OEM, K&N, Green Filter Drop-in Maintenance Cost Comparison

Discussion in 'SRT Hellcat Maintenance' started by rayzazoo, Aug 24, 2015.

  1. rayzazoo

    rayzazoo DRIVESRT.COM Gold Supporting Member

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    Here is an idea of maintenance costs associated with drop-in air filters.

    To save you some reading, if you factor maintenance and potential MPG savings costs (regular driving), an aftermarket drop-in filter is a very cost effective option with a potential savings of +$185 (potentially saved) by the time 30,000mi rolls around on your vehicle.

    Without considering potential fuel savings, by the time 60,000mi rolls around, Green Filter would be $14 savings and K&N would be a $25 savings.

    @30,000 mi service interval
    OEM = -$45 (filter w/ shipping)
    Green Filter =
    -$76 (filter and cleaner kit) + $261 (mpg savings) = +$185 (saved)
    K&N = -$65 (filter and cleaner kit) + $261 (mpg savings) = +$196 (saved)

    @60,000 mi service interval (adds 30,000 mi service interval)
    OEM = -$45 (filter w/ shipping) -$45 (filter w/ shipping) = -$90 (paid)
    Green Filter = $0 + $261 (mpg savings) = $261 + $185 = $446 (saved)
    K&N = $0 + $261 (mpg savings) = $457 = $261 + $196 = $457 (saved)

    @90,000 mi service interval (adds 30,000 mi service interval)
    OEM = -$135 (paid)
    Green Filter = -$15 (cleaner kit) + $261 (mpg savings) = $446 + $261 - $15 = $692 (saved)
    K&N = -$14 (cleaner kit) + $261 (mpg savings) = $457 + $261 - $14 = $704 (saved)

    Fuel Saving Costs
    And from a MPG cost aspect:

    For average driving, it was reported by forum members that they went from 17.1 mpg to 18 mpg with the aftermarket drop-in filter:

    30,000 mi (first filter service interval)

    With aftermarket filter 18 mpg vs. 17.1 mpg stock = 0.9 mpg difference

    30,000 mi / 17.1 mpg = 1754 gals (OEM)
    30,000 mi / 18.0 mpg = 1667 gals (Aftermarket K&N or Green Filter Drop-in)

    87 gals saved x $3 (est cost per gal) = +$261 per 30,000 mi

    Some other thoughts are, the reason behind this is due to the added air flow leaning out the air fuel ratio more than stock.

    Maintenance Costs

    #7139
    Green Filter USA: $61.00 + $15.00 = $76.00
    (cleaning kit expected to last two service intervals or 60,000mi)

    #33-2460
    K&N Filter USA: $51.00 + $14.00 = $65.00
    (cleaning kit expected to last two service intervals or 60,000mi)

    #68172459AA
    Mopar OEM: $45.00

    Green Filter / K&N / OEM

    00,000 mi - $76 / $65 / $0
    30,000 mi - $ 0 / $ 0 / $45
    60,000 mi - $ 0 / $ 0 / $45
    90,000 mi - $15 / $14 / $45 (aftermarket cleaning kit replacement)
    120,000 mi - $ 0 / $ 0 / $45
    150,000 mi - $ 0 / $ 0 / $45
    ---------------------------
    Sub Total - $76 / $65 / $90 (at 60,000 mi)
    Sub Total - $76 / $65 / $45 (30,000 - 59,999 mi)
    Total - $91 / $79 / $225 (at 150,000 mi)


    Air Flow Comparison
    From an airflow perspective (CFM), the aftermarket filters would flow between 1244 CFM (stock OEM) and 1491 CFM (OEM box, no filter).

    Hellcat Intake Air Flow Comparison Tests.jpg


    Afterthoughts
    What I'd really like to see is AFE or AEM come back out with a DryFlow Filter that meets the airflow requirements for the Hellcat. This would reduce the cost with a recharge kit (whether environmentally friendly or not) and it would also eliminate some of the hassles/concerns of an oiled filter element.
     
    Last edited: Aug 24, 2015

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