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FAG SS3664 Differential Pinion Seal - RearOE Quality 60-Day Returns
Part #: SS3664

FAG SS3664 Differential Pinion Seal - Rear

Rear
2 vehicles fit this part
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Fitment: Chevrolet, Bel Air
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FAG SS3664 Differential Pinion Seal

The FAG SS3664 differential pinion seal is built for rear axle sealing performance where contamination control and lubricant retention matter. It is a metal and spring style seal with nitrile sealing material, sized for precise bore and outside diameter requirements on the specified application.

Key Features

  • Part number SS3664 for differential pinion seal applications
  • Metal and spring seal design for stable sealing support
  • Nitrile sealing material for durable contact and fluid resistance
  • Bore diameter: 1.686 in. / 42.824 mm
  • Seal outside diameter: 1.69 in. / 42.926 mm
  • Seal width: 1.063 in. / 6.35 mm
  • Compatible with 1950 Chevrolet Bel Air, rear

Detailed Description

FAG SS3664 is a differential pinion seal engineered to help maintain proper sealing at the axle pinion area. The metal and spring construction supports consistent sealing pressure, while the nitrile sealing element is selected for dependable contact in driveline service. With its specified bore diameter, outside diameter, and width, this seal is sized for the listed rear application on the 1950 Chevrolet Bel Air. The SS3664 part number is also referenced as a direct replacement for the same application, making it a practical choice when servicing a leaking or worn pinion seal on a 1950 Chevrolet Bel Air rear differential.

This part cross-references CSF (e.g., 10632) for the same application.

Common Issues Addressed

  • Rear differential pinion seal leakage
  • Gear oil loss at the pinion area
  • Contamination entering the axle seal area
  • Wear-related sealing failure during driveline service
  • Noise or driveline concerns associated with low lubricant level

Installation Notes and Tips

Verify the seal dimensions against the original part before installation. Inspect the pinion yoke, sealing surface, and surrounding components for wear or scoring, since surface damage can affect seal life. Clean the housing thoroughly and install the seal squarely to avoid distortion. Confirm the application by vehicle position and part number SS3664 before final assembly.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. The SS3664 follows those dimensional and material requirements for the listed rear fitment on the 1950 Chevrolet Bel Air.

BrandFAG
Part NumberSS3664
40531.063
405327
Seal TypeMetal; spring
Sealing MaterialNitrile
Bore Diameter1.686
Bore Diameter42.824
Seal Outside Diameter1.69
Seal Outside Diameter42.926
Seal Width1.063
Seal Width6.35

This part fits 2 vehicles. Search below:

YearMakeModelPositionNotes
1950ChevroletBel AirRearSchaeffler Seal Global Number 413 3664 100
1950ChevroletBel AirN/ASchaeffler Seal Global Number 413 3664 100

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

106324133664100470606

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.