Mercury Quicksilver L6 Verado 100 Hour Service Kit 8M0120657

Mercury Quicksilver L6 Verado 100 Hour Service Kit 8M0120657

The Mercury 8M0120657 is a genuine OEM 100-hour maintenance kit for select inline-six Mercury Verado EFI four-stroke outboards. It packages the primary filters and drain seals needed for scheduled 100-hour service in one convenient kit, helping keep routine maintenance simple and on spec.

Compatible Applications

• 200 HP L6 Verado EFI
• 225 HP L6 Verado EFI
• 250 HP L6 Verado EFI
• 275 HP L6 Verado EFI
• 300 HP L6 Verado EFI
• 350 HP L6 Verado EFI
• Select 400 HP / 400R L6 Verado EFI applications where specified

Mercury lists this kit for L6 200400 HP Verado EFI outboards beginning at serial number 2B144123. Exact coverage can vary by horsepower and production range, so confirm your engine’s serial number against your owner’s manual before ordering. This kit is for Verado outboards, not a MerCruiser sterndrive service kit.

Kit Contents

• 1 Oil Filter 877769K01
• 1 Fuel Filter 8M0157616
• 1 Fuel Filter 8M0090809
• 1 Oil Drain Seal 8M0188614
• 2 Gearcase Drain Seals 8M0204693

Mercury component numbers can change through factory supersession.

Part Details

• Part number: 8M0120657
• Brand: Mercury Marine / Quicksilver
• Official product type: 100-hour maintenance kit
• Engine family: L6 Verado EFI four-stroke
• Serial range: 2B144123 and up
• GTIN / UPC: 745061004580

Service Interval

Use this kit at the scheduled 100-hour maintenance interval, or according to the maintenance schedule in your Mercury owner’s or service manual. Engine oil and gear lubricant are not included in the standard kit and must be purchased separately.

Installation Notes

Follow Mercury’s service procedure for oil, fuel-filter, and gearcase maintenance. Inspect removed filters and drain seals for contamination or abnormal wear. Use the correct Mercury-approved engine oil and gear lubricant for your specific engine, then check for leaks and confirm fluid levels before returning the outboard to use.

Technical FAQ

Does this kit include engine oil or gear lube? No, this kit covers the filters and drain seals only; oil and gear lubricant are sold separately.

How do I know if this kit fits my Verado? If you are unsure whether your engine falls within the 2B144123-and-up serial range, confirm against your owner’s manual or a Mercury parts diagram before ordering.

Is this kit compatible with MerCruiser sterndrives? No, this kit is built specifically for L6 Verado outboards.

Parts Desk Insights

Best use case: This kit is best suited to scheduled 100-hour maintenance on L6 Verado EFI four-stroke outboards in the 200400 HP range, bundling the filters and seals that job needs into one order.

Common mistake: The most common mistake is ordering by horsepower alone. Mercury references several serial ranges and Verado generations under similar horsepower listings, so matching the engine serial number first is the safest way to confirm fitment.

Sizing and fitment: Engine oil and gear lubricant are not included in this kit. If you are servicing the gearcase or crankcase, you’ll need to order the correct Mercury-approved fluids separately.