Denso 671-4154 Spark Plug Wire Set

Overview of Denso 5mm Spark Plug Wire Set

The Denso 5mm Spark Plug Wire Set (Part Number 671-4154) is designed specifically for Toyota Celica and MR2 models. This ignition wire set ensures reliable electrical conductivity and optimal engine performance by providing precise fitment and durable construction.

• Spark plug boot material: Sil PBT Sil for enhanced heat resistance
• Distributor coil end terminal type: Male for secure connection
• Insulation outside diameter: 5.00 mm for effective electrical insulation
• Spark plug end boot degree: 90° angled boots for tight engine bay fitment
• Spark plug end terminal type: Female for proper spark plug connection
• Includes 4 angled spark plug end boots

Detailed Product Description

This Denso 5mm spark plug wire set is engineered to meet the specific ignition requirements of Toyota Celica and MR2 vehicles. The spark plug boots are made from Sil PBT Sil material, which offers excellent resistance to heat and wear, ensuring long-lasting performance under demanding engine conditions. The 5.00 mm insulation diameter provides reliable electrical isolation to prevent misfires and maintain consistent spark delivery.

The set features a 90-degree angled spark plug end boot design, allowing for easier installation in tight engine compartments while reducing stress on the wires. The distributor coil end terminal is male, and the spark plug end terminal is female, ensuring a secure and proper connection to both the coil and spark plugs. This set includes four angled spark plug end boots, matching the typical four-cylinder ignition system found in the compatible Toyota models.

About the Denso 5mm Brand Line

The Denso 5mm brand line focuses on ignition wire sets with a 5.00 mm insulation diameter, balancing durability and flexibility. This line is designed to provide consistent electrical performance and resistance to heat and abrasion, making it suitable for vehicles like the Toyota Celica and MR2 that require reliable ignition components for optimal engine operation.

Common Applications and Issues Addressed

• Replacement for worn or damaged spark plug wires in Toyota Celica and MR2
• Eliminates engine misfires caused by faulty ignition wiring
• Prevents voltage leaks and improves spark delivery consistency
• Reduces ignition system-related rough idling and poor acceleration
• Helps maintain engine efficiency and emissions compliance

Installation Notes and Tips

• Ensure the engine is cool before installation to avoid burns
• Match the spark plug wire lengths to the original set for proper routing
• Connect the male distributor coil end terminal securely to the coil
• Attach the female spark plug end terminals firmly to each spark plug
• Verify that the 90-degree angled boots fit snugly without bending wires excessively

Quality Assurance and Warranty

Denso manufactures this spark plug wire set to meet OEM specifications for Toyota Celica and MR2 models. The use of high-quality Sil PBT Sil materials and precise terminal design ensures durability and reliable performance. While specific warranty details are not provided, Denso products typically come with manufacturer-backed quality assurance to support long-term use.