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Fuel Filter and Fittings
Protect your Porsche's fuel system with this OE Match Square Fuel Filter, manufactured as a direct replacement. Produced to OE-style specifications, this fuel filter is designed to remove contaminants, rust particles, dirt, and other debris from the fuel before it reaches the carburettors or fuel injection system, helping to maintain reliable engine performance and protect critical fuel system components.
Fits:
- Porsche 914 (1970-1976)
Over time, fuel filters gradually become restricted as contaminants accumulate within the filter media. A blocked or deteriorated filter can reduce fuel flow, affect engine performance, and place unnecessary strain on the fuel pump. Replacing the fuel filter at the recommended service intervals helps maintain clean fuel delivery and reliable engine operation. This OE Match square fuel filter is ideal for routine maintenance, fuel system repairs, and Porsche restoration projects.
What This Product Does:
- Removes dirt, rust, and debris from the fuel supply.
- Protects carburettors or fuel injection components from contamination.
- Maintains consistent fuel flow to the engine.
- Reduces strain on the fuel pump.
- Replaces clogged or deteriorated original fuel filters.
- Provides an OE-style fit and dependable quality.
Symptoms Of Wear Or Failure:
- Reduced engine performance.
- Hesitation during acceleration.
- Difficulty starting the engine.
- Engine misfires or uneven running.
- Reduced fuel flow.
- Visible contamination within the filter.
- Scheduled fuel system servicing or restoration work.
Why Replacement Matters:
- The fuel filter plays a vital role in protecting the engine by removing harmful contaminants before they can reach sensitive fuel system components. As the filter becomes restricted with debris over time, fuel flow can be reduced, resulting in poor engine performance, starting difficulties, and increased wear on the fuel pump and fuel delivery system.
- Replacing the fuel filter at regular service intervals helps maintain reliable fuel delivery, supports efficient engine operation, and protects expensive fuel system components from premature wear. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match square fuel filter provides the correct fit, dependable filtration performance, and long-lasting durability, making it an excellent choice for Porsche maintenance, repairs, and restoration projects.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
133133511
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
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12 Month Warranty
Worldwide Delivery
Restore the performance and reliability of your Porsche's fuel system with this Genuine Porsche Fuel Filter, manufactured to Porsche's original equipment specification and supplied under part number 311133511D. This precision-engineered fuel filter is designed to remove dirt, rust, and other contaminants from the fuel before it reaches the fuel pump, injectors, or carburettors, helping to protect critical fuel system components and maintain optimum engine performance.
Fits:
- Porsche 914 (1970-1974)
Diagram Ref No 9
The fuel filter is an essential service component that ensures a clean and consistent fuel supply. Over time, contaminants accumulate within the filter element, restricting fuel flow and reducing filtration efficiency. A blocked or deteriorated fuel filter can affect engine performance, increase fuel system wear, and place additional strain on the fuel pump. Replacing the filter at the recommended service intervals helps maintain reliable fuel delivery and prolong the life of the entire fuel system.
What This Product Does:
- Removes dirt, rust, and contaminants from the fuel supply.
- Protects the fuel pump, injectors, or carburettors from debris.
- Maintains consistent fuel flow to the engine.
- Supports optimum engine performance and efficiency.
- Helps extend the service life of fuel system components.
- Restores effective fuel filtration.
- Delivers Genuine Porsche fit, quality, and reliability.
Symptoms Of Wear Or Failure:
- Reduced engine performance.
- Hesitation during acceleration.
- Engine misfires or rough running.
- Difficulty starting the engine.
- Reduced fuel pressure.
- Increased strain or noise from the fuel pump.
- Restricted fuel flow caused by a blocked filter.
- Age-related deterioration of the original component.
Why Replacement Matters:
- The fuel filter plays a vital role in protecting your Porsche's fuel system by preventing contaminants from reaching sensitive engine components. A blocked or deteriorated filter can reduce fuel flow, impair engine performance, and accelerate wear of the fuel pump and fuel delivery system.
- Replacing the fuel filter restores efficient fuel filtration, maintains consistent fuel delivery, and helps protect expensive fuel system components from contamination. As a Genuine Porsche replacement part, it provides the correct fit, filtration efficiency, and long-term durability required to preserve the performance, reliability, and originality of your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
311133511D
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
Shop Securely
12 Month Warranty
Worldwide Delivery
Restore the performance and reliability of your Porsche's fuel system with this OE Match Fuel Filter, manufactured as a direct replacement. Produced to OE-style specifications, this high-quality replacement fuel filter is designed to remove dirt, rust, and other contaminants from the fuel before it reaches the fuel pump, injectors, or carburettors, helping to protect critical fuel system components and maintain optimum engine performance.
