Is there a recommended interval for changing my vehicle’s spark plugs?

Yes, the interval depends on each vehicle model’s specifications. Refer to your vehicle Owner’s Manual for guidance on when you should change your vehicle’s spark plugs.

Should I change all of my vehicle’s spark plugs at the same time?

Yes, when it is time for a scheduled spark plug replacement, all spark plugs should be changed. If a single spark plug is fouled or damaged outside of scheduled maintenance, finding the source of the damage and changing it is recommended.

Can I just clean my spark plugs instead of replacing them?

No, ACDelco does not recommend cleaning old spark plugs. Cleaning spark plugs does not repair broken components, chipped insulator tips, and worn electrodes and wires.

What is pre-ignition and can it damage my engine?

Yes, pre-ignition can cause serious damage to an engine. Pre-ignition, often accompanied by engine knocking sounds, air and fuel ignite in the engine before the spark plug fires. The condition commonly occurs when old spark plugs are worn or dirty.

Does a diesel engine require a different type of plug than a gas engine?

Yes, diesel engines require glow plugs instead of spark plugs. To learn what type of glow plugs or spark plugs your vehicle requires, refer to your vehicle Owner’s Manual for guidance.

Acdelco Gold 21 19323046 Rapidfire Spark Plug

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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KD 2.97

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Description

⚡ Ignite your drive with precision and power!

DURABILITY ENGINEERED - Pure copper core maximizes heat transfer, enhancing plug longevity under high combustion pressures.
OPTIMIZED SEAL DESIGN - Ribless insulator improves plug-to-boot seal, preventing misfires and ensuring peak engine efficiency.
INTERFERENCE FREE DRIVE - Solid state suppressor with glass and brass seal minimizes radio frequency interference for smooth operation.
PRECISION SPARK CONTROL - Regulates spark energy for longer electrode life and consistent ignition performance.
UNIVERSAL FIT OEM QUALITY - Manufactured to exact GM specs, fitting most makes and models with professional-grade reliability.

The ACDelco Gold 21 RAPIDFIRE Spark Plug is a premium aftermarket replacement designed to meet or exceed OEM standards. Featuring a pure copper core for superior heat transfer, a platinum center electrode for efficient spark delivery, and a solid state suppressor to reduce radio frequency interference, it ensures reliable ignition and extended electrode life. Engineered for universal fit across many vehicles, it delivers professional-grade performance and durability backed by General Motors.

Specifications

ASIN	B010GNHYHM
Automotive Fit Type	Universal Fit
Best Sellers Rank	#196,255 in Automotive ( See Top 100 in Automotive ) #1,255 in Automotive Replacement Spark Plugs
Brand	ACDelco
Brand Name	ACDelco
Compatible with Vehicle Type	UTV
Core Material	Copper
Customer Reviews	4.5 out of 5 stars 123 Reviews
Manufacturer	ACDelco
Manufacturer Part Number	19323046
Manufacturer Warranty Description	3 Year / Unlimited Mile Limited Warranty (Parts Only). Please see ACDelco.com for more details.
Model Number	21
OEM Equivalent Part Number	19323046
Thread Size	14mm
Top Material Type	Nickel
UPC	808709306566
Unit Count	1.0 Count
Vehicle Service Type	UTV

Reviews

D**.

Great product

price, quality, work great on my Toyota Sienna

6.08.2025

J**A

Did the trick

It was time for a tune up. They work great

21.04.2025

J**T

Used on BMW

I saw a YouTube video where a mechanic used these instead of the German plugs 10 times more expensive. These work great so far. Car running well.

11.12.2023

K**R

worked fine got here fast

27.04.2025

D**M

Spark

Works great has the car running soooo good

26.07.2020

C**N

Great product, works well

29.02.2020

A**A

Just installed but works great so far

Works in my car so good

17.01.2019

F**K

Perfect product

Truck running like new again thank you

15.06.2017

S**L

Arrived on time but quality issues are there

One of the spark plugs had parts scattered in the box. Other was fine.

16.10.2022

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

KD 2.97

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered 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 KUWAIT.

Secure transaction

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2 weeks ago

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ACDelco Gold 21 (19323046) RAPIDFIRE Spark Plug

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Common Questions