Mercury 200-400 HP V6 Verado Four Stroke Water Pump Repair Kit – 8M0078858

The cooling system on a V6 Verado does a lot more than just keep temperatures in check — it’s the backbone of the engine’s performance and longevity. That’s where the Mercury Marine Water Pump Repair Kit – 8M0078858 comes into play. Built specifically for 200 to 400 horsepower Verado FourStroke outboards, this kit delivers everything needed to overhaul the water pump and restore the reliable flow these powerful engines demand.

Each part — from the durable impeller to the wear plate and gaskets — is precision-matched to Mercury’s exact specs. That means no guesswork, no trimming, and no worrying whether the pieces will hold up under pressure. The materials are chosen to resist corrosion, heat, and the constant assault of saltwater and silt, so your cooling system stays strong in both coastal and offshore conditions.

What sets this kit apart:

• Complete package includes impeller, wear plate, key, gaskets, and hardware
• Designed exclusively for 200-400 HP V6 Verado FourStroke models
• OEM fit ensures everything locks into place without modification
• Built from corrosion-resistant materials suited for salt and freshwater use

Best for:

1. Routine pump rebuilds to prevent overheating and maintain peak cooling performance
2. Restoring proper water pressure after running in sandy or debris-filled areas
3. Ensuring reliable cooling on high-performance offshore rigs and heavily-loaded Verado setups

Staying ahead on water pump maintenance is one of the smartest ways to protect a high-horsepower outboard — this Mercury kit gives you the right parts to do it right the first time.