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DISPLAYING 17 to 32 (of 36 products)
1 2 3
Oil Filter Housing O-Ring. Porsche 911 / 914 - 99970110050
2
Oil Filter Housing O-Ring. Porsche 911 / 914
Special Order item
99970110050
Product Information
Product Information
Oil Filter Housing O-Ring.
The Genuine Porsche Oil Filter Housing O-Ring 99970110050 is a replacement sealing ring designed to provide a secure, oil-tight seal at the oil filter housing on compatible Porsche applications.

Fits:
  • Porsche 911 1965-1968 2.0L
  • Porsche 911 1970-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 914 (1970-1976)  

Diagram Ref No 9

Although it is a small component, the O-ring plays an important role in the engine lubrication system. It prevents engine oil from escaping at the sealed connection and helps the lubrication system maintain its integrity during operation.

Repeated exposure to hot engine oil, pressure and temperature cycles can eventually cause the original O-ring to harden, flatten, crack or lose elasticity. Once this happens, oil can begin to seep or leak from the oil filter housing area.

What This Product Does:
The O-ring creates a seal between mating surfaces within the oil filter housing assembly.

When installed correctly, the O-ring is compressed to close the small clearance between components through which pressurised engine oil could otherwise escape.

A correctly functioning oil filter housing O-ring helps:

  • Prevent engine oil leakage
  • Maintain a secure oil filter housing seal
  • Keep oil contained within the lubrication system
  • Prevent oil contamination of surrounding engine components
  • Support correct lubrication-system operation
  • Maintain a clean and dry oil filter housing area

The correct dimensions and sealing specification are important because an incorrectly sized O-ring may leak even if it appears similar to the original component.

Symptoms Of Wear Or Failure:
O-rings gradually deteriorate through age, heat and repeated compression.

Common symptoms of a worn oil filter housing O-ring include:

  • Engine oil leaking around the oil filter housing
  • Oil seepage around the sealed joint
  • Damp or oily residue on surrounding components
  • Oil collecting beneath the engine
  • Gradual reduction in engine oil level
  • Burning-oil smell if leaked oil reaches hot components
  • O-ring becoming hard or brittle
  • Cracking or splitting
  • Flattened sealing surface
  • Cuts, nicks or deformation
  • Leakage appearing after oil filter servicing

A minor seep can gradually develop into a more significant leak as the seal continues to deteriorate.

Why Replacement Matters:
Engine oil is essential for lubricating and protecting internal engine components.

A leaking oil filter housing seal can result in gradual oil loss and contamination of surrounding components. If a significant leak is ignored and the engine oil level becomes too low, lubrication can be compromised.

Replacing a worn O-ring helps restore:

  • A secure oil-tight connection
  • Proper oil filter housing sealing
  • Engine oil retention
  • A cleaner engine compartment
  • Correct lubrication-system integrity
  • Protection against progressive oil loss

Addressing an oil leak promptly can also make it easier to identify any additional leaks elsewhere on the engine.



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

99970110050
99970110050

The product you are viewing cross references to these numbers
Oil Filter Housing O-Ring. Porsche 911 / 914 - 99970110050 - 40-76412-00
2
Oil Filter Housing O-Ring. Porsche 911 / 914
99970110050/1
Product Information
Product Information
Oil Filter Housing O-Ring.
The Victor Reinz Oil Filter Housing O-Ring is a replacement sealing ring designed to provide a secure, oil-tight seal at the oil filter housing on compatible Porsche applications.

Fits:
  • Porsche 911 1965-1968 2.0L
  • Porsche 911 1970-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 914 (1970-1976)  

Diagram Ref No 9

Although it is a small component, the O-ring plays an important role in the engine lubrication system. It prevents engine oil from escaping at the sealed connection and helps the lubrication system maintain its integrity during operation.

Repeated exposure to hot engine oil, pressure and temperature cycles can eventually cause the O-ring to harden, flatten, crack or lose elasticity. Once this happens, oil can begin to seep or leak from the oil filter housing area.

