MSD Direct Fit Spark Plug wire set for Mercruiser 525 EFI Replaces #84-840955T01 

"New" MSD Direct Fit Spark Plug wire set for Mercruiser 525 EFI Replaces Mercruiser #84-840955T01

This MSD spark plug wire set has been custom built to replace the stock inferior OEM wire set found on Mercruiser's 525 EFI series of engines. Each spark plug wire is manufactured from MSD 8.5MM Helicore performance wire and provides 10X the spark energy of OEM wire sets. By delivering more spark to the spark plug efficiency and performance are achieved.

These wires fit the serials numbers: OM900146 thru OM953619. Replaces Merc 84-840955T01

Wire Lengths:

  1. 42"
  2. 52.5"
  3. 41"
  4. 54.5"
  5. 35.5"
  6. 45"
  7. 36.5"
  8. 41"
MSRP: $352.99
Your Price: $299.99
You Save: 15% off MSRP!

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