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The K&N E-1023 is a direct drop-in replacement air filter for 1989-1993 Dodge pickup trucks equipped with the 5.9L Cummins L6 diesel engine including D250 D350 W250 W350 models. This high-flow filter uses layered oiled cotton media to deliver more airflow for added horsepower and acceleration while trapping contaminants for engine protection. Designed to last the life of your vehicle it installs easily into the factory airbox and cleans with a simple wash.
Key Features
- 6 Layers of Protection: Multiple layers of premium cotton gauze with a tacking agent form a mesh that blocks and traps dirt and harmful contaminants from reaching the engine.
- Clean Every 5 Years: Requires cleaning only every 75000 miles under normal highway driving or about 5 years at 15000 miles per year.
- Easy Installation: Pre-oiled and ready to drop into your factory airbox for straightforward upgrade without tools or modifications.
- Increased Horsepower: Advanced filter media allows more air through for better throttle response acceleration and overall engine performance.
- Reusable Design Saves Money: Washable filter cuts costs by up to $125 over 200000 miles compared to buying multiple disposable OEM filters.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1989-1993 | Dodge | D250 | Verify engine and application notes |
| 1989-1993 | Dodge | D350 | Verify engine and application notes |
| 1989-1993 | Dodge | W250 | Verify engine and application notes |
| 1989-1993 | Dodge | W350 | Verify engine and application notes |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | E-1023 |
| Product Type | Air Filters - Drop In |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new K&N air filters - drop in identified by manufacturer part number E-1023. 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.
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Frequently Asked Questions
How do I confirm K&N E-1023 fits my vehicle?
Match the year, make, and model in the fitment table, then confirm the engine, factory housing, sensor layout, emissions notes, and any application restrictions stated for this exact part.
Is K&N E-1023 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-1023?
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
- Remove old filter from factory airbox drop in E-1023 no cutting or drilling required.
- Compatible with stock airbox hardware no additional parts needed.
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