K&P Engineering Reusable Oil Filters- starting at

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Product Details

100% designed and manufactured in the USA!

Setting the industry standard with technological advancements and product design Cleanable/reusable filter engineering, manufacturing and testing since 1995. Technical and sales support available directly from the factory. Filter media testing available. Sonic cleaning services available.

Don’t settle for anything less than a “genuine K&P Engineering filter.

High Performance Stainless Steel Micronic Oil Filters

  • Unmatched Flow Rate- Allows oil to get where it needs to go quicker.
  • All metal construction conducts heat away from and cools oil.
  • Superior Filtration- Absolute rating to 35 micron!
  • Magnetic Pre-filtering
  • Easy Filter Element Inspection
  • Unaffected by Water, Heat & Pressure
  • Environmentally Friendly
  • Meets/exceeds manufacturers specifications
  • US Manufactured !

Price, for your 2014 or newer Indian® Motorcycle; $139.00 - $203.00 (depending on finish and cut). Please shoot us an email for a quick price quote to: jethrosparts@gmail.com

Technical Info:

Questions on filtration?

Allow us to offer this primer on filtration.

Filter media has a range of particle sizes that it will remove. The smallest particle size it can catch is usually referred to the “nominal” size. The largest particle size it lets through is referred to as the “Absolute” size. The sizes between those two are usually expressed as a Beta Ratio, or percentage of efficiency. In other words, if you introduce 100 particles of the 15 micron size and 60 of them get caught, you have a percentage of efficiency of 60. It is interesting to note that some companies are very liberal with their advertised Absolute numbers.

There are many different test procedures that can be used to test the particulates a filter media will remove. Single pass, Multiple pass, SAE, ASTM, and even European specific tests. What gets difficult is how to compare the numbers used for marketing filters. Picture yourself standing in the auto parts store in front of a rack of filters trying to decide which filter is “best”. You see a 22 micron filter with some sort of efficiency rating attached to it (for example 94% efficiency) and another with a 15 micron number printed on the box with no efficiency rating. And then you see one that has printed on it that the filter will catch down to 5 microns. There is no way to accurately compare those numbers. From a marketing standpoint it is better to print lower numbers since most consumers don’t have a clue about efficiency ratings, and there is more of a chance of the customer purchasing the lower number filter. Problem is the “5 micron” filter may be letting more particles through the filter than the one that has 22 microns printed on it. A good example of this is the Harley Davidson Twin Cam filter. On the box it says it will filter down to 5 microns. When tested at the lab it actually passes 40 micron particles. Before you condemn the filter, I would note that it pretty much tied with the Dodge Cummins diesel filter as the tightest OEM filters tested. As an fyi, most paper filters range from 50 to 90 microns as their absolute number. Ours is 35 (and yes, we can catch 5 micron particles as well).

We use the ASTM test because it offers the smallest amount of manipulation of the testing process. We test for worst case, or absolute numbers, partially to be able to compare apples to apples between filters, and partially because of FAA testing.

As filter media gets tighter, the flow rate gets slower and the resistance to flow increases. This resistance is referred to as differential pressure (the difference in pressure between the outside and inside of the filter element). As the differential pressure increases, the pressure against the bypass valve increases and the chance of the bypass opening increases.

K&P Engineering focuses on maximizing flow rates while meeting or exceeding OEM filtration. Not all stainless steel filter cloth is created equal. We specify the wire diameter, thread count each direction and the type of weave to use to create our filter cloth which is how we meet the filtration and flow goals. We can get between 5 and 7 quarts of oil through our filter element in the time it takes to get 1 quart through an OEM filter element while still meeting or exceeding OEM filtration. The reason for this is that paper and synthetic filter media is made of fibers that are pressed or glued together and require a certain thickness to get to the filtration objective. This type of media inherently has more flow restriction that the filter cloth that K&P Engineering uses. We tested a pro stock engine on the dyno with a gage on both sides of the filter cavity. At wide open throttle we measured 20 lbs of differential pressure on the paper filter (0w at 180 degrees). The K&P Engineering filter measured less than 1 lb. This means the bypass on the paper filter is open letting unfiltered oil through the filter and into the engine. Ours has a lot further to go before it opens. The result is more filtered oil getting to the engine, and getting there faster. The reduction in differential pressure also results in less backpressure against the oil pump which has the potential to improve performance and or fuel mileage.

