Iridium Platinum Spark Plug, IFR6T11, for Toyota RAV4, Lexus GS & ES

Iridium Platinum Spark Plug, IFR6T11, for Toyota RAV4, Lexus GS & ES

This is an iridium platinum spark plug, part number IFR6T11, built for the Toyota RAV4, Lexus GS, and Lexus ES. If your engine has developed a rough idle, hesitation on acceleration, or reduced fuel economy, worn spark plugs are one of the most common and most affordable things to check first.

Why Iridium Platinum Construction Matters in a Spark Plug

A standard copper spark plug's electrode wears down relatively quickly under the heat and electrical erosion of normal combustion, which is why manufacturers started building plugs with iridium and platinum tips instead. These harder, more heat-resistant metals hold a finer electrode tip for far longer than copper can, which is why an iridium platinum plug like this one is designed to maintain a strong, consistent spark over a much longer service interval than a basic plug would.

Key Features

• Iridium fire nozzle electrode for long-lasting, consistent spark performance
• Built to factory specification for gap, thread size, and reach
• Part number IFR6T11 for straightforward cross-reference to your original plug
• Direct-fit replacement designed to restore factory ignition performance

Specifications

• Type: Automobile spark plug
• Electrode material: Iridium fire nozzle
• Part number: IFR6T11
• Bore size, gap, thread size, and reach: Standard factory specification
• Condition: New

Compatibility

Built for the Toyota RAV4, Lexus GS, and Lexus ES. Because spark plug specifications can vary between engine variants and production years even within the same model line, it's worth confirming part number IFR6T11 against your original plug or your vehicle's documentation before ordering, or reaching out with your VIN for help confirming fitment.

Signs You Need New Spark Plugs

A rough or uneven idle, hesitation or a slight stumble under acceleration, reduced fuel economy, or a harder-than-normal start are all common signs that your spark plugs are due for replacement. Because plugs wear gradually rather than failing all at once, many drivers don't notice how much smoother their engine runs until after a fresh set is installed. A quick visual inspection of the old plug when it comes out, checking for excessive electrode wear, deposits, or an incorrect gap, can also help confirm that the plug was in fact the source of the symptoms you were noticing.

Why Replacing Worn Plugs on Schedule Matters

Running an engine on worn spark plugs means each cylinder is firing less efficiently, which wastes fuel and can eventually lead to misfires that put extra strain on the ignition coils and catalytic converter. Replacing plugs before they're fully worn out, rather than waiting for a misfire to show up, is a simple way to protect the more expensive components downstream in the ignition and emissions systems.

Installation Notes

Installing this plug means removing the ignition coil or spark plug wire, extracting the old plug with a spark plug socket, and threading the new plug in by hand before tightening it to the manufacturer's specified torque. Because over-tightening a spark plug can crack the insulator or damage the cylinder head threads, using a torque wrench rather than tightening by feel is worth the extra step. It's also worth replacing all of the engine's spark plugs at the same time rather than just the one that's showing symptoms, since the remaining original plugs are typically at a similar point in their service life and tend to follow shortly after.

Ordering Information

This spark plug is in stock and ships ready to install. Our Shipping Information page covers current timelines, and our Warranty and Returns pages explain what to do if anything isn't right on arrival. Not sure this matches your specific vehicle and engine variant? Our Request a Part page is the fastest way to confirm before you order.

Related Parts

This spark plug is listed in our Toyota and Lexus collections, along with our Engine Parts collection, where you'll find other ignition components.