• Fast shipping

  • Free help & advice

  • Hassle-free returns

  • Factory direct prices

Welcome Aboard!

FLASHSALE26

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

Regular price $34.99

Worry-free returns

Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


Tracking information will be provided once your order ships.

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 replacement Air Filter – Fits Mercury Verado 200-300 HP L6 Outboards (Replaces 35-893318T02, 893318T02) is engineered to protect your engine's intake system from airborne contaminants. It is designed for a direct fit on Mercury and Mariner 200–300 HP L6 Verado 4-Stroke outboards from model years 2005 to present, ensuring optimal air-to-fuel ratios for efficient combustion.

This part serves as a direct replacement for Mercury part numbers 35-893318T02 and Sierra 18-7998.

  • Installs directly into the factory air intake assembly with no modifications required.
  • Constructed from a formed flexible composite with a foam-covered filter screen to ensure proper filtration.
  • Designed to allow the exacting amount of filtered air required for the most efficient performance and fuel consumption.

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.

For Mercury and Mariner models, verify your engine's serial number range to ensure an exact match.

Brand Model Rated HP Stroke Years OEM Part No. Notes
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 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 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 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 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 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 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 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 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: 26.0 in (660.4 mm), Width: 15.0 in (381 mm), Height: 11.5 in (292.1 mm)
Weight
0.41 kg (0.90 lb)
Fitting Type
Direct connection to air intake
Warranty
1 year factory warranty against defects and workmanship
Other Technical Attributes
Designed to allow exacting amount of filtered air for most efficient fuel consumption and combustion

What’s in the Box

  • 1 x FILTER, Air (35-893318T02)

Installation Notes

  1. Ensure the engine is off and has cooled down completely.
  2. Remove the top cowl of your Mercury Verado outboard to access the engine.
  3. Locate the air filter housing. It is typically a prominent black plastic assembly on the top or side of the engine.
  4. Carefully unclip or unscrew the housing cover to expose the old air filter.
  5. Remove the old filter element. Note its orientation before removal.
  6. Wipe the inside of the housing with a clean, lint-free cloth to remove any dust or debris.
  7. Insert the new air filter, ensuring it is seated correctly and securely within the housing.
  8. Replace the housing cover and secure the clips or screws. Do not overtighten.
  9. Reinstall the engine cowl, making sure it locks into place.

Troubleshooting & FAQ

How do I know if this air filter fits my Mercury Verado?

This filter is designed for L6 Verado 200–300 HP models from 2005 to present. The best way to confirm is by matching your engine's serial number or original part number (35-893318T02) to the compatibility table on this page.

What are the signs of a failing or clogged air filter?

Common symptoms include a noticeable drop in engine performance, decreased fuel economy, increased engine smoke, or difficulty starting. A visual inspection may show excessive dirt or debris on the filter media.

How often should I replace the air filter?

For most recreational boaters, replacing the air filter every 100 hours of operation or annually is recommended, whichever comes first. Refer to your Mercury service manual for the specific interval for your engine and operating conditions.

Can I clean and reuse this filter?

No, this filter is designed for single-use and should be replaced when dirty. Attempting to clean it can damage the filter media and allow harmful contaminants into your engine.

Is this a genuine Mercury part?

No, this is an aftermarket part designed to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function. It offers a reliable alternative to the genuine Mercury 35-893318T02 part.

What is OEM vs. Aftermarket?

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

What are shipping speed & cost?

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

What is the warranty & return policy?

This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. See our full 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.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.