Some will argue for a very tight filter media, and concentrate on the smallest particles a filter will catch (even though it might be a nominal number). An analogy we use is to think about the towel you are about to dry your freshly washed new car with. Are you more concerned about the dust that has settled on the towel, or the rock that is in the towel left over from when the towel was dropped. It also becomes a moot point on how tight the filter media is if the bypass is open and the debris is flowing right past the filter media. Some filter companies argue that they are ok with the bypass being open because the debris will eventually get caught as the oil seeps through the media and the oil will get to a cleaner level at some point in time. Our concern is what damage is being done while that debris is passing through the engine over and over again waiting to get caught in the filter media. We have customers that do want to get to that finer level of cleanliness, and they usually go with a bypass filter setup. They use our filter as primary filter, and a very tight filter on the bypass circuit. That way the oil is cleaned to OEM levels with our filter, and as it dribbles through the tighter media of the bypass it will get even cleaner.

The stainless steel filter cloth technology has been around a very long time. It is used in military aircraft (fighter jets, helicopters) and even used for filtering blood. K&P Engineering filters are approved by the FAA for aircraft use, and have just recently been approved by the European equivalent of the FAA (EASA) for use on aircraft in Europe. We are consistently monitored for quality assurance as a part of these approvals.

Having said all this, K&P Engineering appreciates the people that question the quality provided by different filters. There are some cheaper counterfeits of our filter out there that use the K&P Engineering information and numbers to promote themselves. When we sent the media of those knock off screen filters out for testing at the lab, they came back as filtering worse than the worst paper filters we have tested. It is kind of like the Harbor Freight versions of Snap On tools.

K&P Engineering
www.KandPEngineering.com

FAQ’s

1) Where is the K&P Engineering filter made?

Proudly designed, engineered, sourced and manufactured in the USA. Make sure you receive a genuine K&P Engineering product.

2) Has this type of filtration technology been proven?

This type of filtration has been in use for many many years and has proven itself in NASCAR, Formula One, the Military and in the Aerospace industry. We have been inventing, designing engineering and manufacturing oil filters using this proven technology since 1995. K&P Engineering also manufactures oil filters that are FAA approved for certified aircraft.

3) What kind of materials are used in the K&P Engineering oil filters?

The filter housing and filter element end caps are carved out of a solid chunk of 6061T6 billet aluminum, which not only looks great but aids in dissipating heat and reducing weight. The filter element is made from medical grade, type 304 stainless steel micronic filter cloth to provide unmatched protection against oil contamination and resultant engine damage. A super strength neodymium rare earth magnet is installed in the top of the filter element used in the spin on models, which provides magnetic pre-filtering of the oil. The adhesive used in the filter assembly process is good to 600 degrees Fahrenheit, far above normal operating temperature of 180 to 300 degrees. The hydraulic quad-ring gasket doubles the seal between the filter housing and the engine and helps provide burst pressures exceeding 1000 psi.

4) How does this type of filtration compare to paper oil filters?

We use ASTMF316 testing procedures which eliminate many of the user variables found in the SAE procedures. Basically, the filter media is pressurized from one side, and when the media starts passing particles, that is the micron rating. We sent filter media from several common brands of paper filters to the lab to be run through the ASTM test. We sent the media to the lab with no names, just numbers for identification so they wouldn’t have any idea what brand filter they were testing. The results for the paper filters ranged from 48 microns for the best filter to over 300 microns for the worst filter. Our tests were right in line with other testing results we have researched that have paper media filters passing particles anywhere between 50 and 90 microns. What does this mean? Paper filters are rated on averages, percentages of efficiency (also known as beta ratios) and multiple passes, so a 10 micron rated paper filter (as advertised on the packaging) may be letting particles 50 microns and larger through. The medical grade stainless steel cloth that we use is consistent across the entire media surface and is rated at 35 microns, meaning nothing larger than 35 microns should pass through the material. The bottom line is we meet or exceed the filtration performance of OEM filters, eliminating any warranty issues.

5) What Are Microns?

A micron is one thousandth of a millimeter. That’s approx. .00003937 inches.

35 microns is about .00138″, (just over one-thousandth of an inch).

The lower limit of visibility to the human eye is about 40 microns.

