Gearbox Oil Cooler PDK. Porsche 987.2 / 981 / 718 Boxster / Cayman › 9G230701700

PDK Gearbox Oil Cooler 

The PDK Gearbox Oil Cooler is a replacement heat exchanger designed to regulate transmission oil temperature in Porsche Boxster and Cayman models fitted with the PDK dual-clutch gearbox.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Boxster 981 2.7L 2012-16
• Porsche Boxster 981 S / GTS 3.4L 2012-16
• Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
• Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
• Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
• Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
• Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
• Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12
• Porsche Cayman 2.7L 981 2013-16
• Porsche Cayman S / GTS 3.4L 981 2013-16
• Porsche Cayman 718 2.0L PDK (300 Bhp)
• Porsche Cayman S 718 2.5L PDK (350 Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
• Porsche Cayman GTS 718 4.0L PDK (400 Bhp)

Diagram Ref No 25

It transfers excess heat from the gearbox oil to the vehicle's cooling system, helping maintain consistent transmission performance and protect internal components against overheating.

What Does It Do?

The gearbox oil cooler helps remove heat generated during PDK operation.

By transferring heat from the transmission oil to the engine cooling circuit, it helps maintain the correct operating temperature for reliable gearbox lubrication and performance.

Why Is It Important?

The Porsche PDK gearbox relies on controlled oil temperatures for efficient operation.

Excessive transmission heat can contribute to:

• Reduced gearbox performance
• Deterioration of transmission oil
• Increased internal component wear
• Gearbox overheating warnings
• Premature transmission damage

A correctly functioning oil cooler helps maintain stable operating temperatures.

Why Does It Fail?

Common causes of gearbox oil cooler failure include:

• Internal corrosion or deterioration
• Blocked coolant or oil passages
• Age-related damage
• Leaking seals or connections
• Internal heat exchanger failure

These problems can reduce cooling efficiency or allow fluid leakage.

When Should It Be Replaced?

Replace the gearbox oil cooler if:

• The heat exchanger is leaking
• Transmission temperatures are consistently excessive
• Cooling performance has deteriorated
• Internal oil and coolant contamination is confirmed
• The cooler is damaged during gearbox repairs

Always diagnose the cooling system and transmission before replacing the cooler.

Checks & Installation

Inspect the connecting oil pipes, coolant hoses and sealing rings before installation.

Replace damaged seals and follow Porsche workshop procedures when refilling and bleeding the cooling system.

Check the correct PDK oil level and inspect for leaks after installation.

Key Features

• Designed for selected Porsche 987.2, 981 and 718 models
• Helps regulate transmission oil temperature
• Transfers excess heat to the cooling system
• Supports reliable PDK gearbox operation
• Helps protect transmission components from overheating
• Replacement for leaking or damaged oil coolers
• Suitable for gearbox cooling system repairs

Porsche Boxster & Cayman PDK Gearbox Oil Coolers

Maintaining the correct gearbox oil temperature is essential for reliable Porsche PDK transmission operation.

The 9G230701700 gearbox oil cooler helps regulate transmission temperature in selected Porsche 987.2, 981 and 718 Boxster and Cayman models, protecting internal components against excessive heat.

Related reference numbers
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9G230701700

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