Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats
Sierra 18-7921 Oil Filter for Mercury Marine Outboard Engines 35-877767Q01 - 4Boats

Sierra 18-7921 Oil Filter - Mercury 35-877767Q01 | 4Boats

18-7921

  • Dispatched in 2-3 days
  • 30 Day Return Policy
  • Low stock - 5 items left
  • Backordered, shipping soon
Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.
£5.99
/
Tax included.

Sierra 18-7921 is an OEM-equivalent, marine‑grade full-flow spin‑on oil filter engineered for Mercury Verado and other 4‑stroke outboards.

  • Superior filtration: removes contaminants for smooth, efficient engine operation.
  • Robust construction: marine‑grade materials resist heat, vibration and saltwater exposure.
  • OEM-equivalent design: direct fit for Mercury 35-877767K01, 35-877767Q01, 35-896546T and related numbers.
  • Engine longevity: preserves oil purity to reduce wear on vital components.
  • Ideal for high-performance use: optimised for Mercury Verado 4‑stroke engines and other 75-200 HP models.
  • Full-flow spin-on oil filter; weight approx. 90.7 g (3.2 oz); condition: 100% new.
  • Compatibility: Mercury 75-115 HP S/N 1B366823+ (2006+); Verado 135-200 HP 4‑stroke (all years).

Fit like the original - lightly lubricate the gasket, hand-tighten the filter, start the engine and check for leaks; replace at every oil change to maintain peak performance.

For the products under £150 the shipping is £6.99.

Free delivery for the most items over £150.

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