Mercury Verado L6 300-Hour Maintenance & Oil Change Kit – Quicksilver OEM – Fits 200/225/250/275/300/350/400/400R HP (4.8" 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 with 4.8" Torpedo Lower Unit – 200, 225, 250, 275, 300, 350, 400 & 400R HP

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

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 configuration) # 8M0053664 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 (replaces factory kit P/N MC8M0097859)

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 4.8" torpedo lower unit (original gearbox; not for 5.44" variants—measure bushing diameter if unsure)
• Oil specification: 25W-50 semi-synthetic — recommended for Verado’s supercharged design and high-output/high-heat operation; always verify exact recommendation in your owner’s manual and by 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 # MC8M0097859 (and incorporates 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 streamlines 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! ?