2005–2015 Toyota Tacoma
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Denso K20HR-U11 Spark Plugs (set of 6, 4.0L V6) | K20HR-U11 | $45.00 | |
| NGK ILFR6T11 Iridium Spark Plugs (set of 4, 2.7L 4-cyl) | ILFR6T11 | $32.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Let the engine cool completely, plugs come out of an aluminum head and a hot head strips threads. Disconnect the negative battery cable with a 10mm wrench.
On the 4.0L V6, remove the engine cover to expose the six coil packs, three per side. The 2.7L 4-cylinder has four coil packs on top of the valve cover.
Squeeze each coil pack electrical connector tab and pull the connector off. Remove the 10mm coil pack bolt and pull the coil pack straight up out of the well. Set coils aside in order.
The driver-side bank is tighter. Loosen the air intake hose clamp and unbolt the intake stiffener bracket (12mm) so you can reach the front coil pack. Carefully work each coil connector off, the front driver-side connector is the stubborn one, nudge it with a flathead while compressing the clip.
Before removing plugs, blow compressed air or use a shop vacuum around each plug well. Grit falling into an open cylinder scores the bore.
Use a 5/8 inch spark plug socket with 3 and 6 inch extensions and a 3/8 inch ratchet to remove each plug. Note plug condition, oily threads on the rear driver-side plug are a known Tacoma quirk and worth noting.
Gap new plugs to 0.039-0.043 inch (1.0-1.1 mm) for the 4.0L V6, or 0.044 inch for the 2.7L 4-cylinder iridium plugs. Pre-gapped plugs still get checked with a feeler gauge.
Hand-thread each plug in at least three full turns before touching a wrench to avoid cross-threading. If you use anti-seize, reduce torque by about one third per Denso guidance. Torque to 15 ft-lbs (20 Nm) on the 4.0L V6.
Push coil packs back into the wells, torque coil bolts to 7.4 ft-lbs (10 Nm), and reconnect every electrical connector until it clicks. Refit the intake stiffener bracket, air intake hose, and engine cover.
Reconnect the negative battery cable, start the engine, and listen for a smooth idle. Take a short test drive and confirm no check engine light or misfire. Recheck that every connector seated fully.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
2005–2015
2005–2015
2005–2015
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1995–2004
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