1. Motorcycle/Scooter Air Filters Deals
  2. sku: 6731965982593762
  3. BFO 4DLH78

BFO 4DLH78 Bolt Air Cleaner Kit

fits model: Sportster. make: Harley. year: 2004.

4dlh78 Bfo Bolt-on Air Cleaner System For Harley Xl Sportster 2004 Complete Kit Red

( Brand: Bfo ), ( Manufacturer Part Number: 4DLH78 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Features: Easy Installation ), ( Finish: Polished ), ( Fitment Type: Direct Replacement ), ( Items Included: Screws, Seal ), ( Manufacturer Warranty: 1 Year ), ( Material: Aluminum ), ( Mounting Style: Bolt-on ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Oe/oem Part Number: Air Cleaner Intake Filter System, For Harley Xl Sportster 2004-up ), ( Type: Air Cleaner Intake Filter System ), ( Universal Fitment: No )

Review BFO Bolt on Air Cleaner System For Harley Xl Complete Kit Red fits SPORTSTER 2004

Introducing the BOOSTFORCE BFO 4DLH78 Bolt-On Air Cleaner Kit, an excellent upgrade for Harley-Davidson XL Sportster models from the year 2004. This air cleaner assembly not only enhances the visual appeal of your motorcycle but also bolsters its performance.

The BOOSTFORCE BFO 4DLH78 kit comes with a high-flow, washable air filter element made from cotton gauze. This material offers superior filtration capabilities while allowing for easy maintenance. The air filter element can be washed, dried, and reused multiple times, making it a cost-effective and eco-friendly solution.

The air cleaner housing is made from durable, glass-reinforced polymer. This material provides excellent resistance to wear and tear, ensuring a long-lasting and reliable performance. The sleek, modern design not only complements the aesthetic of your Harley-Davidson XL Sportster but also enhances its overall appearance.

The BOOSTFORCE BFO 4DLH78 kit is designed to be a direct bolt-on replacement for the stock air cleaner assembly on your motorcycle. This means that no modifications are required for installation. The kit includes all necessary hardware for installation, making it a convenient and hassle-free upgrade.

The BOOSTFORCE BFO 4DLH78 air cleaner kit is designed to provide increased airflow to your engine. This results in improved combustion efficiency, leading to better performance and increased power output. The increased airflow also helps to keep your engine cooler during long rides, ensuring optimal performance and longevity.

In summary, the BOOSTFORCE BFO 4DLH78 Bolt-On Air Cleaner Kit is an excellent investment for Harley-Davidson XL Sportster owners from the year 2004. It offers superior filtration capabilities, improved performance, and a sleek, modern design. The kit is easy to install and includes all necessary hardware, making it a convenient and hassle-free upgrade for your motorcycle.

A bolt-on air cleaner, such as the BFO 4DLH78 kit for Harley-Davidson XL Sportster 2004 models, can offer several benefits and drawbacks for motorcycle enthusiasts. Here's a detailed analysis of each:

Benefits:

1. Improved Air Flow: Bolt-on air cleaners are designed to increase the volume of air that enters the engine. This results in more efficient combustion, which can lead to improved engine performance.

2. Enhanced Appearance: The BFO 4DLH78 kit boasts a sleek and modern design that can enhance the visual appeal of a Harley-Davidson XL Sportster.

3. Easy Installation: Bolt-on air cleaners do not require any major modifications to the engine or the bike's wiring system. This makes the installation process relatively simple and straightforward.

4. Increased Filtration: The BFO 4DLH78 kit comes with a high-performance air filter that can capture more dirt and debris, resulting in cleaner air entering the engine and increased engine life.

Drawbacks:

1. Cost: Bolt-on air cleaners can be more expensive than stock air cleaners. The BFO 4DLH78 kit, for instance, may cost several hundred dollars.

2. Potential Decrease in Fuel Economy: The increased air flow can lead to a slight decrease in fuel economy due to the engine running more efficiently.

