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 Marine Oil Filter Mercury Verado 135-200HP 4-Stroke 35-877767Q01

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.

Regular priceΒ£5.99
/
Tax included.

Sierra 18-7921 Marine Oil Filter

Replaces Mercury 35-877767Q01 | Premium 4-Cycle Protection

The Sierra 18-7921 Oil Filter is a high-efficiency replacement part specifically designed for the demanding conditions of marine environments. Engineered to meet or exceed original equipment (OE) filtration standards, this spin-on filter ensures clean oil delivery to your Mercury or Mariner outboard, protecting internal components from premature wear and corrosion.

RELIABILITY: Features a heavy-wall steel canister and epoxy coating for superior corrosion resistance against salt and moisture.

Key Features

  • βœ” Anti-Drain-Back Valve: Prevents dry starts.
  • βœ” High-Efficiency Media: Traps more contaminants.
  • βœ” Direct Fit: Seamless replacement for Mercury L4 Verado.
  • βœ” Marine-Grade: Epoxy coated for durability.

Technical Specs

Thread Size 24mm x 1.5
Height Approx. 4.0"
Diameter Approx. 3.25"
Valve Type Anti-Drain Back

Compatibility / Fitment Guide

Engine Family HP Range Notes
Mercury Verado L4 135 HP / 150 HP Inline 4-Cylinder (2006-2020)
Mercury Verado L4 175 HP / 200 HP Inline 4-Cylinder (2006-2020)
Mariner 4-Stroke 135 - 200 HP Equivalent Verado models

OEM Cross Reference

Mercury Marine 35-877767Q01, 35-877767K01, 35-896546T
Quicksilver 35-877767Q01
Mallory Marine 9-57821
Fram CH836PL

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part from Sierra (Dometic Marine), manufactured to meet or exceed original equipment (OE) standards for fitment and performance.

How do I know if it is compatible?

We recommend checking the SKU/MPN and Cross Reference list provided above. If your original filter is marked 35-877767Q01 or 35-896546T, this is a guaranteed fit.

Will this fit the 6-cylinder Verado models?

No, this filter (18-7921) is specifically for the Inline 4-cylinder Verado engines. 6-cylinder Verado models typically require Sierra part number 18-7918.

Note: Please verify your original part number against the references above before purchasing. All technical data is sourced from Sierra Marine catalog records for domain 4boats.co.uk.

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

Free delivery for most items over Β£150.

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