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- Sierra 18-5273 Tune Up Kit for Mercruiser V8 Thunderbolt HEI OEM Replacement
Sierra 18-5273 Tune Up Kit for Mercruiser V8 Thunderbolt HEI OEM Replacement
Product Code: SIE18-5273
Upgrade your Mercruiser V8 engine with the Sierra 18-5273 Tune Up Kit, designed for Thunderbolt HEI ignition systems.
- Compatible with Mercruiser V8 engines using Thunderbolt HEI ignition
- OEM replacement for Mercury part numbers 805759Q3 and 805759T3
- Reliable performance and easy installation
- Ideal for routine maintenance and improved engine efficiency
Choose Sierra for quality marine engine parts you can trust.