TOYOTA 90311-32019 Engine Oil Seal

The Toyota 90311-32019 genuine (OEM) engine oil seal (SEAL, TYPE T OI) is a premium-quality sealing unit designed to provide reliable, leak-free sealing for rotating engine shafts (such as the camshaft or crankshaft). Genuine Toyota parts guarantee precise fitment, extended service life, and maximum reliability in accordance with factory specifications.

Technical Characteristics and Specifications:

• Inner Diameter: 32 mm
• Outer Diameter: 46 mm
• Width/Thickness: 6 mm
• Type: Type T OI (radial shaft seal with dust lip and garter spring tension)
• Material: High heat- and oil-resistant elastomer compound capable of withstanding engine oil and extreme operating conditions
• Installation Position: Engine block / cylinder head (shaft seal)

Function and Importance of the Oil Seal:

Retaining lubricant along rotating shafts is essential during engine operation. The primary function of the oil seal is to prevent engine oil from leaking out of the engine block while protecting internal engine components from external contaminants, dust, and moisture. The spring tension ensures that the sealing lip maintains continuous and uniform contact with the shaft surface, even at high rotational speeds.

Typical Symptoms of Wear or Failure:

• Oil Leaks: Appearance of oil traces beneath the timing cover or around the crankshaft pulley.
• Oil Consumption: A steady decrease in engine oil level due to external leakage.
• Contaminated Belts: Leaking oil can contaminate the timing belt or serpentine accessory belt, leading to material degradation, slippage, or breakage.

Replacing the oil seal is recommended during any major engine overhaul, timing belt service, or at the earliest sign of leakage to prevent severe engine damage.