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Water / Coolant Radiators
By OE Match
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This OE Match Water Radiator Set includes both left and right water radiators - designed as direct-fit replacements for the original factory cooling cores on Porsche 996 (911) & 986 Boxster models. Together they form the central cooling system components responsible for controlling engine temperature and preventing overheating.
SET OF 2
Fits:
Porsche 996 C2 / C4 / GT3 1997 - 2005
Porsche 986 Boxster 1997 - 2004
The cooling system of the Porsche 996 and 986 is based on two radiators (left and right) that effectively remove heat from the engine coolant under all operating conditions, from everyday driving to dynamic use on the road.
Each radiator is engineered to match original Porsche specifications for:
• Core dimensions and fin density
• Mounting points and hose connections
• Coolant flow capacity
• Heat transfer performance
This OE Match radiator set delivers balanced cooling and thermal stability by replacing both cores at once, ensuring equal efficiency on each side of the system. Manufactured from high-quality materials with durable aluminium cores and corrosion-resistant tanks, these radiators offer long service life and effective heat rejection with reliable fitment.
Direct replacement for the original Porsche components, this set installs using the existing mounting brackets, hoses, and hardware, making it ideal for cooling system overhauls, radiator failure replacement, or preventative maintenance on higher-mile vehicles.
A failing radiator can lead to engine overheating, coolant loss, reduced performance, and even engine damage if left unaddressed. Symptoms such as rising temperature gauge readings, coolant leaks, or steam from the engine bay indicate a compromised cooling core. Replacing both radiators as a matched set ensures consistent cooling efficiency and balanced performance across the entire system.
Replace this radiator set if you notice:
• Persistent engine overheating
• Leaks or corrosion on radiator cores
• Bent, dented, or clogged cooling fins
• Reduced heater performance
• After front-end collision or cooling system service
• During routine coolant system overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADKIT99606
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This package includes two radiator cooling fans - one for the left and one for the right side. Upgrading an aging cooling system by replacing both fans at once for consistent performance and longevity.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2, C4, GT3 1998 - 2005
Diagram ref no 2.
The purpose of this radiator cooling fan is to draw air through the radiator and air conditioning condenser when the vehicle's speed is low - for example, when idling or in traffic - helping maintain the proper coolant and cooling system temperature. This keeps the engine cool and the air conditioning system operating efficiently.
Key benefits of paired replacement:
• Ensures symmetrical airflow and balanced cooling efficiency.
• Reduces load on each fan, potentially extending lifespan compared to a single fan doing all the work.
• Provides redundancy - if one fan fails, the second may help prevent immediate overheating during transit or cooldown.
• Simplifies maintenance by replacing both fans together, avoiding mismatched wear and preserving consistent airflow characteristics.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99662413500
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This OE Match Radiator Water + A/C Condenser & Desiccator Set is a complete cooling and climate control core replacement solution for Porsche 986 Boxster and 996 911 models equipped with factory air conditioning. It combines the essential engine cooling radiators with the front A/C condenser and desiccator (receiver drier) — components that work together to manage engine and HVAC temperatures efficiently.
Fits:
- Porsche 986 Boxster 1997 - 2004
- Porsche 996 C2 / C4 1998 - 2005
- Porsche 996 GT3 MKI
- Porsche 996 GT3 MKII
- Porsche 996 GT3 RS
Kit Includes:
• OE Match Water Radiators (Left & Right) – 99610613181 & 99610613251
• OE Match Air Conditioning Condensers (Left & Right) – 2x 9975739101
• OE Match A/C Desiccator / Receiver Drier – 94457314301
• All necessary mounts, fittings, and brackets for direct replacement - 99970743441 & 99970726240
This set is ideal for:
• Cooling system overhauls
• A/C performance restoration
• Radiator and condenser replacement due to damage or age
• Preventative maintenance on high-mileage vehicles
Water Cooling System Components
The OE Match dual water radiators (99610613181 & 99610613251) replicate the original Porsche engine cooling cores, providing efficient heat exchange to maintain stable engine operating temperatures. Built with robust aluminium cores and corrosion-resistant tanks, these radiators handle long-term thermal cycling and high engine loads.
Air Conditioning Condenser & Desiccator
The OE Match A/C condenser is engineered to fit the factory A/C system, matching the original dimensions, port locations, and cooling capacity required for proper refrigerant condensation. Integrated within this module is the desiccator (receiver drier) - a critical component that removes moisture and contaminants from the refrigerant circuit, protecting the compressor and optimizing system efficiency.
Together, the radiators and condenser form the front-mounted heat exchangers that manage both engine coolant and A/C refrigerant heat rejection. With correct fitment and performance characteristics, this set restores proper engine temperature control and air conditioning cooling performance to factory expectations.
All components in this set are OE Match quality - meaning they are engineered to match original Porsche forms, fitments, and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADKIT996-986.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04

Fits:
Porsche 996 C2 / C4 / GT3 1997-05
Porsche 986 Boxster 1997-2004
Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.
Click 'Zoom in' for large parts diagram.
