DOUGS HEADERS D104-B Header 694342543525

( Brand: Dougs Headers ), ( Part Type: Header ), ( Material: Steel ), ( Seller: Summit Racing Equipment ), ( Header Flange Thickness: 3/8 In. ), ( Header Style: Full-length ), ( Header Finish: High Temperature Black Paint ), ( Header Primary Tube Size: 1 7/8 In. ), ( Header Outlet Diameter: 3.500 In. ), ( Header Port Style: Sap ), ( Primary Tube Gauge: 16-gauge ), ( UPC: 694342543525 ), ( Manufacturer Part Number: D104-B )

Review DOUGS HEADERS Header

Doug's Headers D104-B is a high-performance exhaust header designed for select Ford applications, specifically the 4.6L 2V Modular V8 engine found in certain Ford Mustang and Lincoln models from the late 1990s and early 2000s. This header is an upgraded alternative to the stock exhaust system, engineered to deliver improved performance and enhanced exhaust flow.

The D104-B header is constructed primarily from 304L stainless steel, a material known for its strength, durability, and resistance to corrosion. This material ensures that the header can withstand the rigors of high-performance driving and the test of time. The header's design includes 1.650-inch primaries that merge into a 1.75-inch collector, which in turn feeds into a 2.5-inch exhaust system.

The Doug's Headers D104-B is a bolt-on header, making installation straightforward and hassle-free. It utilizes factory-style flanges to ensure a secure connection to the engine and the exhaust system. Additionally, the header comes with new gaskets to ensure a proper seal.

One of the primary benefits of the D104-B header is its ability to provide improved exhaust flow and scavenging, leading to increased power and torque. The header's design includes equal-length primaries, which help to ensure that all cylinders receive an optimal exhaust flow, resulting in more even power delivery. Furthermore, the collector and exhaust system are designed to minimize backpressure, allowing the engine to breathe more freely and deliver maximum performance.

In summary, the Doug's Headers D104-B is a high-performance exhaust header that provides numerous benefits for select Ford applications. Its construction from 304L stainless steel ensures durability and resistance to corrosion, while its bolt-on design makes installation straightforward. The header's ability to improve exhaust flow and scavenging leads to increased power and torque, making it an excellent upgrade for those seeking to enhance their Ford's performance.

Doug's Headers, specifically the D104-B model, is a popular aftermarket header option for Ford Mustang engines, particularly the Coyote and EcoBoost engines. Here are some pros and cons that could help you make an informed decision about purchasing this header system.

1. Increased Power: Doug's Headers are known for their ability to increase power by improving exhaust flow. The D104-B model, in particular, is designed to enhance power output by reducing exhaust backpressure and providing optimal exhaust scavenging.

2. Improved Performance: The header system can improve overall engine performance, leading to better throttle response, smoother power delivery, and increased torque.

3. High-Quality Construction: Doug's Headers are manufactured using premium materials, such as 321 stainless steel, ensuring durability and resistance to corrosion.

4. Easy Installation: The headers come with comprehensive installation instructions and are generally considered easy to install, even for those with minimal mechanical experience.

5. Enhanced Sound: The header system can provide a more aggressive exhaust note, which some enthusiasts find appealing.

1. Cost: Doug's Headers are a premium aftermarket option and can be quite expensive when compared to stock headers or other aftermarket alternatives.

2. Space Constraints: Installing headers in a confined engine bay, such as in a Mustang, can be challenging due to space constraints. This may require some modification or fabrication work, which could add to the cost and complexity of the installation.

3. Risk of Damage: Installing headers can carry a risk of damaging sensitive engine components, such as the catalytic converter or oxygen sensors, if not done correctly. Proper installation and precautions are necessary to avoid potential damage.

4. Potential Exhaust Leaks: Proper sealing is essential when installing headers to prevent exhaust leaks. Incorrect sealing can lead to performance issues and potential safety hazards.

Doug's Headers, including the D104-B model, offer several advantages, such as increased power, improved performance, high-quality construction, and an enhanced exhaust note. However, they also come with some drawbacks, including cost, space constraints, risk of damage, and potential exhaust leaks. Ultimately, the decision to purchase Doug's Headers depends on your personal preferences, budget, and technical expertise. If you are comfortable with the installation process and are willing to invest in a high-performance header system, Doug's Headers may be an excellent choice for your Ford Mustang. If not, alternative options may be more suitable for your needs and budget.

part # d104 prices

• $511.63-$1123.21

specifications maniheader:

• brand: Dougs Headers
• part type: Header
• material: Steel
• seller: Summit Racing Equipment
• header flange thickness: 3/8 In.
• header style: Full-length
• header finish: High Temperature Black Paint
• header primary tube size: 1 7/8 In.
• header outlet diameter: 3.500 In.
• header port style: Sap
• primary tube gauge: 16-gauge
• upc: 694342543525
• manufacturer part number: D104-B

offer maniheader:

• availability: In Stock
• quantity: 2
• sold: 0
• started: September 29, 2025
• options: Ship-to-home

shipping maniheader:

• cost: $0.00
• service: Economy
• transit: 2-4 Days
• class: Economy
• type: Fixed

returns maniheader:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

payments maniheader:

• other
• wallet: Google-pay
• credit card: Mastercard

seller maniheader:

• rating: 98.9%
• # reviews: 1131350

general maniheader:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers

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