Spark plug replacement Guide2012 Honda Odyssey
Complete DIY repair guide with step-by-step instructions. Find exact parts on Amazon for your vehicle.
Difficulty
Intermediate (front bank) / Advanced (rear bank)
Time
1-3 hours
Parts Needed
1 items
DIY Savings
$100-400+
2012 Honda Odyssey — What You Need to Know
- →Rear 3 spark plugs on V6 Odyssey require moving the intake manifold — budget 2-3 hours for full 6-plug replacement
- →Front 3 plugs (cylinders 2, 4, 6) take about 20 minutes. Rear 3 (cylinders 1, 3, 5) take 1.5-2 hours additional
- →Use NGK IZFR6K11S iridium plugs — OEM spec. Do not substitute copper plugs
- →Many shops charge $300-500 for this job due to the intake manifold work — it is DIY-able but plan for a half-day
Torque Specs
Spark plugs: 13 ft-lbs | Intake manifold bolts: 17 ft-lbs | Coil bolts: 9 ft-lbs
Safety Warnings
- •Rear 3 spark plugs (cylinders 1, 3, 5) require removing the intake manifold for proper access
- •Do NOT attempt to reach rear plugs from underneath — very high risk of breaking the plug off in the head
Tools Required
5/8" spark plug socket
3" and 6" extensions
Universal joint
10mm socket (coil bolts)
Intake manifold socket set (if removing rear bank cover)
Parts Needed
Spark Plugs (set of 6)Iridium/platinum, pre-gapped — do not adjust
Shop on AmazonOEM 12290-R70-A01NGK IZFR6K11S (NGK 4994) / Denso SK20HR11
Basic Procedure Overview
- 1Front 3 plugs (cylinders 2, 4, 6) — accessible from front: remove coil (10mm), remove plug
- 2Rear 3 plugs — loosen intake manifold 8 bolts (10mm), move manifold forward 2-3 inches (do not fully remove, hoses can stay connected)
- 3With manifold moved, access rear plugs with extension and universal joint
- 4Torque all plugs to 13 ft-lbs, reinstall coils with dielectric grease on boots
- 5Torque intake manifold bolts in a cross pattern to 17 ft-lbs
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