thermostat housing Genuine Porsche part 91110701500

Code: 91110701500

Genuine Porsche part

thermostat housing

The product code 91110701500 was also found on these diagrams

104-30 - regulator housing

engine lubrication auxiliary units for TYP 911/53/63/83/88 - 911 1973 ONWARDS

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• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

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Related products

Engine oil pump. Porsche 911 1977-89

91110700805/1

Product Information

Oil Pump

The Porsche 911 & 911 turbo Oil Pump is one of the most critical components within the engine's dry-sump lubrication system. Responsible for circulating oil throughout the engine, the oil pump ensures that vital moving components receive a continuous supply of lubricating oil, helping to minimise friction, control temperatures, and protect against premature engine wear.

Fits:

Porsche 911 1974-1977 2.7L
Porsche 911 1976-77 3.0 Carrera*
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1984-1986 3.2L
Porsche 911 1987-1989 3.2L G50
Porsche 911 1975-1977 3.0L Turbo (930)*

*Requires extra part No. 93010190200 Lid

Diagram Ref No 1

Unlike conventional wet-sump systems, Porsche's legendary dry-sump design relies heavily on the oil pump to both supply pressurised oil to the engine and scavenge oil back to the external oil tank. This constant circulation is essential for maintaining stable oil pressure under all driving conditions, particularly in high-performance and turbocharged applications.

Whether you're rebuilding an engine, restoring a classic Porsche, or replacing worn internal components, the 91110700805 oil pump plays a crucial role in maintaining engine reliability and long-term performance.

What Does the Oil Pump Do?

The oil pump is the heart of the Porsche lubrication system. It draws oil from the oil tank and distributes it under pressure to critical engine components including:

Crankshaft bearings
Connecting rod bearings
Camshafts and valve train components
Pistons and cylinders
Timing chains and associated components
Turbocharger lubrication systems (where applicable)

The pump also scavenges used oil from the engine and returns it to the oil tank, ensuring continuous circulation throughout the dry-sump system.

A correctly functioning oil pump helps:

Maintain stable oil pressure
Reduce internal engine wear
Support effective engine cooling
Ensure reliable lubrication under high-performance driving
Protect expensive engine components from damage

Why Does an Oil Pump Fail?

Although Porsche oil pumps are engineered for durability, wear can occur over time, especially in high-mileage engines or engines that have experienced poor maintenance.

Common causes of oil pump failure include:

Internal gear wear
Contamination from debris or metal particles
Oil starvation events
Poor maintenance history
Engine overheating
Excessive bearing material circulating through the oil system
Damage following engine failure
Wear to internal clearances reducing oil pressure

As oil pumps age, efficiency can decline, leading to reduced oil pressure and compromised lubrication performance.

When Should You Replace It?

Replacement should be considered whenever there are signs of oil pressure issues, excessive internal wear, or during major engine rebuild work.

Typical replacement scenarios include:

Full engine rebuilds
Low oil pressure diagnosis
Internal engine failure repairs
High-mileage engine restorations
Excessive wear found during engine inspection
Metal contamination within the lubrication system
Preventative replacement during performance engine builds

Because oil pump failure can lead to catastrophic engine damage, replacing a worn unit during rebuild work is often considered inexpensive insurance compared to the cost of a complete engine failure.

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

91110700805

PS9314

91110700805

1613100200

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