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Item #:
13211355
ACDelco Professional U505 (12337166) Ignition Coil
88% of respondents would recommend this to a friend
Item #:
13211355
TTD 444
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Order now and get it around Wednesday, October 07
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An ACDelco Professional Ignition Coil provides high quality coated windings and silicone steel plates to improve durability, performance and dependability.
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What Stands Out
High Performance
Engineered for superior ignition efficiency, ACDelco’s Professional U505 coil enhances engine performance, ensuring reliable starts and robust acceleration, outpacing many competitors in power delivery and reliability.
Durable Construction
Built with high-quality materials, the U505 coil withstands harsh engine conditions, providing long-lasting durability that minimizes replacements, ensuring dependable ignition over an extended lifespan for vehicle owners.
Easy Installation
Designed for straightforward installation, the ACDelco U505 coil fits a wide range of vehicles, allowing DIY enthusiasts and professionals alike to save time and effort while enhancing vehicle performance.
Product Details
- High quality coated windings improve durability and protect against internal shorts and dielectric breakdown
- Silicone steel plates match original part size and number exactly
- Laminations are coated to hinder corrosion and many feature molded plastic protection
- Professional, premium aftermarket replacement
- Increases electrical system voltage to help ignite air/fuel mixture
- Manufactured to meet expectations for fit, form, and function
| Brand Name | ACDelco |
| Unit Count | 1 Count |
| Manufacturer | ACDelco |
| UPC | 036666253719 |
| Number of Items | 1 |
| Global Trade Identification Number | 00036666253719 |
| Included Components | ACDelco - Ignition Coil (B) (U505) |
| Item Type Name | ACDelco - Ignition Coil (B) (U505) |
| Model Number | U505 |
| Manufacturer Part Number | 12337166 |
| Compatible with Vehicle Type | Car |
| Part Interchange Info | U505 |
| Connector Gender | Male |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Equivalent Part Number | 12337166 |
| Item Dimensions | 6.8 x 3.3 x 3.4 inches (17.3 x 8.4 x 8.6 cm) |
| Item Weight | 0.61 kg |
| Installation Type | Bolt-On |
| Brand | ACDelco |
| Item dimensions L x W x H | 6.8 x 3.3 x 3.4 inches (17.3 x 8.4 x 8.6 cm) |
| Vehicle Service Type | Car |
Who Should Buy?
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Vehicle Owners
Ideal for vehicle owners needing reliable ignition coils for optimal engine performance and fuel efficiency.
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DIY Mechanics
A good choice for DIY mechanics looking for an affordable and quality replacement ignition coil.
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Older Models
Perfect for older model cars requiring replacement ignition coils to maintain engine performance and reliability.
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High-Performance Vehicles
Not suitable for high-performance vehicles requiring specialized ignition coils for modified engines.
Product Description
ACDelco Professional U505 (12337166) Ignition Coil
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Customer Questions & Answers
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Question:
What does the ACDelco Professional U505 Ignition Coil do?
Answer: The ACDelco Professional U505 Ignition Coil is a crucial component that transforms low battery voltage into the high voltage needed to ignite the fuel-air mixture in your engine. Its primary function is to ensure consistent and reliable engine performance. By providing the necessary spark, it helps improve fuel efficiency and reduce exhaust emissions. This means that if your vehicle experiences misfires, rough idling, or decreased power, the U505 coil might be the key to restoring optimal operation. -
Question:
What vehicles are compatible with the ACDelco Professional U505 Ignition Coil?
Answer: The ACDelco Professional U505 Ignition Coil is designed to fit a wide range of vehicles, especially those manufactured by General Motors. It's important to check compatibility with specific models, such as Chevrolet, Buick, GMC, and Cadillac vehicles from various engine configurations. Proper fitment ensures that the ignition coil effectively delivers the spark needed for optimal combustion, making your vehicle run smoothly and efficiently without misfires. -
Question:
How can I tell if my ignition coil is faulty?
Answer: Symptoms of a faulty ignition coil can include engine misfires, poor acceleration, or illuminated dashboard warning lights. Drivers may also notice unusual engine noises or difficulty starting the vehicle. If your vehicle demonstrates intermittent performance issues, it could be due to an unreliable spark from a failing ignition coil. Regularly checking your vehicle’s ignition system can help prevent these problems and maintain smooth operation. -
Question:
What is the installation process for the ACDelco Professional U505 Ignition Coil?
