2022 Toyota RAV4 — Spark Plug Type, Gap & Torque

Quick reference

Note: ACDelco does not catalog a dedicated equivalent for this Toyota application. When in doubt, use the Toyota OEM part or the NGK/Denso equivalents listed.

Why the right plug matters

• Heat range: The 2.5L Dynamic Force engines (A25A series) rely on the specified heat range to keep the tip hot enough to self-clean without running so hot that it causes pre-ignition. Using the correct heat range (as in the OEM plug above) preserves performance and deters knock and fouling.
• Electrode material: Your 2022 RAV4 ships with long-life laser iridium plugs. Iridium fine-wire centers need less voltage to fire, resist wear, and support long change intervals. Platinum offers good life at a lower cost but typically at half the service interval. Copper/nickel cores conduct well but wear fastest and are not recommended for these engines.
• Dimensions: Thread size, reach, seat type, and projected tip geometry are engineered for the A25A combustion chambers. A mismatch can cause piston contact, poor flame propagation, or damaged threads.

How to gap a spark plug

Iridium plugs for the RAV4 are factory gapped and should rarely need adjustment. Still, always verify:

1. Use a wire-style round gauge, not a wedge/coin tool, to measure.
2. Spec is 0.043 in / 1.1 mm. A slight variation within manufacturer tolerance is acceptable.
3. If adjustment is required, bend only the ground strap with a light touch. Do not pry on or strike the fine iridium center electrode.
4. Re-check after adjustment at multiple points on the ground strap to verify a parallel, even gap.

Replacement procedure tips (2022 RAV4)

This RAV4 uses coil-on-plug (COP) ignition—one coil per cylinder, no distributor.

• Preparation

  • Work on a cold engine. Remove the plastic engine cover to access the coils.
  • For Hybrid/Prime models, switch the car fully OFF and disconnect the negative 12V battery cable to prevent the engine from starting unexpectedly. You do not need to touch any orange high-voltage cables for spark plug service.
  • Blow out the plug wells with compressed air before removing plugs to keep debris out of the cylinders.

• Coil removal

  • Unplug each coil connector by lifting the tab; avoid pulling on the wires.
  • Remove the coil hold-down bolt and gently twist/pull the coil up. Inspect boots for oil or carbon tracking.

• Plug removal and installation

  • Use a 14 mm spark plug socket with extension. Break each plug free smoothly. If resistance feels abnormal, pause and re-apply light torque while adding penetrant to the well; allow time to wick.
  • Confirm the new plug’s part number and gap. These plugs have a crush washer (gasket seat).
  • Thread new plugs in by hand with a long extension to avoid cross-threading the aluminum head. Once seated, torque to 13 lb-ft (18 Nm). Do not overtighten.
  • Anti-seize: NGK and Denso advise against anti-seize on their nickel-plated threads. If you choose to use it, reduce torque by ~20%, but the best practice here is no anti-seize and proper torque.
  • Apply a small dab of dielectric grease inside each coil boot to ease future removal and help prevent moisture intrusion. Reinstall coils and connectors; ensure each clicks into place.

• Final checks

  • Refit the engine cover, reconnect the 12V battery (hybrids), and start the engine. Verify smooth idle and no misfire codes.

Known issues

• Ford 3-valve 5.4L 2-piece spark plugs that seize and break, and GM ion-sensing coil concerns, do not apply to the 2022 RAV4.
• The A25A aluminum cylinder head uses fine M12 threads and deep plug wells—cross-threading and debris intrusion are the main risks. Always start plugs by hand and clean wells before removal/installation.
• On high-mileage or off-road vehicles, dust can accumulate in the wells; compressed air and a clean socket help avoid grit on threads.

Service interval guidance

• Iridium (OEM): up to 120,000 miles (192,000 km) under normal conditions.
• Platinum: typically ~60,000 miles (96,000 km).
• Copper/nickel: ~30,000 miles (48,000 km). Not recommended for this engine.

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