Ignitions and Electrical› Ignition Components

Lexus

Iridium Long-Life Spark Plug

$18.81

SKU: 3473

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In Stock
Ships by Aug 4
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INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The DENSO 3473 Iridium Long-Life Spark Plug is meticulously crafted to meet stringent OE performance standards for a range of Lexus vehicles, including the GS, IS, LS, and RC series. Replacing old spark plugs with the DENSO 3473 can help ensure your vehicle runs smoothly and can resolve issues such as misfiring or poor acceleration. The materials used, including nickel and platinum, contribute to its longevity. The DENSO 3473 spark plug offers OE-level performance and is designed for straightforward installation, making it suitable for both DIY enthusiasts and professional mechanics. This spark plug is specifically designed to fit numerous Lexus models from 2006 to 2017, including the GS300, IS250, IS350, GS350, GS450h, LS460, GS460, IS F, LS600h, RC350, IS300, and RC300. The recommended gap for these applications is 0.044 inches. It is important to note that this spark plug must be purchased in increments of four. The DENSO 3473 is also interchangeable with Toyota part number 90919-01249 and Denso part number FK20HBR11.

MIA's Description

The DENSO 3473 is an Iridium Long-Life spark plug designed to meet OE performance standards for various Lexus models. It boosts combustion efficiency, improving engine performance and fuel economy. This spark plug features an Iridium center electrode and a platinum needle ground tip for a stable spark, and is compatible with Toyota part number 90919-01249.

Fitment

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Specifications

BrandLexus
Part Number3473
CategoryIgnitions and Electrical

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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