Pollens range from about 30 to 50 microns

A white blood cell is about 25 microns

Cigarette smoke is about 10 microns

6) What about flow rate and why is it so important?

A very important dimension of oil filters is the flow rate. It doesn’t matter how good the filter media is if the oil is going through the bypass due to a low flow rate. We believe many people mistakenly chase smaller and smaller micron ratings to try to get cleaner oil. Flow rate is decreased exponentially as the micron rating is decreased. Again, once the flow is restricted to the point the bypass opens, the filter media rating becomes a moot point. This is why we meet or exceed the filtration of the factory filters to meet warranty requirements, while concentrating on providing maximum flow. This combination delivers the maximum combined benefit from the oil filter. A one-inch square of our filter material can flow 1.9 gallons of oil per minute at only 1-PSI pump pressure (70 degrees F). This means the stainless steel filter cloth we use in our small spin on filter element can flow 57 gals/minute.

We have run static pressure tests between our filters and paper filters for an identical application. For the same sized filters, our stainless steel micronic filter consistently flowed over 7 times more oil for the same time period than did the paper filter (tests were run at 68 degree ambient temperature). How does this affect what is going on inside your engine? We installed pressure gauges on each side of the filter element on a pro stock drag race engine so we could measure differential pressures (the difference in pressure between the input side of the filter element and the output side of the element). During a full pass down the strip the differential pressure of the stock paper filter measured 20psi difference. Our filter measured less than 1psi difference. Less differential pressure means less chance of bypass operation, faster oil pressure at start up, less drag on the oil pump (potential horsepower gains) and higher flow through the engine, often helping to cool the oil and keep the crankcase cleaner.

Another thing that can affect the paper filter flow is moisture. Not everyone is aware that engines get condensation in them. When paper gets wet it swells and may pass even less oil.

Now, think about all the particulates that have had a chance to settle to the bottom of the oil pan right where the oil pickup is… just waiting to go through the bypass valve directly to the engine components…

7) Will this filter affect the performance of my engine?

The reduction of back pressure against the oil pump will result in varying amounts of horsepower gain. It depends on your specific engine combination and application. We have seen as much as 5 hp gain, to very little or no gain depending on the drag the oil pump is producing in a specific circumstance. It is definitely not going to reduce performance. There are a couple of sample dyno charts in the “technical” tab of this web site. The higher oil flow through the engine along with the heat dissipation provided by the finned aluminum housing usually results in cooler oil temperatures which can help with performance as well and engine life.

8) Why do you promote inspecting the filter contents?

Mechanics have been cutting oil filters apart for ages. It’s one more way to “read” what is happening in the engine. Our filter makes it much easier than cutting apart messy paper filters. By checking the particles that get caught in the filter you can identify abnormal wear and prevent catastrophic engine failure. It’s a lot less aggravating to replace a rod bearing that’s starting to go, than to be standing next to your machine staring at that same rod sticking out the side of the engine!

9) What is K&P Engineering doing to help protect the environment?

With the cleanable, reusable design you no longer will be sending oily paper filters to the landfills (some states don’t even allow oil filters to go to the landfills…they must go to through special, expensive disposal processes). What does come out of the reusable filter during cleaning can be sent to the recycling center with the rest of your old oil. All of this helps prevent water and soil contamination. In addition, the environmental impacts of creating new paper filters is reduced, from steel production, media production, glue and painting. This oil filter truly is a renewable resource.

10) I have a high oil pressure application and need a high burst pressure similar to specialized paper racing filters. How much pressure will the K&P Engineering filter take?

Our spin on filters have been pressure tested to over 1000 psi. Let us know if you need more than that.

11) Why don’t you have an Anti Drain back Valve?

Many filters have a rubber flap over the intake holes that is an attempt to keep oil in the filter and minimize the time it takes to fill the filter when you start the engine (they call it an anti-drain back valve). A test you can perform to see how well this “valve” works is to fill a filter with oil, plug the large center spin on hole with a bolt, lay it on it’s side and then see how long it takes for the oil to drain past the rubber flap. We have found (and have read other published tests) that the filter eventually ends up with the same amount of oil in it as if it didn’t have the flap, it just takes longer to drain out. If the flap worked as planned it would be beneficial to have the extra oil in the filter at start up. On the other hand, that flap covering the intake holes is one more restriction the oil has to get by to get through the filter and back to the motor….

