Beru ZS178 Ignition Coil

Beru ZS178 Ignition Coil Overview

The Beru ZS178 ignition coil is a distributorless, plug-top coil designed for 12-volt systems with engine-head mounting. Built for Porsche applications, it supports direct ignition performance on select 911, Boxster, and Cayman models with OE reference 99760210402.

Key Features

• 12-volt ignition coil for distributorless ignition systems
• Plug-top cylinder design for direct spark delivery
• Engine head mounting with bolt-in installation style
• 3-terminal blade connection with female connector and male terminals
• No external resistor required
• No coil wire included and no mounting bracket included
• Dry design with no oil fill

Detailed Product Description

Beru ZS178 is an OE-style ignition coil engineered for gasoline engines that use a distributorless ignition setup. The cylinder-shaped, plug-top design mounts on the engine head and uses a 3-terminal blade connector for a secure electrical interface. As an ignition coil for Porsche 911, Boxster, and Cayman applications, it is built to match the electrical and packaging requirements associated with OE No. 99760210402.

Beru draws on long-standing German ignition engineering and OE manufacturing experience, with product development aligned to strict ISO-based standards. This part number, ZS178, is part of a range used across European, U.S., and Asian vehicle applications, but this listing is specifically matched to the Porsche fitments shown below. If you are replacing a failing Porsche ignition coil, Beru ZS178 provides a direct replacement path for the specified OE reference.

This part cross-references Porsche OE numbers 99760210402 and 99760210404 for the same application.

Vehicle Fitment

• Fits 2001-2009 Porsche 911, N/A, with OE No. 99760210402
• Fits 2003-2008 Porsche Boxster, N/A, with OE No. 99760210402
• Fits 2006-2008 Porsche Cayman, N/A, with OE No. 99760210402

Common Replacement Reasons

• Engine misfire under load or at idle
• Hard starting or intermittent no-start condition
• Rough running caused by weak spark output
• Check engine light related to ignition performance
• Restoring proper ignition output after coil failure

Installation Notes and Tips

Confirm OE reference 99760210402 before ordering, and verify connector style, terminal count, and engine-head mounting location against the original coil. Because this is a plug-top ignition coil, inspect the spark plug well and surrounding seals during replacement to help prevent contamination at the coil boot area. Always match the vehicle’s ignition system configuration to the part specifications listed here.

Quality Assurance

Beru is an OE supplier with more than a century of German engineering experience in ignition technology. The brand’s ignition coils are developed with vehicle and engine manufacturers and tested to proprietary standards used within Beru’s OE and aftermarket programs.