K&N 1 Gallon Heavy Duty DryFlow Cleaner

SKU: 99-0638 | UPC: 024844277756

K&N 99-0638 Heavy Duty Filter Cleaner DryFlow 1 Gallon

K&N 99-0638 delivers 1 gallon of heavy duty air filter cleaner designed exclusively for K&N commercial grade DryFlow filters on class 6-8 over-the-road trucks agricultural equipment earth moving machines and diesel motor homes. This formula dissolves stubborn dirt grime and old filter oil to restore filters to like-new condition. Rinse easily with a hose or pressure washer for extended filter life and peak engine airflow.

Key Features

• 1 Gallon Capacity: Large volume handles multiple heavy duty filter cleanings with enough cleaner for thorough coverage
• Dirt Dissolving Action: Breaks down heavy buildup and trapped debris in hybrid filter media for complete removal
• Oil Removal: Strips away old filter oil residue ensuring fresh recharge application
• High Performance Degreaser: Tackles grease and contaminants common in diesel truck and off-road environments
• Water Rinse Formula: Cleans fully with plain water no residue left behind for immediate reuse

Product Notes

• Use only on K&N heavy duty DryFlow air filters avoid standard oiled filters
• Store in cool dry place shake well before use
• Hazardous material ships ground only no air express

Installation Notes

• Professional installation recommended.
• Spray liberally on filter let soak 10 minutes agitate with brush then rinse
• Compatible with all K&N heavy duty filter part numbers dry completely before reoiling

This Part Fits

Year	Make	Model	Submodel
All	Class 6-8 Trucks	Over-the-Road	Turbo Diesel
All	Agricultural	Tractors	Earth Moving
All	Construction	Equipment	–
All	Motor Homes	Diesel	–

Why Choose K&N?

• Over 60 years engineering air filters for diesel trucks and heavy equipment
• Restores airflow to factory levels extending filter service intervals
• Backed by K&N one million mile limited warranty on compatible filters

Frequently Asked Questions

• Q: Which K&N filters does 99-0638 clean?
  A: Formulated for all K&N heavy duty DryFlow air filters including those on Freightliner Cascadia Kenworth T680 Peterbilt 389 International trucks and ag machinery
• Q: Is this cleaner safe for my filter media?
  A: Yes specially made for K&N hybrid synthetic media will not damage cotton gauze or wire mesh components
• Q: How often should I clean my HD filter?
  A: Clean every 50000 miles or when restriction gauge hits 20 inches water based on operating conditions

Shipping &amp. Handling

• Method: Ground shipping only due to liquid contents
• Availability: In stock – ships same or next business day
• Packaging: 11 x 6 x 6 inches sturdy jug in carton
• Weight: 9.68 lbs