Please wait… 
Please wait while we process your order,
do not press the back button… 
Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png +443456003478 https://www.design911.co.uk Facebook Instagram
Porsche specialists based in the UK
Porsche > Panamera 971 MK1 (2017-2020) > 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18 > Engine Rebuild Parts >

Crankcase Parts

Crankcase Parts

Filter by brand
DISPLAYING 1 to 3 (of 3 products)
Balancer Shaft Chain Sprocket. Porsche 971 Panamera 4.0L V8 2017-21 - PAB105223, 9A710522301
3
Balancer Shaft Chain Sprocket. Porsche 971 Panamera 4.0L V8 2017-21
Special Order item
PAB105223
Product Information
Product Information
Balancer Shaft Chain Sprocket.

Fits:
Porsche 971 Panamera MKI 4.0L V8 2017>>2021

Cars With Engine Code:
DBUC

Diagram Ref No 35



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Related, superseded, cross reference or alternative numbers for comparison.

PAB105223
PAB105223
9A710522301

The product you are viewing cross references to these numbers
Rear Main Crankshaft Oil Seal. Porsche 958 Cayenne / 95B Macan / 970 / 971 Panamera 2009-20 - 95810115301, 95810115300
2
Rear Main Crankshaft Oil Seal. Porsche 958 Cayenne / 95B Macan / 970 / 971 Panamera 2009-20
Special Order item
95810115301
Product Information
Product Information
Rear Main Crankshaft Oil Seal. 
The Genuine Porsche Rear Main Crankshaft Oil Seal is an original equipment engine sealing component designed to provide a reliable oil-tight seal between the rear of the crankshaft and the engine block on compatible Porsche engines. Manufactured to Porsche's exact specifications for fit, sealing performance and durability, this rear main seal prevents engine oil from escaping at the crankshaft exit point while allowing smooth crankshaft rotation, ensuring optimum lubrication and long-term engine reliability.  

Fits:
  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
  • Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 39

Manufactured from premium heat-resistant elastomer with a precision-moulded sealing lip and reinforced outer casing, the seal is engineered to withstand high crankshaft speeds, continuous thermal cycling, elevated oil temperatures and prolonged exposure to engine oil. Designed as a direct replacement for the original component, it provides factory-correct fitment and dependable sealing performance, making it ideal during clutch replacement, engine rebuilds or preventative maintenance.  

What This Product Does:
  • Prevents engine oil from leaking from the rear of the crankshaft.
  • Maintains the integrity of the engine lubrication system.
  • Provides a durable seal while allowing smooth crankshaft rotation.
  • Helps protect the flywheel and transmission bell housing from oil contamination.
  • Prevents dirt and moisture from entering the engine.
  • Supports reliable engine lubrication and performance.
  • Restores factory sealing performance.
  • Forms an essential part of the engine sealing system.

Symptoms Of Wear Or Failure:
  • Engine oil leaking between the engine and transmission.
  • Oil spots beneath the rear of the engine.
  • Burning oil smell caused by oil contacting hot components.
  • Oil contamination inside the bell housing.
  • Clutch slipping due to oil contamination (manual transmission models).
  • Gradual engine oil loss.Hardened, cracked or worn sealing lip.
  • Excessive oil residue around the rear of the engine.
  • Persistent oil leaks despite replacing nearby gaskets.
  • Reduced engine reliability due to oil loss.

Why Replacement Matters:

  • The rear main crankshaft oil seal operates in one of the most demanding areas of the engine, sealing against a continuously rotating crankshaft while being exposed to high temperatures, oil pressure and constant thermal cycling. Over time, the sealing lip can harden, wear or lose elasticity, allowing engine oil to escape.
  • A leaking rear main seal can contaminate the flywheel, clutch assembly or transmission bell housing, potentially leading to clutch slippage, increased repair costs and reduced engine lubrication. If left unresolved, continued oil loss can accelerate internal engine wear and compromise long-term reliability.
  • Replacing a worn rear main crankshaft oil seal with a Genuine Porsche component restores factory sealing performance and helps ensure dependable engine protection. Manufactured to Porsche's exact standards, the Genuine Rear Main Crankshaft Oil Seal provides precise fitment, superior sealing efficiency and long-lasting durability, maintaining the performance, reliability and quality expected from your Porsche.



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

95810115301
95810115301
95810115300

The product you are viewing cross references to these numbers
Rear Main Crankshaft Oil Seal. Porsche 958 Cayenne / 95B Macan / 970 / 971 Panamera 2009-20 - 95810115301, 95810115300 - A1119122
2
Rear Main Crankshaft Oil Seal. Porsche 958 Cayenne / 95B Macan / 970 / 971 Panamera 2009-20
95810115301/1
Product Information
Product Information
Rear Main Crankshaft Oil Seal. 
The OE MATCH Rear Main Crankshaft Oil Seal is a engine sealing component designed to provide a reliable oil-tight seal between the rear of the crankshaft and the engine block on compatible Porsche engines. This rear main seal prevents engine oil from escaping at the crankshaft exit point while allowing smooth crankshaft rotation, ensuring optimum lubrication and long-term engine reliability.  

