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Porsche 993 (911) (1994-1998) 993 (911) TURBO S 1994-97 Engine Rebuild Parts Fuel System Parts

Fuel Pumps

Fuel Pumps

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DISPLAYING 1 to 13 (of 13 products)
Domed Cap Nut Fuel Pump and Fuel Rail. Porsche 911 / 924S / 928 / 944 / 968 / 964 - 92811047504, 9281104750Y, 92811047500, 92811047501, 92811047503, 92811047505 - PHMEL
3
Domed Cap Nut Fuel Pump and Fuel Rail. Porsche 911 / 924S / 928 / 944 / 968 / 964
92811047505/1
Product Information
Product Information

Domed Cap Nut – Fuel Pump & Fuel Rail Fixing M12 x 15,5

High-quality domed cap nut designed for securing components within the Porsche fuel system, including the fuel pump and fuel rail assemblies.

Used across a wide range of models including Porsche 924S, 944, 968, 928, and 964, this cap nut provides a secure fastening solution while protecting exposed threads with its domed design. It plays an important role in maintaining the integrity and safety of fuel system connections.

Fits:

  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 38

Manufactured to OEM specifications, this component ensures precise fitment, corrosion resistance, and long-term durability—making it ideal for maintenance, repair, or restoration work.

Reference Number: 92811047505

Key Features

• Domed cap nut for fuel system applications
• Used on fuel pump and fuel rail assemblies
• Suitable for multiple Porsche models
• Protects threads while securing components
• OEM-style fit and finish
• Durable, corrosion-resistant construction

Function and Purpose

This cap nut is a key fastening component within the fuel system.

It helps to:

• Secure fuel pump and fuel rail components
• Protect threaded studs from damage and corrosion
• Maintain safe and stable fuel system assembly
• Ensure proper sealing and fastening integrity

Why Replace Cap Nuts

Over time, hardware components can degrade or become damaged.

Common issues include:

• Corrosion or rust
• Rounded or damaged threads
• Loss of proper torque retention
• Compromised fastening security

Replacing worn hardware ensures reliable and safe system assembly.



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

92811047505
92811047504
9281104750Y
92811047500
92811047501
92811047503
92811047505

The product you are viewing cross references to these numbers
Fuel Pump and Fuel Rail Domed Cap Nut . Porsche 911 / 964 / 993 / 924A / 944 / 968 / 928 - 92811047504, 9281104750Y
2
Fuel Pump and Fuel Rail Domed Cap Nut . Porsche 911 / 964 / 993 / 924A / 944 / 968 / 928
Special Order item
92811047505
Product Information
Product Information
Fuel pump Cap Nut. M 12 x 15,5.

Fits:

  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 38

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

92811047505
92811047504
9281104750Y

The product you are viewing cross references to these numbers
Fuel pump bracket. Porsche 964 / 993 - 96435624902, 96435624903
3
Fuel pump bracket. Porsche 964 / 993
Special Order item
96435624903
Product Information
Product Information
Fuel pump bracket.

Fits:
Porsche 964 1989-94
Porsche 993 1995-98

Previous part numbers:
96435624902

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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

96435624903
96435624902
96435624903

The product you are viewing cross references to these numbers
Fuel pump check valve. Porsche 964 / 993 - 96462095100
2
Fuel pump check valve. Porsche 964 / 993
Special Order item
96462095100
Product Information
Product Information
Fuel pump check valve.

Fits:
Porsche 964 C2 / C4 / RS - 1989 to 1994
Porsche 993 C2 / C4 / Carrera S / Carrera 4S / RS - 1994 to 1997
Porsche 993 turbo - 1994 to 1996

Click 'Zoom in' for large parts diagram.
Diagram ref no 37

Related reference numbers
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96462095100
96462095100

The product you are viewing cross references to these numbers
Fuel pump check valve. Porsche 964 / 993 - 96462095100 - 1615250400
2
Fuel pump check valve. Porsche 964 / 993
96462095100/1
Product Information
Product Information
Fuel pump check valve.

