GM GENUINE PARTS
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GM Genuine Parts D303A (19166099) Ignition Distributor Cap
GM Genuine Parts D303A (19166099) Ignition Distributor Cap
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GM Genuine Parts D303A (19166099) Ignition Distributor Cap
GM Genuine Parts D303A (19166099) Ignition Distributor Cap
GM-recommended replacement for your GM vehicle’s original factory component.
GM Genuine Parts D303A (19166099) Ignition Distributor Cap
Item #: 1990699

GM Genuine Parts D303A (19166099) Ignition Distributor Cap

89% of respondents would recommend this to a friend

Item #: 1990699

XCD 96

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*All items will import from US

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Only 12 items left in stock.
Order now and get it around Monday, September 21
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GM-recommended replacement for your GM vehicle’s original factory component.
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What Stands Out

Original Equipment Quality
Built to meet GM specifications, ensuring optimal performance and longevity in your vehicle's ignition system.
Easy Installation
Designed for straightforward installation, allowing vehicle owners to quickly replace and restore ignition functionality without professional assistance.
Durable Material
Constructed from high-quality materials that resist wear and withstand extreme conditions, ensuring reliable performance and extended lifespan compared to alternatives.

Product Details

Shop the best deals on ACDelco GM Original Equipment D303A Ignition Distributor Cap in Saint Lucia. Find the perfect replacement for your vehicle's ignition system at Ubuy Saint Lucia.
  • Designed with metal inserts to ensure maximum conductivity between distributor towers and spark plug wires
  • Equipped with easy-to-read locator keys for simple installation
  • Features a full anti-arc barrier to reduce the possibility of secondary voltage arcs
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Manufactured to provide the same performance, durability, and service life expected from General Motors
  • ACDelco offers high-quality switches, sensors, and relays to keep the engine running at optimal efficiency
Brand NameGM GENUINE PARTS
Model NumberD303A
Manufacturer Part Number19166099
Number of Items1
OEM Equivalent Part Number19166099
ManufacturerACDelco
UPC707773268452
Global Trade Identification Number40707773268450
Unit Count1 Count
ColorBlack
Exterior FinishMetal
Style NameSimple
Item Dimensions6.7 x 5.7 x 4.2 inches (17 x 14.5 x 10.7 cm)
Compatible with Vehicle TypeVehicle
Automotive Fit TypeVehicle Specific Fit
Closure TypeTwist-On
Material TypeMetal
BrandGM GENUINE PARTS
MaterialMetal
Item dimensions L x W x H6.7 x 5.7 x 4.2 inches (17 x 14.5 x 10.7 cm)

Who Should Buy?

Suitable For
  • General Motors Owners

    Ideal for owners of GM vehicles needing a reliable ignition distributor cap replacement for optimal performance.

  • DIY Mechanics

    Great choice for DIY enthusiasts looking to perform maintenance on their vehicle’s ignition system efficiently.

  • Performance Seekers

    Suitable for those wanting to enhance vehicle performance with dependable ignition components ensuring smooth engine operation.

Not Suitable For
  • Non-GM Vehicles

    Incompatible with vehicles that are not manufactured by GM, potentially leading to fitment and performance issues.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the function of the ACDelco GM Original Equipment D303A Ignition Distributor Cap?

    Answer: The ACDelco GM Original Equipment D303A Ignition Distributor Cap is crucial for the operation of the ignition system in your vehicle. It directs the high-voltage spark from the ignition coil to the appropriate cylinder, ensuring that the engine runs smoothly and efficiently. A well-functioning cap helps to prevent misfires and maintain optimal engine performance, making it essential for vehicles needing ignition system repairs or replacements.
  • Question: How do I know if my ignition distributor cap needs to be replaced?

    Answer: Signs that your ignition distributor cap may need replacing include engine misfires, difficulty starting the vehicle, or reduced fuel efficiency. Visually inspect for cracks, carbon buildup, or corrosion on the terminals. A failing cap can disrupt the ignition process and impact overall engine performance. It's advisable to check your distributor cap regularly, especially if experiencing any ignition-related issues, to maintain smooth vehicle operation.
  • Question: Is the ACDelco D303A distributor cap compatible with all vehicles?

