K&N 23-25 BMW 520i Replacement Air Filter

Shop our extensive catalog of Cold Air Intakes and Air Filters.

K&N AIR INTAKES, THE ULTIMATE WEAPON IN THE HORSEPOWER WARS Most of our High-Flow Air Intakes can be purchased for less than $350. On the 2003 Ford Mustang SVT®, we actually achieved a 30 horsepower increase. Even our typical air intake gains are in the range of 8 to 16 horsepower. To send an average V-8 down the road at 55 mph, it takes about 17 horsepower. Considering this, you begin to realize just how much of a difference our intakes can make when you step on the gas. We’re proud of these intakes because after you bolt one on, you’ll know something’s different…VERY DIFFERENT!

GET THE MOST OUT OF YOUR CAR OR TRUCK Most people are aware that our High-Flow Air Filter can increase horsepower over a traditional disposable air filter. An air filter change alone however, cannot eliminate other types of air restriction built into the vehicle at the factory. These can be found in the size of the air box and the air path running from the air box to the engine. That’s where air intakes rule the road. They completely replace the factory airflow assembly including the filter, air box and air path. More and more people are discovering the monster power available from a well-engineered air intake and we sell over 200,000 air intakes every year, so go ahead and wake the sleeping giant in your car.

GUARANTEED HORSEPOWER We will not sell an air intake that does not provide a measured increase in horsepower and torque (acceleration). Our air intakes are proven to increase horsepower and torque on a rear-wheel dynamometer (think treadmill for cars). These thoroughly engineered air intakes provide huge increases in power that a customer will definitely feel when they accelerate.

Product lines include: K&N Fuel Injection Kits, FIPK, K&N 77 Series High Flow Air Intakes, K&N Typhoon Air Intake Systems, K&N AirCharger, K&N 57i Air Induction Kits, K&N Cold Air Intake Filters, and Stock Replacement Air Filters.

Back as far as 1969 K&N ENGINEERING has been in the business of perfecting automobile filters and, in fact, they were the inventors of the high flow cotton air filer and they have been working ever since then to improve your car’s filter with a dedication to perfection of product and customer satisfaction. In the K&N facility in Riverside, California, they go about the task of researching and developing air filters and air intake systems and now have a potpourri of more than 5,000 products bearing their logo and; furthermore, the inimitable K & N products can be found in more than thirty countries around the world. There is a reason K & N assure you of their quality with a million mile warranty and the reason is their belief in the excellence of their product and because of their place in the aftermarket performance industry as the world’s foremost manufacturer of washable performance air filters and air intake systems.

If you need more power, consider the gains that can be achieved by installing a K&N intake kit on your car and weigh that against the cost of this relatively inexpensive modification and I think you will agree that it is worth it for the resultant improvement in your car’s performance. And you don’t need to worry that a new K&N intake kit will give your car’s engine too much air because every engine is designed to draw in only a particular volume of air and this depends on your car’s bore, stoke and cylinders so this is not a problem. Consider K & N’s history of success and its unparalleled place in the annals of aftermarket performance air filters and air intake systems when deciding on a new air filter or, better yet, a new and improved air intake system and then peruse the multiplicity of products available on the LMPERFORMANCE web site and find the one that will make a difference in your vehicle the minute it is installed. Take advantage of the more than fifty years of experience K & N has and use it to your benefit and let LMPERFORMANCE help you get the right part at the right price.

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California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov

California Residents: TIRE WARNING: LMPerformance will not ship Tires to California.

Legal: Some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. Buyer takes all responsibility to ensure that any modifications or upgrades that have done conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. LMPerformance is not responsible for buyer not complying with Federal, State, Province, and/or Local laws, ordinances, and regulations. This policy shall be in force for all past, current, and future purchases from LMPerformance, Inc. LMPerformance will not ship ANY non-CARB compliant products to California where California requires products to be CARB certified such as Catalytic Converters and Induction Kits.

Free Shipping: Please note FREE Shipping refers to shipping within the contiguous continental US only. All other locations extra. Some items that require Truck Freight Delivery will require a Truck Freight surcharge. This surcharge is still a discounted shipping amount that is lower then the actual truck freight shipping charge that is charged to LMP. LMP will try to still give the lowest price possible for truck freight items.

Images: Images may be a representation and may not reflect the actual product. Examples would be SPEC stage 3 clutch kits which all use the same photo.

TYPOS: LMPerformance tries to present the best most accurate information on our website. Sometimes we get mistakes in product information sent from vendors such as typos. We can not be responsible for these typos, if you see something that does not look right please let us know before ordering so we can double check for you first. LMPerformance will not pay for typos in any way, monetarily or otherwise.

Price Errors: In the event that a product has mistakenly been listed at an incorrect price, We reserve the right to refuse or cancel any orders placed for product listed at the incorrect price. We reserve the right to refuse or cancel any such orders whether or not the order has been confirmed and your account charged. If your payment type has already been charged for the purchase and your order is cancelled, a full refund to your orignial payment method in the amount of the incorrect price will be issued.

Special Order ITEMS: Some items are Special Ordered and may not be returnable, or even cancellable as they are going into production specifically because you ordered them. Special Ordered items can have a 5-35% cancelation fee.

Cancellations: Instock orders cannot be canceled due to our automated ordering & fast shipping system. To keep our prices low, all cancelations are subject to a 5% cancelation fee to cover transaction processing fees. We reserve the right to charge up to a 10% cancellation fee for cancelled orders due to merchant fees, Special Order fees and the cost of processing and shipping orders.When you request a cancellation of an order or a part, please note that it may take time for a manufacturer to cancel an order if the order is drop-shipped. We also have to confirm that the product has not shipped. If the product has shipped then this must be processed as a return.Also note that sometimes products ship more quickly than expected, so we recommend that you do not purchase alternative products until receiving final confirmation of the cancellation.

Returns: We cannot accept returns on parts that have been used or installed. No returns will be accepted after 30 days. All Returns must be in original packaging. Prior authorization must be given before any return can be made. Up to a 25% Restocking Fee may apply. Special Orders may be subject to Additional Manufacturer Restock Fees as well. Shipping cost will not be refunded.Hoods as well as PCM Programmers may not be returned unless defective and only for replacement. ALL returns must be first filed using our online form found here: https://www.lmperformance.com/returns.

Lost Order Claims All lost order/package claims must be made within 5 days of the shipping date or tracking information delivery date. All claimes made after this date will not be accepted due to Shipping companies policies of filing loss claims.

Damaged Items or Incorrect Items: Please contact us right away if your item has been damaged in shipping or are incorrect. Please note that we will ship replacement items the same method of shipping the order was originally placed for. LMPerformance can not ship packages overnight at our cost if the original shipping was not also overnight. Claims must be filed in order for replacement parts to be shipped.

Warranties:Any warranty claims must be placed with the manufacturer. All of the products sold by LMPerformance, regardless of the manufacturer, are designed for Racing and Performance applications. Many of our manufacturers offer NO WARRANTY on their products, either stated or implied, due to the unusual stresses placed on the parts and because we have no control over how they are installed and used. Many of these products are designed for off-road use only and are not legal for use on public highways. If you have a question about the warranty on a specific product, please e-mail or call us. Buyer assumes all risk and liability associated with these products.

Installation: We are not responsible for or any costs associated with the installation or the improper installation of any products. Purchaser assumes the risk associated with the installation of products. We, along with the manufacturer of each product are not responsible for any direct or indirect damage to the vehicle, personal, or costs incurred from the use of products.