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Expansion Tank Hoses
By OE Match
- 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 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Clamp D1 20x15 – Multi-Position Clamp
High-quality D1 20x15 clamp designed for securing various components across Porsche 924S, 944, 928, 964, and 993 models.
This versatile clamp is used in multiple applications including bonnet release cables (924S / 944), expansion tank hoses (944), engine wiring loom (928 S4), injection vacuum hoses (964), and brake reservoir connections (993).
Fits:
- 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 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram ref no 24
Manufactured to OEM specifications, this clamp ensures secure fitment, durability, and resistance to corrosion. Supplied individually, it is ideal for maintenance, repair, or restoration across multiple Porsche systems.
Key Features
• Clamp size D1 20x15
• Suitable for Porsche 964S, 944, 928, 964, and 993
• Part number 99951117701
• Multi-use: cables, hoses, wiring looms, vacuum lines
• Ensures secure mounting and routing
• Prevents vibration-related wear and movement
• Durable and corrosion-resistant construction
• OEM-style fit and performance
• Sold individually
Function and Purpose
This clamp is designed to secure a wide range of components.
It helps to:
• Hold cables, hoses, and wiring looms in place
• Maintain correct routing and alignment
• Prevent vibration-related wear or damage
• Protect sensitive systems such as wiring and vacuum lines
• Ensure long-term reliability across multiple systems
Why Replace Clamps
Clamps can degrade over time due to heat and environmental exposure.
Common issues include:
• Loss of clamping strength
• Corrosion or fatigue
• Movement of hoses, cables, or wiring
• Increased risk of system wear or failure
Replacing worn clamps ensures proper securing and protects critical components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99951117701
The product you are viewing cross references to these numbers
- 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
The OE Match Expansion Tank Hose is a high-quality replacement cooling system component designed to connect the coolant expansion tank to the engine cooling circuit. Manufactured to OE specifications for fit, durability and performance, this hose ensures the safe transfer of coolant and allows the cooling system to regulate pressure and coolant volume as temperatures change during engine operation.
Fits:
- 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
Diagram Ref No 21
Constructed from heat-resistant, coolant-resistant materials, the expansion tank hose is designed to withstand continuous exposure to high temperatures, pressure fluctuations and chemical additives found in modern coolant systems. It plays a critical role in maintaining cooling system efficiency, engine temperature control and overall reliability.
What This Product Does:
- Connects the coolant expansion tank to the cooling system.
- Allows coolant to flow between the expansion tank and engine cooling circuit.
- Helps regulate cooling system pressure.
- Accommodates coolant expansion and contraction during temperature changes.
- Supports efficient engine temperature management.
- Helps prevent coolant loss and system leaks.
- Maintains the integrity of the engine cooling system.
Symptoms Of Wear Or Failure:
- Visible coolant leaks around the hose or connections.
- Coolant drips beneath the vehicle.
- Low coolant level warnings.
- Engine overheating or rising coolant temperatures.
- Coolant residue or staining around hose fittings.
- Sweet coolant smell from the engine bay.
- Cracking, swelling, hardening or softening of the hose material.
- Bulging sections caused by internal deterioration.
- Loss of cooling system pressure.
Why Replacement Matters:
- Expansion tank hoses operate in demanding conditions and are constantly exposed to heat cycles, pressure fluctuations, coolant chemicals and environmental ageing. Over time, the hose material can become brittle, cracked, swollen or weakened, increasing the risk of coolant leaks and cooling system failure.
- A failing expansion tank hose can lead to coolant loss, reduced cooling system efficiency and overheating. If coolant levels drop significantly, critical engine components may be exposed to excessive temperatures, potentially resulting in costly engine damage. Even minor leaks can worsen over time and compromise overall vehicle reliability.
- Replacing a worn expansion tank hose restores proper coolant circulation and cooling system pressure management. An OE Match replacement provides factory-style fitment, dependable durability and long service life, helping maintain optimal engine operating temperatures and protecting your Porsche from cooling system-related issues.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410625100
The product you are viewing cross references to these numbers
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Fits:
Porsche 944 Turbo 1985-91
Click "Zoom in" to see the diagram.
Diagram ref no 35.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110625102
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 968 1992-95
Porsche 944 1985-91
Click 'Zoom in' for large parts diagram.
Diagram ref no 34.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95110624901
The product you are viewing cross references to these numbers
OEMatch Expansion Tank Hoses — Durability, Sealing, Performance
OEMatch Expansion Tank Hoses for Porsche models form part of the vehicle's cooling system, linking the coolant reservoir to the engine and radiator. Proper hose condition supports stable pressure and coolant recovery during temperature changes and reduces the risk of leaks or overheating.
Available Types
- Moulded hose assemblies designed for specific mounting routes
- Reinforced rubber hoses with beaded ends for clamp connections
- Silicone high-temperature hoses used in some applications
Understanding OEMatch Expansion Tank Hoses
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original expansion tank hoses. OE (Original Equipment) refers to parts matching original specifications for the expansion tank hoses and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM expansion tank hoses engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Expansion tank hoses transfer coolant between the reservoir and the cooling circuit, accommodating pressure and volume changes as the engine warms and cools. They must resist heat, coolant chemistry and pressure to maintain sealing at connectors and clamps. On Porsche models these hoses follow specific routing and often include shaped sections or moulded ends to fit tight clearances.
Benefits Include
- Restored coolant flow and pressure regulation
- Reduced risk of leaks and air ingress into the cooling system
- Improved temperature stability for the engine and ancillary components
Why Expansion Tank Hoses Wear and Fail
- Repeated heat cycles causing rubber fatigue and cracking
- Degradation from coolant additives and chemical exposure
- Failure of clamps, connections or moulded terminations leading to leaks
The Importance of Replacing with OEMatch Expansion Tank Hoses
A failing expansion tank hose can allow coolant loss, introduce air into the circuit or upset system pressure, any of which can lead to overheating and potential engine damage. Replacing worn hoses is a preventative maintenance task that helps maintain cooling system integrity and avoids secondary faults.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Selected for Porsche applications to suit original routing and clearances
- Supplied in materials chosen for resistance to coolant and heat exposure
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
