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33-2129 33 Series 33-2129 Air Filter

You Save : $28.00 (35%)
List Price : $79.99
Manufacturer #33-2129
( Reviews)
Questions, Answers


33 Series
Quantity Sold:
Sold individually
10-year or 1 million-mile K&N limited warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Anticipated Ship Out Time:
2-3 business days
Filtration Efficiency Rating:
96 to 99%
Recommended Use:
Performance Replacement

Vehicle Fitment Information

Vehicle Name
Fitment Information
1999-2005 Chevrolet Silverado 1500
6 Cyl 4.3L
1999-2018 Chevrolet Silverado 1500
6 Cyl 4.3L
1999-2018 Chevrolet Silverado 1500
6 Cyl 4.3L
1999-2005 Chevrolet Silverado 1500
8 Cyl 4.8L
1999-2013 Chevrolet Silverado 1500
8 Cyl 4.8L
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Product Information


When most people think of top-of-the-line performance air filters, K&N comes to mind. That’s probably because in addition to being regarded as the world’s finest filtration company, K&N performance air filters will last as long as your vehicle’s engine does and are a factory replacement that can boost your horsepower output by as much as 4 horsepower. Started in 1969, K&N has garnered a reputation for engineering the world’s finest filtration products for cars, trucks, SUVs, motorcycles, race vehicles, commercial vehicles and anything in-between.

  • Replaces existing air filter
  • Boosts cold air flow which translates to more horsepower
  • Backed by K&N’s million mile warranty
  • Custom fit to your vehicle’s specifications
  • Cotton-gauze design features as many as 6 layers of filtration
  • The world’s best performance air filter
  • Only need to clean every 50,000 miles
  • All filters are washable, reusable and come already oiled by K&N
  • ‘Green’ design
  • Increases horsepower (up to 4 hp) and fuel efficiency
  • One air filter will last as long as one vehicle’s engine
  • Maintain with K&N Recharger kit - (not included)
  • Made in America
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 90 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Question and Answer

Will this oiled filter effect the mass flow air sensor?TommyOct 13, 2020
Best Answer:Hi Thomas, This performance replacement oil filter will have a positive effect on the mass air flow sensor and the air intake.
Aldrin P.STAFFOct 13, 2020

Customer Reviews

33 Series 33-2129 Air Filter
Sep 29, 2020
satified customer
quality of service from start to finish
aaron keith
Purchased on Sep 15, 2020
good service and ontime deliveries. helpful phone contacts
Purchased on Feb 24, 2014
33 Series 33-2129 Air Filter
Jun 11, 2019
excellent performance enhancing product
better gas mileage, better acceleration, super easy to install and maintain
Purchased on Oct 21, 2008
33 Series 33-2129 Air Filter
Jun 11, 2019
great insvestment
highly recomend this filter specially because yuo dont have to modified anything from you vehicle and really easy installation as auto technician i was a little unsure about to get this filters i didnt believe that performance that was revealed on the add its true my idea was only original work best but i was wrong in this area after market parts really work no question i recomend this specially you dont void you warranty as long you dont put too much oil in the filter specially if you vehicle is equiped w/ air flow meter or know as mass air flow sensor good luck and buy it pays off in time
Purchased on Sep 16, 2008
33 Series 33-2129 Air Filter
Jun 11, 2019
good buy
I love K&N product I have one for my Harley, but for for my truck I wonder if a cold air intake is a better buy for my truck with performance
Purchased on Apr 23, 2008
33 Series 33-2129 Air Filter
Jun 11, 2019
Air Filter purchase
Product was what I thought it should be based on the description.
Purchased on Apr 09, 2008
33 Series 33-2129 Air Filter
Jun 11, 2019
Quality product
Great reputation, product is sturdy. I use it in all my vehicles.
Purchased on Dec 17, 2007
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