SIERRA MerCruiser V8 Thunderbolt Spark Plug Wire Set – 18-8821-1

Description

SIERRA MerCruiser V8 Thunderbolt Spark Plug Wire Set – 18-8821-1

Sierra 18-8821-1 is a spark-plug wire set for MerCruiser V8 applications using Thunderbolt ignition. It uses the published lead configuration listed below and cross-references MerCruiser 84-813720A3, 84-813720A4, 84-816761A17, 84-816761A4, 84-816761Q17, 84-816761Q3, 84-816761Q4.

• Application: MerCruiser V8 applications using Thunderbolt ignition.
• Ignition system: Thunderbolt; 8 cylinders.
• Spark-plug lead lengths: 2 × 73.7 cm wires; 2 × 86.4 cm wires; 2 × 96.5 cm wires; 2 × 111.8 cm wires.
• Coil lead: 30.5 cm.
• Interchange references: MerCruiser 84-813720A3, 84-813720A4, 84-816761A17, 84-816761A4, 84-816761Q17, 84-816761Q3, 84-816761Q4.

Specifications

• Manufacturer: Sierra
• Part Number: 18-8821-1
• Application: MerCruiser V8 applications using Thunderbolt ignition
• Ignition Type: Thunderbolt
• Cylinder / Lead Count: 8
• Spark-Plug Lead Lengths: 2 × 73.7 cm wires; 2 × 86.4 cm wires; 2 × 96.5 cm wires; 2 × 111.8 cm wires
• Coil Lead: 30.5 cm
• OEM / Aftermarket Interchange: MerCruiser 84-813720A3, 84-813720A4, 84-816761A17, 84-816761A4, 84-816761Q17, 84-816761Q3, 84-816761Q4