2019 Tesla Model S Spark Plug Type & Gap Specs

As an ASE-certified master technician, I get asked all sorts of questions about vehicle maintenance, specifications, and tuning. But every now and then, a question comes across the bay that makes me smile. If you are looking for the spark plug specifications, gap settings, and torque requirements for a 2019 Tesla Model S, you are in for a very pleasant surprise.

Unlike traditional gas-powered cars, the 2019 Tesla Model S is a Battery Electric Vehicle (BEV). It does not have an internal combustion engine (ICE). Therefore, the 2019 Tesla Model S does not have spark plugs, ignition coils, spark plug wires, or a distributor.

However, because automotive knowledge is power, let's break down exactly what this means for your maintenance schedule, and look at the standard spark plug concepts you would need to know if you also own a gas-powered vehicle.

Quick reference

Here is the quick reference guide for the 2019 Tesla Model S powertrain:

Since the Model S uses a lithium-ion battery pack and alternating current (AC) induction or permanent magnet electric motors to generate propulsion, there is no fuel to ignite. The inverter takes the DC current from the battery, converts it to AC, and creates a rotating magnetic field in the motor. No spark required!

Why the right plug matters (For Gas Vehicles)

If you own an internal combustion engine vehicle alongside your Tesla Model S, choosing the right spark plug is critical. In a gas engine, the spark plug ignites the air-fuel mixture.

• Heat Range: Plugs must dissipate heat efficiently. If a plug is too hot, it can cause pre-ignition (engine knock). If it's too cold, it will foul with carbon deposits.
• Electrode Metal: Copper conducts best but wears out in 30,000 miles. Platinum lasts up to 60,000 miles. Iridium is incredibly hard and handles the extreme demands of modern high-compression engines, often lasting 100,000 miles or more.

Thankfully, your Model S completely bypasses the need to worry about heat ranges or electrode wear!

How to gap a spark plug

If you were working on a standard gas engine, gapping a spark plug is the process of setting the exact distance between the center and ground electrodes. This determines the size of the electrical arc.

1. Use a gauge tool: A wire-type feeler gauge is best, especially for brittle iridium tips.
2. Light bend: You gently bend the ground strap (never prying against the center electrode) until the gauge passes through with a slight drag.

For the 2019 Tesla Model S, the only "gap" you need to worry about is the panel gap on the body panels—something best left to the auto body shop!

Replacement procedure tips

There is no coil-on-plug removal, no anti-seize debate, and no dielectric grease needed for boots on a 2019 Tesla Model S.

Your maintenance procedure for the Model S propulsion system essentially boils down to:

• Keeping the battery charged.
• Checking the battery coolant levels (usually done by Tesla service).
• Topping off windshield washer fluid.
• Replacing the cabin air filter every 2 years.
• Rotating the tires and checking brake fluid. (Thanks to regenerative braking, even your brake pads will last significantly longer than on a gas car).

Known issues

In the combustion world, there are famous spark plug nightmares. For example, the Ford 3-valve 5.4L engines are notorious for their 2-piece spark plugs breaking off in the cylinder head, requiring special extraction tools. GM 5.3L engines utilize ionization-sensing coils that can misbehave if you use the wrong aftermarket plug.

Your 2019 Tesla Model S suffers from none of these traditional engine issues. There is no porcelain to crack, no plug shells to seize in an aluminum cylinder head, and no ignition coils to burn out. Your primary concerns are keeping the vehicle's software updated and ensuring your home charging equipment is in good condition.

Need plugs replaced on your other car? Find a shop on Repairius.