1. Manifolds & Headers Offered
  2. sku: 4279687395363761
  3. ASI PERFORMANCE 3943872

ASI PERFORMANCE 3943872 Exhaust Manifold Kit Isb Qsb 5.9L 6B B5.9 3943871 3943875

fits model: B5, Cummins.

3943874 Asi Performance 3943872 Exhaust Manifold Kit Fit Cummins 5.9l 6b Isb Qsb B5.9 3943871 3943875

( Brand: Asi Performance ), ( Type: Exhaust Manifold ), ( Material: Cast Iron ), ( Manufacturer Part Number: 3943872 ), ( Color: Black ), ( Manufacturer Warranty: 1 Year ), ( Application Model: For Cummins 5.9l 6b Isb Qsb B5.9 ), ( Part Number 1: 3943875 3942259 3943874 ), ( Part Number 2: 3943872 3942225 3943871 )

Review ASI PERFORMANCE Exhaust Manifold Kit Fit 5.9l 6b Isb Qsb B5.9 fits CUMMINS B5

The ASI Performance Exhaust Manifold Kit (Part Numbers: 3943872, 6B ISB QSB B5.9, 3943871, and 3943875) is a top-tier solution for Cummins 5.9L engine owners seeking improved performance and durability. This manifold kit is meticulously engineered to replace the factory exhaust manifolds, delivering enhanced power and torque output while maintaining optimal engine efficiency.

Each manifold in this set is crafted from high-quality stainless steel, providing superior strength and resistance to corrosion and heat damage. The design of the manifolds enables a more efficient exhaust gas flow, reducing backpressure and allowing the engine to breathe more freely. This results in increased horsepower and torque, typically in the range of 10-20 horsepower and 20-30 ft-lbs of torque.

This exhaust manifold kit is specifically designed for Cummins 5.9L engines with 6-bolt manifolds, including ISB (Inline Six-Bolt) and QSB (Quad Six-Bolt) configurations. The precise engineering and manufacturing process ensures a perfect fit, eliminating the need for extensive modifications or custom fabrication.

The ASI Performance Exhaust Manifold Kit comes complete with all necessary gaskets and hardware for a straightforward installation process. This kit is an excellent upgrade for diesel enthusiasts who desire increased power and longevity for their Cummins 5.9L engine, making it a must-have for both daily drivers and high-performance applications.

In summary, the ASI Performance Exhaust Manifold Kit (Part Numbers: 3943872, 6B ISB QSB B5.9, 3943871, and 3943875) is a high-performance upgrade for Cummins 5.9L engines, offering improved power, durability, and efficiency. Crafted from stainless steel and designed for a perfect fit, this kit is an essential addition for any diesel enthusiast seeking to optimize their engine's potential.

Pros and Cons of buying a ASI Performance 3943872 Exhaust Manifold Kit for Cummins 5.9L 6B ISB QSB B5.9 Engines

Introduction:

The ASI Performance 3943872 exhaust manifold kit is designed for Cummins 5.9L 6B ISB QSB B5.9 engines. This component is crucial for the proper functioning of the engine, as it connects the engine cylinders to the exhaust system. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this exhaust manifold kit from ASI Performance.

Pros:

1. Improved Performance: The ASI Performance exhaust manifold kit is engineered to enhance the overall performance of your Cummins engine. It is designed to provide better flow and efficiency, allowing for increased horsepower and torque.

2. High-Quality Material: This exhaust manifold kit is made from high-quality materials, ensuring durability and longevity. ASI Performance uses cast iron for the manifold itself and stainless steel for the exhaust flanges, which are resistant to corrosion and heat damage.

3. Affordable: Compared to other aftermarket exhaust manifold options, the ASI Performance 3943872 kit is relatively affordable. This makes it an attractive choice for those looking to upgrade their engine without breaking the bank.

4. Easy Installation: The exhaust manifold kit comes with detailed instructions and all necessary hardware for installation. Most users report that the installation process is straightforward and can be completed in a few hours.

Cons:

1. Potential for Leaks: As with any exhaust manifold, there is a possibility for leaks. Proper installation and sealing are essential to prevent exhaust gases from escaping, which could lead to performance issues and potential safety hazards.

2. Adjustments May Be Required: Some users have reported that the exhaust manifold may require adjustments to fit correctly. This could involve minor modifications to the engine or exhaust system to ensure a proper seal and optimal performance.

3. Limited Warranty: ASI Performance offers a limited warranty on their exhaust manifold kit. While it covers defects in materials and workmanship, it does not cover issues related to installation or normal wear and tear.

Conclusion:

The ASI Performance 3943872 exhaust manifold kit offers several advantages, including improved performance, high-quality materials, affordability, and easy installation. However, there are potential drawbacks, such as the possibility of leaks and the need for adjustments. Ultimately, the decision to purchase this exhaust manifold kit depends on your individual needs, budget, and technical ability. If you are comfortable with the installation process and are looking for an affordable upgrade to your Cummins engine, the ASI Performance 3943872 exhaust manifold kit could be a worthwhile investment.

Recommendation:

If you decide to purchase the ASI Performance 3943872 exhaust manifold kit, be sure to follow the installation instructions carefully and take the necessary precautions to prevent leaks. Additionally, consider investing in a high-quality exhaust sealer or gasket to ensure a proper seal and optimal performance. Regular maintenance and checks will also help ensure the longevity of the manifold and the overall health of your engine.

part # 3943872 price

  • $184.95

specifications maniheader:

  • for models: B5, Cummins
  • brand: Asi Performance
  • type: Exhaust Manifold
  • material: Cast Iron
  • manufacturer part number: 3943872
  • color: Black
  • manufacturer warranty: 1 Year
  • application model: For Cummins 5.9l 6b Isb Qsb B5.9
  • part number 1: 3943875 3942259 3943874
  • part number 2: 3943872 3942225 3943871

shipping maniheader:

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

seller maniheader:

  • rating: 100.0%
  • # reviews: 10115

payments maniheader:

  • wallet: Google-pay
  • credit card: Diners-club
  • other

offer maniheader:

  • started: March 9, 2025
  • sold: 0
  • availability: In Stock
  • quantity: 6
  • options: Ship-to-home
  • best offers: True

returns maniheader:

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

general maniheader:

  • condition: New
  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
for models: b5, cummins, type: exhaust manifold, manufacturer warranty: 1 year, application model: for cummins 5.9l 6b isb qsb b5.9, part number 1: 3943875 3942259 3943874, part number 2: 3943872 3942225 3943871,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, color: black, material: cast iron, sku: 4279687395363761,

Asi Performance 3943872 Is Similar To:

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5 offers $184.95–$184.95 USD
  • Offer #1: $184.95 price + free delivery = $184.95* total. This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. Part No.2: 3942259.FREE SHIPPING
  • Offer #2: $184.95 price + free delivery = $184.95* total.FREE SHIPPING
  • Offer #3: $184.95 price + free delivery = $184.95* total.FREE SHIPPING
  • Offer #4: $118.70 price + free delivery = $118.70* total. 1 Year warranty against manufacture defect For Cummins 5.9L 6B ISB QSB B5.9 Repalce Part Number: 3942259.FREE SHIPPING
  • Offer #5: $69.00 price + free delivery = $69.00* total. (Except the pre-sale products and special cases). Part No.: 3942225.FREE SHIPPING