2PCS Tilt Trim End Cap Seal Assy for Mercury Mariner 99638A1 8M0021648 878243A1 Features Fitment -- Perfect Suitable for Mercury Mariner Generation 1, 2 & 3 3 Ram Style Trim Units. 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. Package Includes -- 2 PCS Tilt Cap/Gland with Seals. .
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