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How Many Spark Plugs in a V8

February 12, 2024 | Victor Lukasso

If your car is running on a V8 engine (8- cylinder engine), it’s necessary to know how many spark plugs are in a v8 automobile engine in case of maintenance or repairs.

Over the years, Auto manufacturers have tried to adjust the layout, capabilities, and design of all engine models, and as such different cylinder comes with other specifications and performance.

A spark plug is responsible for creating a spark in the engine during combustion, without a functional spark plug; internal combustion will not be successful or take longer, which means the engine will likely not crank.

A V8 engine, just as the name implies, comes with eight (8) Spark plugs with a one-spark plug to one-cylinder formation. Each cylinder has one Spark plug attached to it.


This is different for the v4, v6, V12, and v16 engines because of their configuration differences. In this article, I’ll answer the “How many spark plugs are in a v8” question, further explaining how spark plugs work.

How Many Spark Plugs Are in a v8 Automobile Engine

Due to the improvements implemented by car manufacturers on engines, engine designs come equipped with varying numbers of spark plugs. So, if you ask, “How many Spark plugs are in a V8 automobile engine,” the short answer is eight.

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The function of spark plugs in internal combustion engines is to generate electricity from the ignition system. In turn, it sends it to the combustion chamber, which ignites the compressed air-fuel mixture to cause motion. The Spark plug ignites the air-fuel mixture in the eight cylinders before sending it to the crankshaft.

A spark from the plugs is necessary to power a car’s engine because the movement of the wheel depends on the current passed from the flywheel to the engine crankshaft.

This further implies each cylinder on a v8 engine is equipped with a spark plug, piston, injector, and multiple valves depending on the type of cylinder installed.

However, some car manufacturers install a technology called the dual ignition design which allows two spark plugs to be placed on a cylinder.

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This will help improve horsepower and reduce emissions. You can decipher a dual ignition cylinder by counting the number of spark plug wires on it.

Although, the Hemi v8 engines have two spark plugs on one cylinder making the total number of Spark plugs on a Hemi V8 engine sixteen (16). One plug wire joins two spark plugs on a cylinder, making this possible.

So, irrespective of your car model, you should consider the layout, design, and type of cylinder mounted on your car before you can tell how many spark plugs are installed.

How much for a V8 Engine?

If you’d like to initiate a V8 engine rebuild or replacement and you’re a bit confused about the price, here’s a breakdown.

Prices often differ depending on your car’s quality and model (a luxury V8 on a Ford Vehicle costs up to $40k).

A v8 engine rebuild costs between $3,500 to $7,000; meanwhile, a new V8 Engine costs between $7,000 and $40,000, depending on the vehicle.


Why does V8 have 16 spark plugs?

Most V8 has 8 Spark plugs on them. Still, most car manufacturers who adopted the dual ignition technology allow two spark plugs on a single cylinder, multiplying the number of spark plugs by 16 (8×2).

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This is done to improve the car’s horsepower and also reduce emissions.

How much are spark plugs for a V8?

Depending on the Spark plug manufacturer, the price ranges from $30 to $100 in a set of 4, 8, or 16.

Does a v6 engine have eight spark plugs?

A v6 engine never had eight spark plugs. It comes with six spark plugs, while dual or twin cylinders come with 12 spark plugs Due to the ability of two Spark plugs to be installed on a single cylinder.

How many spark plugs does a 5.7 L V8 have?

5.7 L V8 engines have two Spark plugs installed on one cylinder making the total number of Spark plugs on a Hemi V8 engine sixteen (16). One plug wire joins two spark plugs on a cylinder making this possible.

How many spark plugs does a V12 have?

A standard V12 has 12 spark plugs installed; meanwhile, dual ignition designs have 24 spark plugs installed (12 x 2).

Do all v8 engines have 16 spark plugs?

No, most v8 engines come equipped with 8 Spark plugs.

ALSO, READ > How Many Crankshafts Are In a V8 Automobile Engine

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Meet Victor Lukasso, the owner of V. Auto Basics. Through this blog, Victor Provides Insights on the latest tips, maintenance, repair, and techniques in the automotive world.