HomeTransmission > Gaskets and Sealing SystemsSKF 21103 Manual Transmission Seal - Front, Outer or Rear
Part #: 21103

SKF 21103 Manual Transmission Seal - Front, Outer or Rear

Rear, Outer, and Front
⚙️ 36 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Chrysler, Dodge, and GMC, Blazer, C10 Suburban, C20 Suburban, Dart, Imperial, Jimmy, K10 Suburban, K20 Suburban, Lancer, Newport, and Town & Country
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Reliable Manual Transmission Seal for Chevrolet and Dodge Vehicles

The SKF 21103 manual transmission seal is engineered to provide durable sealing performance for a range of Chevrolet, Chrysler, Dodge, and GMC models. Designed with precision dimensions and a silicone sealing surface, this seal helps maintain transmission integrity and prevent fluid leaks.

  • Width: 0.375 inches for a secure fit
  • Outside Diameter: 2.879 inches ensuring compatibility with specified shafts
  • Shaft Diameter: 2.125 inches tailored for manual transmission shafts
  • Sealing Surface Type: Silicone for enhanced resistance to heat and wear
  • Compatible with Chevrolet Blazer, C10 Suburban, C20 Suburban, and more

Detailed Description of the SKF 21103 Manual Transmission Seal

This manual transmission seal from SKF is designed to meet the exacting standards required for maintaining transmission fluid containment in manual gearboxes. The 0.375-inch width and 2.879-inch outside diameter provide a precise fit around shafts measuring 2.125 inches in diameter. The silicone sealing surface offers improved durability and resistance to temperature fluctuations, which is critical for vehicles such as the Chevrolet Blazer and Dodge Dart that operate under varying conditions. This seal is suitable for use in multiple models including the Chrysler Imperial, GMC Jimmy, and Plymouth Newport, ensuring reliable performance across a broad range of manual transmissions.

Common Applications and Issues Addressed

  • Prevents manual transmission fluid leaks in Chevrolet C10 and K10 Suburban models
  • Reduces contamination ingress in Dodge Lancer and Chrysler Town & Country transmissions
  • Maintains proper sealing pressure to avoid premature wear in GMC K20 Suburban
  • Helps eliminate noise and vibration caused by fluid loss in manual gearboxes
  • Supports consistent transmission performance in older model vehicles requiring precise sealing

Installation Notes and Tips

When installing the SKF 21103 manual transmission seal, ensure the shaft diameter matches the specified 2.125 inches for optimal sealing. Clean the sealing surface and surrounding area thoroughly before installation to prevent debris interference. Use appropriate tools to press the seal evenly into place without damaging the silicone sealing surface. Verify the seal is seated flush to avoid leaks and maintain transmission integrity.

Quality Assurance and Warranty Information

SKF manufactures the 21103 manual transmission seal to meet industry standards for durability and performance. The silicone sealing surface is designed to withstand heat and wear typical in manual transmissions. While specific warranty details are not provided, SKF products are generally backed by quality control processes to ensure reliability in automotive applications.

BrandSKF
Part Number21103
Width0.375
Outside Diameter2.879
Sealing Surface TypeSilcone
Shaft Diameter2.125

This part fits 36 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1972ChevroletBlazerRear
1972ChevroletC10 SuburbanRear
1972ChevroletC20 SuburbanRear
1972ChevroletK10 SuburbanRear
1972ChevroletK20 SuburbanRear
1972GMCJimmyRear
1971ChevroletBlazerRear
1971ChevroletC10 SuburbanRear
1971ChevroletC20 SuburbanRear
1971ChevroletK10 SuburbanRear
1971ChevroletK20 SuburbanRear
1971GMCJimmyRear
1970ChevroletBlazerRear
1970ChevroletC10 SuburbanRear
1970ChevroletC20 SuburbanRear
1970ChevroletK10 SuburbanRear
1970ChevroletK20 SuburbanRear
1970GMCJimmyRear
1969ChevroletBlazerRear
1969ChevroletC10 SuburbanRear
1969ChevroletC20 SuburbanRear
1969ChevroletK10 SuburbanRear
1969ChevroletK20 SuburbanRear
1968ChevroletC10 SuburbanRear
1968ChevroletC20 SuburbanRear
1968ChevroletK10 SuburbanRear
1968ChevroletK20 SuburbanRear
1961DodgeDartFront
1961DodgeLancerFront
1960ChryslerImperialFront
1960DodgeDartFront
1953ChryslerNewport4.3LL6Outer
1953ChryslerTown & Country4.3LL6Outer
1952ChryslerNewport4.3LL6Outer
1952ChryslerTown & Country4.1LL6Outer
1952ChryslerTown & Country4.3LL6Outer

* 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:

1408245145821103181252X12400084975921103A1805T410CHR 21103

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