E3 Spark Plugs

2011–2016 Scion tC (tC2)

Part #: E3.68

Overview

The E3 Spark Plugs (Box of 4) are engineered specifically for the 2011 to 2016 Scion tC (tC2) models, delivering reliable ignition performance and enhanced engine efficiency. Designed to replace your factory spark plugs with a direct fitment, these plugs utilize advanced technology to improve combustion, resulting in better fuel economy, reduced emissions, and consistent power delivery. Ideal for enthusiasts and daily drivers alike, E3 spark plugs offer a long-lasting solution that supports your vehicle’s performance over time.

Each box contains four spark plugs, providing a complete set for your vehicle’s four-cylinder engine. The E3.68 model features a 14mm thread diameter with a 1.000” reach and a gasket seat, ensuring a secure and precise fit for your Scion tC.

Key Features

These spark plugs incorporate innovative design elements that set them apart from standard plugs:

• Patented DiamondFIRE side wire electrode for superior ignition and combustion efficiency
• Three-leg design securing the electrode to the shell for excellent heat transfer and durability
• Fixed gap design optimized for consistent spark performance without the need for adjustment
• Resistor built-in to reduce electrical noise and protect vehicle electronics
• 14mm thread diameter with 1.000” reach and gasket seat for precise fitment
• Durable construction designed to last up to five years or 100,000 miles under normal use
• Improves fuel economy and reduces hydrocarbon emissions over long-term use
• Compatible with a wide range of late-model vehicles, including Hemi applications

Construction & Design

The E3.68 spark plugs feature a robust construction with a full-size center electrode and a unique ground electrode design. The three-legged DiamondFIRE electrode is engineered to maximize heat transfer from the electrode to the shell, which helps maintain optimal operating temperatures and reduces fouling. This design also creates increased turbulence in the combustion chamber, promoting more complete fuel burn and improved engine efficiency.

Manufactured with high-quality materials, these plugs are built to withstand the rigors of daily driving and performance demands. The fixed gap ensures consistent spark delivery without the need for adjustment, simplifying installation and maintenance.

Installation & Fitment

Installation of the E3 Spark Plugs is straightforward and requires no modifications to your Scion tC’s engine. These plugs are designed as direct replacements for the factory spark plugs, fitting perfectly with the OEM specifications. It is recommended to follow the vehicle manufacturer’s torque specifications when installing to ensure proper sealing and performance.

Because the gap is fixed and cannot be adjusted, there is no need for gap setting during installation, reducing the risk of improper setup and ensuring reliable ignition performance from the start.

What's Included

• Box of 4 E3 Spark Plugs (Part # E3.68)
• Each plug features a fixed DiamondFIRE gap and gasket seat

Ideal For

These spark plugs are ideal for Scion tC owners seeking a reliable, long-lasting ignition solution that enhances fuel efficiency and reduces emissions. They are perfect for daily drivers, performance enthusiasts, and anyone looking to maintain or improve their vehicle’s engine performance without extensive modifications.

E3 Spark Plugs uses its patented DiamondFIRE design to target efficient combustion and consistent ignition performance across automotive and racing applications. For performance builds, a quality spark plug choice can support clean burn characteristics and reliability—especially when tuning for higher cylinder pressures or more demanding driving conditions.