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Mercruiser Thunderbolt Ignition parts. Sensor. Ignition module. Brain

Mercruiser Thunderbolt Ignition Tune-Up Kits

[Standard Points-Style Ignition][Thunderbolt Ignition][Delco EST & HEI Electronic Ignition][Ignition & EFI Tools]

Click HERE for the Tune-Up Kit Chart.

Keeping your engine well tuned will improve performance and save fuel. Performing a complete tune-up can often take care of nagging running and starting problems. It is more difficult to troubleshoot a poor running engine that is not tuned.

Thousands of "do-it-yourselfer" customers perform their own tune-ups every year and they save good money doing it.
With a factory Service Manual and the correct tools, tune-up's are snap.

The Engine Owners Manual that came with your engine has a wealth information pertaining to
tune-up and maintenance procedures and schedules.

The Thunderbolt Ignition system was designed by Mercury Marine.
It is a very powerful and reliable ignition system.

The Thunderbolt system does not use points. Instead, it has an electronic "Sensor" in the distributor which sends a low voltage pulse to the Ignition Module each time a Sensor Wheel tab passes through the Sensors gap.

The Sensor Wheel is attached to the Rotor. When you buy a rotor, you get the sensor wheel. They should always be replaced together.

Thunderbolt Cap & Rotor/Sensor Wheel Kits

815407T5 Cap & Rotor-Sensor Wheel Kit $36.00
Fits V6 engines with Thunderbolt Ignition
Includes cap, rotor, sensor wheel and gasket.
805759T3 Cap & Rotor-Sensor Wheel Kit $45.00
Fits V8 engines with Thunderbolt Ignition
Includes cap, rotor, sensor wheel and gasket.
A complete tune-up would address the following items:
Distributor Cap and Rotor
Breaker Points and Condenser (conventional ignition)
Spark Plug Wires
Spark Plugs
Fuel Filters (often more than one)
Carburetor (adjustment or rebuild)
Fuel Injection Components (EFI and MPI systems)
Belts (serpentine or v-belt)
Flame Arrestor (clean & inspect)
Hoses (water and oil lines) and Hose Clamps
Oil and Oil Filter
Batteries and Battery Cable Connections
Dwell and/or Timing
Idle Mixture and Choke Adjustements
Shift Cable Adjustment
Engine Alignment and Mount Inspection
Drive Lube, Power Steering Fluid $ Trim Fluid levels
Complete Engine Inspection
Complete Steering and Gimbal Inspection
Grease Propshaft, gimbal and steering
Inspect Drive or Transmission
Check and/or Replace Anodes
Exhaust Tubes and Clamps
Ground and Bonding Cable Connections


Use original Mercruiser factory parts for your tune-up or service.
Send your information to: sterndrives@bellsouth.net



   If you prefer, you can simply EMAIL us with your question(s) or request.

Mercruiser Sterndrive Parts.
Pre-Alpha, R, MR and MC1 Parts
Alpha One Parts
Seal Kits
Alpha One Gimbal (Transom) Parts and Kits
Alpha Gen II Parts
Alpha Gen II Gimbal (Transom) Parts and Kits
Bravo One Parts
Bravo Two Parts
Bravo Three Parts
Bravo Gimbal (Transom) Parts and Kits
TR and TRS Parts
Transom Seal Kits
Gimbal Bearings
Shift Cable Kits
Gear Kits
Shift Interuptor Switch Kits
Anodes and Zinc Kits
Water Pump Kits
Power Trim Pump Kits and Trim System Parts
Decal Sets
Sterndrive Special Tools
Mercruiser shop Manuals
Propellers
Remote Controls
Gauges
Trim Sender Switches
Trim Cylinder Assemblies
Mercruiser Engine Parts
Filters and Filter Kits
Tuneup Kits
Carburetor Rebuild Kits
Carburetors
Raw Water Pump Kits
Circulation Water Pumps
Spark Plugs
Spark Plug Wire Kits
Gasket Sets
Exhaust Manifolds
Exhaust Elbows
Exhaust Riser Kits
Exhaust Water Shutter Kits
Ignition Modules and Ignition Coils
Cooling System Parts
Starter Motors
Solenoids
Alternators and Charging Systems
Belts and Belt-Pulley Kits
Drive Couplers
Fuel Pumps (Mechanical and Electric)
Wire Harnesses
Gauges and Instruments
Partial Engine Assemblies
Grease, Lubricants and Adhesives


NEW DESIGN PREVIEW · Original catalog details retained. Please confirm part fit and availability before ordering.