Replacement Distributor Cap Tune Up Kit – Fits MerCruiser GM V8 Engines with Thunderbolt IV, V HEI Ignition System – Replaces 187523, 805759Q3, 805759T3, 815407A2, 815407Q5 – Rotor, Cap, Gasket

The distributor distributes the high voltage spark from the coil to the correct cylinder required. Eventually they wear out over time like the spark plugs and wires resulting to poor electrical insulation which causes engine problems in the future therefore making it important to be part of the regular tune-up maintenance. Only works with HEI (High Energy Ignition) Systems and will not work with Point Ignition Systems. This replacement ignition coil by AA Ignition made by an original equipment supplier will get your 5.0L, 5.7L, 6.2L, 7.4L & 8.2L Mercruiser GM petrol engines with Thunderbolt 4 and 5 ignition systems.

Fits the following engines:

• 5.0L V8
• 5.7L V8 (Inc 350 MAG)
• MX 6.2L V8
• 7.4L V8 (Inc 454 MAG)
• 8.2L V8 (Inc 502 MAG)

Replaces part numbers: 18-5723, 805759Q3, 805759T3, 815407A2, 815407Q5, 185723, 185710, 185395, 71780, 929350, 64759K, RL5273, 18-5710, 18-5935

This is a compatible replacement part manufactured by AA Ignition. This distributor cap kit is NOT a genuine Sierra, Mercury, GLM, Redline, Pro Marine or Mallory part. Sierra, Mercury, GLM, Redline, Pro Marine, Mallory and their associated vehicle models and part numbers are used in this listing only to identify what this distributor cap kit fits.

• REPLACEMENT DISTRIBUTOR CAP KIT WITH GASKET – Distributes the high voltage spark from the coil to the correct cylinder required. Eventually they wear out over time like the spark plugs and wires resulting to poor electrical insulation which causes engine problems in the future therefore making it important to be part of the regular tune-up maintenance.
• FITS GM V8 308, 350, 454, 502 ENGINES WITH THUNDERBOLT IV & V IGNITION SYSTEM – Only works with HEI (High Energy Ignition) Systems and will not work with Point Ignition Systems. This replacement ignition coil by AA Ignition made by an original equipment supplier will get your 5.0L, 5.7L, 6.2L, 7.4L & 8.2L Mercruiser GM petrol engines with Thunderbolt 4 and 5 ignition systems.
• REPLACES PART# 18-5723, 805759Q3, 805759T3, 815407A2, 815407Q5, 185723, 185710, 185395, 71780, 929350, 64759K, RL5273, 18-5710, 18-5935. The distributor can easily be located usually beside the engine. If you are experiencing hard starting or losing power when the engine is hot or your boat is running erratically then your distributor may need a tune-up using this kit.
• OEM FIT, QUALITY, FINISH – While this is not a genuine MerCruiser, Sierra, Mercury, GLM or Mallory part, it is a direct replacement for your OMC Cobra Sterndrive boat or MerCruiser boat engine and it will appear, fit and work like the factory part. Save time and hundreds of dollars off of dealer prices by replacing the part yourself.
• 2 YEAR WARRANTY – This distributor cap tune up kit comes complete with the mounting bolts and gasket and a 2 year warranty. If the distributor cap kit ever fails on your boat or V-8 engine within the warranty period, simply contact us for a replacement. Save time and money by purchasing this part, installing it yourself and taking advantage of this warranty.