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Gearbox Oil Cooler
The Porsche Automatic Transmission Oil Cooler 95530701701 is a genuine replacement gearbox oil cooler designed to help regulate automatic transmission fluid temperature on Porsche Cayenne applications.
Fits:
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Diagram Ref No 1
The cooler forms part of the Tiptronic transmission cooling system. As automatic transmission fluid circulates through the gearbox, it absorbs heat generated by the torque converter, internal clutches, gears and hydraulic system. The oil cooler removes excess heat from the fluid before it returns to the transmission.
Maintaining the correct ATF temperature is essential for reliable shifting, effective lubrication and long-term transmission durability.
This genuine Porsche replacement is suitable for replacing an original cooler that has become damaged, corroded, restricted or is leaking.
What This Product Does:
Automatic transmission fluid performs several important functions inside the gearbox, including lubrication, hydraulic control, cooling and transmitting force through the torque converter.
During normal driving, and particularly under heavy load, the transmission can generate considerable heat. The transmission oil cooler helps dissipate this heat and keep the ATF within its intended operating temperature range.
Its functions include:
- Cooling automatic transmission fluid
- Removing excess heat generated by the gearbox and torque converter
- Helping maintain a stable transmission operating temperature
- Protecting transmission fluid from excessive thermal degradation
- Supporting consistent hydraulic pressure and gear changes
- Helping protect internal transmission components
- Supporting reliable transmission performance under demanding conditions
- Maintaining efficient circulation through the transmission cooling circuit
The cooler itself does not control gear selection, but correct transmission temperature is important for proper operation of the complete Tiptronic system.
Symptoms Of Wear Or Failure:
Transmission oil coolers can deteriorate because of age, corrosion, impact damage, blocked cooling fins or internal restriction.
Common symptoms that may indicate a faulty or deteriorating transmission oil cooler include:
- Automatic transmission running hotter than normal
- Transmission overheating warnings
- Gear changes becoming harsh or inconsistent when hot
- Delayed engagement of Drive or Reverse
- Transmission performance deteriorating after prolonged driving
- ATF leaking from the cooler or connections
- Red or brown fluid visible beneath the vehicle
- Oily residue around the cooler or transmission cooling lines
- Visible corrosion on the cooler
- Bent or damaged cooling fins
- Physical impact damage
- Restricted airflow through heavily contaminated fins
- Darkened or burnt-smelling transmission fluid
- Transmission entering a protective or reduced-performance mode
Similar symptoms can be caused by low ATF level, damaged cooler pipes, thermostat problems or internal gearbox faults, so the complete transmission cooling circuit should be inspected before replacement.
Why Replacement Matters:
- Automatic transmissions are highly sensitive to excessive operating temperatures. If the oil cooler becomes blocked, damaged or inefficient, the transmission fluid may operate at higher temperatures than intended.
- Excessive heat accelerates ATF degradation and reduces its ability to lubricate, cool and operate the gearbox's hydraulic components effectively. Over time, this can contribute to increased wear of seals, clutches, bearings and other internal transmission components.
- A leaking cooler can also cause the ATF level to fall. Insufficient transmission fluid can lead to poor lubrication, hydraulic pressure problems, abnormal shifting and potentially serious gearbox damage.
- Replacing a damaged or restricted cooler helps restore effective heat dissipation and allows the transmission to operate within its intended temperature range. It can also help protect a considerably more expensive gearbox from damage caused by prolonged overheating or low fluid levels.
- Whenever the cooler is replaced, the associated transmission cooler lines, connections, seals and ATF condition should also be inspected.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95530701701
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
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12 Month Warranty
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Porsche Gearbox Oil Coolers | Maintain Optimal Transmission Temperatures for Peak Performance
A gearbox oil cooler is essential for regulating transmission temperature and ensuring consistent performance under demanding driving conditions. By circulating and cooling the gearbox oil, it prevents overheating, protects internal components, and extends the lifespan of your Porsche’s transmission.
At Design911, we supply high-quality gearbox oil coolers engineered to meet or exceed original design standards. Built from robust aluminium and high-efficiency cores, our coolers deliver superior thermal management and fluid flow — ideal for both road and track applications.
Whether you’re servicing your Porsche, replacing a leaking cooler, or upgrading for enhanced performance, our gearbox oil coolers ensure reliable cooling and protection for every mile.
What Do Gearbox Oil Coolers Do?
The gearbox oil cooler dissipates the heat generated during transmission operation, maintaining stable oil temperatures for optimal performance and protection.
Core Functions:
- Regulates gearbox oil temperature to prevent overheating.
- Ensures consistent lubrication and hydraulic performance.
- Protects seals, bearings, and internal components from heat damage.
- Enhances efficiency and performance under load.
- Extends the overall lifespan of the gearbox system.
Without a properly functioning oil cooler, the gearbox can overheat — leading to fluid breakdown, gear wear, and costly transmission damage.
Why Do Gearbox Oil Coolers Fail or Wear Out?
Gearbox oil coolers operate under high pressure and extreme heat. Over time, these conditions can cause blockages, corrosion, or leaks that reduce cooling efficiency.
Common Causes of Failure Include:
- Corrosion or internal degradation from moisture or contaminated oil.
- Leaks caused by damaged fittings or cracked cores.
- Blockages restricting oil flow and heat transfer.
- External damage from road debris or impact.
- Deterioration of hoses and seals over time.
When an oil cooler fails, symptoms can include rising gearbox temperatures, oil leaks, fluid contamination, or transmission warning lights — all signs that replacement is required.
Why Replace Your Porsche Gearbox Oil Cooler?
Replacing or upgrading your gearbox oil cooler is essential to maintain safe operating temperatures, prevent gearbox wear, and ensure consistent performance. Performance-grade oil coolers are especially beneficial for track, towing, or high-torque applications.
Key Benefits:
- Restores efficient gearbox temperature regulation.
- Prevents overheating and oil degradation.
- Improves transmission longevity and reliability.
- Reduces thermal stress on internal gearbox components.
- Designed for Porsche 911, Cayman, Boxster, Panamera, and PDK models.
- Ideal for standard servicing, rebuilds, and performance upgrades.
Regular inspection and timely replacement of the gearbox oil cooler help maintain optimal performance and avoid major gearbox repair costs.
Highlights
- Premium Porsche gearbox oil coolers engineered for reliability.
- Efficient heat dissipation for manual, Tiptronic, and PDK gearboxes.
- Durable aluminium construction with high-performance cores.
- Prevents overheating and extends gearbox lifespan.
- Perfect for maintenance, restoration, or motorsport applications.
- Direct-fit replacements compatible with a wide range of Porsche models.
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