Sierra 18-8804-1 Spark Plug Wire Set

• replaces: Mercury Marine 84-813720A3
• replaces: Mercury Marine 84-813720A2
• replaces: Mercury Marine 84-813720A4
• replaces: Mercury Marine 84-816761A4

Fits Mercruiser Big Block engines with Thunderbolt ignition. Replacement part for Mercruiser Inboard/Outboard #84-813720A2; 84-813720A3; 84-813720A4; 84-8167671A4 8 cylinder Thunderbolt ignition type For use with 260 TR; 305 CID LH & RH; 320 EFI; 330 TR; 350 CID LH & RH; 350 MAG; 420; 454 CID & MAG; 5.0L; 5.0L BI; 5.0LX; 5.7L; 5.7L IB; 7.4L; 7.4L IB.
 

• Ignition Type : Thunderbolt 8 cyl
• Lead Lengths : 1 Coil 12"
• Lead Lengths : 2 Spark 30"
• Lead Lengths : 2 Spark 35"
• Lead Lengths : 2 Spark 40"
• Lead Lengths : 2 Spark 45"