Timken 320259 Engine Crankshaft Seal - Front

Timken 320259 Engine Crankshaft Seal

The Timken 320259 engine crankshaft seal is built for front crankshaft sealing on a wide range of GM vehicles, including Chevrolet Cavalier, Pontiac Sunfire, and Oldsmobile Alero applications. It uses a precision sealing design to keep engine oil in place while helping block dirt and other contaminants from entering the engine.

Key Features

• V-fluoro-elastomer material for durable sealing performance
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter seals minor spindle imperfections and supports positive seating
• Internal contamination exclusion system helps reduce debris intrusion
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up
• Clockwise helix type
• Dimensions: 2.884 in. outside diameter, 1.998 in. shaft diameter, 2.878 in. housing bore, 0.374 in. width

Detailed Description

Timken 320259 is an engine crankshaft seal designed for front-position applications where reliable oil control is critical. The seal’s V-fluoro-elastomer construction and reinforced outer case support consistent sealing under engine heat and normal crankshaft movement. Its ribbed inner diameter helps the seal conform to minor surface imperfections, while the contamination exclusion design helps keep abrasive debris away from the sealing lip. This part cross-references National 320259 for the same application.

Compatible With front crankshaft seal applications on 1995-2002 Chevrolet Cavalier, 1995-2002 Pontiac Sunfire, 1999-2001 Oldsmobile Alero, and other listed GM front-engine applications. Timken 320259 is also a direct search match for buyers looking for a front crankshaft seal for Chevrolet Cavalier, Pontiac Sunfire, or Oldsmobile Alero repair work.

What It Helps Solve

• Engine oil leakage at the front crankshaft seal
• Contamination entering the crankshaft sealing area
• Seal wear caused by heat build-up
• Improper sealing on shafts with minor surface imperfections
• Installation damage to the seal case

Installation Notes and Tips

Verify shaft diameter, housing bore, seal width, and helix direction before installation. Clean the sealing surface thoroughly and inspect the crankshaft for wear, scoring, or contamination that could affect sealing performance. Proper alignment during installation is important to avoid damaging the outer case or sealing lip. Confirm front-position fitment for the exact year, make, and model before ordering.

Quality Assurance

Timken manufactures this seal with precision sealing design and durable materials intended for consistent engine sealing performance. Part number 320259 is a cataloged replacement for the listed front crankshaft seal applications.