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  3. MAC AUTO 139091

MAC AUTO PARTS 139091 Rear Front Manifold Converters 18122-18120 2.5L

fits model: Altima. make: Nissan. year: 2002–2004.

139091 Mac Auto Parts Front Manifold And Rear Made In Usa Converters For Nissan Altima 2.5l 02-04

( Brand: Mac Auto Parts ), ( Type: Catalytic Converter ), ( Placement On Vehicle: Front, Rear ), ( Manufacturer Part Number: 139091 ), ( Manufacturer Warranty: 10 Years ), ( Universal Fitment: No ), ( Ipn: 18122-18120 )

Review MAC AUTO PARTS Front Manifold And Rear Made In Usa Converters Nissan 2.5l fits ALTIMA 2002–2004

Introducing the Mac Auto 139091 Front Manifold Rear Converter for Nissan Altima 2.5L (2002-2004), a high-performance upgrade that's perfect for enhancing the efficiency and power output of your vehicle's engine. This front manifold rear converter is meticulously engineered to provide a superior fit and exceptional durability, ensuring a seamless installation and reliable operation.

The Mac Auto 139091 is a direct replacement for the factory front manifold, designed specifically for the Nissan Altima 2.5L models from 2002 to 2004. This converter features a modern, high-flow design that optimizes the airflow between the engine and the exhaust system, resulting in improved engine performance and increased power.

Constructed from premium materials, this front manifold rear converter boasts enhanced heat dissipation capabilities. Its robust design withstands the extreme temperatures and pressures generated during engine operation, ensuring a long-lasting and dependable performance.

Mac Auto's commitment to quality is evident in every detail of this front manifold rear converter. Its precise fit and flawless finish ensure that it seamlessly integrates with your vehicle's engine system, while its durable construction withstands the rigors of daily driving.

Upgrading your Nissan Altima 2.5L with the Mac Auto 139091 Front Manifold Rear Converter is a smart investment for those seeking improved engine performance, increased power, and enhanced durability. This component is backed by Mac Auto's unwavering commitment to customer satisfaction and industry-leading warranty coverage, giving you peace of mind and confidence in your purchase.

In summary, the Mac Auto 139091 Front Manifold Rear Converter for Nissan Altima 2.5L (2002-2004) is a top-tier performance upgrade that delivers improved engine efficiency, increased power output, and unmatched durability. Its precise fit, modern design, and robust construction make it the ideal choice for discerning Nissan Altima owners who demand the best from their vehicles.

Mac Auto 1.39091 Front Manifold Rear Converters for Nissan Altima 2.5L (02-04): A Detailed Analysis

Mac Auto Parts' 1.39091 Front Manifold Rear Converters are designed for Nissan Altima 2.5L vehicles from the years 2002 to 2004. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this product to help you make an informed decision.

Pros:

1. Improved Performance: Mac Auto's front manifold rear converters are designed to enhance the overall performance of your Nissan Altima. These converters allow for better flow of coolant between the engine and the radiator, potentially leading to improved engine cooling and increased horsepower.

2. OEM Quality: Mac Auto is a well-known aftermarket parts manufacturer, and their products are often considered to be of OEM (Original Equipment Manufacturer) quality. This means that the 1.39091 Front Manifold Rear Converters are likely to be well-built and long-lasting.

3. Affordable: Compared to purchasing an OEM replacement part from a dealership, the Mac Auto 1.39091 Front Manifold Rear Converters are often more affordable. This can save you money, especially if you're working on a budget.

4. Easy Installation: Many customers have reported that the installation process for these converters is straightforward and can be completed in a relatively short amount of time, even for those with limited mechanical experience.

Cons:

1. Potential Fitment Issues: While Mac Auto is known for their high-quality parts, some customers have reported fitment issues with their converters. It's essential to ensure that you order the correct part number for your specific vehicle to avoid any potential compatibility problems.

2. No Warranty: Unlike OEM parts, aftermarket parts like the Mac Auto 1.39091 Front Manifold Rear Converters do not typically come with a factory warranty. This means that any repairs or replacements would be the responsibility of the customer.

3. Potential Leaks: Some customers have reported leaks after installing the Mac Auto converters. Proper installation and the use of a high-quality coolant can help reduce the risk of leaks.

Conclusion:

The Mac Auto 1.39091 Front Manifold Rear Converters offer several advantages for Nissan Altima 2.5L (02-04) owners, including improved performance, OEM quality, affordability, and easy installation. However, there are also potential downsides, such as fitment issues, the lack of a warranty, and the risk of leaks. Ultimately, the decision to purchase these converters depends on your priorities, budget, and mechanical experience. If you're comfortable with the potential risks and are looking for an affordable way to enhance your Altima's performance, the Mac Auto 1.39091 Front Manifold Rear Converters could be a good choice. However, if you prefer the peace of mind that comes with a factory warranty, you may want to consider purchasing an OEM replacement part instead.

Recommendation:

If you decide to purchase the Mac Auto 1.39091 Front Manifold Rear Converters for your Nissan Altima 2.5L (02-04), make sure to double-check the part number to ensure proper fitment. Additionally, use a high-quality coolant and follow the installation instructions carefully to minimize the risk of leaks. If you're unsure about the installation process, consider seeking the help of a professional mechanic to ensure a proper and safe installation.

specifications mufflermooch:

  • for models: Altima
  • for makes: Nissan
  • for years: 2002-2004
  • brand: Mac Auto Parts
  • type: Catalytic Converter
  • placement on vehicle: Front, Rear
  • manufacturer part number: 139091
  • manufacturer warranty: 10 Years
  • universal fitment: No
  • interchange part number: 18122-18120

shipping mufflermooch:

  • type: Fixed
  • class: Expedited
  • service: Expedited
  • cost: $0.00
  • transit: 4-9 Days

seller mufflermooch:

  • # reviews: 190075
  • rating: 99.2%

payments mufflermooch:

  • other
  • wallet: Paypal
  • credit card: Diners-club

offer mufflermooch:

  • started: December 22, 2025
  • availability: In Stock
  • sold: 0
  • quantity: 10
  • options: Ship-to-home

general mufflermooch:

  • condition: New
  • Car Truck Parts Accessories > Exhaust Emission Systems > Catalytic Converters

returns mufflermooch:

  • paid by: Seller
  • time: 60 Days
  • policy: Returns Accepted
for models: altima, for makes: nissan, for years: 2002-2004, type: catalytic converter, placement on vehicle: front, rear, manufacturer warranty: 10 years, universal fitment: no,
category: auto parts > car truck parts accessories > exhaust emission systems > catalytic converters, sku: 10948910737049502,

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