Rear Crankshaft Oil Seal | Genuine Porsche Part

Radial shaft seal for the rear crankshaft, transmission side. High-quality original seal for Porsche 911 and 930 models. Dimensions: 90 × 110 × 12 mm.

Details at a glance

• Original Porsche radial shaft seal
• Position: Rear, transmission side
• Dimensions: Inner diameter 90 mm, outer diameter 110 mm, width 12 mm
• Ensures sealing between engine and transmission side
• Prevents oil loss at the rear crankshaft
• Diagram reference: No. 33

Description

This original shaft seal for the rear crankshaft is an essential component for reliably sealing the crankcase on the transmission side. It prevents engine oil from escaping and protects adjacent components from contamination and wear. Thanks to its precise manufacturing according to Porsche specifications, the seal guarantees optimal fit and long durability.

With the precisely specified dimensions of 90 × 110 × 12 mm, this radial shaft seal replaces aged or hardened original seals and fully restores the factory sealing effect – especially important during engine overhauls, transmission removal, or oil loss around the clutch bell.

Technical Data

• Manufacturer: Porsche (Original part)
• Type: Radial shaft seal
• Inner diameter: 90 mm
• Outer diameter: 110 mm
• Width: 12 mm
• Installation side: Transmission side (rear)
• Diagram reference: No. 33

Compatibility / Vehicle Assignment

• Porsche 911 3.0L (1978–1983)
• Porsche 911 3.2L (1984–1989)
• Porsche 930 Turbo (1975–1989)

Scope of delivery

• 1 × Shaft seal – rear crankshaft (Original Porsche)

Note

Replacement is recommended as part of an engine overhaul or when removing the transmission, to avoid consequential damage due to oil loss.