Denso 671-4198 Spark Plug Wire Set

Denso 671-4198 Spark Plug Wire Set

Denso 671-4198 is a 7mm spark plug wire set built for direct replacement on select Nissan Altima models. It follows factory-style form, fit, color, and performance targets for a clean OE-style ignition service part.

Compatible With 1997-2001 Nissan Altima, N/A. The Denso 7mm wire design supports consistent ignition transfer while matching the original routing and terminal style used on the application.

Key Features

• Brand: Denso
• Part number: 671-4198
• 7mm insulation outside diameter
• OE-style replacement wire set for factory-fit applications
• Sil PBT Sil spark plug boot material
• 90-degree spark plug end boot for routing clearance
• Female spark plug end terminal type
• Male distributor/coil end terminal type

Product Details

The Denso 7mm line is focused on direct-fit ignition service parts that mirror original equipment dimensions and connection styles. For the Nissan Altima, this wire set is built to match the factory-installed configuration, helping maintain proper routing, terminal engagement, and ignition performance. If you are replacing worn ignition leads on a 1997-2001 Nissan Altima, Denso 671-4198 provides an OE-style solution with the correct boot angles and terminal types for the application.

This part cross-references NGK NX15 and Bosch 09836 for the same application.

Common Issues 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 coil/distributor end

Installation Notes and Tips

Verify wire routing against the original layout before removal to avoid crossfire or heat contact issues. Confirm each boot seats fully on the spark plug and coil/distributor terminals, and inspect adjacent ignition components for wear before installation. For best results, replace wires on a cool engine and route them away from sharp edges and hot surfaces.

Quality Assurance

Denso First Time Fit ignition wire sets are engineered to meet or exceed OE/OES standards for form, fit, and performance. The 671-4198 is built as a direct replacement for the specified Nissan Altima applications and follows factory-style construction requirements.