Answer: Installing the ACDelco Professional U505 Ignition Coil typically requires basic tools and some mechanical know-how. First, ensure the ignition is off and disconnect the battery. Then, locate the old ignition coil, detach any connectors, and remove it from its mount. Install the new coil in reverse order, ensuring secure connections to prevent misfires. It's advisable to refer to your vehicle's service manual for specific instructions, ensuring the installation is correct for optimal performance. -
Question:
How does the ACDelco Professional U505 compare to other ignition coils?
Answer: The ACDelco Professional U505 Ignition Coil stands out due to its high-quality construction and reliability. Unlike some generic brands that may provide inconsistent performance, ACDelco coils are manufactured to original equipment specifications, ensuring they deliver the right voltage for your engine. This reliability not only enhances engine performance but also extends the lifespan of related components, inviting a smoother driving experience compared to lesser quality options. -
Question:
What maintenance does the ACDelco Professional U505 Ignition Coil require?
Answer: The ACDelco Professional U505 Ignition Coil requires minimal maintenance as it is designed for durability. However, it's beneficial to regularly inspect surrounding components for wear and tear, as issues with spark plugs or wiring can influence coil performance. Keeping the engine clean and maintaining the ignition system helps in ensuring that the coil operates effectively, which ultimately supports fuel efficiency and engine responsiveness over time. -
Question:
Can a bad ignition coil affect fuel economy?
Answer: Yes, a faulty ignition coil can significantly impact fuel economy. When the ignition coil is not functioning properly, it may not supply sufficient voltage to the spark plugs, leading to incomplete combustion. This inefficiency often results in increased fuel consumption as the engine struggles to maintain performance. By replacing a faulty ignition coil with the ACDelco Professional U505, you can enhance fuel efficiency and restore optimal engine operation. -
Question:
Is the ACDelco Professional U505 Ignition Coil suitable for high-performance engines?
Answer: The ACDelco Professional U505 Ignition Coil is well-suited for many performance applications due to its robust construction and ability to deliver reliable, high voltage output. In high-performance engines, where responsiveness and reliability are critical, having a quality ignition coil like the U505 ensures that the engine remains efficient, delivering performance without sacrificing reliability. It's an excellent choice for upgrades and replacements alike. -
Question:
What are the signs that I should replace my ignition coil?
Answer: If you're experiencing engine misfires, poor acceleration, or a rough idle, these could be signs that it's time to replace your ignition coil. You might also notice decreased power during acceleration or an illuminated check engine light. If these symptoms occur, it’s advisable to inspect the ignition system to determine if the ACDelco Professional U505 Ignition Coil is needed, helping to restore proper engine performance and efficiency. -
Question:
Where can I buy ACDelco Professional U505 Ignition Coil in Trinidad and Tobago?
Answer: You can buy the ACDelco Professional U505 Ignition Coil from Ubuy in Trinidad and Tobago. Ubuy offers a seamless shopping experience with a wide variety of automotive parts, ensuring you find the right components for your vehicle. With reliable service and quick access to quality products like the U505 ignition coil, Ubuy makes it easy to keep your vehicle running smoothly.
ACDelco Coils U505 Editorial Review
ACDelco Professional U505 (12337166) Ignition Coil offers a reliable replacement for various classic car models, providing a powerful spark and excellent performance. Users have reported improved engine performance after installation, with one customer noting that their Corvette now has a hotter spark and smoother operation. This ignition coil is designed specifically for vehicle-specific fits, ensuring compatibility with models like the 68 GMC and 72 Chevrolet Impala. The easy installation process is another highlight, as it typically requires just a bolt-on fix. Whether you're revamping a vintage ride or maintaining an older model, this ignition coil meets OEM specifications for quality and reliability.
Customer Reviews & Ratings
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Pros
- Easy bolt-on installation process
- Compatible with classic car models
- Provides strong engine performance
- Designed for specific vehicle fits
- Improves ignition system efficiency
Cons
- Some users note larger studs than original parts
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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TTD 444
Order now and get it around Wednesday, October 07
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Features & Benefits
- ACDelco Professional Ignition Coil is a high quality replacement part
- Made of pure copper windings and silicone steel plates that match the original part size and number
- Coated to hinder corrosion and encourage durability
- Provides better performance and resistance to internal shorts, dielectric breakdown, and other potential electrical damage.
- Premium aftermarket replacement manufactured to meet your expectations for fit, form, and function
- Suitable for vehicle-specific fitting
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