Air Filter – Fits Mercury Mariner Outboard 2.5L DFI 115-225 HP (Replaces 35-853333T, 18-7997)

Vendor: JLM Marine
Availability: In Stock
Product Type: Air Filter
$8.99
$8.99
Subtotal: $8.99

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Air Filter – Fits Mercury Mariner Outboard 2.5L DFI 115-225 HP (Replaces 35-853333T, 18-7997)

Air Filter – Fits Mercury Mariner Outboard 2.5L DFI 115-225 HP (Replaces 35-853333T, 18-7997)

$8.99

Air Filter – Fits Mercury Mariner Outboard 2.5L DFI 115-225 HP (Replaces 35-853333T, 18-7997)

$8.99

Air Filter – Fits Mercury Mariner Outboard 2.5L DFI 115-225 HP (Replaces 35-853333T, 18-7997)

This high-quality aftermarket air filter is designed to fit Mercury Mariner 2.5L DFI V6 OptiMax outboard engines, covering a range from 115 to 225 HP, primarily mid-2000s models. It serves as a direct replacement component, ensuring your engine receives clean air for optimal performance and longevity.

Engineered to meet or exceed OEM specifications, this air filter is a reliable alternative to original parts, protecting your engine's sensitive Direct Fuel Injection (DFI) system from harmful airborne contaminants.

  • Installation Type: Simple drop-in replacement that fits directly into the factory air box.
  • Engine Compatibility: Specifically designed for 2-stroke DFI outboard engines.
  • Direct Replacement: Replaces multiple OEM and aftermarket part numbers for broad application.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Mercury Marine 35-853333T
Mercury Marine 35-853333
Sierra 18-7997
Race-Guy Air Filter
XLJOY Air Filter
JHENSH Air Filter

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Brand Model Rated HP Stroke OEM Part No. Notes
Mercury OptiMax 2.5L DFI 115 2-Stroke 35-853333T V6 engine
Mercury OptiMax 2.5L DFI 135 2-Stroke 35-853333T V6 engine
Mercury OptiMax 2.5L DFI 150 2-Stroke 35-853333T V6 engine
Mercury OptiMax 2.5L DFI 175 2-Stroke 35-853333T V6 engine
Mercury OptiMax 2.5L DFI 200 2-Stroke 35-853333T V6 engine
Mercury OptiMax 2.5L DFI 225 2-Stroke 35-853333T V6 engine
Mercury SportJet 200DFI 200 2-Stroke 35-853333T As noted by HIFROM

Technical Specifications

Specification Value
Product Type Air Filter
Installation Direct replacement
Fuel Type Gasoline
Connection Direct fit to air box
Housing Color White
Fitting Type Drop-in replacement
Warranty Varies by manufacturer
Other Technical Attributes For DFI (Direct Fuel Injection) engines

Package Contents

Package contents may vary depending on the selected manufacturer option.

  • Standard Package: 1 x Air Filter (Replaces 35-853333T)
  • Race-Guy Package Includes: 1 x Air Filter, 1 x Key Chain
  • XLJOY Package Includes: 2 x Air Filters (Replaces 35-853333T)

Explosion Diagram

Explosion Diagram

Installation Guide

  1. Safety First: Ensure the engine is completely turned off and has had time to cool down.
  2. Locate Air Filter Housing: Find the air filter cover on the engine.
  3. Remove Cover: Unfasten any clips or screws securing the housing cover and remove it.
  4. Remove Old Filter: Take out the old air filter. Note its orientation for correct placement of the new one.
  5. Clean Housing: Wipe away any dust or debris from inside the air filter housing.
  6. Install New Filter: Insert the new air filter, making sure it sits securely and creates a proper seal.
  7. Secure Cover: Re-attach the housing cover and fasten it tightly.

Troubleshooting & FAQ

How do I confirm this filter fits my specific engine?
Start by checking your existing part for a number and matching it to our cross-reference list (e.g., 35-853333T or Sierra 18-7997). Then, verify your engine model and HP rating against the "Compatible Engine Models" table. This filter is for Mercury 2.5L DFI OptiMax engines from 115-225 HP.

What are the signs that my air filter needs to be replaced?
A dirty or clogged air filter can cause reduced engine performance, poor acceleration, and increased fuel consumption. A visual inspection showing excessive dirt, moisture, or physical damage is a clear indicator for replacement.

How often should I replace the air filter?
Replacement frequency depends on your operating environment. For engines used in dusty or debris-heavy conditions, more frequent checks are needed. We recommend inspecting the air filter as part of your regular maintenance schedule and replacing it at least once per season or when it appears dirty.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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