Denso 671-4143 Spark Plug Wire Set

Denso 671-4143 Spark Plug Wire Set

Denso 671-4143 is a First Time Fit spark plug wire set built to match the form, fit, color, and performance of the original factory wire set. It is a direct replacement for select Toyota 4Runner, Tacoma, and T100 applications from 1997-2000, with OE-style construction that meets or exceeds original equipment standards.

Key Features

• First Time Fit design for OE-style replacement on select Toyota ignition systems
• 5mm insulation outside diameter for a factory-style wire profile
• Sil PBT Sil spark plug boot material for heat-resistant, durable connection points
• 90-degree spark plug end boot for routing in tight engine bays
• Female spark plug end terminal type and male distributor/coil end terminal type
• Direct fit for 1997-2000 Toyota 4Runner, 1997-2000 Toyota Tacoma, and 1998 Toyota T100

Detailed Description

This Denso spark plug wire set is engineered for drivers who want a replacement that follows the original equipment layout and connection style. The 5mm wire diameter, 90-degree spark plug boots, and OE-matching terminal configuration help maintain proper routing and secure electrical contact in the ignition system. For shoppers searching for a 1997-2000 Toyota 4Runner spark plug wire set, a 1997-2000 Toyota Tacoma ignition wire set, or a 1998 Toyota T100 replacement wire set, part number 671-4143 provides a direct-fit solution.

Denso’s First Time Fit line focuses on factory-style replacement parts, and this wire set follows that approach with construction intended to meet or exceed OE/OES standards. This part cross-references NGK TX67 and ACDelco 964F for the same application.

Common Problems This Part Can Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition voltage transfer
• Engine hesitation during acceleration
• Cracked or heat-aged wire insulation

Installation Notes and Tips

Verify engine application before installation and route each lead to match the original wire path. Confirm the 90-degree spark plug boots and terminal ends are seated fully at the spark plug and distributor or coil connections. On Toyota 4Runner, Tacoma, and T100 applications, correct routing helps reduce crossfire and keeps the ignition system organized.

Quality Assurance

Denso First Time Fit ignition wire sets are built to OE-style standards and are intended to match factory-installed wire sets in form, fit, color, and performance. Part number 671-4143 is manufactured to meet or exceed OE/OES construction requirements for consistent ignition service.