Description

The Mercury / Quicksilver 8M0133617 300 Hour Service Kit is a complete OEM maintenance kit designed for L6 Verado EFI 4-stroke outboards (200–350 HP).

This kit includes all required components to perform the 300-hour scheduled service, covering fuel, ignition, cooling, and wear items. It ensures proper engine performance, reliability, and compliance with Mercury maintenance intervals.

Designed specifically for inline 6-cylinder Verado engines, this kit eliminates the need to source individual service parts and guarantees correct OEM fitment and performance.

Key Features

• Genuine Mercury / Quicksilver OEM kit
• Complete 300-hour service package
• Designed for L6 Verado EFI 4-stroke outboards
• Covers fuel, ignition, cooling, and wear components
• Ensures proper maintenance interval compliance
• Direct OEM replacement components

Engine Compatibility

Mercury Verado L6 4-Stroke Outboards

• 200 HP
• 225 HP
• 250 HP
• 275 HP
• 300 HP
• 350 HP (see note below)

Serial Range

• 2B144123 and newer

Fits inline 6-cylinder (2.6L) Verado platforms (G5)

Fitment Notes

• Designed for L6 Verado EFI 4-stroke engines only
• Includes anodes (350HP models may require additional anodes)
• Not compatible with V6 or V8 Verado platforms

What’s Included (Kit Contents)

Typical kit includes:

• Oil filter
• Low-pressure fuel filter
• High-pressure fuel filter
• Gearcase drain seals (2)
• Spark plugs (6)
• Thermostat kit
• Water pump impeller repair kit
• Alternator / serpentine belt
• Anode kit

Specifications

• Part Number: 8M0133617
• Service Interval: 300 hours
• Engine Type: L6 Verado EFI 4-stroke
• Horsepower Range: 200–350 HP
• Cooling System: Raw water cooled outboards

When This Kit Is Required

• Scheduled 300-hour service
• High-hour engine maintenance
• Preventive service on Verado platforms
• Restoring performance and reliability

Installation Notes

• Follow Mercury service manual procedures
• Replace all included components during service
• Oil and gear lube sold separately
• Inspect additional wear items (hoses, clamps, etc.)
• Record service interval after completion

Alternate / Superseded Part Numbers

• Mercury / Quicksilver: 8M0133617

Parts Desk Insight

This kit is specific to inline-6 Verados — don’t mix it up with the newer V6/V8 kits. Wrong kit = missing parts or wrong thermostat.

Shipping: Ships same or next day for fast Canada wide shipping.