Sierra 18-5273 marine tune up kit. Display Package. Fits: GM V-8 Engines with Thunderbolt IV & V HEI Ignitions. Replaces: GLM 71780, Mallory 9-29350, Mercury Marine 805759T3, 805759Q3.
About Sierra
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.
