Mercury Verado L6 300-Hour Maintenance & Oil Change Kit – Quicksilver OEM – Fits 200/225/250/275/300/350/400/400R HP (5.44" Torpedo Lower Unit) – 25W-40 Oil

Genuine Quicksilver Mercury Verado L6 300-Hour Maintenance & Oil Change Kit Complete OEM Service Bundle for Verado Inline-6 Outboards with 5.44" Torpedo Lower Unit – 200, 225, 250, 275, 300, 350, 400 & 400R HP

This factory-authorized Quicksilver kit is designed for the Mercury-recommended 300-hour major service on Verado L6 (inline 6-cylinder) 4-stroke outboards equipped with the 5.44" torpedo lower unit gearcase (larger/heavier-duty size; confirm by measuring the bushing diameter at the anti-ventilation plate — 5.44" vs. 4.8" for standard/original variants). It includes a comprehensive set of genuine Mercury components for engine oil change, fuel filtration (where applicable), lower unit gear lube refresh, and essential seals/gaskets—providing thorough preventive maintenance to sustain performance, reduce wear, and help maintain warranty coverage during high-hour operation.

Kit Includes (All Genuine Quicksilver / Mercury OEM Parts):

• Quicksilver SAE 25W-40 Semi-Synthetic 4-Stroke Marine Engine Oil (quantity sufficient for full Verado L6 capacity ≈7.4 quarts per engine, typically 4–6 gallons depending on exact configuration) # 8M0078620 or equivalent
• Quicksilver Oil Filter # 877769Q01 (premium filtration for clean oil circulation)
• Quicksilver High-Performance Gear Lube (SAE 90 marine-grade) # 858064Q01 (quantity for one lower unit ≈32–34 oz fill)
• Lower Unit Fill/Drain Plug Seals / Gaskets # 830749 (multiple pieces for secure reassembly)
• Engine Oil Drain Plug Seal (new OEM washer for leak-free service)
• Additional required gaskets, seals, and components per the 300-hour specification

Brand New in Original Packaging – Never Opened

Important Fitment & Usage Notes:

• Compatible with Mercury Verado L6 models: 200 HP, 225 HP, 250 HP, 275 HP, 300 HP, 350 HP, 400 HP, 400R (including high-performance variants) equipped with the 5.44" torpedo lower unit (larger gearbox; not for 4.8" variants—measure bushing diameter if unsure)
• Oil specification: 25W-40 semi-synthetic — suitable for most Verado engines; confirm exact recommendation in your owner’s manual and by engine serial number (25W-50 may be preferred for extreme heat/high-load conditions)
• Oil capacity (per engine): Approximately 7.4 quarts with filter change — fill gradually, run engine briefly, check dipstick, top off as needed
• Gear lube capacity: ~32–34 oz per lower unit — fill from bottom plug to top vent overflow
• This kit replaces the factory Mercury 300-hour service kit for 5.44" torpedo models (similar to P/N QS8M0097859 variants)
• Always verify your engine serial number, lower unit type, and owner’s manual for exact match. Message with serial details if you need verification.

Shipping Notice: Oil and lubricants cannot be shipped to PO Boxes. A valid physical street address is required at checkout.

This comprehensive OEM kit simplifies the 300-hour service, uses only Mercury-approved parts, and helps extend engine life while keeping your Verado reliable and efficient. Fast shipping — ideal for major maintenance intervals.

Questions about compatibility, serial number confirmation, lower unit measurement, or anything else? Just ask — happy to assist! ?