Radiator and pipes replacement kit for Porsche 991.1 GT3 / RS 2014-16 › RADANDPIPEKIT991GT3.1.OE

Radiator and pipes replacement kit for Porsche 991.1 GT3 / RS 2014-16 - 99110613801, 99110613802, 99110664881, 99110664981, 99110653802, 99110653701

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Related to Water / Coolant Radiators for 991 (911) MK1 2012-2016

Kits

RADANDPIPEKIT991GT3.1.OE

Product Information

Radiator and pipes replacement kit
Complete Genuine Porsche centre radiator and coolant hose replacement kit for Porsche 991.1 GT3 3.8L (2014–2016) and 991.1 GT3 RS 4.0L (2015–2016). This comprehensive cooling system kit includes the original Porsche centre water radiator, left and right coolant hoses, and upper and lower rubber radiator mountings. Ideal for cooling system repair, radiator replacement or preventative maintenance.
Complete 7-piece kit – sold as one set.

Fits:
Porsche 991.1 GT3 3.8L 2014 - 2016
Porsche 991.1 GT3 RS 4.0L 2015 - 2016

Diagram ref no 1, 4, 5, 6 and 7

What This Kit Does
The Porsche 991.1 GT3 and GT3 RS use a high-performance engine cooling system designed to maintain stable operating temperatures during demanding road and track driving.

The centre radiator helps dissipate heat from the circulating engine coolant, while the connecting hoses allow coolant to flow through the radiator assembly.

The upper and lower rubber mountings hold the radiator securely in position and help isolate vibration from the surrounding structure.

Replacing these components together helps restore the original cooling system arrangement.

Key Features

Complete Genuine Porsche centre radiator replacement kit.
Includes one centre water/coolant radiator.
Supplied with left and right radiator coolant hoses.
Includes two upper and two lower rubber mountings.
Designed for first-generation Porsche 991 GT3 and GT3 RS models.
Supports efficient coolant circulation and engine temperature control.
Ideal for radiator repairs, cooling system refurbishment and track car maintenance.
Original Porsche components for factory-specification fitment.

Why Replace This Kit?
Radiators and coolant hoses are exposed to repeated temperature changes, cooling system pressure, road debris and vibration. Over time, the radiator core can become damaged or corroded, coolant hoses may deteriorate and rubber mountings can harden or split. A damaged centre radiator or leaking hose can lead to coolant loss, reduced cooling efficiency and increased risk of engine overheating.

Replacing the radiator, hoses and mounting supports together helps avoid retaining worn components during a major cooling system repair.

Common Reasons for Replacement

Coolant leaking from the centre radiator.
Damaged or corroded radiator core.
Cracked or deteriorated coolant hoses.
Low coolant warning.
Cooling system pressure loss.
Damaged or compressed radiator rubber mountings.
Front bumper or radiator impact damage.
Reduced cooling efficiency during demanding driving.
Complete centre radiator refurbishment.

Where It Fits on the Car
The kit fits within the front centre radiator assembly, located behind the front bumper. The radiator connects to the engine cooling system through the supplied left and right coolant hoses and is supported by the upper and lower rubber mountings.

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

RADANDPIPEKIT991GT3.1.OE

99110613801

99110613802

99110664881

99110664981

99110653802

99110653701

The product you are viewing cross references to these numbers

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Engine radiator. Porsche 981 Boxster / 981C Cayman / Porsche 991.1 Carrera

99110613

Product Information

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.

Fits:
Porsche 981 Boxster 2012 - 2016
Porsche 981SP Boxster Spyder 2016
Porsche 981C Cayman 2013 - 2016
Porsche 981C Cayman GT4 2016
Porsche 991.1 Carrera 2012 - 2016

Diagram ref no 1

The radiator functions as the primary heat exchanger in the vehicle’s cooling system. Coolant heated by the engine flows through the radiator’s tubes and fins, where it relinquishes heat to the surrounding air as it passes through. This heat transfer process is essential to prevent overheating, maintain ideal combustion conditions, protect internal engine components, and ensure consistent performance.

Function:
• Dissipates thermal energy from engine coolant via a network of tubes and cooling fins
• Works with the cooling fan and shroud assembly to optimise airflow and cooling efficiency
• Maintains stable engine operating temperatures under varying load and ambient conditions
• Ensures long-term reliability and protects the engine from heat-related wear or damage.

Genuine Porsche radiators are constructed from durable materials designed to withstand constant temperature changes, road vibration, and corrosion, ensuring sustained performance over time.

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

99110613

99110613103

99110613203

The product you are viewing cross references to these numbers

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Radiator and pipes replacement kit for Porsche 991.1 GT3 / RS 2014-16 › RADANDPIPEKIT991GT3.1.OE