Comprehensive kit includes everything needed to tune-up Mercruiser 5.0L & 5.7L Vortec engines with Thunderbolt electronic distributors 1996 AND UP.

• THIS IS VORTEC - 1996 AND HIGHER - PLEASE NOTE IF YOU HAVE A VORTEC ENGINE.
• FOR the Pre-Vortec Engine, Please click HERE for item MMD-M57TBOLT
• For Mercruiser 5.0 and 5.7 liter 350 cu. in. EFI engines from 1996-up with Thunderbolt ignition systems
• For Mercruiser 5.0 and 5.7 liter 350 cu. in. carbureted engines from 1998-up with Thunderbolt ignition systems
• Everything needed for a tune-up in one convenient kit
• Includes 8 NGK BPR6EFS Long Reach Vortec spark plugs, plug wires, distributor cap, rotor, 18-7844 fuel filter, 18-7824-1 oil filter and 8 oz. StarTron gasoline additive