Fits:
  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
  • Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 39

The seal is engineered to withstand high crankshaft speeds, continuous thermal cycling, elevated oil temperatures and prolonged exposure to engine oil. Designed as a replacement, it provides fitment and dependable sealing performance, making it ideal during clutch replacement, engine rebuilds or preventative maintenance.  

What This Product Does:
  • Prevents engine oil from leaking from the rear of the crankshaft.
  • Maintains the integrity of the engine lubrication system.
  • Provides a durable seal while allowing smooth crankshaft rotation.
  • Helps protect the flywheel and transmission bell housing from oil contamination.
  • Prevents dirt and moisture from entering the engine.
  • Supports reliable engine lubrication and performance.
  • Forms an essential part of the engine sealing system.

Symptoms Of Wear Or Failure:
  • Engine oil leaking between the engine and transmission.
  • Oil spots beneath the rear of the engine.
  • Burning oil smell caused by oil contacting hot components.
  • Oil contamination inside the bell housing.
  • Clutch slipping due to oil contamination (manual transmission models).
  • Gradual engine oil loss.Hardened, cracked or worn sealing lip.
  • Excessive oil residue around the rear of the engine.
  • Persistent oil leaks despite replacing nearby gaskets.
  • Reduced engine reliability due to oil loss.

Why Replacement Matters:

  • The rear main crankshaft oil seal operates in one of the most demanding areas of the engine, sealing against a continuously rotating crankshaft while being exposed to high temperatures, oil pressure and constant thermal cycling. Over time, the sealing lip can harden, wear or lose elasticity, allowing engine oil to escape.
  • A leaking rear main seal can contaminate the flywheel, clutch assembly or transmission bell housing, potentially leading to clutch slippage, increased repair costs and reduced engine lubrication. If left unresolved, continued oil loss can accelerate internal engine wear and compromise long-term reliability.



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

95810115301
95810115301
95810115300

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
About Crankcase Parts

Precision Crankcase Parts – Strength, Balance, and Reliability for Porsche Engines

The crankcase forms the core of every Porsche engine, housing key rotating components such as the crankshaft, bearings, and connecting rods. It provides structural rigidity, oil containment, and precise alignment for the engine’s moving parts — making it critical to both performance and longevity.

At Design911, we offer a wide range of precision-engineered crankcase components, including bearing shells, seals, breather valves, dowels, plugs, and fasteners, all manufactured to exacting tolerances. Each part is crafted from high-strength, heat-resistant materials to ensure lasting durability and performance under the most demanding driving conditions.

Whether you’re restoring an air-cooled 911 or maintaining a modern 992, our manufacturer-quality crankcase parts ensure perfect fitment, oil-tight sealing, and reliable performance for years to come.

What Do Crankcase Parts Do?

Crankcase components perform vital structural and lubrication roles within the engine, protecting internal parts and maintaining pressure balance.

Core Functions:

  • House and support the crankshaft, connecting rods, and bearings.
  • Contain and distribute oil to lubricate moving components.
  • Maintain structural rigidity to prevent vibration and misalignment.
  • Control crankcase ventilation to reduce oil contamination and pressure build-up.

In performance and classic Porsche engines alike, the crankcase ensures stability, smooth rotation, and reliable oil management — key to consistent power and reduced wear.

Why Do Crankcase Parts Fail?

Over time, crankcase components can degrade due to heat cycles, vibration, oil contamination, and mechanical fatigue. When neglected, these failures can lead to oil leaks, pressure imbalance, and even catastrophic engine damage.

Common Causes of Failure Include:

  • Oil seal wear causing leaks and pressure loss.
  • Bearing fatigue from prolonged high load or low oil pressure.
  • Warped surfaces due to overheating or corrosion.
  • Clogged breather valves causing pressure build-up and oil blow-by.
  • Fastener fatigue leading to structural loosening or vibration.

Replacing worn crankcase parts during an engine rebuild or maintenance interval is essential to preserve oil control, alignment, and crankshaft integrity.

Why Replace with Precision-Engineered Crankcase Parts?

High-quality crankcase components ensure your Porsche engine retains its strength, sealing capability, and precise alignment — essential for performance, reliability, and longevity.

Key Benefits:

  • Restores internal alignment for smooth crankshaft rotation.
  • Prevents oil leaks and pressure loss, maintaining engine performance.
  • Improves lubrication control and bearing life.
  • Reduces vibration and noise caused by worn or loose components.
  • Crafted from corrosion- and heat-resistant materials for lasting strength.
  • Perfect fitment and tolerance for air-cooled and water-cooled Porsche engines.

Engineers and restorers trust precision crankcase parts to maintain Porsche’s legendary reliability and mechanical balance — whether on the road or the track.

Highlights:

  • Comprehensive range of crankcase seals, bearings, bolts, and breather components.
  • Precision-machined parts designed for high-load, high-temperature performance.
  • Manufacturer-quality materials and tolerances.
  • Perfect for classic engine restorations and high-performance rebuilds.
  • Improves oil management, structural rigidity, and reliability.
  • Compatible with air-cooled and modern Porsche engine architectures.

You may also like
Popular Models