3. Loudness: Some users have reported that the BFO 4DLH78 kit can make the bike louder, which may not be desirable for all riders.

4. Requires Regular Filter Maintenance: Since the high-performance air filter captures more dirt and debris, it will need to be replaced or cleaned more frequently than stock filters.

Conclusion:

The BFO 4DLH78 bolt-on air cleaner for Harley-Davidson XL Sportster 2004 models can provide significant performance improvements, enhanced appearance, and increased filtration. However, it comes with a higher cost, potential decrease in fuel economy, and increased loudness. Ultimately, the decision to purchase the BFO 4DLH78 kit depends on an individual's priorities and preferences.

Recommendation:

If you are looking for improved engine performance, enhanced appearance, and increased filtration for your Harley-Davidson XL Sportster 2004, the BFO 4DLH78 bolt-on air cleaner kit may be a worthwhile investment. However, consider the potential costs, fuel economy decrease, and increased loudness before making a purchase. It is always recommended to consult with a professional mechanic or Harley-Davidson dealership to ensure a proper installation and to discuss any potential concerns.

Details:

Bolt-On Air Cleaner System for Harley XL Sportster 2004 Complete Kit Red. For Harley XL Sportster 2004 -up. Brand new and of excellent quality.

7th, After Apr. Its a proven, high-performance bolt-on component that can dramatically improve the appearance and performance of your machine. Baseboard 1, Outer Cover 1, Element 1, Breather Bolt 2, Oil Tube 2, Air Box Spacer 3, Standoff 2, Shim 4, Screw 3, Nail 6. The forged air cleaner housing has built-in velocity stacking that both improves performance and enhances appearance.

Reusable high-flow air filter. One PC Air Filter with Accessories, Showing as the picture. Forged bi-metal back panel with rounded entry and hidden breather hardware. Next Day Delivery.

Type: Air Cleaner Intake Filter System, condition: Brand New, Fitment Direct Replacement, Material: Billet Aluminum, Color: Red. Includes all mounting hardware and spacers. This air filters provide the perfect combination of performance and design for your V-twin engine. The top is inverted and the sides are pleated to increase air flow.

A replacement inverted air filter is also provided.

specifications scoofilters:

  • for models: Sportster
  • for makes: Harley
  • brand: Bfo
  • mpn: 4dlh78
  • california prop 65 warning: California Prop 65 Warning
  • features: Easy Installation
  • finish: Polished
  • fitment type: Direct Replacement
  • items included: Screws, Seal
  • manufacturer warranty: 1 Year
  • material: Aluminum
  • mounting style: Bolt-on
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part
  • oe/oem part number: Air Cleaner Intake Filter System, For Harley Xl Sportster 2004-up
  • type: Air Cleaner Intake Filter System
  • universal fitment: No

payments scoofilters:

  • other
  • credit card: Discover
  • wallet: Paypal

offer scoofilters:

  • quantity: 7
  • sold: 0
  • availability: In Stock
  • best offers: True
  • started: September 7, 2025
  • options: Ship-to-home

general scoofilters:

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

returns scoofilters:

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

seller scoofilters:

  • city: Elk Grove Village, Illinois
  • rating: 99.3%
  • # reviews: 8145

shipping scoofilters:

  • carrier: FedEx
  • class: Standard
  • transit: 3-6 Days
  • cost: $0.00
  • type: Fixed
  • service: FedEx Ground / FedEx Home Delivery
for models: sportster, for makes: harley, california prop 65 warning: california prop 65 warning, features: easy installation, finish: polished, fitment type: direct replacement, items included: screws, seal, manufacturer warranty: 1 year, mounting style: bolt-on, note: no instruction included, notice: this is aftermarket replcement part, oe/oem part number: air cleaner intake filter system, for harley xl sportster 2004-up, type: air cleaner intake filter system, universal fitment: no,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery > air filters, material: aluminum, sku: 6731965982593762,

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