Ignitions and Electrical› Ignition Components

E3 SPARK PLUGS

SPARK PLUG AUTOMOTIVE

$16.70

SKU: E02M E3.46_SUS

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In Stock
Ships by Aug 9
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

SPARK PLUG AUTOMOTIVE

MIA's Description

The E3.46 Automotive Spark Plug is a 14mm, 0.750” reach plug with a gasket seat. It features a DiamondFIRE electrode secured by three legs for excellent heat transfer and increased turbulence. This design is proven to increase power, reduce fuel consumption, and improve hydrocarbon emissions.

The plug offers optimal performance with a unique ground electrode and a full-size center electrode, guaranteed for five years or 100,000 miles. It is designed to fit a wide variety of applications from the 1960s to the early 1990s, particularly import vehicles.

Fitment

Fitment Guaranteed

Don’t gamble
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

BrandE3 SPARK PLUGS
Part NumberE02M E3.46_SUS

Videos

Difference Between An E3 Diamond Fire Spark Plug and a Conventional Spark Plug

Difference Between An E3 Diamond Fire Spark Plug and a Conventional Spark Plug
E3 spark plug will damage your car!

E3 spark plug will damage your car!
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Best Spark Plugs for Performance!
Do Spark Plugs Matter? CHEAP vs EXPENSIVE | Engine Masters | MotorTrend

Do Spark Plugs Matter? CHEAP vs EXPENSIVE | Engine Masters | MotorTrend
Best Spark Plugs For Gas Mileage Reviews 2026 [Top 5 Picks]

Best Spark Plugs For Gas Mileage Reviews 2026 [Top 5 Picks]
Comparing spark quality on Autolite XP vs. E3 spark plug.

Comparing spark quality on Autolite XP vs. E3 spark plug.
Cooper vs iridium spark plug @elchanojose

Cooper vs iridium spark plug @elchanojose
Part 2: NGK spark plugs vs E3 diamond fire in an JDM H22A Honda Civic Si

Part 2: NGK spark plugs vs E3 diamond fire in an JDM H22A Honda Civic Si
Autolite - Spark Plug Electrodes And Gapping

Autolite - Spark Plug Electrodes And Gapping
Best Spark Plug Wires - Top 5 Spark Plug Wires of 2025

Best Spark Plug Wires - Top 5 Spark Plug Wires of 2025

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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