What are the symptoms of a bad ignition coil?

A failing ignition coil can cause several symptoms, including the “Check Engine Light” appears, engine misfires, difficulty starting the vehicle, reduced fuel economy and loss of power during acceleration.

How often should spark plugs be replaced?

Spark plug replacement intervals depend on the type of spark plug and the vehicle’s engine. Refer to your vehicle’s Owner’s Manual for more information.

How can I tell if my distributor cap and rotor need replacing?

Distributor caps and rotors typically need replacement when you notice engine misfires, difficult vehicle startup, reduced engine performance, corrosion or carbon tracking on the cap, or cracks or wear on the rotor.

What is the difference between glow plugs and spark plugs?

Glow plugs are used in diesel engines to preheat the combustion chamber for a cold start. Spark plugs are used in gasoline engines to ignite the air and fuel mixture.

Does the "Service Engine Soon" light tell me when my vehicle needs a tune-up?

No. The "Service Engine Soon" light comes on when the vehicle’s computer detects a minor malfunction, an engine emissions issue or that routine maintenance is needed. For more information, refer to your vehicle owner's manual.

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ACDelco D303A GM Original Equipment Ignition Distributor Cap

ACDelco D303A GM Original Equipment Ignition Distributor Cap

Product ID: 421393772

Details

Brand
GM GENUINE
Colour
Black
Exterior Finish
Metal
Item dimensions L x W x H
17 x 14.5 x
Material
Metal

⚡Max conductivity metal inserts

🔧Easy-install locator keys

🛡️Anti-arc barrier for misfire protection

฿6433

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Description

⚡ Ignite your GM’s power with precision and reliability!

PRECISION METAL INSERTS - Ensures peak electrical conductivity for flawless ignition performance.
ADVANCED ANTI ARC BARRIER - Minimizes secondary voltage arcs to prevent engine misfires and boost reliability.
GM RECOMMENDED OEM QUALITY - Factory-grade replacement part engineered for your GM vehicle’s exact specs.
USER FRIENDLY LOCATOR KEYS - Simplifies installation with clear, easy-to-read alignment guides.
DURABILITY MEETS PERFORMANCE - Built to last with premium materials, backed by a 12-month/12,000-mile warranty.

The ACDelco D303A GM Original Equipment Ignition Distributor Cap is a vehicle-specific, factory-recommended replacement part designed to deliver optimal ignition performance. Featuring metal inserts for maximum conductivity, easy-install locator keys, and a full anti-arc barrier, it ensures reliable engine operation and longevity. Manufactured by GM Genuine Parts, it offers durability and a 12-month/12,000-mile warranty, making it the trusted choice for maintaining your GM vehicle’s original performance.

Specifications

ASIN	B000BYB1Y4
Automotive Fit Type	Vehicle Specific Fit
Brand Name	GM GENUINE PARTS
Closure Type	Twist-On
Colour	Black
Compatible with Vehicle Type	Vehicle
Customer Reviews	4.8 4.8 out of 5 stars (1,012)
Exterior Finish	Metal
Global Trade Identification Number	40707773268450
Item Dimensions	17 x 14.5 x 10.7 Centimeters
Manufacturer	GM GENUINE PARTS
Manufacturer Part Number	19166099
Manufacturer Warranty Description	12 Months / 12,000 Miles (Parts Only)
Material Type	Metal
Model	D303A
Number of Items	1
OEM Equivalent Part Number	19166099
Style Name	Modern
UPC	707773268452
Unit Count	1.0 Count

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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฿6433

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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