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Fuel Filters

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99611025301/2
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Product Information

Fuel filter for Porsche 996 Carrera 2 3.4 and Boxster 986 models by Mann Filters, for selected 1997–2002 applications.

What This Product DoesFuel filters trap debris, rust and other contaminants in the fuel supply to help protect the pump, lines and injectors, and to support stable fuel flow to the engine.

Functions

  • Filter contaminants from the fuel before it reaches the engine
  • Help protect fuel pumps and injectors from wear due to debris
  • Support consistent fuel pressure and flow to the engine
  • Contribute to smoother running by helping maintain clean combustion

Symptoms of Fault

  • Hesitation or flat spots under load
  • Poor starting or extended cranking
  • Loss of power at higher engine speeds
  • Surging or uneven running at cruise
  • Noisy fuel pump working against restriction

Why Replacement MattersFuel filters gradually clog with particles and deposits from the tank and fuel lines, especially on older vehicles or cars that have been stored. As restriction increases, the pump has to work harder and fuel delivery to the engine can become inconsistent, leading to drivability issues and potential damage to injectors. Renewing the filter as part of scheduled servicing or when investigating fuel delivery faults helps maintain stable fuel flow and supports reliable running. Mann Filters applications are developed to recognised industry standards for filtration and fitment on listed Porsche models.

Fits

  • Boxster 986/987/981 (1997–2016)
  • 996 (911) (1997–2005)
  • Boxster 986 2.5L 1997–99
  • Boxster 986 2.7L 1999–02
  • Boxster S 986 3.2L 1999–02
  • 996 C2 3.4L 1997–08/01


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99611025301
99611025301

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99611025301
Product Information
Product Information
Fuel filter. Porsche 996 Carrera C2 / Boxster 986

porsche

Fits:
Porsche 996 Carrera 2 1998-01 3.4L
Porsche Boxster 986 1997-01

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99611025301
99611025301

The product you are viewing cross references to these numbers
99611025301/1
Product Information
Product Information
Fuel filter.

mahle

Fits:
Porsche 996 Carrera 2 1998-01 3.4L
Porsche Boxster 986 1997-01

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99611025301
99611025301

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DISPLAYING 1 to 3 (of 3 products)
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About Fuel Filters

Fuel Filters – Essential Protection for Your Engine and Fuel System

Fuel filters are critical service components designed to remove dirt, rust, debris and contaminants from fuel before it reaches the engine. By ensuring only clean fuel passes through the fuel system, fuel filters protect injectors, fuel pumps and internal engine components from premature wear and damage.

At Design911, we supply high-quality fuel filters from trusted original equipment and OE-approved manufacturers, engineered to meet exact flow rates and filtration standards. Whether for routine servicing, preventative maintenance or performance reliability, replacing your fuel filter at the correct interval helps maintain smooth engine operation, fuel efficiency and long-term durability.

What Do Fuel Filters Do?

Fuel filters are installed within the fuel delivery system to trap harmful particles and impurities that can enter through fuel tanks, lines or during refuelling. Their key functions include:

  • Preventing dirt and debris from reaching fuel injectors
  • Protecting fuel pumps from internal wear
  • Maintaining correct fuel pressure and flow
  • Supporting clean combustion and smooth engine running

Modern fuel systems rely on precise tolerances, making effective filtration essential for performance and reliability.

Why Choose Quality Fuel Filters?

High-quality fuel filters are essential because they offer:

  • Correct filtration levels without restricting fuel flow
  • OE-spec construction and fitment accuracy
  • Durable housings and filter media for long service life
  • Reliable protection for injectors and fuel pumps

Using inferior or incorrect filters can lead to reduced performance, injector failure or fuel system damage. Choosing OE-quality fuel filters helps ensure consistent engine operation and long-term reliability.

When Should You Replace a Fuel Filter?

Fuel filters should be replaced when:

  • Following manufacturer-recommended service intervals
  • Experiencing rough running, hesitation or reduced performance
  • Replacing fuel pumps or injectors
  • Carrying out major or preventative servicing

Regular fuel filter replacement helps avoid costly fuel system repairs and ensures optimal engine efficiency.

At Design911, our fuel filters meet strict quality standards to support dependable servicing and professional workshop results.

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