K&N 21-23 Hyundai Elantra Replacement Air Filter K&N Engineering KNN33-5121
K&N 21-23 Hyundai Elantra Replacement Air Filter K&N Engineering KNN33-5121
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K&N 21-23 Hyundai Elantra Replacement Air Filter

KNN33-5121
024844394118
Air Filters - Drop In
16 Units In Stock - Ships Next Business Day
$ 68.99
$ 68.99

SKU: 33-5121 | UPC: 024844394118

K&N 33-5121 Replacement Air Filter for 2021-2023 Hyundai Elantra Hybrid

Upgrade your 2021-2023 Hyundai Elantra Hybrid with the K&N 33-5121 replacement air filter. This washable high-flow filter uses layered oiled cotton media to deliver more airflow for increased horsepower and acceleration. It drops directly into your factory air box for a simple performance boost that lasts the life of your vehicle.

Key Features

  • 4 Layers of Protection: Multiple layers of premium cotton gauze with a tacking agent create a mesh that traps contaminants while allowing maximum airflow.
  • Clean Every 5 Years: Service only every 75,000 miles under normal highway driving, based on 15,000 miles per year.
  • Easy Installation: Pre-oiled and ready to install in your factory air box for quick gains without tools or modifications.
  • Engineered Power: Advanced media design increases horsepower, acceleration, and overall engine performance.
  • Lifetime Durability: Reusable construction backed by K&N No-Hassle Lifetime Limited Warranty.

Product Notes

  • Filter measures 9.5 in length x 7.938 in width x 1.063 in height.
  • Wash and re-oil using K&N cleaning kit for long-term performance.
  • Weight is 1.3 lb. ships in protective packaging.

Installation Notes

  • Professional installation recommended.
  • Remove factory filter and drop in K&N 33-5121. no modifications needed.
  • Compatible with OEM air box hardware.

This Part Fits

Year Make Model Submodel
2021 Hyundai Elantra SEL Hybrid
2021 Hyundai Elantra Limited Hybrid
2022-2023 Hyundai Elantra Blue Hybrid
2021-2023 Hyundai Elantra Limited Hybrid

Why Choose K&N?

  • Proven leader in high-flow filtration for over 50 years.
  • Reusable design cuts replacement costs and landfill waste.
  • Precision-engineered for exact OEM fit and dyno-tested gains.

Frequently Asked Questions

  • Q: Does this fit my 2022 Hyundai Elantra Hybrid Blue?
    A: Yes, the K&N 33-5121 fits 2022-2023 Elantra Blue Hybrid, Limited Hybrid, and 2021 SEL Hybrid models perfectly as a direct replacement.
  • Q: What material is used in this filter?
    A: Eight layers of oiled cotton gauze provide high airflow and filtration in a panel-style design.
  • Q: What is the warranty coverage?
    A: Backed by K&N No-Hassle Lifetime Limited Warranty for stock replacement air filters, with limitations applying.

Shipping & Handling

  • Method: Standard ground shipping
  • Availability: In stock - ships same or next business day
  • Packaging: Secure box measuring 11.2 x 9.3 x 2.1 inches
  • Weight: 1.3 lb
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