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Mercruiser Ignition Tune-Up Kits

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

Click HERE for the ECM's, Ignition Coils, Plug Wires and Spark Plug Charts.

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.

Spark Plug Wire Kits

Spark plug wires fail with age and heat.
The end contacts can get charred, rusted or corroded.
The wires get hard and brittle and leak voltage.
Bad spark plug wires can be an explosion hazard.

Do you have a loss of power? Is your engine missing? Do you hear a "snapping" sound?
It might be time for new wires.

84-816761K5 Plug Wire Set $ 48.00
Fits GM 4 cyl engines with conventional points ignition (1963-1995).

84-816761Q13 Plug Wire set $49.00
Fits MCM 3.0L/LX w/Delco digital ignition (1990-1995)

84-816761K6 Plug Wire Set $87.67
Fits Mcm 4 cyl (3.7L) engines w/conventional points ignition (1985-1989)

84-816761Q8 Plug Wire Set $63.00
Fits GM in-line 6 cyl engines w/conventional points ignition (1963-1981)

84-816761Q7 Plug Wire set $63.00
Fits GM V6 229 cid engines w/conventional points ignition (1983-1984)

84-816761K16 Plug Wire Set $64.00
Fits GM V6 262 cid engines w/Thunderbolt Ignition (1985 and newer)

84-816608Q82 Plug Wire Set $71.00
Red Wires. Fits GM V6 262 cid engines w/Delco HEI ignition (1996 and newer)

84-863656A2 Plug Wire Set $118.00
Fits MCM 4.3L MPI

84-816761K9 Plug Wire Set $76.00
Fits GM & Ford V8 engines w/conventional points ignition (1963-1982) and
Thunderbolt Ignition (1968-1976)

84-816761Q12 Plug Wire Set $75.00
Fits MIE 5.7L Ski w/conventional points ignition (1985-1995)

84-816761Q10 Plug Wire Set $75.00
Fits GM V8 454/482 cid engines with conventional points ignition (1977-1985) and
Thunderbolt Ignition (1969-1981)

84-816761K17 Plug Wire Set $73.00
Fits GM V8 305/350 cid engines w/Thunderbolt IV and V ignition (1987 and newer)

84-816608Q83 Plug Wire Set $80.00
Red wires. Fits GM V8 305/350/377 cid engines w/Mercury ignition (1999 and newer)

84-816761Q3 Plug Wire Set $75.00
Fits GM V8 305/350 cid engines (RH rotation) w/ Thunderbolt IV ignition (1981-1993)

84-816761K4 Plug Wire Set $72.00
Fits GM V8 305/350 cid engines (LH rotation) w/Thunderbolt IV ignition (1981-1995)

84-816608Q80 plug Wire Set $80.00
Red wires. Fits 5.7L MIE (inboard) & Ski w/Thunderbolt ignition (1998 and newer)

84-847701Q24 Plug Wire Set $89.00
Blue wires. Fits MIE (inboard) 350 Mah Horizon (1999 and newer)

84-816608K61 Plug Wire Set $79.00
Red wires. Fits GM V8 454/502 cid engines w/Thunderbolt IV and V ignition (1981-1997)

84-847701Q7 Plug Wire Set $88.00
Blue wires. Fits GM Hi-Perf V8 454/502/540/572 cid engines w/Thunderbolt IV ignition (1990 and newer)

84-816608Q70 Plug Wire Set $81.00
Red wires. Fits GM V8 305/350 cid engines w/Delco HEI ignition (1995-1998)

84-816608Q71 Plug Wire Set $80.00
Red wires. Fits GM V8 350 cid engines w/Delco HEI ignition (1995-1998)

84-816608K68 Plug Wire Set $79.00
Red wires. Fits GM V8 350 & 454/502 cid engines w/Delco HEI ignition (1993 and newer)

84-816608Q78 Plug Wire Set $81.00
Red wires. Fits Black Scorpion Ski w/Delco HEI ignition (1997-1998)

84-816608Q81 Plug Wire Set $80.00
Red wires. Fits Black Scorpion w/Delco HEI ignition (1999 and newer)

84-847701Q18 (previously A18) Plug Wire set $88.00
Blue wires. Fits MIE (inboard) 377 cid Scorpion Ski (1997-1998)

84-847701A26 Plug Wire Set $84.00
Blue wires. Fits MCM 377 Scorpion (1999-2000)

84-847701Q17 Plug Wire Set $89.00
Blue wires. Fits MIE (inboard) 454 Mag Horizon (1998)

84-847701Q25 Plug Wire set $88.00
Blue wires. Fits MCM 500 EFI (1998 and newer) & 575 SCi (2000 and newer)

84-863656A1 Plug Wire Set $122.85
Fits 2001 and newer MCM/MIE 5.0L MPI, 350 Mag MPI & Mx 6.2L MPI engines with
ECM 555 ignition (s/n 0M3000000 and up)

84-863656A03 Plug Wire Set $123.30
Fits Black Scorpion Ski & MX 6.2L Blk Scorpion Ski (s/n 0M391599 and up)

84-881698 Plug Wire Set $518.00
Fits MCM 496 Mag & HO and MIE 8.1L & HO (2000 and newer)

84-840955T01 Plug Wire Set $168.00
Fits MCM 525 EFI

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: outdriveshop@bellsouth.net



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