NGK 48689 Ignition Coil

NGK COP Ignition Coil for OE-Style Performance

The NGK COP (Pencil Type) Ignition Coil, part number 48689, is built for distributorless ignition systems that require a direct-fit pencil coil design. It is engineered to meet or exceed OE standards for durability and consistent spark delivery on late-model domestic and import vehicles, including select Audi, Bentley, and Volkswagen applications.

With 12-volt operation, a female connector, male blade terminals, and a COP pencil-type layout, this ignition coil is designed for clean electrical connection and reliable coil-on-plug service. NGK part number 48689 is also referenced as U5017 in some catalogs.

Key Features

• COP (pencil type) ignition coil for distributorless ignition systems
• 12-volt electrical specification
• Female connector with male blade terminals
• 4-terminal design
• Oil-filled: No
• Mounting bracket included: No
• OE-style construction for direct replacement use

Product Details

NGK’s COP ignition coil line is developed for vehicles that use coil-on-plug ignition, where each coil mounts directly to the spark plug. This design supports precise spark control and stable ignition performance in applications such as the 2003-2022 Bentley Continental, 2016-2018 Bentley Flying Spur, 2017 Bentley Bentayga, 2005-2009 Audi A8 Quattro, 2004-2006 Volkswagen Phaeton, and 2002-2004 Volkswagen Passat. The NGK 48689 ignition coil is a practical OE replacement choice when servicing misfire-related ignition faults or restoring proper coil output.

NGK backs this product line with more than 80 years of automotive experience and testing performed in an ISO 17025 accredited lab under demanding conditions. This part cross-references Delphi GN10445 and Standard Ignition UF-542 for the same application.

Common Issues This Coil Can Address

• Engine misfire codes related to weak or inconsistent ignition output
• Rough idle caused by a failing coil-on-plug unit
• Hard starting from degraded coil performance
• Loss of power under load due to ignition breakdown
• Intermittent spark delivery in distributorless ignition systems

Installation Notes and Tips

Verify connector style, terminal layout, and OE part number before installation. This coil is intended for distributorless ignition systems and should be matched to the vehicle’s original COP pencil-type configuration. Inspect the spark plug, boot, and connector condition during service, since worn components can affect coil performance. Confirm fitment for your specific Audi A8 Quattro, Volkswagen Passat, Volkswagen Phaeton, or Bentley application using the vehicle’s engine and model details.

Quality Assurance

NGK manufactures ignition coils to meet or exceed OE standards and validates designs through rigorous testing in an ISO 17025 accredited laboratory. The brand’s long-standing OE legacy and broad vehicle coverage support confident replacement selection for the NGK 48689 ignition coil.