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Sinister Diesel 4in ID 10in Tall Replacement Air Filter

Whether you need to replace a damaged filter on your Sinister Diesel Cold Air Intake or if you're making your own air intake, Sinister Diesel has you covered! Coming in at 10" tall and a 4" Inner Diameter and high flow filter, the Sinister Diesel Universal Replacement Filter can support huge air flow to meet any needs. We utilize an 8-layer cleanable cotton filter media for maximum air flow and a long life.; Features:8-Layer Cleanable Cotton Filter Media, 10" tall w/ a 4" ID Silicone Inlet, Features a Honey-comb Filter-guard that's finished in Sinister BlueClick Here for Pre-Filter Universal Replacement Reusable Air Filter (4" Inner Diameter). Universal Fit

The Sinister Diesel Universal Replacement Air Filter is designed to replace a damaged filter on a Sinister Diesel Cold Air Intake or support a custom air intake project. With a 4-inch inner diameter and 10-inch overall height, this high-flow filter provides the airflow capacity needed for demanding automotive applications while offering universal fitment for compatible intake systems. Part number SD-CAI-FILTER is an ideal choice for drivers, builders, and enthusiasts seeking a reusable performance air filter.
Constructed with 8-layer cleanable cotton filter media, the Sinister Diesel SD-CAI-FILTER balances high airflow with long-term usability. The reusable design allows the filter to be cleaned and maintained instead of routinely replaced, helping support consistent intake performance over time. A honeycomb filter guard finished in Sinister Blue adds protective support to the filter media and gives the component a distinctive appearance when installed in an exposed or aftermarket intake system.
This Sinister Diesel replacement filter is intended for automotive use and includes a silicone inlet compatible with a 4-inch intake connection. It is not CARB approved and may require acknowledgment of applicable emissions restrictions before purchase or installation. Verify intake clearance, connection compatibility, and local emissions requirements before ordering. A compatible pre-filter is also available separately for additional protection in dusty or off-road environments.

Features:

  • 8-layer cleanable cotton filter media supports high airflow and reusable performance
  • 4-inch inner diameter silicone inlet fits compatible intake tubing and systems
  • 10-inch-tall design provides substantial filter surface area for demanding applications
  • Honeycomb filter guard finished in Sinister Blue helps protect the filter media
  • Universal replacement design works with compatible Sinister Diesel and custom cold air intake systems
  • Reusable construction allows cleaning and maintenance for extended service life
  • Not CARB approved; verify emissions requirements before installation