How to check and replace spark plugs for the Honda Ridgeline?

Spark plugs are in the center of each cylinder head. To replace, you need a spark plug socket, extensions, a feeler gauge, and a torque wrench. Buy the correct plugs, check the gaps, and replace one at a time. Let the engine cool before removing plugs. Inspect new plugs for defects and check gaps. Remove engine and ignition coil covers. Disconnect the ignition coils and remove the spark plug. Apply anti-seize compound to the plug threads, avoiding the electrodes. Install the new plug, then attach the coil. Repeat for all plugs.

Genuine Honda Ridgeline Spark Plug

Ignition Spark Plug

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3 Spark Plugs found

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Honda Ridgeline Spark Plug (Ilzkr7B11) (Ngk)
Part Number: 12290-R70-A01
- Other Name: Spark Plug
$22.57 MSRP: $31.88
You Save: $9.31 (30%)

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Fits the following Vehicles:
2009-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door Sport | KA 5AT
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Honda Ridgeline Spark Plug Dilzkr
Part Number: 12290-R9P-A01
- Other Name: Spark Plug
$38.81 MSRP: $55.28
You Save: $16.47 (30%)

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Fits the following Vehicles:
2017-2021 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD) | KA 6AT, KA 9AT
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Honda Ridgeline Spark Plug (Izfr5K11) (Ngk)
Part Number: 9807B-5517W
- Other Name: Spark Plug
$19.75 MSRP: $27.90
You Save: $8.15 (30%)

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Fits the following Vehicles:
2006-2008 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX | KA 5AT
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Honda Ridgeline Spark Plug Parts Questions & Answers

Spark Plug (Ilzkr7B11) (Ngk)
12290-R70-A01
Q: How to check and replace spark plugs for the Honda Ridgeline?
A: Spark plugs are in the center of each cylinder head. To replace, you need a spark plug socket, extensions, a feeler gauge, and a torque wrench. Buy the correct plugs, check the gaps, and replace one at a time. Let the engine cool before removing plugs. Inspect new plugs for defects and check gaps. Remove engine and ignition coil covers. Disconnect the ignition coils and remove the spark plug. Apply anti-seize compound to the plug threads, avoiding the electrodes. Install the new plug, then attach the coil. Repeat for all plugs.