Fits:
Porsche 964 C2 / C4 / RS - 1989 to 1994
Porsche 993 C2 / C4 / Carrera S / Carrera 4S / RS - 1994 to 1997
Porsche 993 turbo - 1994 to 1996

Click 'Zoom in' for large parts diagram.
Diagram ref no 37

Related reference numbers
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96462095100
96462095100

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Fuel pump housing cap. Porsche 964 / 993 - 96535639101
3
Fuel pump housing cap. Porsche 964 / 993
Special Order item
96535638900
Product Information
Product Information
Fuel Pump Housing.

 

Fits:
Porsche 964 1989-94
Porsche 993 1995-98

Click 'Zoom in' for large parts diagram.
Diagram Ref No 3.



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

96535638900
96535639101

The product you are viewing cross references to these numbers
Fuel pump housing. Porsche 964 / 993 - 96535639101
4
Fuel pump housing. Porsche 964 / 993
Special Order item
96535639101
Product Information
Product Information
Fuel Pump Housing.

Fits:
Porsche 964 1989-94
Porsche 993 1995-98

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.

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

96535639101
96535639101

The product you are viewing cross references to these numbers
Fuel pump. Porsche 964 / 993 / 928 - 96462010400, 0580464058, 8TF 358 302-821, 92860810401
1
Fuel pump. Porsche 964 / 993 / 928
Special Order item
92860810406
Product Information
Product Information
Fuel pump.

Fits:
Porsche 964 1990-94
Porsche 993 1994-97
Porsche 928S2 4.7L 1983-86 (M28.19/20 - M28.21/22)
Porsche 928 GT / GTS 1989-95


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

92860810406
96462010400
0580464058
8TF 358 302-821
92860810401

The product you are viewing cross references to these numbers
Fuel pump. Porsche 964 / 993 / 928 - 96462010400, 0580464058, 8TF 358 302-821, 0580464206, 0580464057, 0580464058, 92860810401, 92860810403, 92860810406, 92860810408
2
Fuel pump. Porsche 964 / 993 / 928
92860810406/1
Product Information
Product Information
Fuel pump.

Fits:
Porsche 964 1990-94
Porsche 993 1994-97
Porsche 928S2 4.7L 1983-86 (M28.19/20 - M28.21/22)
Porsche 928 S4 5.0L 1987-92
Porsche 928 GT / GTS 1989-95

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

92860810406
96462010400
0580464058
8TF 358 302-821
0580464206
0580464057
0580464058
92860810401
92860810403
92860810406
92860810408

The product you are viewing cross references to these numbers
Fuel pump. Porsche 964 / 993 / 928 - 96462010400, 0580464058, 8TF 358 302-821, 92860810401 - PS9324A
3
Fuel pump. Porsche 964 / 993 / 928
92860810406/2
Product Information
Product Information
Fuel pump.

Fits:
Porsche 964 1990-94
Porsche 993 1994-97
Porsche 928S2 4.7L 1983-86 (M28.19/20 - M28.21/22)
Porsche 928 GT / GTS 1989-95


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

92860810406
96462010400
0580464058
8TF 358 302-821
92860810401

The product you are viewing cross references to these numbers
Fuel Return Line, for Left Hand Drive (LHD). Porsche 993 911 C2 / C4 / RS / Turbo / GT2 1994-98 - 99335606302, 99335606301, 99335606303
3
Fuel Return Line, for Left Hand Drive (LHD). Porsche 993 911 C2 / C4 / RS / Turbo / GT2 1994-98
Special Order item
99335606303
Product Information
Product Information

Fuel Return Line by Porsche for left-hand-drive 993-generation 911 models manufactured from 1994 to 1998. Porsche part 99335606302 follows the original fuel-system layout and is listed for both early and later production groups.

