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-50 Oil – Replaces MC8M0097859

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

This factory-authorized Quicksilver kit is designed for the Mercury-recommended 300-hour major service interval on Verado L6 (inline 6-cylinder) 4-stroke outboards. It combines a full engine oil change with lower unit gear lube service, fuel filtration (where applicable in the OEM spec), and all necessary gaskets/seals—ensuring comprehensive preventive maintenance to maintain peak performance, protect against wear, and support warranty compliance in demanding marine environments.

The kit is tailored for engines equipped with the 5.44" torpedo lower unit (common on most Verado L6 models in this HP range) and includes high-performance 25W-50 oil for superior protection under high heat, load, and RPM.

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

• Quicksilver SAE 25W-50 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 kit configuration) # 8M0053664 or equivalent
• Quicksilver Oil Filter # 877769Q01 (premium filtration for clean oil flow)
• 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 spec (replaces factory kit P/N QS8M0097859)

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)
• Specifically for engines with the 5.44" torpedo lower unit gearcase (verify your lower unit diameter if unsure)
• Oil specification: 25W-50 semi-synthetic — ideal for Verado’s supercharged design and high-output use; always cross-check your owner’s manual and engine serial number
• 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 Mercury factory part # QS8M0097859 (and includes oil change components)
• Confirm exact fitment with your engine serial number and owner’s manual. 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 all-in-one 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 — perfect for major maintenance intervals.

Questions about compatibility, serial number confirmation, or kit contents? Just ask — happy to assist! ?