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🔧 national 4278 differential pinion seal: ultimate durability for seamless performance logo

🔧 National 4278 Differential Pinion Seal: Ultimate Durability for Seamless Performance Review

3

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Excellent

Revainrating 5 out of 5  
Rating 
5.0
🚀 Engines & Engine Parts, 🏎️ Performance Car Parts & Accessories

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Description of 🔧 National 4278 Differential Pinion Seal: Ultimate Durability for Seamless Performance

Low swell in hydrocarbon fluids. Design type: spring loaded; multi-lip. Provides good low temperature capability. Temperature range: -40°F to 225°F; -40°C to 107°C. Delivers quality and reliable performance for every type of repair. Low swell in hydrocarbon fluids.

Reviews

Global ratings 3
  • 5
    3
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    0

Type of review

Revainrating 5 out of 5

Five stars for crankshaft

This is a high quality double lip seal. Not much to say. I don't know what the measurements in the list refer to, let alone a filling.

Pros
  • Gaskets
Cons
  • discontinued

Revainrating 5 out of 5

Seal of Quality: Bearings and Seals

I have used National oil seals for many years and they have always been of the highest quality. The seal is made in Mexico, but in my opinion it's much better than made in China. I would prefer one made in the USA but what can you do these days.

Pros
  • Replacement Parts
Cons
  • Interval

Revainrating 5 out of 5

Perfect seal! in crankshaft

The part was exactly what I needed and fitted perfectly with very easy assembly. It doesn't take much mechanical skill, but a little will definitely help. There are many videos on YouTube showing the removal and installation process, which should make it easy for those with basic hand tools.

Pros
  • crankshaft
Cons
  • Can't remember but there was something