What This Product Does:
The O-ring creates a seal between mating surfaces within the oil filter housing assembly.

When installed correctly, the O-ring is compressed to close the small clearance between components through which pressurised engine oil could otherwise escape.

A correctly functioning oil filter housing O-ring helps:

  • Prevent engine oil leakage
  • Maintain a secure oil filter housing seal
  • Keep oil contained within the lubrication system
  • Prevent oil contamination of surrounding engine components
  • Support correct lubrication-system operation
  • Maintain a clean and dry oil filter housing area


Symptoms Of Wear Or Failure:
O-rings gradually deteriorate through age, heat and repeated compression.

Common symptoms of a worn oil filter housing O-ring include:

  • Engine oil leaking around the oil filter housing
  • Oil seepage around the sealed joint
  • Damp or oily residue on surrounding components
  • Oil collecting beneath the engine
  • Gradual reduction in engine oil level
  • Burning-oil smell if leaked oil reaches hot components
  • O-ring becoming hard or brittle
  • Cracking or splitting
  • Flattened sealing surface
  • Cuts, nicks or deformation
  • Leakage appearing after oil filter servicing

A minor seep can gradually develop into a more significant leak as the seal continues to deteriorate.

Why Replacement Matters:
Engine oil is essential for lubricating and protecting internal engine components.

A leaking oil filter housing seal can result in gradual oil loss and contamination of surrounding components. If a significant leak is ignored and the engine oil level becomes too low, lubrication can be compromised.

Replacing a worn O-ring helps restore:

  • A secure oil-tight connection
  • Proper oil filter housing sealing
  • Engine oil retention
  • A cleaner engine compartment
  • Correct lubrication-system integrity
  • Protection against progressive oil loss

Addressing an oil leak promptly can also make it easier to identify any additional leaks elsewhere on the engine.



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

99970110050
99970110050

The product you are viewing cross references to these numbers
Oil filter RED 'PUROLATOR'. Porsche 911 1972-89 / 964 Carrera 1989-94 / 930 Turbo - 91610775400, 93010776400, 93010776401, 93010776403 - OC59
3
Oil filter RED "PUROLATOR". Porsche 911 1972-89 / 964 Carrera 1989-94 / 930 Turbo
Special Order item
93010776403
Product Information
Product Information
Original and Made in Germany oil filter. With its red housing and the inscription "PUROLATOR", it is the same as the original oil filter used in the vehicle at the time and is available exclusively from Porsche Classic.

porsche

Fits:
Porsche 911 T / E 1972-1973
Porsche 911 S 1972-73
Porsche 911 1974-1989
Porsche 964 Carrera (with engine code M64.01-03) 1989-1994

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

93010776403
91610775400
93010776400
93010776401
93010776403

The product you are viewing cross references to these numbers
Oil Filter Screw Socket. Porsche 356 / 912 - PCG10500102, 90010500102
4
Oil Filter Screw Socket. Porsche 356 / 912
Special Order item
PCG10500102
Product Information
Product Information
Oil Filter Screw Socket.

porsche

Fits:
Porsche 356 1950-65
Porsche 912

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

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

PCG10500102
PCG10500102
90010500102

The product you are viewing cross references to these numbers
Oil Filter With Housing. Porsche 356 / 912 - 54607800
3
Oil Filter With Housing. Porsche 356 / 912
Special Order item
54607800
Product Information
Product Information
Oil Filter With Housing.

porsche

Fits:
Porsche 356 1950-65
Porsche 912

Click 'Zoom in' for large parts diagram.
Diagram ref no 31

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

54607800
54607800

The product you are viewing cross references to these numbers
Oil filter. Porsche 356 / 912 - 54607827, PCG546078A
2
Oil filter. Porsche 356 / 912
Special Order item
PCG546078A
Product Information
Product Information
Oil filter.

Fits:
Porsche 356 1950-65
Porsche 912

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

PCG546078A
54607827
PCG546078A

The product you are viewing cross references to these numbers
Oil filter. Porsche 356 / 912 - 54607827, 846 078 27, PF915N, PCG546078A
1
Oil filter. Porsche 356 / 912
PCG546078A/1
Product Information
Product Information
Oil filter.

