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Genesis Coupe Spark plugs Install Guide

Why do it

Tools you'll need

• Spark plug socket
• Extensions
• Torque wrench
• Socket set
• Spark plug socket
• Extensions
• Torque wrench
• Socket set
• Intake manifold gaskets

Starting out? See our budget tool list.

Parts to buy

• Hyundai plug 18845-08201 (2012-2016 2.0T) The factory plug. You need 4.Fits 2012–2016 · 2.0T
• Hyundai plug 18846-11070 (3.8L) The factory plug. You need 6.Fits 2013–2016 · 3.8L V6

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Steps

1. Remove the cover

   • Take off the cover and coils.
   ▶ Watch this step (Fixin It, on a Genesis 2.0T) (0:30–2:48)

2. Remove the old plugs

   • Unscrew each plug.
   ▶ Watch this step (2:48–3:53)

3. Fit the new plugs

   • Thread them in and torque them.
   ▶ Watch this step (3:53–5:40)

4. Disconnect the engine

   • Take off the cover and battery terminal, then the wiring.
   ▶ Watch this step (The Brothers, on a 2013-2016 3.8L) (0:11–2:00)

5. Do the driver side

   • Swap the plugs on this side.
   ▶ Watch this step (2:00–5:21)

6. Remove the intake manifold

   • Take off the intake, throttle body and manifold.
   ▶ Watch this step (5:21–12:47)

7. Do the passenger side

   • Swap the plugs on this side.
   ▶ Watch this step (12:47–16:16)

8. Put it back

   • Refit the manifold, throttle body and intake.
   ▶ Watch this step (16:16–27:41)

How to know it worked

• The engine starts and idles smoothly.
• No warning lights.
• The engine starts and idles smoothly.
• No warning lights.

Follow your part's instructions and your service manual's torque specs.

Spark Plug install guides for other cars

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