NGK 4717 Spark Plug

NGK Laser Platinum Spark Plug 4717 Overview

The NGK Laser Platinum Spark Plug 4717 is built for drivers who want OE-style ignition performance with durable platinum center electrode construction. It uses a 10 mm thread, .75 reach, flat seat, 5/8 hex, and a pre-gap of .028 for precise replacement service on the correct application.

NGK’s Laser Platinum line focuses on stable spark delivery and long service life for everyday driving. This spark plug is a practical choice for import and domestic ignition service where consistent combustion, reliable starting, and clean running matter.

Key Features

• Laser Platinum center electrode tip material for durable spark performance
• Copper center electrode core and nickel ground electrode core
• Standard ground electrode tip design with one ground electrode
• 5000 ohm resistance for ignition system compatibility
• Flat seat design with 10 mm thread diameter and .75 reach
• Pre-gapped at .028 for the specified application
• NGK part number 4717, also identified as PMR9B

Detailed Product Description

NGK 4717 is a Laser Platinum spark plug engineered for vehicles that call for a 10 mm, flat-seat plug with a .75 reach and 5/8 hex. The platinum tip supports consistent ignition performance, while the copper core helps manage heat transfer in normal engine operation. As an OE-focused ignition supplier, NGK builds this plug to meet original equipment standards for durability and dependable operation.

For fitment-based searches, this spark plug is the type of replacement part buyers look for when servicing ignition systems on specific Honda, Toyota, or Nissan applications that require the exact plug specification. Always verify the engine code and plug dimensions before ordering NGK 4717.

This part cross-references AMS Automotive 4717 for the same application.

What This Spark Plug Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from weak or inconsistent spark output
• Misfire concerns related to aged ignition components
• Reduced fuel efficiency from incomplete combustion
• Maintenance replacement for the correct OE-style plug specification

Installation Notes and Tips

Confirm the engine’s required thread diameter, reach, seat type, heat range, and pre-gap before installation. NGK 4717 uses a non-removable nut terminal and a 5/8 hex, so use the correct spark plug socket and torque specification for the engine. Check the gap only if the application procedure calls for adjustment, and inspect ignition wires or coils during service.

For vehicle-specific ordering, verify the exact application for Honda Civic, Toyota, or Nissan models before installation. The correct plug specification matters more than the vehicle name alone, especially on engines with tight ignition tolerances.

Quality Assurance

NGK is a major OE spark plug supplier in North America with decades of automotive manufacturing experience. The 4717 Laser Platinum spark plug is produced to support original equipment standards for durability and operational consistency.