Hengst E3945LI Cabin Air Filter - Primary or Secondary
OE Quality 60-Day Returns
Hengst

Hengst E3945LI Cabin Air Filter - Primary or Secondary

Brand Hengst E3945LI
Position Primary
Filter Media Material Particulate
Fits Porsche · 21 vehicles

Particulate media. Helps capture airborne particles before they enter the cabin.

Cabin air filter. Helps keep the HVAC system’s incoming air cleaner.

Cross-references 99157237100 and CU 30 004 for the same application. See all 2.

$25.98Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $25.98
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Cabin Air Filter options

Hengst E3945LI Cabin Air Filter for Porsche

The Hengst E3945LI is a particulate cabin air filter for select Porsche models, built to help maintain cleaner air inside the vehicle HVAC system. It is a direct-fit option for Porsche 911, Boxster, and Cayman applications across the listed years.

Key Features

  • Particulate filter media for cabin air filtration
  • Fits select Porsche 911, Boxster, and Cayman applications
  • Primary and secondary position coverage where listed
  • OE-style replacement for HVAC cabin filtration service
  • Cross-references Porsche 99157237100 and CU 30 004

Detailed Description

Hengst E3945LI cabin air filter is specified for 2012-2015 Porsche 911, 2013-2015 Porsche Boxster, 2014-2015 Porsche Cayman, and 2012 Porsche Boxster in the secondary position. As a particulate cabin filter, it is used in the HVAC intake path to capture airborne debris before it enters the passenger compartment. If you are searching for a Porsche 911 cabin air filter, Porsche Boxster cabin air filter, or Porsche Cayman cabin air filter, E3945LI is the listed part number for these applications.

This part cross-references Porsche 99157237100 and CU 30 004 for the same application. The Hengst E3945LI part number is also useful when verifying service parts for Porsche HVAC maintenance and cabin air filter replacement.

What It Helps Address

  • Reduced cabin air filtration from a loaded filter
  • Dust and particulate buildup in the HVAC intake
  • Restricted airflow through the climate control system
  • Unwanted debris entering the passenger cabin
  • Routine cabin air filter service intervals on listed Porsche models

Installation Notes and Tips

Confirm the vehicle year, model, and filter position before ordering. Match the existing filter location to the listed primary or secondary application, and compare the old filter to Hengst E3945LI during replacement. Follow the vehicle service procedure for access to the cabin air filter housing.

Quality Assurance

Hengst is an established filtration brand, and this cabin air filter is cataloged with OE-style fitment data for the listed Porsche applications. Verify part number E3945LI against the vehicle VIN and existing filter reference before installation.

This part fits 21 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2015Porsche9113.8LH6PrimaryMaterial: Particulate.
2015Porsche9113.4LH6PrimaryMaterial: Particulate.
2015PorscheBoxster3.4LH6PrimaryMaterial: Particulate.
2015PorscheBoxster2.7LH6PrimaryMaterial: Particulate.
2015PorscheCayman3.4LH6PrimaryMaterial: Particulate.
2015PorscheCayman2.7LH6PrimaryMaterial: Particulate.
2014Porsche9113.8LH6PrimaryMaterial: Particulate.
2014Porsche9113.4LH6PrimaryMaterial: Particulate.
2014PorscheBoxster3.4LH6PrimaryMaterial: Particulate.
2014PorscheBoxster2.7LH6PrimaryMaterial: Particulate.
2014PorscheCayman3.4LH6PrimaryMaterial: Particulate.
2014PorscheCayman2.7LH6PrimaryMaterial: Particulate.
2013Porsche9113.8LH6PrimaryMaterial: Particulate.
2013Porsche9113.4LH6PrimaryMaterial: Particulate.
2013PorscheBoxster3.4LH6PrimaryMaterial: Particulate.
2013PorscheBoxster2.7LH6PrimaryMaterial: Particulate.
2012Porsche9113.8LH6PrimaryMaterial: Particulate.
2012Porsche9113.6LH6PrimaryMaterial: Particulate.
2012Porsche9113.4LH6PrimaryMaterial: Particulate.
2012PorscheBoxster3.4LH6SecondaryMaterial: Particulate.
2012PorscheBoxster2.9LH6SecondaryMaterial: Particulate.
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
99157237100CU 30 004