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The K&N E-3515 oval air filter measures 7.75 inches wide by 14.625 inches long by 2 inches high with a 7.75 inch centered flange. It fits 1988-1991 Honda Civic and CRX models as a direct drop-in replacement for the factory air filter. Layered oiled cotton media improves airflow captures contaminants increases horsepower and protects the engine while lasting the life of the vehicle.
Key Features
- Increases Horsepower: More air reaches the engine for added power during acceleration and highway driving.
- High Airflow: State-of-the-art design moves more air than stock filters into the intake system.
- Ships in protective box measuring 15in x 8in x 3in.
- High-flow cotton media proven in racing and street applications.
- Direct drop-in replacement removes old filter and installs new one in under 10 minutes.
- Multi-layer oiled cotton gauze provides airflow while filtering contaminants effectively.
Fitment
| Fitment Status | Universal or dimensional product |
|---|---|
| Required Verification | Exact dimensions, media, connection, mounting interface, and companion part number |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | E-3515 |
| Product Type | Air Filters - Drop In |
| Fitment Type | Universal |
| Condition | New |
What's Included
One new K&N air filters - drop in identified by manufacturer part number E-3515. Hardware, adapters, clamps, hoses, filters, and service supplies are included only when stated for this exact product.
About K&N Engineering
K&N develops reusable air filtration, intake, oil filtration, fuel filtration, and related performance products for vehicle-specific and dimensional applications.
Related K&N Engineering Products
- Shop all K&N Engineering products
- K&N Custom Oval Air Filter 7.75in OW X 14.625in OL x 4in H
- K&N Custom Air Filter - Oval - 11.5in O/S L x 8.125in O/S W x 2in H
- K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in H
Frequently Asked Questions
How do I confirm K&N E-3515 fits my setup?
Match every listed dimension, flange or thread size, media type, mounting interface, and companion component. A similar shape or outside dimension alone does not confirm compatibility.
Is K&N E-3515 washable and reusable?
Serviceability depends on the exact media used for this part number. Follow the K&N cleaning and oiling directions for this filter and never apply oil to media specified as dry.
What should be checked after installing K&N E-3515?
Verify seals, clamps, fasteners, hoses, sensors, wiring, and surrounding clearance as applicable. Check for leaks or contact, then follow the manufacturer service and reinspection schedule.
Installation Instructions
- Direct drop-in replacement removes old filter and installs new one in under 10 minutes
- Compatible with factory air box hardware and mounting points
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