MZANNI SwiftFlusher Outboard Quick-Connect Flush Kit for Yamaha & Honda Single Motors — 3/4" GHT Water-Stop, Tool-Free Seal

MZANNI SWIFTFLUSHER is a quick-connect outboard flushing kit that replaces OEM flush ports to make rinsing Yamaha and Honda four-stroke engines faster, leak-resistant, and tool-free.

Keeping salt, sand and deposits out of your outboard’s cooling passages extends service life and reduces corrosion risk. The SWIFTFLUSHER system from MZANNI is designed to work with a wide range of Yamaha and Honda four-stroke outboards, delivering a simple, one-handed connection that seals precisely to the factory port and routes fresh water through the engine for an efficient flush.

Which engines will this SWIFTFLUSHER fit?

This kit fits most modern four-stroke Yamaha and Honda outboards within the specified ranges. It supports Yamaha 8–425 HP models with a flush port (excluding 75/90/115 HP listed exceptions) and Honda four-stroke engines from 40–350 HP. Always verify your model’s OEM flush port before purchase.

• Yamaha: four-stroke models 8–425 HP (not compatible with certain 75/90/115 HP port types).
• Honda: four-stroke models 40–350 HP.
• Direct-replacement design to match OEM flush port geometry for a snug seal.
• Includes adaptors and spare parts for common connection needs.

How does SWIFTFLUSHER save time during routine maintenance?

The kit eliminates fiddly adapters and awkward hose holds by offering quick male and female connectors that snap together reliably. That reduces setup and teardown time so you can complete flushing tasks with minimal effort between outings. The included water-stop adapter prevents spills when disconnecting.

• Tool-free quick-connects speed hookup and removal.
• Water-stop valve prevents drips when changing hoses.
• Precision fit minimizes rework or repeat attempts to seal the port.
• Spare parts included for fast on-deck repairs.

What materials and durability features does the kit use?

SWIFTFLUSHER components are molded from marine-grade high-density ABS and nylon for long-term UV and saltwater exposure resistance. Each piece is engineered and tested for a tight, leak-free fit so the connection remains reliable under normal boating conditions. The parts resist cracking, discoloration and basic wear from repeated use.

• High-density ABS and marine-grade nylon construction.
• UV-stable formulation for sun-exposed use.
• Precision molding for leak-free engagement with OEM ports.
• Durable seals and spare kit included for maintenance.

What comes in the box and how do I use the parts?

The package supplies a male quick connect, two female quick connects (one with an integrated water-stop and 3/4" GHT fit), and a spare-parts kit for O-rings and small components. Installation typically replaces your original flush port adapter—push the male and female fittings together until they click, open your garden hose, then engage the engine’s flush mode per manufacturer guidelines.

• 1 × male quick connect for the engine port.
• 2 × female quick connects, including water-stop with 3/4" GHT.
• 1 × spare parts kit with replacement seals and hardware.
• Simple push-to-connect operation; disconnects cleanly with water-stop engaged.

Who is this for: Boaters, anglers and mariners who routinely flush four-stroke Yamaha or Honda outboards and want a faster, more reliable way to connect a hose for maintenance. It’s ideal for owners who prefer a durable, UV-resistant kit with spare parts included and those who want to reduce time spent on post-trip engine care.