12) How much oil does this filter hold?

Slightly more or less than the stock filter depending on the specific application. It doesn’t really make any difference because of our filtration and flow capabilities. Continue to use your manufacturer’s prescribed method of checking to make sure there is the proper amount of oil in the engine (usually via a dipstick).

13) How do I install and remove the K&P Engineering filter?

A cup wrench is included with almost all of our spin on filters that mates to the 14 flats machined into the bottom rib of the housing. Please reference the Cleaning and Installation tab on this website for detailed instructions.

14) What if I accidentally ruin the filter element (I stepped on mine…)?

Not to worry…individual replacement parts are available through your dealer.

15) How do I clean the filter?

Please reference the Cleaning instructions tab on this web site.

16) Tell me about the filter sealing gasket (Quad Ring).

Our housings are designed and specially machined to utilize a quad ring as the sealing mechanism between the housing and the mounting surface. Quad rings are commonly found in hydraulic applications and have a high re usability factor. Along with our engineered housings, we have achieved burst pressures that exceed 1000 psi. You normally will be able to use the same quad ring for several oil changes. If needed, you can flip the quad ring over and use the other side for an additional oil change. A single quad ring can last for several years. New filter kits have a spare included in the packaging. Quad rings are more sensitive to dirt than the old square gaskets so make sure the mounting surface and quad ring are both free of debris before installing the filter. If you have had a quad ring tear, make sure you don’t have any burrs on the mounting surface, and be sure to lube the quad ring well with oil before installing the filter onto the engine or remote mount. Replacement quad rings should be available through the majority of our dealers, or can be found at hydraulic supply shops. The part numbers are as follows:

K&P Engineering Part No

Industry Standard Part No

Fits these housings

Used on these filter part numbers

QR1

QR -141 B70

C1

S1, 2, 9

QR2

QR -230 B70

C2, C3, C4, C5

S4, 5, 10, 15-19, 25, & aircraft

QR3

QR -337 B70

Gasket plate

S19

If you have difficulty locating a replacement, send your contact information (including mailing address) and part number needed to contact@kandpengineering.com and we will have someone contact you.

17) Will this filter affect my warranty?

No. Under the Magnuson-Moss Warranty Act, 15 U.S.C. SS 2301-2312 (1982), and the general principles of the Federal Trade Commission Act, a manufacturer may not require the use of any brand of filter unless the manufacturer provides that item free of charge under terms of the warranty. So, if you are told by a dealer that anything other than a specific brand of filter will void your warranty, ask for the statement in writing (you won’t get one), and request that filter be supplied free of charge. If you are charged for the filter, the dealer will be violating the Magnuson-Moss Warranty Act and other applicable law. This is a federal law and the Federal Trade Commission has authority to enforce it, including obtaining injunctions and orders containing affirmative relief. For more info do an Internet search on “Magnuson-Moss Warranty Act”.

Here is a link to one of the Federal Trade Commission’s guides for those offering warranties. Look for “Tie-in Sales provisions”. http://www.ftc.gov/bcp/conline/pubs/buspubs/warran...Here is the text:

“Tie-In Sales” Provisions

Generally, tie-in sales provisions are not allowed. Such a provision would require a purchaser of the warranted product to buy an item or service from a particular company to use with the warranted product in order to be eligible to receive a remedy under the warranty. The following are examples of prohibited tie-in sales provisions.

In order to keep your new Plenum Brand Vacuum Cleaner warranty in effect, you must use genuine Plenum Brand Filter Bags. Failure to have scheduled maintenance performed, at your expense, by the Great American Maintenance Company, Inc., voids this warranty.

While you cannot use a tie-in sales provision, your warranty need not cover use of replacement parts, repairs, or maintenance that is inappropriate for your product. The following is an example of a permissible provision that excludes coverage of such things.

While necessary maintenance or repairs on your AudioMundo Stereo System can be performed by any company, we recommend that you use only authorized AudioMundo dealers. Improper or incorrectly performed maintenance or repair voids this warranty.

Although tie-in sales provisions generally are not allowed, you can include such a provision in your warranty if you can demonstrate to the satisfaction of the FTC that your product will not work properly without a specified item or service. If you believe that this is the case, you should contact the warranty staff of the FTC’s Bureau of Consumer Protection for information on how to apply for a waiver of the tie-in sales prohibition.

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