Features:
WIDE COMPATIBILITY: These End Caps/Glands Fit for Mercury V6 Units Gen 2 & 3 1991-2017 135 150 175 200 225 250 300 Optimax EFI Carb.
WARM PROMPTS: Does NOT fit L6 Verado.
DIRECT REPLACEMENT: Replacement for OEM 878239 FSM042.
PREMIUM MATERIAL: Made from High Quality Aircraft Grade Aluminum, Viton & High Grade Urethane Seals. Produced on precision CNC machine tools. Hard Anodized for professional level reliability and durability.