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Oil Pressure Senders / Switches
Fits:
Porsche 996 Carrera 3.4L / 3.6L 1998-05
Porsche 997 Carrera 3.6L / 3.8L 2005-08
This product supersedes Porsche's old part numbers:
- 99660620300
- 99660620301
Click 'Zoom in' for large parts diagram (Cylinder Head).
Diagram Ref No 32.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660620303
The product you are viewing cross references to these numbers
- 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 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
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12 Month Warranty
Worldwide Delivery
Engine oil pressure sender / switch
Mounted on the cylinder head, this component monitors pressure within the engine lubrication system and supplies the corresponding signal for the dashboard oil-pressure display and warning system.
Fits:
Porsche 996 Carrera 3.4L / 3.6L 1998 - 2005
Porsche 997 Carrera 3.6L / 3.8L 2005 - 2008
Diagram Ref No 32. (Cylinder Head)
Functions
- Monitors engine oil pressure
- Provides information to the dashboard pressure gauge
- Supports the low oil-pressure warning system
- Helps identify potentially unsafe lubrication conditions
Technical Details
- Brand: OE Match
- Porsche cross-reference: 99660620303
- Installation position: cylinder head
- Diagram location: cylinder head, reference number 32
Symptoms of Fault
- Oil-pressure gauge readings that fluctuate unexpectedly
- Gauge momentarily dropping to zero before recovering
- Warning light flickering at idle despite the correct oil level
- Pressure display remaining unusually high or low
- Intermittent readings associated with heat or vibration
- Oil seepage around the sender body or connection
Why Replacement Matters
A defective sender may produce inaccurate readings or false dashboard warnings. However, low oil pressure can also indicate a genuine lubrication fault, so the engine oil level and actual pressure should be checked before the sender is assumed to be the cause. A mechanical pressure test is the preferred method of confirming the engine's true oil pressure.
FAQs
- Does a flickering oil warning always mean the sender has failed?
No. Treat any oil-pressure warning as genuine until the oil level and actual pressure have been checked. - How can the sender be diagnosed?
Inspect the electrical connection and wiring, then compare the displayed reading with a mechanical oil-pressure gauge. - Should a leaking sender be replaced?
Yes. Seepage from the sender body or seal can worsen and allow oil to contaminate nearby components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660620303
The product you are viewing cross references to these numbers
- 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 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
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 996 Turbo 2001-05
Porsche 996 GT3 / GT3 RS 2001-05
This product supersedes Porsche's old part numbers:
- 99660620300
- 99660620301
Click 'Zoom in' for large parts diagram.
Diagram Ref No 45.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660620303
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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12 Month Warranty
Worldwide Delivery
This OE Match oil pressure sensor / switch is mounts at the oil filter housing and replaces the earlier Porsche references 99660620300 and 99660620301.
Fits:
Porsche 996 Turbo 2001 – 2005
Porsche 996 GT3 / GT3 RS 2001 – 2005
Diagram ref no 45
What This Product Does
The sender monitors pressure within the engine lubrication system and provides the electrical signal used by the vehicle's oil-pressure display and warning system. Correct sender operation allows the driver to identify a potential pressure problem without misleading or intermittent readings from a defective component.
Functions
- Monitors engine oil pressure
- Provides an electrical signal for the dashboard display
- Supports operation of the oil-pressure warning system
- Replaces a leaking, damaged or unreliable sender
Technical Details
- Brand: OE Match
- Mounting position: oil filter housing
- Reference number: 99660620302
- Supersedes: 99660620300 and 99660620301
- Parts diagram reference: 45
Symptoms of Fault
- Oil-pressure gauge readings fluctuate unexpectedly
- Gauge briefly falls to zero and then recovers
- Oil warning light flickers despite the correct oil level
- Pressure reading remains unusually high or low
- Intermittent readings occur as the engine warms up
- Oil seepage is visible around the sender body or connection
Why Replacement Matters
A faulty sender can imitate a serious lubrication-system problem or prevent the dashboard from displaying reliable information. Actual low oil pressure can cause significant engine damage, so warning lights or abnormal readings should be treated seriously. Check the oil level and condition first, then verify the engine's true oil pressure with suitable test equipment before assuming that the sender is the only fault.
