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The K&N 99-0638 Heavy Duty Air Filter Cleaner is a specialized cleaning solution designed to restore large industrial and automotive air filters to like-new condition. This 1-gallon container is ideal for cleaning heavy-duty filters used in turbo diesel engines, over-the-road trucks, agricultural machinery, earth-moving equipment, and diesel motor homes. Its advanced formula effectively dissolves accumulated dirt, grime, and debris trapped within the hybrid filter material, ensuring optimal airflow and engine performance. The cleaner is recommended exclusively for heavy-duty commercial-grade filters, making it an essential part of maintaining high-performance filtration systems.
Applying the K&N Heavy Duty Air Filter Cleaner is straightforward. After spraying the cleaner onto the filter, it penetrates and breaks down stubborn dirt and grime. Once the dirt has loosened, the filter can be rinsed thoroughly with a hose or pressure washer, leaving it clean and ready for reuse. This process not only extends the life of your filters but also helps maintain maximum filtration efficiency, ultimately contributing to engine longevity and performance.
The product complies with Prop 65 requirements, ensuring safety and environmental standards are met. As a non-CARB approved product, it is suitable for use in various regions, but users should always follow proper handling and disposal procedures. The 99-0638 cleaner is a vital component for fleet maintenance professionals and industrial operators seeking a reliable solution for heavy-duty air filter cleaning. Proper maintenance with this cleaner helps ensure your heavy-duty filters perform at their best, maintaining engine efficiency and protecting vital components from harmful contaminants.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
