Jeep Grand Cherokee 3.0L / 3.7L / 4.7L / 6.1L DSL / GAS 2009, Pro GUARD 7 Air Filter by aFe®. When protecting your valuable engine is your primary concern, you need the Pro GUARD 7 air filter. It has the highest level of filtration efficiency of any air filter on the market – 99.7%. It was developed to provide the increased airflow and maximum protection today's expensive diesel engines need. The Pro GUARD 7 filter is perfect for all driving conditions, but it particularly excels during the harshest, most extreme, driving conditions.
- Highest level of filtration efficiency of any air filter
- Increases airflow over stock paper air filter
- Patented 7-layer progressive cotton/synthetic filter media
- 30% deeper pleats than comparable aftermarket filters
- Polyurethane construction withstands extreme engine temperatures
- Washable and reusable
- Extended service intervals
- Backed by a limited warranty
- Proudly made in the USA
Modern diesel engines are marvels of technology, able to make gobs of power while delivering exceptional fuel mileage and meeting all emissions standards. But all that mechanical and electronic sophistication costs a lot of money. So don't trust your expensive engine to just any air filter, get your diesel a Pro GUARD 7. The Pro GUARD 7 air filter was developed specifically for today's demanding diesel engines; it delivers the increased airflow they need while providing maximum protection.
The patented 7-layer progressive cotton/synthetic media in the Pro GUARD 7 consists of 5 layers of progressively finer medical grade cotton gauze, combined with 2 layers of non-woven synthetic polyester fabric with random porosity. Competitors use constant size mesh gauze in their filters, which creates voids/openings that can allow dirt to pass through. As the progressively finer layers of gauze are stacked in the Pro GUARD 7, the randomness of the openings increase, minimizing spaces with no filter media. Dust accumulates on multiple layers, increasing overall dust holding capacity and filtration efficiency.
The pleats in the Pro GUARD 7 are evenly spaced for greater dust holding capacity and the tips are rounded for better airflow. They're also 30% deeper than the pleats in comparable aftermarket air filters for longer service intervals and greater dust holding capacity. The end result is airflow that is increased over the factory paper element and the highest level of filtration efficiency available – 99.7%.
The sealing surface and supporting structure of the Pro GUARD 7 are made from 100% polyurethane, to withstand extreme engine temperatures. Select filters feature built-in expanded metal to prevent collapse under high boost pressures. Flat panel filters are constructed with 4 sides, not just 2, for added rigidity and seal support, and feature a progressive bump seal to ensure an airtight seal.
The Pro GUARD 7 isn't only more efficient, it's also more economical. Under normal driving conditions it won't need servicing for 45,000 miles. Since a typical OEM paper element should be replaced every 15,000 miles, the Pro GUARD 7 will pay for itself before the first service is required. And the Pro GUARD 7 can be washed and reused repeatedly, so you'll never have to buy another air filter, ever.
Direct factory replacement Pro GUARD 7 air filters are backed by a limited lifetime warranty. Universal clamp on filters have a 2-year warranty while racing filters have a 1-year warranty.
aFe® (Advanced Flow Engineering, Inc.) manufactures performance products for late model cars, light trucks and SUVs. The company was founded in 1999 with an initial concentration on high performance air filters. Since then, the company product line has broadened to include cold air intakes, fluid filters, exhaust systems, intake manifolds, intercoolers, programmers, differential covers, transmission pans and throttle body spacers. The team of engineers, machinists, production and sales people at aFe® have many years of experience in their respective positions, and together work to ensure they produce the best automotive products on the market.
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