NGK
NGK COP (Waste Spark) Ignition Coil

NGK 48648 Ignition Coil

Brand NGK 48648
Voltage 12
Ignition Type Distributorless
Coil Type Cop (waste spark)
Oil Filled No
Terminal Type Blade
Terminal Quantity 3
Connector Gender Female
Terminal Gender Male
Mounting Bracket Included No
Part Number U4033
Stock Number 48648
Product line NGK COP (Waste Spark) Ignition Coil
Fits Mazda · 5 vehicles

OE-standard quality. Manufactured to meet or exceed OE standards for dependable performance.

Distributorless ignition. Built for modern ignition systems with a COP waste spark design.

Blade terminals. Features a female connector and male blade terminals for secure connection.

Cross-references Beck/Arnley 178-8255, Delphi GN10438 and NGK 48648 for the same application. See all 14.

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NGK Ignition Coil for Mazda Protege

The NGK 48648 ignition coil is a distributorless COP (waste spark) coil built for 12-volt systems and OE-level performance. It is a direct-fit ignition coil for 1999-2003 Mazda Protege models, including applications commonly searched as Mazda Protege ignition coil replacement and NGK 48648 for Mazda Protege.

Key Features

  • Distributorless ignition coil for waste spark applications
  • 12-volt electrical design
  • 3-terminal blade connection with female connector and male terminals
  • Oil-filled construction: No
  • Built to meet or exceed OE standards for durability and consistent operation
  • Developed and tested in an ISO 17025 accredited lab

Product Details

NGK COP (Waste Spark) Ignition Coil part number 48648 is engineered for late-model domestic and import ignition systems that require a reliable distributorless coil. NGK’s ignition coil line is backed by decades of OE-focused experience and is manufactured with controlled testing and quality standards to support stable spark delivery and dependable engine operation. This NGK 48648 coil is a practical replacement for drivers servicing a Mazda Protege ignition system and looking for a direct OE-style ignition coil solution.

This part cross-references Standard Ignition UF-276 for the same application.

What It Helps Fix

  • Engine misfire caused by a weak or failing ignition coil
  • Hard starting related to inconsistent spark output
  • Rough idle from ignition breakdown under load
  • Loss of power during acceleration due to coil failure
  • Check engine light conditions tied to ignition performance

Installation Notes and Tips

Fits 1999-2003 Mazda Protege, N/A. Confirm the connector style, terminal count, and ignition type before installation. Inspect spark plugs and related ignition components at the same time, since worn plugs can shorten coil life and affect performance. Use the vehicle’s service information for proper diagnostic and installation procedures.

Quality Assurance

NGK manufactures this ignition coil to meet or exceed OE standards and validates designs in an ISO 17025 accredited test lab under demanding conditions. The NGK 48648 reflects NGK’s long-standing OE legacy and focus on ignition system quality.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2003MazdaProtege1.6LL4N/ANGK COP (Waste Spark) Ignition Coil
2002MazdaProtege1.6LL4N/ANGK COP (Waste Spark) Ignition Coil
2001MazdaProtege1.6LL4N/ANGK COP (Waste Spark) Ignition Coil
2000MazdaProtege1.6LL4N/ANGK COP (Waste Spark) Ignition Coil
1999MazdaProtege1.6LL4N/ANGK COP (Waste Spark) Ignition Coil
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Beck/Arnley — 178-8255Delphi — GN10438NGK — 48648Standard Ignition — UF-276Walker Products — 921-2042141508988921413E571AE787IC335IC335SBUF276UF276TZM01-18-100