OE Reference
- 99660620302
- 99660620300
- 99660620301
FAQs
- Can a defective sender cause a false oil-pressure warning?
Yes. Electrical wear, internal failure or a poor connection can produce intermittent or inaccurate readings, although genuine pressure loss must be ruled out first. - How should an abnormal reading be checked?
Confirm the oil level and inspect for leaks. A mechanical pressure-gauge test can then be used to establish the engine's actual oil pressure. - Where is this sender installed?
It is fitted at the oil filter housing on the listed 996 Turbo and GT3 applications. - Does it replace earlier Porsche part numbers?
Yes. Reference 99660620302 supersedes 99660620300 and 99660620301.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660620303
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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12 Month Warranty
Worldwide Delivery
-
cylinder head 996 CARRERA 2/4 M96.01/02/04 UPTO 2001 103-00
-
cylinder head 996 CARRERA 2/4/4S M96.03 2002 ONWARDS 103-01
-
oil filter bracket 996 TURBO 2001-05 104-10
-
engine lubrication oil tank 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 104-05
-
intake distributor 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 107-10
Engine Oil Pressure Switches & Senders – Precision Monitoring for Porsche Engines
The engine oil pressure switch or sender unit is a vital component of your Porsche’s lubrication system. Its primary role is to monitor oil pressure and send signals to your dashboard, ensuring the engine always maintains sufficient lubrication. A properly functioning oil pressure sender safeguards against engine wear, overheating, and performance loss.
At Design911, we supply a full range of oil pressure switches and sender units for classic and modern Porsche models. Built from high-quality, heat-resistant materials, these components are designed for durability, accuracy, and consistent performance under demanding driving conditions.
Whether you’re restoring a classic 911, maintaining a Cayenne, or servicing a Cayman, our oil pressure senders and switches provide dependable pressure monitoring and peace of mind every time you drive.
What Do Oil Pressure Switches & Senders Do?
Oil pressure switches and senders work together to ensure your engine has the correct oil pressure for proper lubrication.
Core Functions:
- Monitor
oil pressure in the engine’s lubrication system.
- Transmit
readings or alerts to the vehicle’s dashboard gauge or warning light.
- Protect
engine components by warning of low oil pressure.
- Ensure stable oil circulation during all driving conditions.
Accurate oil pressure monitoring prevents engine damage and maintains optimal performance, making these parts essential to Porsche reliability.
Why Do Oil Pressure Switches & Senders Fail?
Over time, exposure to heat, vibration, and oil contamination can cause pressure switches and sensors to deteriorate or malfunction.
Common Causes of Failure Include:
- Oil
contamination clogging internal diaphragms or ports.
- Electrical
corrosion or connector failure.
- Seal
degradation, leading to oil leaks.
- Wear
and tear from repeated heat cycles.
- Faulty readings due to sensor fatigue or wiring damage.
Symptoms of a failing sender include flickering oil pressure lights, inaccurate gauge readings, oil leaks, or false low-pressure warnings, all of which can compromise performance or lead to unnecessary engine risk.
Why Replace Components?
A reliable oil pressure reading is crucial for the health of your Porsche engine. Replacing worn switches or senders with precision-engineered, high-quality components ensures dependable performance, accurate readings, and long-term protection.
Key Benefits:
- Restores accurate oil pressure readings.
- Prevents false dashboard warnings.
- Protects against engine wear and overheating.
- Constructed from heat- and corrosion-resistant materials.
- Direct-fit
design for easy installation and compatibility.
- Ideal for performance maintenance, rebuilds, or upgrades.
By replacing a faulty sender or switch, you’ll preserve accurate oil pressure data and maintain the performance and longevity of your Porsche engine.
Highlights:
Precision-engineered
Porsche oil pressure senders and switches.
Reliable
oil monitoring for consistent engine protection.
Heat-
and corrosion-resistant materials for long life.
Direct-fit
compatibility for Porsche 911, Cayman, Boxster & Panamera.
Prevents
false warnings and ensures accurate oil pressure readings.
Perfect
for preventive maintenance or complete engine rebuilds.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed