Sierra International 18-5273 Medium Tune Up Kit

Sierra International 18-5273 Medium Tune Up Kit
- Fits GM V-8 Engines with Thunderbolt IV & V HEI Ignitions
- Use with 18-5470 Thunderbolt HEI Distributor
Sierra products are engineered to meet todayâ€™s high horsepower engine demands and stand up in the harsh marine environment. All Sierra products meet or exceed the original equipment part it replaces. Sierra supplies many OEM engine manufacturers and boat builders hundreds of quality parts every day

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