NGK 48912 Ignition Coil

NGK COP Ignition Coil for Toyota

The NGK 48912 ignition coil is a distributorless COP (pencil type) coil built for direct ignition systems that demand stable voltage delivery and consistent spark output. It is engineered to meet or exceed OE standards for durability and operational performance, making it a practical choice for Toyota Tacoma and Toyota 4Runner service work.

NGK’s COP (Pencil Type) Ignition Coil line focuses on late-model domestic and import coverage, with designs developed and tested in an ISO 17025 accredited lab under demanding conditions. The 48912 part number is also referenced as U5086, and it cross-references Beck/Arnley 178-8345 and Delphi GN10537 for the same application.

Key Features

• 12-volt ignition coil for distributorless ignition systems
• COP (pencil type) design for direct coil-on-plug applications
• Blade terminal style with 4 terminals
• Female connector and male terminal configuration
• Oil-filled: No
• Mounting bracket included: No
• NGK part number 48912 / U5086

Detailed Description

Built for OE-style ignition service, this NGK ignition coil supports direct spark delivery in distributorless systems. It is a fit for 2001-2004 Toyota Tacoma and 2000 Toyota 4Runner, both listed with N/A position in the fitment data. If you are searching for a Toyota Tacoma ignition coil or a Toyota 4Runner ignition coil by part number 48912, this unit matches the confirmed application data provided.

NGK backs this coil design with long-standing ignition expertise and manufacturing controls aimed at consistent electrical performance and durability. The 48912 coil is a straightforward replacement for vehicles using a COP pencil-type setup and is identified in interchange data with Standard Ignition UF-323 and DENSO Auto Parts 673-1304.

Common Issues This Part Can Address

• Engine misfire related to weak or inconsistent coil output
• Rough idle caused by ignition breakdown
• Hard starting tied to failing coil performance
• Loss of power under load from unstable spark delivery
• Check engine light concerns associated with ignition coil faults

Installation Notes and Tips

Verify the connector style, terminal layout, and confirmed fitment before installation. This coil uses a female connector, male terminal gender, and blade terminals, so matching the electrical interface is important on Toyota Tacoma and Toyota 4Runner applications. Inspect the spark plug, boot condition, and related ignition components during service to help avoid repeat failures.

Quality Assurance

NGK manufactures ignition coils to meet or exceed OE standards and validates designs in an ISO 17025 accredited test lab. The brand’s focus on ignition systems and broad vehicle coverage supports confident replacement selection for the 48912 coil.