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Coolant Hoses - Centre Section
By OE Match
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Fits:
Porsche 996 C4 3.4L / 3.6L
Kits comes with both supply and return hoses, breather pipes and all clips
Diagram ref: #10, #11, #5, #6, #23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT996C4
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
HVAC Heater Feed Hose – Feed
Restore the reliability of your Porsche's cooling and heating system with this OE Heater Feed Hose.
Fits:
- Porsche 996 C2 3.6L 09/01-2005 (Tiptronic only)
- Porsche 996 C4 3.6L 09/01-2005 (Tiptronic only)
- Porsche 996 C4S 3.6L 09/01-2005 (Tiptronic only)
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
Diagram ref no 17
Designed to meet or exceed original equipment
specifications, this high-quality replacement hose carries hot engine coolant
from the engine to the heater matrix (heater core), enabling the HVAC system to
provide efficient cabin heating, rapid windscreen demisting and consistent
climate control performance.
Manufactured from premium automotive-grade rubber with reinforced construction, this OE Match hose is engineered to withstand the high temperatures, pressures and continual thermal cycling experienced within the Porsche cooling system. Offering excellent fitment and long-term durability, it provides an ideal replacement for ageing or deteriorated original hoses at a competitive price.
Whether you're repairing a coolant leak, refreshing the cooling system or carrying out preventative maintenance, replacing worn heater hoses helps maintain the reliability and efficiency of your Porsche.
What Does the Heater Feed Hose Do?
The heater feed hose forms part of the engine's coolant circuit, carrying heated coolant from the engine to the heater matrix located within the dashboard.
As warm coolant flows through the heater matrix, the
vehicle's blower motor forces air across it before directing the heated air
into the cabin. This allows the system to provide:
- Efficient interior heating
- Rapid windscreen demisting and defrosting
- Consistent climate control performance
- Comfortable cabin temperatures throughout colder months
Although relatively simple in design, the heater feed hose plays a vital role in both passenger comfort and the overall operation of the cooling system.
Why Do Heater Feed Hoses Fail?
Heater hoses operate in one of the harshest environments on the vehicle, continually exposed to high coolant temperatures, pressure fluctuations and engine vibration.
Over many years of service, the rubber gradually
deteriorates due to:
- Constant heating and cooling cycles
- Age-related hardening and loss of flexibility
- Internal degradation caused by coolant additives
- Surface cracking and perishing
- Swelling from contamination
- Fatigue around hose ends and retaining clips
- Abrasion against surrounding engine components
As deterioration progresses, small coolant leaks can develop before eventually leading to hose failure and rapid coolant loss.
When Should the Heater Feed Hose Be Replaced?
Because coolant hoses naturally age over time, Porsche specialists often recommend inspecting them during every major service and replacing them whenever significant cooling system work is undertaken.
Replacement is advised if you notice:
- Visible coolant leaks or staining
- Cracked, brittle or hardened rubber
- Bulging or swollen sections
- Dampness around hose connections
- A sweet coolant smell after driving
- Reduced cabin heating performance
- During engine-out repairs or cooling system refurbishment
- As preventative maintenance on older vehicles
Replacing ageing heater hoses before they fail can help prevent unexpected coolant loss, reduce the risk of engine overheating and avoid costly roadside breakdowns.
Porsche Cooling System & Heater Hoses
The cooling system on your Porsche does far more than regulate engine temperature. It also supplies heated coolant to the HVAC system, ensuring efficient cabin heating, effective windscreen demisting and year-round driving comfort.
As rubber hoses age, they gradually lose their elasticity and structural integrity, making them increasingly susceptible to leaks and sudden failure. Replacing heater hoses as part of routine maintenance is a sensible investment that helps maintain the integrity of the entire cooling system while reducing the risk of overheating caused by coolant loss.
OE Match replacement hoses are manufactured to provide factory-style fitment, dependable performance and excellent value, making them ideal for both routine servicing and complete cooling system overhauls.
Benefits of Replacing the Heater Feed Hose
Restores reliable coolant circulation Maintains efficient cabin heating Improves windscreen demisting performance Reduces the risk of coolant leaks Helps protect against engine overheating OE Match quality with factory-style fitment Ideal for preventative maintenance on ageing vehicles
Whether you're carrying out a routine service, repairing a coolant leak or restoring your Porsche to its original condition, Design911 supplies the trusted parts you need to keep your vehicle performing at its best.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610621275
The product you are viewing cross references to these numbers
OEMatch Coolant Hoses - Centre Section — Durability, Sealing, Performance
OEMatch centre section coolant hoses for Porsche models circulate coolant between key components to regulate engine temperature and reduce the risk of overheating. These hoses support continuous flow and system pressure in vehicles with mid- or rear-mounted cooling routing, helping maintain reliable thermal control during varied use.
Available Types
- Reinforced rubber centre section hose for standard cooling circuits
- Silicone centre hose for elevated temperature tolerance
- Complete centre pipe assembly with integrated fittings
Understanding OEMatch Coolant Hoses - Centre Section
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original coolant hoses - centre section. OE (Original Equipment) refers to parts matching original specifications for the coolant hoses - centre section and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM coolant hoses - centre section engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Centre section hoses connect the radiator, water pump and engine across the vehicle centre, ensuring continuous circulation and consistent temperature regulation. OEMatch maintains a Porsche-focused catalogue with over 4,000 part numbers and more than 8,700 OE cross-references to support model coverage.
Benefits Include
- Restored, leak-free coolant circulation
- Improved temperature control and engine protection
- Components selected for heat and pressure resistance in Porsche cooling systems
Why Coolant Hoses - Centre Section Wear and Fail
- Age-related rubber hardening and cracking from heat cycling
- Clamp or joint deterioration leading to leaks
- Chemical degradation from coolant contaminants or abrasion against nearby parts
The Importance of Replacing with OEMatch Coolant Hoses - Centre Section
A weakened or leaking centre section hose can cause coolant loss and temperature instability, increasing the risk of overheating and potential engine damage. Replacing worn hoses as part of routine maintenance helps preserve cooling system integrity, reduces the likelihood of disruptive failures and supports ongoing engine reliability in Porsche models.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Made to original-spec dimensions for consistent performance
- Compatible with common mounting points and sealing methods used in Porsche cooling systems
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. If fitting at home, protect nearby components and verify clamps and seals during reassembly.
