NGK 48978 Ignition Coil

NGK COP Ignition Coil for Audi and Volkswagen

Restore consistent spark output with the NGK COP (Pencil Type) Ignition Coil, part number 48978. This 12-volt distributorless ignition coil is built for late-model Audi and Volkswagen applications that use a coil-on-plug design, including Audi A4, A5, Q5, Q7, TT, and Volkswagen Jetta, GTI, Tiguan, and Passat models.

NGK’s COP ignition coil line is developed for OE-style fit and performance, with manufacturing and testing practices focused on durability, electrical stability, and dependable operation in demanding engine environments.

Key Features

• COP (pencil type) ignition coil for distributorless ignition systems
• 12-volt design with blade terminals
• Female connector and male terminal configuration
• 4-terminal layout for proper electrical connection
• Oil-filled: No
• Mounting bracket included: No
• NGK part number 48978 / stock number 48978

Product Details

The NGK 48978 ignition coil is engineered for direct replacement use on a wide range of Audi and Volkswagen vehicles. It supports coil-on-plug ignition systems found on models such as the Audi A4, A4 Quattro, A5 Quattro, Q5, Q7, TT Quattro, and Volkswagen Golf, GTI, Jetta, Passat, Tiguan, and CC. If you are searching for an Audi A4 ignition coil, Volkswagen GTI ignition coil, or NGK 48978 coil for a distributorless ignition system, this part matches those common fitment needs.

NGK backs this coil with more than 80 years of automotive experience and a focus on OE-level standards. The coil design is developed and tested in an ISO 17025 accredited lab under severe conditions to verify performance and durability beyond normal vehicle operation. This part cross-references Standard Ignition UF-575 for the same application.

Common Issues This Part Can Address

• Engine misfire under load or at idle
• Rough running or hesitation during acceleration
• Hard starting caused by weak ignition output
• Check engine light related to ignition coil performance
• Intermittent spark loss in coil-on-plug systems

Installation Notes and Tips

Confirm connector style, terminal layout, and engine application before installation. This NGK COP ignition coil uses a female connector, male terminals, and a blade-style terminal design, so matching the original coil configuration is important for proper fitment. Always inspect spark plugs, wiring, and related ignition components when replacing a failed coil to help prevent repeat ignition faults.

Compatible With: Fits 2005-2016 Audi A4, N/A; Fits 2005-2016 Audi A4 Quattro, N/A; Fits 2010-2017 Audi A5 Quattro, N/A; Fits 2011-2017 Audi Q5, N/A; Fits 2008-2010 Audi Q7, N/A with Black Top Coil; Fits 2009-2015 Audi TT Quattro, N/A; Fits 2006-2014 Volkswagen GTI, N/A; Fits 2005-2014 Volkswagen Jetta, N/A; Fits 2009-2017 Volkswagen Tiguan, N/A; Fits 2009-2017 Volkswagen CC, N/A.

Quality Assurance

NGK manufactures ignition coils to meet or exceed OE standards and validates designs through rigorous laboratory testing for durability and operational performance. The brand’s long-standing OE legacy and broad late-model vehicle coverage support confident replacement selection for Audi and Volkswagen ignition service.