What are the delivery charges for orders from the Online Shop?

Charges for shipping are added to the main order. No other charges are attached to orders purchased on the online shop.

Which payment methods are accepted in the Online Shop?

All major Major Nigerian debit and credit cards (ATM Cards) are accepted. Jastev also offer Cash on Delivery for some products.

How long will delivery take?

Delivery takes between 3 to 8 days depending on public holidays, and distance. Jastev also offers same day delivery in Port Harcourt only.

How secure is shopping in the Online Shop? Is my data protected?

We take data security very seriously. Cards and personal data is transferred and saved securely. And we don’t trade or exchange information.

What exactly happens after ordering?

Orders are first confirmed in cases of cash on delivery, they are then processed and packaged for shipping and delivery.

Do I receive an invoice for my order?

Yes. An invoiced is attached to the order package and would be delivered together.

Air Filter Tech and Performance

How will a K&N filter affect my vehicle's fuel economy?

K&N does not make any claims or advertisements regarding fuel economy.

What increase in horsepower should I expect from a K&N replacement filter?

K&N does not complete vehicle performance tests (dynamometer tests) for every application we build a replacement air filter for. We do complete air flow testing for every air filter, and can verify that a K&N air filter will flow air with less restriction than its OEM counterpart.

However, other components of the vehicle’s air intake system (like the air filter housing or tubing) can create air restriction and limit horsepower.

The design of these parts varies among different vehicles and manufacturers, so there is no way to estimate a certain amount of horsepower gain from just replacing an air filter.

The higher air flow and lower restriction will increase performance, but we cannot guarantee a certain/exact amount.

What increase in horsepower should I expect from a K&N air intake system?

Dynamometer tests indicating horsepower and torque increases over the OEM intake system will appear on the “Product Details” page for each of our performance intake systems.

Can a K&N filter give my engine too much air flow?

No, an engine can only draw in a certain volume of air depending on the engine’s bore and stroke, and number of cylinders. A replacement air filter or performance intake system cannot physically increase the volume of air the engine takes in.

What is the micron rating and efficiency of a K&N air filter?

Automotive air filters are not rated by micron size, they are rated by efficiency. K&N tests the filtering ability of our air filters using the ISO 5011 test procedure. In general, most K&N air filters will test between 97% – 99% efficiency. Some air filters have their air filter test data published in the Available Information section of the product details page for that part number.

What are the air filtration requirements for my vehicle?

We are unaware of any vehicle manufacturer having published specific filtration requirements for any of their vehicles.

As per the rights guaranteed under the Magnuson-Moss Warranty Act, consumers are free to use any brand of replacement part in their vehicle, without affecting the vehicle’s warranty.

Having specific filtration requirements would limit consumers’ choices, and would not be viewed favorably by the Federal Trade Commission.

Some air filter companies tout their high filtration levels in the 99th percentile. Doesn't higher filtration mean a better air filter?

Not necessarily. 99% filtration efficiency is certainly a very good achievement.

However, filter efficiency is just one statistic of filter performance which is measured (but is also the statistic most commonly published). 
The other air filter performance statistics measured are: capacity, restriction, and service life.

These other factors reflect the amount of dirt the filter can hold, how easily air can flow through the filter, and how long the filter can be used before servicing.

If one particular brand of filter consistently achieves 99%+ efficiency, it would be interesting to know if they also excel in the other performance areas, or are sacrificing one statistic to help increase another.

Given the fact that vehicle manufacturers do not publish specific filtration requirements for their vehicles, it is not strange that we find major, reputable filter brands offering replacement filters with efficiencies varying between 94% – 99%.

Many K&N filters achieve 98%-99% efficiency, in a product design that offers a longer service life, and much lower restriction than other brands of filters. So, a “better” air filter is really a judgement call, and varies by personal preference.

More airflow means you are letting more dirt through, right?

No, not at all. K&N air filters operate using a much different technology than other types of air filters. Most disposable filters are “barrier filters”.

That is, their filtering media acts as a physical barrier to dust particles, and once a dust particle covers a pore in the media, air can no longer flow through that space.

This principle is called “surface loading”.

K&N air filters are built using a fabric filtering material which absorbs dirt and dust particles instead of physically blocking them. This is a principle called “depth loading”. The pores in the material continue to let air flow through as the filter absorbs dirt in the media.

Air Filter Cleaning and Oiling

How often and how do I need to clean my K&N air filter?

K&N replacement air filters that fit in the factory air box can go up to 50,000 miles before cleaning is required and large conical filters on a K&N air intake system can go up to 100,000 miles before needing to be cleaned, depending on your driving conditions.

If your K&N air filter is used in dusty or off-road environments, they will require cleaning more often. We recommend that you visually inspect your air filter once every 25,000 miles to determine if the screen is still visible.

How much oil should I use to re-oil my filter after it is cleaned?

When using the air filter oil squeeze bottle found in K&N filter cleaning kit 99-5050, apply K&N air filter oil evenly along the crown of each pleat. Allow the oil to wick for approximately 20 minutes then touch up any light areas on either side of filter until there is a uniform red color at all areas.

K&N offers 1/2 ounce pillow pack air filter oil for the smaller jobs and one gallon jug air filter oil for bigger jobs. Individuals who require a large supply of oil on hand, K&N also offers5 gallon pails of air filter oil.

Can I use anything other than K&N cleaner and oil?

We do not recommend using other detergents or solvents to clean your air filter, or other types of oil. Products other than those manufactured by K&N have not been tested and may deteriorate the performance and filtering ability of your air filter.

Can I use compressed air to dry the filter faster?

Never use compressed air to dry your air filter. Compressed air will rip and tear the fibers that make up the filtering material. Always allow the filter to dry naturally.

Can I use a brush to help dislodge dirt on my filter before cleaning?

Never use a brush to dislodge dirt particles on your air filter. The bristles from a brush can rip and tear the filtering material on your air filter.

K&N Power Kleenand K&N Synthetic Air Filter Cleaner are powerful degreasing detergents and will loosen even the toughest, most stubborn dirt particles with no scrubbing necessary.