Thunderbolt IV V-8 Distributor 

Key Features:

• Battery Powered (HEI) High Energy Ignition
• Uses a Hall-Effect type sensor to trigger ignition accurately even at extremely low RPM
• Designed as a direct replacement for Mercury Thunderbolt IV Ignition Distributors
• Meets or Exceeds SAE J1171 Standards

Additional Details:

• Fits: GM V-8 Engines w/Thunderbolt IV & V Ignition

Use With:

• 18-5273: Tune Up Kit

Interchanges/Replaces

GLM

• 71250

Mercruiser Stern Drive

• 805185A16
• 805185A26
• 805185A36
• 805185A43
• 805185A6
• 862057A4
• 90747A21
• 90747A25
• 90747A27
• 90747A3

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-5116-1	CDI E11-0005 GLM 73110 Mallory 9-29804 Mercruiser Stern Drive 87-861780A2 87-861780A4 87-861780Q4 87-892150A02 87-892150Q02 87-91019A2 87-91019A3 87-91019A6	1	Ignition Sensor		N/A
18-5395	CDI E64-0010 GLM 71510 Mallory 9-29403 Mercruiser Stern Drive 16457A4 43557 43557A1 805759A1 805759A2 805759A5 805759T1 805759T2 90746A1	1	Distributor Cap		N/A
18-5431	CDI E65-0009 GLM 71080 Mallory 9-29200 Mercruiser Stern Drive 13524A1 13524A3 13524A5 13524T1 19405A3 90576A2	1	Rotor Assembly, V8		N/A