It's time. Since 2006, Rugged Rocks Off Road has been dedicated to providing top-quality Nissan 4x4 parts and accessories, supporting the nissan off-road community with passion and commitment. Your support has been instrumental in my journey, and I have been honored to be a part of your adventures. ​After much consideration, I have decided to close the sale of Nissan parts at Rugged Rocks Off Road to focus on developing advanced mapping products through Rugged Routes at ruggedroutes.com. This direction aims to enhance your off-road experiences with innovative off-road mapping solutions for wide varietey of motorsport vehicles. A few products on the Rugged Rocks homepage will remain temporarily available during this transition and exisiting orders will be filled. For new Nissan parts enquiries, please contact Shadow Wolf Mfg at: https://shadowwolfmfg.com/
It has truely been a great journey as an integral part of my adult life for nearly 20 years, has shaped me as an individual, and introduced me many new friends. Moving on has been a heavy and emotional decision that should have probably been made years ago to support a healthier lifestyle. Thanks again for all the suport over the years, it's been a ride.
See you on the trail, 
Steven Lutz 
Founder, Owner, Sole Operator, President..... my mom calls me an Inventor. 

  • Nissan Hardbody Air Filter by KN, 3.0L, 1990 Round, 1986-1989 (D21)

Fits years 1986, 1987, 1988, 1989   

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warrantyル and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

Air Filter Shape: Round
Filter Material: Cotton Gauze
Filter Re-Oiling Amount: 1.02 oz (30 ml)
Flanges: None
Height: 2.375" (60 mm)
Inner Wire: No
Inside Diameter: 9.25" (235 mm)
Outside Diameter: 11" (279 mm)

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Nissan Hardbody Air Filter by KN, 3.0L, 1990 Round, 1986-1989 (D21)

  • Brand: K and N
  • Availability: Out Of Stock
  • Product Code: KN-E-2830_a
  • $48.99


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