FAG SS2126 Manual Transmission Shift Shaft Seal

Manual Transmission Shift Shaft Seal for Ford and Mercury

FAG SS2126 is a manual transmission shift shaft seal built with a metal seal type and polyacrylate sealing material. It is specified for select Ford Mustang, Mercury Capri, Mercury Zephyr, and Buick applications where a precise seal is needed to help keep transmission fluid contained and contaminants out.

Key Features

• Part number: SS2126
• Manual transmission shift shaft seal for transmission sealing applications
• Metal seal construction
• Polyacrylate sealing material
• Bore diameter: 1 in. (25.4 mm)
• Seal outside diameter: 1.004 in. (25.502 mm)
• Seal width: 0.625 in. (15.875 mm)
• Cross-reference part numbers include AMS Automotive 6152 and National 314267N

Detailed Description

FAG SS2126 is engineered for transmission sealing service where dimensional accuracy matters. With a 1-inch bore diameter, 1.004-inch outside diameter, and 0.625-inch width, this seal is sized for specific manual transmission shift shaft applications. The metal seal design and polyacrylate sealing material are selected to support consistent sealing performance in demanding drivetrain environments. This part number, SS2126, is listed for select 1983 Ford Mustang and Mercury Capri models, along with earlier Mustang, Capri, Zephyr, and Buick applications shown in the fitment data.

Compatible With: 1983 Ford Mustang, 1983 Mercury Capri, 1982 Ford Mustang, 1982 Mercury Capri, 1980-1981 Ford Mustang, 1980-1981 Mercury Capri, 1978 Mercury Zephyr, 1973 Ford Mustang, 1959-1961 Buick LeSabre, 1956-1958 Buick Century, and 1956-1958 Buick Roadmaster. This part cross-references AMS Automotive 6152 and National 314267N for the same application.

What This Seal Helps Address

• Transmission fluid seepage at the shift shaft
• Contamination entering the transmission through a worn seal area
• Loss of sealing integrity from age, heat, or wear
• Leak-related drivability concerns tied to low fluid level
• Service replacement for a damaged or hardened original seal

Installation Notes and Tips

Verify bore diameter, outside diameter, and seal width before installation to confirm the seal matches the transmission housing. Inspect the shaft surface for scoring or wear before fitting the new seal, and clean the sealing area thoroughly so the lip can seat correctly. For best results, compare the vehicle application against the listed fitment notes, especially on 1982 Mustang and Capri models with the specified cutoff date.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. The seal is intended to protect transmission components from dirt, dust, and moisture while helping retain lubricant over the service life of the bearing or sealed assembly.