Fits:
Porsche 356 1950-65
Porsche 912

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

PCG546078A
54607827
846 078 27
PF915N
PCG546078A

The product you are viewing cross references to these numbers
Oil filter. Porsche 356 / 912 - 54607827, 546 07827, PCG546078A - YO-PF925TE
2
Oil filter. Porsche 356 / 912
PCG546078A/2
Product Information
Product Information
Oil filter.

Fits:
Porsche 356 - 1950 to 1965
Porsche 912 

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

PCG546078A
54607827
546 07827
PCG546078A

The product you are viewing cross references to these numbers
Oil filter. Porsche 911 1965-71 / 914-6 - 90110720309, 90110720310, 90110720302 - OC59
3
Oil filter. Porsche 911 1965-71 / 914-6
90110720310/1
Product Information
Product Information
Oil filter.

Fits:
Porsche 911 1965 - 1971
Porsche 914-6 1970 - 1971

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

90110720310
90110720309
90110720310
90110720302

The product you are viewing cross references to these numbers
Oil filter. Porsche 911 1965-71 / 914-6 red PUROLATOR. - 90110720309, 901 107 203 09, 901.107.203.09, 90110720310
2
Oil filter. Porsche 911 1965-71 / 914-6 red PUROLATOR.
Special Order item
90110720310
Product Information
Product Information
Original and Made in Germany oil filter. With its red housing and the inscription "PUROLATOR" PC34 it is the same as the original oil filter used in the vehicle at the time and is available exclusively from Porsche Classic.

Fits:
Porsche 911 1965 - 1971
Porsche 914-6 1970 - 1971

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

90110720310
90110720309
901 107 203 09
901.107.203.09
90110720310

The product you are viewing cross references to these numbers
Oil filter. Porsche 911 1972-89 / 964 Carrera 1989-94 / 930 Turbo - 91610775400, 93010776400, 93010776401, 93010776403, W940/29 - OC54
4
Oil filter. Porsche 911 1972-89 / 964 Carrera 1989-94 / 930 Turbo
93010776403/2
Product Information
Product Information
Oil filter.

Fits:
Porsche 911 T / E 1972-1973
Porsche 911 S 1972-73
Porsche 911 1974-1989
Porsche 964 Carrera (with engine code M64.01-03) 1989-1994

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

93010776403
91610775400
93010776400
93010776401
93010776403
W940

The product you are viewing cross references to these numbers
Oil pressure spring. Porsche 911 72-73 Oil Klappe - 90028000100
3
Oil pressure spring. Porsche 911 72-73 Oil Klappe
Special Order item
90028000100
Product Information
Product Information
Oil pressure spring, Oil Klappe.
2 x 12,5 x 71

porsche

Fits:
Porsche 911 T-E/E/S / 911 T-V 1972-73
TYP 911/51/52/57

Porsche  911 T-E/E/S / 911 T-V 1972-73 
TYP 911/53/63

Click 'Zoom in' for large parts diagram.
Diagram ref no 10

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

90028000100
90028000100

The product you are viewing cross references to these numbers
Oil tank drain plug washer. Porsche 911 1965-73 - 90012301130 - 90012301130
1
Oil tank drain plug washer. Porsche 911 1965-73
Special Order item
90012301130::1
Product Information
Product Information
Oil tank drain plug washer. 

porsche

Fits:
Porsche 911 1965-73

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

90012301130
90012301130

The product you are viewing cross references to these numbers
Oil Tank Drain Plug. Porsche 911 1965-89 - 91110717603, 91110717602, 90110717600, 90110717601
4
Oil Tank Drain Plug. Porsche 911 1965-89
Special Order item
91110717603::1
Product Information
Product Information
Oil Tank Drain Plug. Porsche 911 1965-89

porsche

Fits:
Porsche 911 1965-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 11.

