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K&N Air Filter Foam Insert Block DSL Only (E-0644)

Take your DSL model to the next level with this optional foam piece, specifically designed to replace the OEM foam block. Say goodbye to restrictive airflow and hello to improved performance.

This pre-cut foam insert is ready to install, making it a hassle-free upgrade for your engine air box pre-filter. Experience the difference with K&N's high-quality air filter foam insert block.

  • Pre-cut and ready to install for a hassle-free upgrade
  • Replaces OEM foam block for improved airflow and performance
  • Specifically designed for DSL models only
Make Model Year Type
Ford F-250 Super Duty 2017 King Ranch
Ford F-250 Super Duty 2017 Lariat
Ford F-250 Super Duty 2017 Platinum
Ford F-250 Super Duty 2017 XL
Ford F-250 Super Duty 2017 XLT
Ford F-250 Super Duty 2018 King Ranch
Ford F-250 Super Duty 2018 Lariat
Ford F-250 Super Duty 2018 Limited
Ford F-250 Super Duty 2018 Platinum
Ford F-250 Super Duty 2018 XL
Ford F-250 Super Duty 2018 XLT
Ford F-250 Super Duty 2019 King Ranch
Ford F-250 Super Duty 2019 Lariat
Ford F-250 Super Duty 2019 Limited
Ford F-250 Super Duty 2019 Platinum
Ford F-250 Super Duty 2019 XL
Ford F-250 Super Duty 2019 XLT
Ford F-350 Super Duty 2017 King Ranch
Ford F-350 Super Duty 2017 Lariat
Ford F-350 Super Duty 2017 Platinum
Ford F-350 Super Duty 2017 XL
Ford F-350 Super Duty 2017 XLT
Ford F-350 Super Duty 2018 King Ranch
Ford F-350 Super Duty 2018 Lariat
Ford F-350 Super Duty 2018 Limited
Ford F-350 Super Duty 2018 Platinum
Ford F-350 Super Duty 2018 XL
Ford F-350 Super Duty 2018 XLT
Ford F-350 Super Duty 2019 King Ranch
Ford F-350 Super Duty 2019 Lariat
Ford F-350 Super Duty 2019 Limited
Ford F-350 Super Duty 2019 Platinum
Ford F-350 Super Duty 2019 XL
Ford F-350 Super Duty 2019 XLT
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