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Air Filter – Fits Mercury Verado 200-300 HP L6 Outboards (Replaces 35-893318T02, 893318T02, 18-7998)

Regular price $34.99

Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This high-performance Air Filter – Fits Mercury Verado 200-300 HP L6 Outboards is designed for Mercury 200-300 HP, L6 4-Stroke Verado outboard engines, ensuring your motor breathes clean air for optimal power and efficiency. It serves as a direct-fit replacement, matching OEM specifications for a seamless installation.

It directly replaces Mercury part numbers 35-893318T02 and 893318T02, and is interchangeable with Sierra 18-7998.

  • Engineered for direct-fit installation in the factory air intake assembly.
  • Constructed with a durable, formed flexible composite housing.
  • Features a foam-covered filter screen to capture airborne contaminants effectively.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Mercury 35-893318T02
Mercury 893318T02
Sierra 18-7998

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This air filter is designed for a range of Mercury Verado L6 four-stroke outboards from 200 to 400 HP. Please verify your engine's serial number against the ranges listed below to ensure an exact match.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury 200 PRO VERADO (6 CYL.) 200 4-Stroke 2B034840-2B144122 35-893318T02
Mercury 200 PRO VERADO (6 CYL.) 200 4-Stroke 2B144123 & Up 35-893318T02
Mercury 200 VERADO (6 CYL.) 200 4-Stroke 0P520553-2B144122 35-893318T02
Mercury 200 VERADO (6 CYL.) 200 4-Stroke 1B517434-2B144122 35-893318T02
Mercury 200 VERADO (6 CYL.) 200 4-Stroke 2B144123 & Up 35-893318T02
Mercury 225 VERADO (6 CYL.) 225 4-Stroke 0P520553-2B144122 35-893318T02
Mercury 225 VERADO (6 CYL.) 225 4-Stroke 1B517434-2B144122 35-893318T02
Mercury 225 VERADO (6 CYL.) 225 4-Stroke 2B144123 & Up 35-893318T02
Mercury 250 PRO VERADO (6 CYL.) 250 4-Stroke 1B830170-2B144122 35-893318T02
Mercury 250 PRO VERADO (6 CYL.) 250 4-Stroke 2B144123 & Up 35-893318T02
Mercury 250 VERADO (6 CYL.) 250 4-Stroke 0P520553-2B144122 35-893318T02
Mercury 250 VERADO (6 CYL.) 250 4-Stroke 1B517434-2B144122 35-893318T02
Mercury 250 VERADO (6 CYL.) 250 4-Stroke 2B144123 & Up 35-893318T02
Mercury 275 VERADO (6 CYL.) 275 4-Stroke 0P520553-2B144122 35-893318T02
Mercury 275 VERADO (6 CYL.) 275 4-Stroke 1B517434-2B144122 35-893318T02
Mercury 275 VERADO (6 CYL.) 275 4-Stroke 2B144123 & Up 35-893318T02
Mercury 300 PRO VERADO (6 CYL.) 300 4-Stroke 1B830170-2B144122 35-893318T02
Mercury 300 PRO VERADO (6 CYL.) 300 4-Stroke 2B144123 & Up 35-893318T02
Mercury 300 VERADO (6 CYL.) 300 4-Stroke 0P520553-2B144122 35-893318T02
Mercury 300 VERADO (6 CYL.) 300 4-Stroke 1B517434-2B144122 35-893318T02
Mercury 300 VERADO (6 CYL.) 300 4-Stroke 2B144123 & Up 35-893318T02
Mercury Verado L6 200-400 & 400R HP 200-400 4-Stroke 2B144123 & above 35-893318T02 100 Hour Service Interval Kit

Technical Specs

Product Type
Air Filter
Installation
Direct Fit
Connection
Direct to Air Intake Assembly
Housing Material
Formed flexible composite with foam covered filter screen
Dimensions
Length: 157.5 mm (6.20 in), Width: 157.5 mm (6.20 in), Height: 231.1 mm (9.10 in)
Weight
0.41 kg (0.90 lb)
Fitting Type
Direct connection to air intake
Warranty
1 year factory warranty against defects and workmanship

What’s in the Box

  • 1 x FILTER, Air (35-893318T02)

Installation Notes

  1. Ensure the engine is off and the kill switch lanyard is disconnected. Allow the engine to cool completely before starting.
  2. Remove the top engine cowl to access the powerhead.
  3. Locate the air filter assembly housing, which is typically secured by clips or screws.
  4. Carefully release the clips or remove the screws to open the housing cover.
  5. Remove the old air filter element, taking note of its orientation and how it is seated.
  6. Wipe the inside of the air filter housing with a clean, lint-free cloth to remove any dust or debris.
  7. Insert the new air filter into the housing, making sure it is seated properly and securely.
  8. Reattach the housing cover and fasten the clips or screws. Do not overtighten.
  9. Reinstall the main engine cowl, ensuring it locks firmly back into place.

Troubleshooting & FAQ

Is this a genuine OEM part?

This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials for fit, form, and function. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for consistency.

How do I know if this air filter fits my engine?

Fitment for Mercury Verado engines is primarily determined by the engine's serial number, not just its model year. Please find your serial number on the engine and compare it with the ranges listed in the 'Engine & Model Compatibility' table to ensure a perfect match.

What are signs of a clogged air filter?

A dirty air filter restricts airflow, which can cause reduced performance, poor acceleration, increased fuel consumption, and rough idling. If you notice these symptoms, it's a good idea to inspect your air filter.

What is the recommended replacement interval?

This filter is often replaced as part of the 100-hour service schedule on Mercury Verado L6 engines. However, if you frequently operate in saltwater or dusty conditions, you may need to inspect and replace it more often. Always check your owner's manual for specific recommendations.

Do I need special tools for installation?

No special tools are required. Installation can typically be done with basic hand tools, such as a screwdriver or a socket set, to remove the engine cowl and filter housing cover.

How fast is shipping and what does it cost?

We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

What is the warranty and return policy?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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