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

91110717603
91110717603
91110717602
90110717600
90110717601

The product you are viewing cross references to these numbers
Oil tank drain plug. Porsche 911 1965-89 - 91110717603, 91110717602, 90110717600, 90110717601 - M22 X 1.5 X 13.5
2
Oil tank drain plug. Porsche 911 1965-89
91110717603/1::1
Product Information
Product Information
Oil tank drain plug. Galvanized. M22 x 1.5 x 13.5

oematch

Fits:
Porsche 911 1965-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 11.

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

91110717603
91110717603
91110717602
90110717600
90110717601

The product you are viewing cross references to these numbers
Oil tank to oil filter seal. Porsche 911 65-71 / 914 - 90110729100
2
Oil tank to oil filter seal. Porsche 911 65-71 / 914
Special Order item
90110729100
Product Information
Product Information
Oil tank to oil filter seal.

porsche

Fits:
Porsche 911 1965-71
Porsche 914 1970-76

Click 'Zoom in' for large parts diagram.
Diagram ref no 46

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

90110729100
90110729100

The product you are viewing cross references to these numbers
DISPLAYING 17 to 32 (of 36 products)
1 2 3
Also found on these pages
About Oil Filters

Porsche Oil Filters | Design911 High-Performance Filters for Engine Protection & Longevity

Oil filters are essential to maintaining your Porsche’s engine health and performance. They remove microscopic particles, sludge, and contaminants from the engine oil, ensuring smooth lubrication and reducing wear on critical moving components. A clean, high-quality oil filter preserves engine efficiency, prevents premature wear, and extends service life — a must-have for any performance-focused or classic Porsche.

At Design911, we offer a comprehensive range of oil filters and filter housings designed for precise fitment, superior filtration, and long-lasting protection. Each unit is built from premium materials to maintain optimal oil flow and capture harmful particles effectively. Whether for routine maintenance, restoration, or motorsport preparation, our oil filters deliver proven reliability and peace of mind for every drive.

What Do Oil Filters Do?

Oil filters are a vital part of your Porsche’s lubrication system, ensuring that only clean, filtered oil circulates through the engine.

Core Functions:
• Trap and remove metal shavings, dirt, and combustion residues.
• Maintain oil cleanliness and viscosity for consistent lubrication.
• Prevent sludge buildup and abrasive wear on engine parts.
• Protect vital components like bearings, pistons, and camshafts.
• Support optimal oil pressure and performance.

High-quality oil filtration helps sustain your Porsche’s signature responsiveness and reliability across all driving conditions.

Why Do Oil Filters Fail or Degrade?

Over time and mileage, oil filters accumulate debris and lose efficiency, restricting oil flow and reducing engine protection.

Common Causes of Failure Include:
• Extended service intervals leading to clogged or saturated filters.
• Poor-quality or degraded filter media collapsing under pressure.
• Contamination from sludge or degraded oil.
• Seal deterioration causing leaks or pressure loss.
• Improper fitment or installation.

A worn or clogged oil filter can cause oil starvation, increased friction, and even serious engine damage — making timely replacement crucial for performance and longevity.

Why Replace or Upgrade Your Porsche Oil Filter?

Regular oil filter replacement ensures maximum engine protection and optimal performance. Upgrading to a performance-grade filter can also improve oil flow and filtration efficiency under high-load or track conditions.

Key Benefits:
• Restores oil cleanliness and pressure stability.
• Prevents wear and internal engine contamination.
• Extends oil life and enhances performance reliability.
• Available in paper, synthetic, and high-flow performance designs.
• Compatible with Porsche 911, 944, 968, Boxster, Cayman, Panamera, and Macan models.
• Ideal for servicing, tuning, or complete restoration projects.

Design911’s Porsche oil filters provide the engineering precision, protection, and durability required to keep your engine performing at its best — mile after mile.

Highlights

• Premium Porsche oil filters for all engine types.
• High-efficiency filtration for cleaner, longer-lasting oil.
• Precision fitment for both air- and water-cooled Porsche models.
• Engineered for performance, reliability, and protection.
• Perfect for servicing, maintenance, or performance upgrades.
• Available in standard and high-flow configurations.

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