Denso 671-4155 Spark Plug Wire Set

Denso 671-4155 Ignition Wire Set

Denso 671-4155 is a 7mm spark plug wire set built to match factory-installed form, fit, color, and performance. It is a direct OE-style replacement for select Toyota applications, including 1990-1991 Toyota Celica, 1991 Toyota MR2, and 1992 Toyota MR2 built to 1/92.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire routing and fit
• Sil PBT Sil spark plug boot material for durable terminal protection
• 105-degree spark plug end boot for tighter engine bay routing
• Female spark plug end terminal type with male distributor/coil end terminal
• Built to meet or exceed OE/OES standards for construction and performance
• Direct replacement for Denso 671-4155 applications on Toyota Celica and Toyota MR2

Product Details

Denso First Time Fit ignition wire sets are engineered to replicate the original wire set configuration used on the vehicle. For Toyota Celica and Toyota MR2 owners searching for a 7mm spark plug wire set, this part number 671-4155 provides the correct OE-style layout, terminal design, and boot angles for the listed applications. This part cross-references NGK TX14 and TX15 for the same application.

The Denso 7mm product line focuses on factory-style replacement parts that align with original vehicle specifications. That makes Denso 671-4155 a practical choice when replacing worn ignition wires on 1990-1991 Toyota Celica or 1991-1992 Toyota MR2 models that require the listed configuration.

Common Problems This Part Can Address

• Misfires caused by aged or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition transfer
• Voltage leakage from cracked or worn wire insulation
• Poor terminal contact at the spark plug or distributor/coil end

Installation Notes

Verify engine application, wire routing, and terminal orientation before installation. Match the 105-degree spark plug boot positions to the original layout, and confirm the female spark plug ends and male distributor/coil end terminals are correct for the vehicle. For fitment reference, this part fits 1990-1991 Toyota Celica, N/A; 1991 Toyota MR2, N/A; and 1992 Toyota MR2, N/A to 1/92.

Quality Assurance

Denso states that First Time Fit ignition wire sets are built to OE/OES standards for form, fit, color, and performance, with construction that meets or exceeds original equipment requirements.