FAG SS3393 Engine Crankshaft Seal - Rear

FAG SS3393 Rear Engine Crankshaft Seal

The FAG SS3393 is a rear engine crankshaft seal built for a wide range of Chevrolet, GMC, Buick, Cadillac, Oldsmobile, and Pontiac applications from 1986-2005. It uses a Viton sealing material with a metal and spring design to help maintain a tight seal at the rear of the crankshaft.

• Rear engine crankshaft seal for confirmed vehicle applications
• Viton sealing material for heat and fluid resistance
• Metal and spring seal construction
• OE-style dimensions: 115.011 mm bore diameter, 115.189 mm outside diameter, 11.989 mm width
• Cross-references Monroe Shocks & Struts 37026 and National 4359V for the same application

Application Details

Built for rear crankshaft sealing service, the FAG SS3393 is specified for vehicles such as the Chevrolet Silverado 2500, Chevrolet Camaro, Chevrolet Corvette, GMC Yukon, Pontiac Firebird, and related GM trucks, vans, and performance models. The part number SS3393 is also listed under global number 4133393100, and the Viton sealing material is selected for demanding engine environments where stable sealing performance matters.

Use this seal when servicing rear main seal leakage on confirmed applications including 2001-2005 Chevrolet Silverado 2500, 1998-2002 Chevrolet Camaro, 1986-2002 Pontiac Firebird, and 1992-1996 GMC Yukon. The FAG SS3393 is dimensioned for the listed bore, outside diameter, and width requirements to match the application-specific crankshaft seal location.

Common Problems This Part Addresses

• Rear main engine oil leakage at the crankshaft seal area
• Oil residue forming on the bellhousing or transmission interface
• Seal wear from age, heat, and contamination
• Loss of sealing tension at the rear crankshaft opening
• Service issues on GM trucks, SUVs, vans, and performance cars with the listed fitment

Installation Notes

Verify the rear seal location, dimensions, and vehicle application before installation. Clean the sealing surface thoroughly, inspect the crankshaft and housing for wear or damage, and confirm the seal is seated squarely during assembly. For best results, match the part number SS3393 to the vehicle’s confirmed fitment and compare it with the existing seal profile before reassembly.

Quality Assurance

FAG designs sealing components to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. This seal is engineered for contamination control and grease retention at the bearing or seal interface, with construction intended for demanding application-specific service.