    Answer: No, the ACDelco D303A distributor cap is specifically designed for certain GM models. To ensure compatibility, check your vehicle’s specifications or refer to the manufacturer’s guidelines. Using the correct part is important for effective ignition performance and to minimize potential engine problems. Always consult with an automotive professional if unsure about compatibility with your vehicle.
  • Question: Can I install the ACDelco GM D303A Ignition Distributor Cap myself?

    Answer: Yes, but installation requires basic mechanical skills. Ensure you have the right tools, like screwdrivers and pliers, for the job. Before installation, disconnect the battery to avoid electrical shock. Carefully remove the old cap, paying attention to the wiring, and install the new D303A cap following the reverse process. If you feel uncertain about the steps, it may be best to consult a professional for assistance.
  • Question: What material is the ACDelco D303A distributor cap made from?

    Answer: The ACDelco D303A Ignition Distributor Cap is typically made from high-quality plastic materials designed to withstand heat and resist moisture. Such durable construction ensures reliable performance and longevity under typical engine conditions. This resilience is essential, especially in environments that can cause wear and tear on vehicle components, helping to maintain optimal ignition function throughout your driving experience.
  • Question: What are the dimensions of the ACDelco GM D303A distributor cap?

    Answer: The ACDelco GM D303A distributor cap features specific dimensions tailored to fit designated vehicle models perfectly. While precise measurements can vary slightly among different manufacturers, generally, it is designed for optimum compatibility with listed GM vehicles. Always refer to the product specifications or the vehicle's repair manual for exact measurements to ensure a perfect fit and avoid installation issues.
  • Question: Does the ACDelco D303A distributor cap come with any accessories?

    Answer: The ACDelco D303A Ignition Distributor Cap typically does not come with additional accessories like ignition wires or distributor rotors. It is often sold separately, allowing you to choose compatible parts based on your specific needs. To achieve the best performance, consider replacing any worn-out components in your ignition system simultaneously, thereby ensuring seamless operation and improved reliability.
  • Question: How does the ACDelco GM D303A perform in different weather conditions?

    Answer: The ACDelco GM D303A distributor cap is designed to perform reliably across various weather conditions. Its robust construction helps prevent moisture accumulation, which can lead to malfunction. Additionally, resistance to heat and cold ensures stable ignition performance whether you're driving in rain, snow, or extreme temperatures. Proper installation and maintenance will optimize its functionality, helping you avoid performance issues regardless of the weather.
  • Question: Where can I buy ACDelco GM Original Equipment D303A Ignition Distributor Cap, Black in Saint Lucia?

    Answer: You can purchase the ACDelco GM Original Equipment D303A Ignition Distributor Cap, Black at Ubuy. They offer a variety of automotive parts and accessories, ensuring you find the right products for your vehicle needs. With excellent customer service and diverse options, Ubuy makes it convenient to obtain quality components like the D303A cap to keep your vehicle running smoothly.

GM GENUINE PARTS Distributor Caps D303A Editorial Review

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ACDelco GM Original Equipment D303A Ignition Distributor Cap is a popular choice among customers. It is designed to fit various Chevrolet models and is compatible with both 5.7 and 7.4-liter engines. The cap does not come with a rotor, so customers need to purchase it separately. Some customers have expressed dissatisfaction with the fit of the cap and rotor, with one reviewer even throwing it away and switching to a different brand. However, others have found the cap to be of good quality, with silver-colored contacts and no cheap metal like some aftermarket options.

Customer Reviews & Ratings

1039 customers ratings
  • 5 Star
    84%
  • 4 Star
    10%
  • 3 Star
    4%
  • 2 Star
    1%
  • 1 Star
    1%

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Pros

  • Compatible with various Chevrolet models and engine sizes
  • Good quality silver-colored contacts

Cons

  • Some customers have reported poor fit

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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“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
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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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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

XCD 96

Order now and get it around Monday, September 21

QTY:

Only 12 items left in stock.
Secured transactionsecured transaction

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Features & Benefits

  • ACDelco GM OE Distributor Cap is a GM-recommended replacement.
  • It provides half the rotary switch and has metal inserts designed to provide the best possible fit.
  • Easy-to-read locator keys make installation simple and an anti-arc barrier is provided.
  • It ensures maximum conductivity between distributor towers and spark plug wires.
  • The quality, reliability, and durability of GM OE.
  • Manufactured to fit your GM vehicle's original component and provide the same performance, durability, and service life.

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