Hengst Prius Air Filter (E1155L)
Hengst E1155L Toyota Prius Air Filter – Engine Air Filter
Premium Replacement Engine Air Filter for Toyota Prius
Hengst E1155L Engine Air Filter is a high-quality replacement engine air filter designed for compatible Toyota Prius applications using Toyota OE Part No. 17801-37021.
The engine air filter is responsible for filtering dust, dirt, pollen, sand and other airborne contaminants from the air entering the engine. Hengst E1155L helps maintain clean intake air while reducing the amount of abrasive particulate matter reaching sensitive engine components.
Toyota OE 17801-37021 is documented for 2010–2015 Toyota Prius 1.8L Full Hybrid EV-Gas (FHEV) applications and is also used on certain Prius Plug-In and Prius v models.
Key Features
- Premium Hengst replacement engine air filter
- Hengst Part Number: E1155L
- Toyota OE Part Number: 17801-37021
- Designed for compatible Toyota Prius applications
- Suitable for compatible 1.8L hybrid gasoline engines
- Helps remove dust, dirt, sand and airborne contaminants
- Helps protect engine components from abrasive particles
- Supports clean and consistent intake airflow
- Application-specific design for reliable fitment
- Ideal for routine engine maintenance
- Direct replacement where E1155L / 17801-37021 is specified
Toyota Prius Compatibility
The Hengst E1155L corresponds to Toyota OE 17801-37021.
Toyota parts references list 17801-37021 for:
- Toyota Prius 2010–2015
- Toyota Prius 1.8L Full Hybrid EV-Gas
- Toyota Prius Plug-In 2012–2015
- Toyota Prius v 2012–2017
The same Toyota OE number is also used for certain Toyota RAV4 applications, so always verify the exact vehicle before ordering.
Hengst Part Number
E1155L
Toyota OE Number
17801-37021
Primary Application
Toyota Prius 1.8L Hybrid
Important: Fitment can vary according to model year, engine, trim and market. Always match the OE number and vehicle specification before purchase.
Why Engine Air Filtration Matters
A hybrid vehicle still relies on its internal-combustion engine for part of its operation, making clean engine intake air essential.
Dust and airborne particles entering through the intake system can contaminate the engine and contribute to wear over time. A quality air filter helps capture these contaminants before they reach the engine while maintaining the airflow required for efficient combustion.
For vehicles operating in dusty or polluted environments, regular inspection and timely replacement of the engine air filter are particularly important.
Benefits
Effective Filtration
Helps capture dust, dirt, pollen, sand and other airborne contaminants before they enter the engine.
Engine Protection
Helps reduce abrasive particulate contamination reaching internal engine components.
Clean Intake Air
Supports a clean and consistent supply of air required for normal engine operation.
Application-Specific Fit
Designed for the specified application to provide proper positioning and sealing within the factory air-filter housing.
Reliable Maintenance
An ideal replacement when the existing engine air filter becomes dirty, damaged or reaches its recommended service interval.
How to Replace
- Switch off the vehicle and allow the engine to cool.
- Locate the engine air-filter housing.
- Release the housing clips or fasteners.
- Remove the existing air filter.
- Clean loose dust and debris from inside the housing.
- Compare the old filter with the Hengst E1155L to confirm correct fitment.
- Install the new filter in the correct orientation.
- Close and secure the air-filter housing completely.
- Confirm that the housing is properly sealed before operating the vehicle.
Professional Tip
Do not operate the engine without the air-filter element installed. A properly sealed air-filter housing is essential to prevent unfiltered air from entering the engine.
Product Specifications
- Brand: Hengst
- Part Number: E1155L
- Product Type: Engine Air Filter
- Toyota OE Number: 17801-37021
- Primary Vehicle: Toyota Prius
- Engine Application: Compatible 1.8L Hybrid Gasoline Engine
- Filter Location: Engine Air Intake
- Replacement Type: Direct replacement where specified
- Primary Function: Engine intake air filtration
Genuine Hengst Quality
Hengst is a German filtration specialist with extensive experience in automotive filtration. Its filtration products are developed around application-specific requirements, with a focus on reliable filtration, proper fitment and protection of critical vehicle systems.
Choosing the correct Hengst part number helps ensure that the replacement filter is matched to the intended vehicle application.
Important Fitment Note
Toyota OE 17801-37021 is used across several Toyota applications. For Prius, it is documented for 2010–2015 Prius 1.8L hybrid models, with additional applications including Prius Plug-In and Prius v.
Exact Reference
Hengst E1155L → Toyota 17801-37021
Always verify the vehicle’s exact model year, engine and OE reference before ordering.
Frequently Asked Questions
What is Hengst E1155L?
Hengst E1155L is a replacement engine air filter designed for compatible Toyota applications using the corresponding Hengst and Toyota OE references.
What is the Toyota OE number?
The corresponding Toyota OE reference is 17801-37021.
Is Hengst E1155L suitable for Toyota Prius?
Yes, where Hengst E1155L / Toyota 17801-37021 is the specified application.
Which Prius models use Toyota 17801-37021?
Toyota parts references list this OE number for 2010–2015 Prius, 2012–2015 Prius Plug-In, and 2012–2017 Prius v applications.
Is this a cabin air filter?
No. E1155L is an engine air filter, not a passenger-compartment/cabin air filter.
What does an engine air filter do?
It filters dust, dirt, pollen, sand and other airborne contaminants from the air entering the engine, helping protect internal components while maintaining clean intake airflow.
When should the air filter be replaced?
Follow the vehicle manufacturer’s recommended maintenance interval and inspect the filter more frequently if the Prius is regularly driven in dusty, sandy or heavily polluted environments.
Hengst E1155L Toyota Prius Air Filter
- Hengst E1155L
- Toyota 17801-37021
- Toyota Prius Air Filter
- Prius Engine Air Filter
- Prius 1.8 Air Filter
- Toyota Prius Hybrid Air Filter
- Hengst Toyota Air Filter
- Toyota Engine Air Filter
- Prius Air Filter Pakistan
- Toyota Prius Air Filter Pakistan
- Prius 2010 Air Filter
- Prius 2011 Air Filter
- Prius 2012 Air Filter
- Prius 2013 Air Filter
- Prius 2014 Air Filter
- Prius 2015 Air Filter
- Hengst Air Filter Pakistan
- Engine Air Filter
- Toyota Air Cleaner Filter
- AutoHub Pakistan
We Also Recommend
