How often should I clean my K&N air filter?

The cleaning interval depends on your driving conditions. K&N recommends cleaning the filter when you can see a buildup of dirt and debris on the filter surface. In normal conditions, this is usually every 50,000 miles. Off-road driving will require more frequent cleaning.

What do I need to clean and re-oil my K&N filter?

K&N sells a Recharger Kit that includes both the cleaner and the oil you'll need. The cleaner removes dirt and old oil, and the oil restores the filter's ability to trap contaminants. Always follow the instructions on the cleaning kit for best results.

Does this filter come pre-oiled?

Yes, this K&N air filter comes pre-oiled and ready to install. You don't need to oil it before the initial installation. Just drop it in and you're good to go.

K&N 33-2510 Replacement Air Filter | FORD SIERRA XR4I

Name: K&N Replacement Air Filter FORD SIERRA XR4I
Brand: K&N
SKU: k-n-engineering-k-n-replacement-air-filter-ford-sierra-xr4i-t14-235655
Price: 67.72 USD
Availability: BackOrder

K&N Replacement Air Filter FORD SIERRA XR4I

$67.72

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Washable and reusable air filter. Drop-in replacement for your factory air box.

Key Features

Washable — clean and re-oil for extended use
Reusable — lasts the life of your vehicle
Improved airflow — more air to your engine
Direct replacement — fits in the factory air box

Designed for FORD SIERRA XR4I.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!