Fits:
- Porsche 914 (1970-1974)
Diagram Ref No 9
The fuel filter is an essential service component that ensures a clean, consistent fuel supply to the engine. Over time, contaminants become trapped within the filter element, gradually restricting fuel flow and reducing filtration efficiency. A blocked or deteriorated fuel filter can affect engine performance, increase strain on the fuel pump, and accelerate wear of the fuel delivery system. This OE Match replacement restores efficient filtration and reliable fuel flow, making it ideal for routine servicing and Porsche restoration projects.
What This Product Does:
- Removes dirt, rust, and contaminants from the fuel supply.
- Protects the fuel pump, injectors, or carburettors from debris.
- Maintains consistent fuel flow to the engine.
- Supports optimum engine performance and fuel efficiency.
- Helps extend the service life of fuel system components.
- Restores effective fuel filtration.
- Provides an OE-style fit and dependable performance.
Symptoms Of Wear Or Failure:
- Reduced engine performance.
- Hesitation during acceleration.
- Engine misfires or rough running.
- Difficulty starting the engine.
- Reduced fuel pressure.
- Increased fuel pump noise or excessive pump load.
- Restricted fuel flow caused by a blocked filter.
- Age-related deterioration of the original component.
Why Replacement Matters:
- The fuel filter is a vital component that protects your Porsche's fuel system by preventing contaminants from reaching sensitive engine components. A blocked or deteriorated filter can restrict fuel delivery, reduce engine performance, and place unnecessary strain on the fuel pump and fuel injection or carburettor system.
- Replacing a worn fuel filter restores efficient fuel filtration, maintains consistent fuel flow, and helps protect expensive fuel system components from premature wear. Manufactured to OE-style specifications, this OE Match replacement provides the correct fit, reliable filtration performance, and long-lasting durability, making it an excellent choice for Porsche maintenance and restoration.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
311133511D
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fuel Filters & Fuel Filter Fittings – Clean, Consistent Fuel Flow for Peak Porsche Performance
Fuel filters and fittings are critical components in maintaining your Porsche’s fuel system efficiency and engine longevity. The fuel filter removes impurities, debris, and moisture from the fuel before it reaches the injectors, ensuring clean combustion and optimal performance. Fuel filter fittings, such as hoses, clamps, and adapters, connect the filter to the system securely, ensuring leak-free, high-pressure operation.
At Design911, we supply a full range of precision-engineered fuel filters and fittings designed to meet manufacturer-level performance and reliability standards. Each component is built from high-grade materials to withstand modern fuels — including ethanol blends — ensuring consistent flow, corrosion resistance, and protection under demanding conditions.
Whether you’re maintaining a modern 911, rebuilding a classic air-cooled model, or preparing for motorsport, our manufacturer-quality filters and fittings help keep your Porsche running as smoothly and responsively as intended.
What Do Fuel Filters and Fittings Do?
Fuel filters and fittings ensure that only clean, contaminant-free fuel reaches the engine — a crucial factor for precise combustion, injector longevity, and throttle response.
Core Functions:
- Filter out debris, rust, and water from the fuel supply.
- Protect injectors and pumps from clogging or corrosion.
- Maintain consistent pressure throughout the fuel delivery system.
- Ensure safe, leak-free connections with quality fittings and seals.
A clean, well-filtered fuel supply preserves engine performance, efficiency, and emissions quality — vital for both classic and high-performance Porsche engines.
Why Do Fuel Filters and Fittings Fail?
Fuel filters and fittings are exposed to constant pressure, vibration, and contaminated fuels, especially in vehicles driven infrequently or using ethanol blends. Over time, wear and contamination can compromise performance.
Common Causes of Failure Include:
- Filter clogging from debris, varnish, or moisture accumulation.
- Corrosion or cracking in filter housings or metal fittings.
- Degraded rubber seals or hoses leading to leaks or pressure loss.
- Restricted flow causing poor acceleration and reduced power.
- Neglected maintenance intervals, allowing contaminants to pass through.
Symptoms of a failing filter system include hard starting, hesitation under load, poor fuel economy, or engine misfires.
Why Replace with Precision-Engineered Fuel Filters and Fittings?
Replacing your fuel filter and fittings ensures optimal fuel pressure, injector performance, and clean combustion. New components restore efficiency, reliability, and long-term protection for your Porsche’s engine.
Key Benefits:
- Restores consistent fuel flow and pressure stability.
- Protects injectors, pumps, and valves from contamination.
- Improves throttle response and fuel economy.
- Reduces risk of leaks or vapour lock.
- Crafted from corrosion-resistant, high-grade materials.
- Direct-fit compatibility for Porsche models of all generations.
Regular replacement is especially critical for classic and performance-tuned engines, where precision fuel metering is essential to maintain output and reliability.
Highlights:
- Premium-quality fuel filters and fittings for Porsche vehicles.
- High-flow, corrosion-resistant design for longevity.
- Filters microscopic debris and moisture for cleaner combustion.
- Secure fittings and seals for leak-free performance.
- Perfect for classic restorations or high-performance upgrades.
- Ensures fuel system reliability under all driving conditions.
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Saturday: Closed
Sunday: Closed