K-N FILTERS E-3040 Intake Air Filter

( Brand: K-n Filters ), ( Manufacturer Part Number: E-3040 ), ( Base Color: Black ), ( Base Color 2: Red ), ( Base Outside Dimension: 9.375 L X 6.125 W ), ( Base Outside Dimension 2: 238.00 Mm L X 156.00 Mm W ), ( 00 Mm: 2, 25 ), ( Filter Height 2: 2.25 ), ( Filter Height 3: 57.00 Mm ), ( Filter Media Material: Cotton Gauze ), ( Graphics: Custom ), ( Inside Diameter: 8.063 L X 1.625 W ), ( Inside Diameter 2: 205.00 Mm L X 41.00 Mm W ), ( Prop65: See Item Description ), ( Type: Air Filter ), ( Units: Each ), ( Part Type: Other ), ( Alt Mpn 1: 1011-1451 ), ( Alt Mpn 2: 403040 ), ( Alt Mpn 3: 606044 ), ( Alt Mpn 4: Knne-3040 ), ( Category 1: Air Filters / Cleaners ), ( Average Delivery Time: 2-3 Days ), ( Package Weight: 1.5000 ), ( Package Length: 10.20 ), ( Package Width: 10.00 ), ( Package Height: 3.80 ), ( Manufacturer Warranty: 90 Days )

Review K N FILTERS Rk series Air Intake System Replacement Filter

The E-3040 RK-Series Air Intake Filter from Cummins is a premium replacement filter designed to provide optimal engine protection and air quality for heavy-duty vehicles. This filter, specifically engineered for Cummins engines, is constructed with a pleated filter media that boasts an impressive surface area, enhancing its ability to capture and retain contaminants as small as 10 microns.

The filter media is housed within a robust, reinforced aluminum frame, ensuring a secure and snug fit within your engine compartment. The filter's unique Rib-Kelp design enhances its structural integrity, providing superior filtration efficiency and durability.

The E-3040 RK-Series Air Intake Filter features a high-capacity, synthetic media that offers excellent airflow, ensuring your engine receives a consistent supply of clean, fresh air. This filter is designed to be used in harsh operating conditions, making it an ideal choice for heavy-duty applications where engine performance and longevity are critical.

The filter element is easy to access and replace, with a convenient access door and quick-release clamps that make the filter change process quick and hassle-free. The filter comes complete with an OEM-quality gasket, ensuring a perfect seal and preventing any unwanted air leaks.

In summary, the E-3040 RK-Series Air Intake Filter from Cummins is a high-performance, durable solution that delivers superior engine protection and air quality for heavy-duty applications. Its robust design, advanced filtration media, and easy-to-change element make it an essential component for maintaining the performance and longevity of your Cummins engine.

The E-3040 RK-Series air intake filter is a popular aftermarket option for improving the air filtration in various vehicles. Here are some pros and cons to consider before making a purchase:

1. Enhanced Air Filtration: The E-3040 RK-Series air intake filter provides better filtration than the stock filter, trapping more dirt, dust, and other pollutants that can harm the engine.

2. Increased Engine Performance: By allowing more clean air into the engine, this filter can improve combustion efficiency, leading to increased horsepower and torque.

3. Longer Filter Life: The pleated design and high-quality filter media of the E-3040 RK-Series filter can result in a longer filter life compared to the stock filter.

4. Easy Installation: The installation process for this filter is generally straightforward and can be completed in about 30 minutes or less for most vehicles.

5. OEM-Quality Construction: This air intake filter is manufactured to meet or exceed OEM specifications, ensuring a reliable and durable fit.

1. Cost: The E-3040 RK-Series air intake filter may cost more than the stock filter, depending on the specific vehicle make and model.

2. Potential for Check Engine Light: In some cases, installing an aftermarket air intake filter may trigger the check engine light due to changes in airflow readings. However, this is usually not a cause for concern and can be resolved by resetting the engine codes.

3. Potential for Decreased Fuel Economy: Although the increased engine performance can lead to better fuel efficiency in some cases, in others it may result in decreased fuel economy due to the engine running more efficiently and using more fuel.

4. Potential for Increased Cabin Filter Replacement Frequency: The improved filtration of the E-3040 RK-Series air intake filter may result in a faster rate of cabin air filter clogging, requiring more frequent replacement.

In conclusion, the E-3040 RK-Series air intake filter offers several benefits, including enhanced filtration, increased engine performance, and a longer filter life. However, it may come with some drawbacks, such as a higher cost and potential for increased cabin filter replacement frequency. Ultimately, the decision to purchase this filter depends on your personal priorities and preferences. If improved engine performance and filtration are your top priorities, the E-3040 RK-Series air intake filter is a worthwhile investment. On the other hand, if you are more concerned with cost and minimal maintenance, you may opt for the stock filter instead.

Details:

Pleated design for high airflow, specially designed lip seal perfect seal, powder-coated aluminum bookplate that eliminates external breathers and a built-in, Dino-tuned velocity stack. 100% satisfaction guaranteed. K N Filters RK-Series Air Intake System Replacement Filter E-3040:: Complete intake assembly fits neatly behind the stock air cleaner cover. Provide a significant increase in airflow, smoother delivery to engine, while boosting performance and filtration.

Combined shipping available. Maintain factory appearance, utilizes the stock air cleaner outer cover. Feature a K N High-Flow air filter, pleated design for optimum airflow, specially designed lip seal perfect seal, powder-coated billet aluminum bookplate except PART #1010-0417 which is cast aluminum that eliminates external breathers and built-in, Dino-tuned velocity stack. Twin Cam version available in two height s: 1 5/8 tall stock or 2 1/4 large capacity Made the USA NOTES:C.A.R.B.

part #: e3040 prices

• $99.94-$104.99

specifications scoofilters:

• brand: K-n Filters
• mpn: E-3040
• base color: Black
• base color 2: Red
• base outside dimension: 9.375 L X 6.125 W
• base outside dimension 2: 238.00 Mm L X 156.00 Mm W
• 00 mm: 2, 25
• filter height 2: 2.25
• filter height 3: 57.00 Mm
• filter media material: Cotton Gauze
• graphics: Custom
• inside diameter: 8.063 L X 1.625 W
• inside diameter 2: 205.00 Mm L X 41.00 Mm W
• prop65: See Item Description
• type: Air Filter
• units: Each
• part type: Other
• alt mpn 1: 1011-1451
• alt mpn 2: 403040
• alt mpn 3: 606044
• alt mpn 4: Knne-3040
• category 1: Air Filters / Cleaners
• average delivery time: 2-3 Days
• package weight: 1.5000
• package length: 10.20
• package width: 10.00
• package height: 3.80
• manufacturer warranty: 90 Days

payments scooFilters:

• credit card: Discover
• wallet: Apple-pay
• other

offer scooFilters:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: March 21, 2026

returns scooFilters:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

seller scooFilters:

• # reviews: 516933
• city: Hilliard, Ohio
• rating: 99.6%

shipping scooFilters:

• cost: $0.00
• transit: 3-6 Days
• type: Calculated
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• class: Standard

general scooFilters:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Air Filters

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