Hella 230035721 Ignition Coil

HELLA Direct Ignition Coil for Mazda Miata

The HELLA Direct Ignition Coil is built to deliver stable ignition voltage and consistent spark energy for smoother engine operation and lower exhaust output. This flush-fitting pencil ignition coil is a direct-fit solution for select Mazda Miata applications, including 2001-2005 Mazda Miata models.

Key Features

• Flush-fitting pencil ignition coil design
• Bolted mounting type for secure installation
• 3-pole electrical connection
• Engineered for high vibration resistance
• Corrosion protection for long-term durability
• Tested for mechanical stability and reliable performance

Product Details

Hella part number 230035721 is a direct ignition coil designed for consistent spark delivery under demanding operating conditions. The coil’s flush-fitting pencil style and bolted mounting layout support a precise OE-style replacement on compatible Mazda Miata ignition systems. Hella 230035721 is also referenced by cross-reference part numbers such as Delphi GN10437 and NGK 48915 for the same application.

Compatible With 2001-2005 Mazda Miata, N/A. This fitment makes it a practical choice when replacing a worn ignition coil on Mazda Miata vehicles that need dependable ignition performance and stable engine operation.

What It Helps Address

• Misfires caused by weak or inconsistent spark output
• Rough idle and hesitation during acceleration
• Hard starting related to ignition coil wear
• Reduced ignition efficiency from vibration or corrosion damage
• Emissions concerns tied to incomplete combustion

Installation Notes and Tips

Verify the connector style, 3-pole configuration, and bolted mounting arrangement before installation. Confirm the existing coil matches the flush-fitting pencil ignition coil design and compare the part number against the vehicle’s original component. For Mazda Miata ignition coil replacement, inspect related ignition components for wear before completing the repair.

Quality Assurance

HELLA tests this ignition coil for performance, mechanical stability, vibration resistance, and corrosion protection to support dependable service life in varied operating conditions.