Fits

  • Porsche 993 (911) 1994–1998
  • Porsche 993 (911) C2 1994–97
  • Porsche 993 (911) C4 1994–97
  • Porsche 993 (911) RS 1994–97
  • Porsche 993 (911) C2S 1994–97
  • Porsche 993 (911) C4S 1994–97
  • Porsche 993 (911) Turbo 1994–96
  • Porsche 993 (911) GT2 1994–97
  • Porsche 993 (911) Turbo S 1994–97

Check fitment for your specific vehicle (model, year, engine) before ordering. Confirm that the vehicle has the left-hand-drive configuration and compare the part number with the existing component or VIN-based catalogue information.

Diagram: fuel system 993 1994-98

What This Product Does

This pipe provides the return path within the original 993 fuel circuit. It forms part of the long fuel-system pipework routed between the front fuel-pump area and the rear-mounted engine.

Functions

  • Returns fuel through the designated side of the circuit
  • Links the relevant front and rear fuel-system sections
  • Follows the factory left-hand-drive routing
  • Interfaces with the original clamps and adjoining lines

Technical Details

  • Porsche part number: 99335606302
  • Catalogue description: return line
  • Steering layout: Left Hand Drive (LHD)
  • Exploded-catalogue position: 14
  • Diagram quantity: 1
  • Production notes: /LL -94 and /LL 95-

Symptoms of Fault

  • Noticeable fuel or vapour odour
  • Wet areas or staining near the pipework
  • Corrosion, impact damage or deformation
  • Deterioration around joints and connected hoses
  • Fuel residue beneath the vehicle

Why Replacement Matters

Fuel pipes can deteriorate through age, corrosion, heat cycles or damage caused during previous repairs. Any suspected leak requires immediate investigation because escaping fuel or vapour can create a fire risk. When fitting the replacement line, examine the adjacent clamps, mountings, seals and connected pipework, then test the completed system for leaks using the correct workshop procedure.

FAQs

  • Is this return line for left-hand-drive vehicles?
    Yes. The supplied application and catalogue notation identify it for the left-hand-drive pipework arrangement.
  • Why are two production notes shown?
    The same part number appears against both /LL -94 and /LL 95- groups in the 993 fuel-system catalogue.
  • Should other components be checked during installation?
    Inspect the retaining clamps, rubber mountings, seals and neighbouring fuel lines while they are accessible.
  • Can the car be driven if a fuel leak is suspected?
    No. Do not start or drive the vehicle until the fuel system has been inspected and repaired by a suitably qualified technician.


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

99335606303
99335606302
99335606301
99335606303

The product you are viewing cross references to these numbers
Rubber mount for control unit relay fuse box. Porsche 911 78-89 / 964 / 993 - 9330014, 99970338400, 99970338401
5
Rubber mount for control unit relay fuse box. Porsche 911 78-89 / 964 / 993
99970338401/1::1
Product Information
Product Information
Rubber mount for control unit relay fuse box.
Sold each.

Fits:
Porsche 911 1978-86 (3 pcs per car)
Porsche 911 1987-89 (2 pcs per car)
Porsche 964 1989-94 (3 pcs per car)
Porsche 964 Turbo 1991-94 (2 pcs per car)
Porsche 993 1995-98 (3 pcs per car)
Porsche 993 Turbo 1995-98 (3 pcs per car)

Click 'Zoom in' for large parts diagram.
Diagram ref no 21 (911) / no 12 (964) / no 15, 16 (964 Turbo) / no 12 (993)

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

99970338401
9330014
99970338400
99970338401

The product you are viewing cross references to these numbers
Rubber mount for control unit relay fuse box. Porsche 911 78-89 / 964 / 993 - 9330014, 99970338400, 99970338401
5
Rubber mount for control unit relay fuse box. Porsche 911 78-89 / 964 / 993
Special Order item
99970338401::1
Product Information
Product Information
Rubber mount for control unit relay fuse box.
Sold each.

