Mercury - Oil Filter Verado L4 Filtration Anti-Drainback Steel Canister 877767Q01. Overview. There's a special kind of peace that comes from turning the key on a well-maintained engine. With a Verado, that feeling is even stronger - these engines are smooth, refined, and built to run hard when the day calls for it. The 877767Q01 Oil Filter helps keep that reputation intact. It's the kind of part that quietly does its job every minute the engine is running, capturing debris and helping your motor