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K&N E-4551

Standard-Flow Heavy-Duty Air Filter Onan QD and HQDPA with OEM #1402897 6.813 inches length

K&N E-4551


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K&N E-4551 Standard-Flow Heavy-Duty Air Filter Onan QD and HQDPA with OEM #1402897 6.813 inches length $47.99
Standard-Flow Heavy-Duty Air FilterOnan QD and HQDPA with OEM #1402897
  • Oval Straight Filter
  • Outside Length: 6.813"
  • Outside Width" 4.188"
  • Height: 4"

  • K&N E-4551 Details

    Standard Flow

    Cross-Reference by Brand

    • Onan 1402897
    • WIX 49697


    • ONAN QD 8000 - HDKAK DSL - Spec Letter A-L, OEM 1402897
    • ONAN QD 7500 - HDKAJ DSL - Spec Letter A-L, OEM 1402897
    • ONAN QD 6000 - HDKAH DSL - Spec Letter A-L, OEM 1402897
    • ONAN HQDPC DSL - Spec Letter C OEM 1402897
    • ONAN HQDPA DSL - Spec Letter A-C, OEM 1402897


    Top Style
    Inner Wire
    Top Material/Finish
    Outside Length
    6.813 in (173 mm)
    Outside Width
    4.188 in (106 mm)
    Air Filter Shape
    Flange Angle (Deg)
    Flange Inside Diameter
    0 in (0 mm)
    Flange Length
    0 in (0 mm)
    Package Contents
    1 Air Filter
    Package Quantity
    Product Style
    Oval Air Filter
    4 in (102 mm)
    Weight (lbs.)
    0.8 lb (0.4 kg)
    Base Outside Length
    6.813 in (173 mm)
    Base Outside Width
    4.188 in (106 mm)
    Inside Length
    5.188 in (132 mm)
    Inside Width
    2.563 in (65 mm)
    Top Outside Length
    6.813 in (173 mm)
    Top Outside Width
    4.188 in (106 mm)
    Manufacturer's Part Number:

    Spend a little more now to save a lot more later! K&N Washable Air Filters spare the waste and expense of replacing disposable air filters. These commercial-grade air filters do not require oiling, and they're sturdy enough to be cleaned with power sprayers and pressure washers. Unlike other heavy-duty air filters that are non-serviceable 1-piece units, the filtration medium of a K&N Heavy-Duty Air Filter can be removed from its canister. The medium is a hybrid of synthetic material and aluminum screen wire. Designed to last 300,000 miles, these reusable filters reduce air restriction and improve filtration efficiency to deliver more power. K&N: Simpler filter maintenance, Better engine performance.

    Note: "S" or "R" at the end of a part number indicates direction of air flow through the media: Standard (white on the inside) or Reverse (white on the outside). "Standard" flows air from the outside in; "Reverse" flows air from the inside out. The media is designed to flow one way ("depth loading"). Air flow going the wrong way can cause clogging ("surface loading"). K&N recommends using a filter only in its intended direction.

    Applications: Tractor Trailers, Big Rigs, Heavy-Duty Trucks, Recreational Vehicles, Buses, Toterhomes & Totercoaches, Construction Machinery, and Agricultural & Forestry Equipment. Engineered for large turbo diesel engines and Class 6-8 over-the-road trucks. Available in standard or reverse flow. Click Details while viewing a part number for cross-reference part numbers & specific vehicles.


    • Designed to heavy duty turbo diesel applications
    • Improves power and fuel economy
    • Reusable wash, oil and go design