Features: * Application: Perfect Fit for Mercury Mariner Generation 1, 2 & 3 3 Ram Style Trim Units 135-250 HP. * Replacement: Alternative to Part # 1100- 8M0021648, 99638A1, 8M0021648, 878243A1 of function and performance. * Material: Made from top quality Aircraft Grade Aluminum and Viton & High Grade Urethane Seals. Hard Anodized for anti-wear, rust resistance, anti-oxidation and the End Cap/Gland is Using A Military Grade Type 3 Hard Coating for professional level reliability and durability. * Function: sed for the exterior of the part to seal and block the dust. Extend the life of your boat engine. .
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