NGK 1654 Spark Plug

Laser Iridium Spark Plug Overview

NGK Laser Iridium Spark Plug 1654 is built for specific Kawasaki VN1700 applications and follows OE-style specifications for proper ignition performance. It uses an iridium center electrode, nickel ground electrode, and a 0.044-inch pre-gap to match the listed fitment requirements.

Key Features

• Laser iridium center electrode for precise spark delivery.
• Copper core construction helps manage heat transfer.
• Standard ground electrode design with a single ground electrode.
• Flat seat and 12 mm thread diameter for the specified applications.
• 5000 ohm resistance and a non-removable nut terminal.
• Part number 1654 / stock number 1654 for identification.

Detailed Description

This NGK spark plug is engineered around the listed OE specifications for Kawasaki VN1700 Vulcan 1700 models, including Vaquero, Voyager, Nomad, Classic, and Classic LT applications. The Laser Iridium Spark Plug line combines an iridium center electrode with a nickel ground electrode and copper core construction to support consistent ignition characteristics, while the 0.044-inch gap and heat range 7 align with the fitment notes. Part number 1654 is also referenced as ILZKAR7B11 in the product data.

NGK is known for supplying original equipment spark plugs across domestic and import applications, and this part reflects that OE-focused manufacturing approach. This part cross-references Hygrade Tuneup 1654 and 92070-0036 for the same application.

What It Is Used For

• Restoring weak or inconsistent spark output.
• Addressing misfire concerns tied to worn plug electrodes.
• Replacing plugs that no longer hold the specified gap.
• Supporting smoother combustion in listed Kawasaki VN1700 engines.
• Correcting hard-start or rough-running ignition symptoms.

Installation Notes and Tips

Verify the engine application against the fitment table before installation. Confirm the specified 0.044-inch gap and use the listed seat type, thread diameter, and reach to match the cylinder head requirements. Part number 1654 should be checked against the vehicle service information for final confirmation on the Kawasaki VN1700 Vulcan 1700 Vaquero, Voyager, Nomad, Classic, and related ABS models.

Quality Assurance

NGK states that it maintains original equipment standards and manufactures spark plugs with more than 80 years of automotive experience. The brand’s OE supplier background and North American manufacturing presence support consistent product quality and application coverage.