Fits:
Porsche 911 1978-86 (3 pcs per car)
Porsche 911 1987-89 (2 pcs per car)
Porsche 964 1989-94 (3 pcs per car)
Porsche 964 Turbo 1991-94 (2 pcs per car)
Porsche 993 1995-98 (3 pcs per car)
Porsche 993 Turbo 1995-98 (3 pcs per car)

Click 'Zoom in' for large parts diagram.
Diagram ref no 21 (911) / no 12 (964) / no 15, 16 (964 Turbo) / no 12 (993)

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

99970338401
9330014
99970338400
99970338401

The product you are viewing cross references to these numbers
DISPLAYING 1 to 13 (of 13 products)
Also found on these pages
About Fuel Pumps

Fuel Pumps – Precision Fuel Delivery for Peak Porsche Performance

A fuel pump is the heart of your Porsche’s fuel delivery system, responsible for supplying pressurised fuel from the tank to the injectors or carburetors with pinpoint accuracy. It ensures consistent pressure and flow, allowing the engine to achieve smooth idling, rapid acceleration, and optimal fuel economy.

At Design911, we supply a full range of fuel pumps designed to meet the performance and reliability standards of Porsche vehicles — from classic air-cooled models to high-performance modern variants. Built from durable, corrosion-resistant materials with high-efficiency internal motors, our pumps deliver consistent flow rates even under demanding conditions, making them the ideal choice for both restoration and performance applications.

Whether you’re maintaining a 911, upgrading a Cayman GT4, or restoring a vintage 928, our manufacturer-quality fuel pumps ensure reliable performance, smooth starts, and consistent power delivery.

What Does a Fuel Pump Do?

The fuel pump is a critical part of your Porsche’s engine management system, delivering the correct volume and pressure of fuel to match the engine’s demands.

Core Functions:

  • Transfers fuel from the tank to the injectors or carburetors.
  • Maintains constant pressure, ensuring precise combustion.
  • Supports performance and efficiency across all RPM ranges.
  • Enables smooth engine starting and stable running.

An efficient fuel pump guarantees proper air-fuel ratios, cleaner combustion, and the signature responsiveness Porsche engines are known for.

Why Do Fuel Pumps Fail?

Fuel pumps are high-stress components that operate continuously under pressure, making them prone to wear and contamination over time.

Common Causes of Failure Include:

  • Fuel contamination from dirt, rust, or moisture in the tank.
  • Running low on fuel, causing overheating or cavitation.
  • Electrical connection issues leading to inconsistent voltage.
  • Internal motor wear or impeller damage from age.
  • Clogged filters or blocked lines, reducing pump efficiency.

Symptoms of a failing pump include engine hesitation, poor acceleration, long cranking times, loss of power, or stalling under load.

Why Replace with Precision-Engineered Fuel Pumps?

Replacing a worn or failing fuel pump restores reliable fuel pressure, smoother acceleration, and improved fuel efficiency. Our replacement pumps are built to match Porsche system tolerances, delivering dependable operation and extended lifespan.

Key Benefits:

  • Restores consistent fuel pressure and flow.
  • Improves performance and throttle response.
  • Prevents stalling, misfires, and starting issues.
  • Constructed with high-efficiency internal components.
  • Direct-fit design for easy installation and perfect compatibility.
  • Corrosion-resistant construction for long service life.

Ideal for both standard replacements and performance upgrades, these pumps ensure your Porsche’s fuel system performs at its absolute best.

Highlights:

  • Precision-engineered Porsche fuel pumps for all models.
  • Consistent fuel pressure for reliable engine operation.
  • Durable, corrosion-resistant construction.
  • Direct-fit replacement for easy installation.
  • Compatible with classic and modern Porsche vehicles.
  • Perfect for rebuilds, upgrades, or preventive maintenance.

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