C178 NATIONAL Rear Engine Crankshaft Seal Gaskets Pi 944

Review NATIONAL 40-10 Rear Engine Crankshaft Seal For Porsche Gaskets Pi for PORSCHE 944 1983–1991

Introducing the National C178 40-10 rear engine crankshaft seal, specifically designed for Porsche 944 models manufactured between 1983 and 1991. This premium quality crankshaft seal is an essential component for maintaining the efficiency of your engine and preventing costly leaks.

The C178 40-10 crankshaft seal is meticulously crafted using advanced materials, ensuring optimal performance and longevity. Its primary function is to create a seal between the crankshaft and the engine casing, preventing oil from leaking out and keeping harmful contaminants from entering the engine.

This seal features a robust, yet flexible design that can withstand the high-pressure environments found in modern engines. Its unique shape conforms to the contours of the crankshaft and engine casing, providing a snug, leak-free fit. The seal's material is resistant to heat, oil, and other harsh engine conditions, ensuring consistent sealing performance even under the most demanding conditions.

Installation of the National C178 40-10 rear engine crankshaft seal is a straightforward process. It can be easily accessed by removing the engine sump and flywheel housing. The old seal is typically removed using a seal puller or a similar tool. Once the old seal is removed, the new seal can be installed using a light coating of engine oil and careful attention to ensure proper alignment and seating.

In conclusion, the National C178 40-10 rear engine crankshaft seal is an essential upgrade for any Porsche 944 from 1983 to 1991. Its advanced design, robust materials, and easy installation make it an indispensable addition to your engine maintenance routine. By preventing leaks and maintaining engine efficiency, this crankshaft seal not only saves you money on costly repairs but also ensures that your Porsche 944 continues to perform at its best.

Buying a National C178 40-10 rear engine crankshaft seal for a 1983-1991 Porsche 944 involves considering both the advantages and disadvantages.

1. OEM Quality: The National C178 40-10 rear engine crankshaft seal is an Original Equipment Manufacturer (OEM) part, which means it is made by the same company that originally manufactured the part for Porsche. This ensures a perfect fit and the best possible performance.

2. Reliability: OEM parts are known for their reliability and durability. They are specifically designed to work with the vehicle's engine and other components, reducing the risk of leaks and other issues.

3. Long-Term Savings: While the upfront cost of an OEM part may be higher than aftermarket alternatives, the long-term savings can be significant. OEM parts are less likely to require frequent replacements, reducing the overall cost of maintenance and repair.

1. Cost: The National C178 40-10 rear engine crankshaft seal can be more expensive than aftermarket alternatives. This may be a consideration for those working on a tight budget.

2. Availability: Depending on the supplier, OEM parts may not always be readily available. This can result in longer wait times for repairs or replacements.

3. Limited Options: OEM parts are specific to the vehicle and cannot be easily customized. This may limit options for those seeking specific features or modifications.

The decision to buy a National C178 40-10 rear engine crankshaft seal for a 1983-1991 Porsche 944 ultimately depends on individual priorities and circumstances. For those seeking the best possible fit, reliability, and long-term savings, an OEM part is the recommended choice. However, for those working on a tight budget or seeking specific customizations, aftermarket alternatives may be a more viable option. Regardless of the choice, it is important to ensure that the part is installed correctly to ensure optimal performance and longevity.

Details:

National rear engine crankshaft seal for 1983 - 1991 Porsche 944 gaskets pi: status: in stock.

specifications differentialsdepo:

• for models: 944
• for makes: Porsche
• for years: 1983–1991
• brand: National
• mpn: 1991
• placement on vehicle: Engine Gaskets Sealing Systems
• type: Engine Crankshaft Seal
• item length: 5.000
• manufacturer warranty: 1 Year
• ipn: C178 40-10
• compatible year: 1991 1990 1989 1988 1987 1986 1985 1984 1983
• core charge: Free No Core Charge
• position: Rear
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Engine Crankshaft Seal

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

payments differentialsdepo:

• wallet: google-pay
• other
• credit card: visa

seller differentialsdepo:

• # reviews: 638709
• rating: 99.6%
• city: indianapolis, indiana

shipping differentialsdepo:

• type: fixed
• service: standard, expedited
• class: standard, expedited
• transit: 3-6 days

offer differentialsdepo:

• options: ship-to-home
• started: march 29, 2026
• sold #: 11
• prices: $8.55–$28.02
• item condition:
  • New
  • Neu
• in stock #: 5
• availability: in stock

returns differentialsdepo:

• paid by: seller
• time: 30 days
• policy: returns accepted