting:
- paid by: buyer
- policy: returns accepted
- time: 30 days
- method: money back
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