Ignitions and Electrical› Ignition Components

Denso

SPARK PLUG

$34.50

SKU: D00A 3403

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Denso 3403 is an Iridium Long Life spark plug. It features a 0.7mm iridium fine wire center electrode and a platinum ground electrode for enhanced durability and performance. This spark plug has a 14mm thread size, 19mm reach, and a gasket seat. It is designed to endure high temperatures and provide sustained performance over 100,000 miles.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDenso
Part NumberD00A 3403

Buy with Confidence

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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