Diagram ref no 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610613
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This radiator cooling fan is a direct-fit OE Match replacement part for older Porsche 911 996 and Porsche Boxster 986 models. Designed to OE dimensions and specifications for proper fitment and clearance. Restores cooling efficiency and A/C performance.
Sold each, 2 required per vehicle.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2, C4, GT3 1998 - 2005
Diagram ref no 2.
The purpose of this radiator cooling fan is to draw air through the radiator and air conditioning condenser when the vehicle's speed is low - for example, when idling or in traffic - helping maintain the proper coolant and cooling system temperature. This keeps the engine cool and the air conditioning system operating efficiently.
• Plug-and-play installation: fits directly into the original fan housing (left or right depending on configuration) without modification.
As cooling fans age, their motors and bearings can wear out, their brushes may degrade, or blade balance may shift. This reduces airflow, which in slow traffic or hot conditions can cause elevated engine or coolant temperatures, risking overheating or reduced A/C performance. A correct replacement fan ensures reliable cooling, protects the engine and maintains comfort and safety.
When to replace:
• Fan fails to activate when hot / radiator temperature rises
• Fan runs loudly, rattles or vibrates - indicating worn bearings or balance issues.
• Car overheats or A/C performance drops during low-speed driving or idle.
• Original fan removed or damaged during cooling-system maintenance (radiator, hoses, etc.).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99662413500
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
The Series Resistor (OEM Part Number 996.616.101.00) is an essential component in the cooling system of Porsche 986 Boxster and 996 Carrera models. It controls the speed of the auxiliary radiator fan, allowing for both low and high-speed operation to keep your engine running at optimal temperatures.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 GT3 / GT3 RS 1999 - 2005
Diagram Ref No 4.
Why Replace Your Series Resistor?
Over time, heat and wear can cause the resistor to fail, leading to:
• Low-Speed Fan Failure: The fan may stop operating at low speeds, causing the engine temperature to rise.
• Erratic Fan Operation: The fan could run intermittently or at incorrect speeds, reducing cooling efficiency.
• Risk of Overheating: Poor cooling can result in engine overheating, potentially damaging critical components.
Common Symptoms of a Failing Resistor
• Fan Speed Issues: One fan may only operate at high speed, indicating a faulty resistor.
• Complete Fan Failure: In some cases, the fan may not activate at all.
• Persistent Engine Heat: Consistently high engine temperatures can signal a failing resistor.
Replacing a worn or damaged series resistor ensures your Porsche maintains proper cooling performance and protects your engine from overheating.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99661610100
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This is a used part which has been fitted and removed shortly after off the vehicle due to not meeting expectations of the customer. This part is in good working order. Ideal for restoration specialists, collectors, or workshops looking for components at reduced cost.
Condition:
This LEFT Radiator For Water Coolant Fluid is a briefly used part. It has some fitting imperfections but in good / reusable working order.
Please see the gallery of images before purchasing.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610613181
The product you are viewing cross references to these numbers
OEMatch Water / Coolant Radiators — Fit, Function, Confidence
OEMatch supplies water and coolant radiators for Porsche models. Radiators control engine temperature by transferring heat from coolant to air, helping to prevent overheating and limiting thermal stress on engine components. This overview explains common types, failure modes and what to check when a Porsche radiator needs replacement.
Available Types
- Aluminium-core radiators with welded construction for efficient heat transfer
- Radiators with reinforced end tanks for higher-load or heavy-use applications
- Application-specific units for transaxle and front-engine Porsche models, including designs tuned for cooling capacity and packaging
Understanding OEMatch Water / Coolant Radiators
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original water and coolant radiators. OE (Original Equipment) refers to parts matching original specifications for the water and coolant radiators and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM water and coolant radiators engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Radiators move heat from the engine coolant into the airstream via a core of tubes and fins; end tanks and joints direct flow and sustain pressure. Materials and construction influence resistance to corrosion, mechanical damage and thermal cycling. OEMatch catalogues thousands of part numbers and OE cross-references to support coverage across Porsche model lines and continues to expand its range for long-term vehicle support.
Benefits Include
- Restored cooling efficiency and consistent engine temperature control
- Reduced risk of overheating and related engine damage
- Improved longevity through corrosion-resistant materials and quality joins
Why Water / Coolant Radiators Wear and Fail
- Corrosion and internal scale from old or contaminated coolant
- Leaks from cracked tanks, damaged cores or failed seals and joints
- Blockages caused by debris, oil contamination or coolant breakdown products
- Physical damage from road debris or impact
The Importance of Replacing with OEMatch Water / Coolant Radiators
A compromised radiator reduces cooling capacity and raises the risk of overheating, which can lead to costly engine repairs and degraded performance. Choosing a replacement designed for Porsche applications restores correct coolant flow and heat transfer, maintains engine operating temperature and supports reliable day-to-day use and spirited driving alike.
Advantages
- Aluminium cores and precision joins that support efficient heat exchange
- Reinforced end tanks and durable connections for leak resistance
- Manufactured to original-spec dimensions and tolerances so fitment aligns with factory mounting and cooling system routing
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, and confirm correct hose connections, clamps and coolant specification after fitting.