HomeHVAC > FiltersHengst E3940LC Cabin Air Filter - Primary or Secondary
Part #: E3940LC

Hengst E3940LC Cabin Air Filter - Primary or Secondary

Primary
⚙️ 87 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$35.09Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Porsche, 718 Boxster, 718 Cayman, 718 Spyder, 911, Boxster, and Cayman
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Hengst HEZ Cabin Air Filter E3940LC

The Hengst HEZ Cabin Air Filter E3940LC is designed to provide effective filtration for select Porsche models. Featuring carbon filter media, this cabin air filter helps maintain clean air inside your vehicle's cabin by reducing odors and airborne contaminants.

  • Carbon filter media for enhanced odor control
  • Compatible with Porsche 718 Boxster, 718 Cayman, 718 Spyder, 911, Boxster, and Cayman models
  • Part number E3940LC for precise fitment
  • Designed to improve HVAC system performance
  • Easy to install replacement filter

HEZ Cabin Air Filter Product Line Details

The HEZ Cabin Air Filter line by Hengst focuses on delivering cabin air filters with specialized media to address specific filtration needs. This product line incorporates carbon filter media to target odors and gaseous pollutants, making it suitable for drivers seeking improved air quality inside their Porsche vehicles. The E3940LC is part of this line, ensuring compatibility and filtration performance tailored to the listed Porsche models.

Product Description and Features

The Hengst HEZ Cabin Air Filter E3940LC uses carbon filter media to capture and neutralize odors and harmful gases that can enter the cabin through the HVAC system. This filter is engineered to fit Porsche 718 Boxster, 718 Cayman, 718 Spyder, 911, Boxster, and Cayman models, providing a reliable replacement option that maintains the original air quality standards. The carbon media enhances the filter’s ability to reduce unpleasant smells and improve overall cabin comfort during driving.

Common Applications and Issues Addressed

  • Reduces odors from outside sources such as exhaust fumes and pollution
  • Helps filter out airborne contaminants and allergens
  • Prevents dust and debris buildup in the HVAC system
  • Improves air quality inside Porsche 718 Boxster and Cayman cabins
  • Maintains HVAC system efficiency by protecting internal components

Installation Notes and Tips

  • Refer to the vehicle owner’s manual for cabin filter access location
  • Ensure the filter is installed with the correct airflow direction indicated on the filter frame
  • Replace the filter regularly according to manufacturer recommendations or when airflow decreases
  • Wear gloves to avoid contaminating the filter media during installation

Quality Assurance and Warranty

Hengst cabin air filters, including the HEZ Cabin Air Filter E3940LC, are manufactured to meet OEM quality standards. While specific warranty details may vary, Hengst products typically come with a limited warranty against defects in materials and workmanship. Using this filter helps maintain the integrity of your Porsche’s HVAC system and cabin air quality.

BrandHengst
Part NumberE3940LC
Filter Media MaterialCarbon

This part fits 87 vehicles. Search below:

YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
2025Porsche718 Boxster2.0LH4N/AMaterial: Carbon; HEZ Cabin Air Filter
2025Porsche718 Cayman4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2025Porsche718 Spyder4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2025Porsche911Coupe3.7LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2024Porsche718 Boxster2.0LH4N/AMaterial: Carbon; HEZ Cabin Air Filter
2024Porsche718 Cayman4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2024Porsche718 Spyder4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2024Porsche9113.7LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2023Porsche718 Boxster4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2023Porsche718 Cayman4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2023Porsche718 Spyder4.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2023Porsche9114.0LH6N/AMaterial: Carbon; HEZ Cabin Air Filter
2022Porsche718 Boxster4.0LH6N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche718 Boxster2.5LH4N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche718 Boxster2.0LH4N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche718 Cayman4.0LH6N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche718 Cayman2.5LH4N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche718 Cayman2.0LH4N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche718 Spyder4.0LH6N/AMaterial: Carbon; With OE No. 991 573 623 00
2022Porsche9113.7LH6N/AMaterial: Carbon; With OE No. 9P1 819 631
2022Porsche9113.0LH6N/AMaterial: Carbon; With OE No. 9P1 819 631
2021Porsche718 Boxster4.0LH6N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche718 Boxster2.5LH4N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche718 Boxster2.0LH4N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche718 CaymanGTS 4.04.0LH6N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche718 CaymanGT44.0LH6N/AMaterial: Carbon; With OE No. 991 573 623 00
2021Porsche718 Cayman2.5LH4N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche718 Cayman2.0LH4N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche718 Spyder4.0LH6N/AMaterial: Carbon; with OE No. 991 573 623 00
2021Porsche9113.7LH6N/AMaterial: Carbon; with OE No. 9P1 819 631
2021Porsche9113.0LH6N/AMaterial: Carbon; with OE No. 9P1 819 631
2020Porsche718 Boxster2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2020Porsche718 Boxster2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2020Porsche718 Cayman4.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2020Porsche718 Cayman2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2020Porsche718 Cayman2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2020Porsche9113.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche718 Boxster2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche718 Boxster2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche718 Cayman2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche718 Cayman2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche9114.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche9113.8LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2019Porsche9113.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche718 Boxster2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche718 Boxster2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche718 Cayman2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche718 Cayman2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche9114.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche9113.8LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2018Porsche9113.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche718 Boxster2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche718 Boxster2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche718 Cayman2.5LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche718 Cayman2.0LH4N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche9114.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche9113.8LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2017Porsche9113.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016Porsche9114.0LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016Porsche9113.4LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016PorscheBoxster3.8LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016PorscheBoxster3.4LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016PorscheBoxster2.7LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016PorscheCayman3.8LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016PorscheCayman3.4LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2016PorscheCayman2.7LH6N/ACarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2015Porsche9113.8LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2015Porsche9113.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2015PorscheBoxster3.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2015PorscheBoxster2.7LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2015PorscheCayman3.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2015PorscheCayman2.7LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2014Porsche9113.8LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2014Porsche9113.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2014PorscheBoxster3.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2014PorscheBoxster2.7LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2014PorscheCayman3.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2014PorscheCayman2.7LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2013Porsche9113.8LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2013Porsche9113.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2013PorscheBoxster3.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2013PorscheBoxster2.7LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2012Porsche9113.8LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2012Porsche9113.6LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2012Porsche9113.4LH6PrimaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2012PorscheBoxster3.4LH6SecondaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.
2012PorscheBoxster2.9LH6SecondaryCarbon cabin air filter optimized for various vehicle models to enhance filtration efficiency.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

991573623009P1 819 631CUK 25 006

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.