OUR OFFICES ARE CLOSED TUESDAY, DECEMBER 24th THROUGH WEDNESDAY, JANUARY 1st FOR THE HOLIDAYS.
Orders received during this time will be processed when we resume normal business hours on Thursday, January 2nd.

Thank YOU for another great year and we are looking forward to keeping you on the water in 2025!
Merry Christmas, Happy New Year and God Bless YOU!

PLEASE NOTE - Some products are not immediately available. If your order will be delayed, we will e-mail you or call you and let you know.
E-MAIL US HERE about availability and we will respond quickly! We ship same day if your order was placed by 1:00 PM EST during normal business hours BASED ON AVAILABILITY.
NEXT DAY SHIPPING NOTE - Please see our Shipping Policy SATURDAY OR SUNDAY DELIVERY IS NOT AN OPTION.

Tune Up Kit Mercruiser 7.4 Liter Thunderbolt Complete Tune Up Kit Pre Vortec M74TBOLT

$205.00 $224.05


Comprehensive kit includes everything needed to tune-up Pre Vortec Mercruiser 7.4L engines with Thunderbolt electronic distributors.

  • For Mercruiser 7.4 liter 454 cu. in. Pre Vortec engines with Thunderbolt ignition systems
  • Mercruiser tune-up kit includes everything in one convenient package
  • Includes 8 NGK BR6FS Pre Vortec spark plugs, plug wires, distributor cap, rotor, 18-7844 fuel filter, 18-7824 oil filter and 8 oz. StarTron gasoline additive


WARNING- This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65warnings.ca.gov.