Description

21421-33144 OIL SEAL: Front Crankshaft Guide

Front Main Seal | Sonata, Santa Fe, Optima & Magentis

The 21421-33144 OIL SEAL is the essential engine component designed to restore the lubrication integrity of your Hyundai or Kia series engine. This professionally engineered unit ensures maximum oil containment, providing a dry timing environment and superior structural integrity.

21421-33144 OIL SEAL Fitment

  • Hyundai Sonata: 2.0L / 2.4L / 2.7L
  • Hyundai Santa Fe: 2.4L / 2.7L V6
  • Kia Optima: 2.4L / 2.5L / 2.7L
  • Kia Sportage: 2.0L / 2.7L Models
  • OE Part Number: 21421-33144

Technical Material Specs

  • Position: Front Main (Crankshaft)
  • Material: Polyacrylate / Viton Compound
  • Feature: Integrated Dust Lip
  • Resistance: High-Heat & Oil Stable
  • Standard: OE Precision Grade

Timing System Protection

Choosing this specific component is vital for protecting your vehicle’s timing belt or drive belts from oil degradation. Selecting a premium 21421-33144 OIL SEAL ensures that your engine’s front end remains dry and functional, preventing catastrophic belt failure. We strongly recommend browsing our Timing Belt Kits and Crankshaft Pulleys to ensure a complete and professional engine service.

Check Fitment Verification

To ensure this oil seal is the perfect fit for your specific engine code and production date, please contact us for professional verification using your chassis number.


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Note: Images shown are for illustration purposes only and may not be an exact representation of the product.

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Questions and Answers

What is the primary function of the 21421-33144 OIL SEAL?
It provides a dynamic seal at the front of the engine block, containing engine oil while allowing the crankshaft pulley (harmonic balancer) to rotate freely.
Which engines utilize the 21421-33144 OIL SEAL?
It is commonly found in the 2.0L Sirius engines and 2.5L/2.7L Delta V6 engines used in late 90s and early 2000s Hyundai and Kia vehicles.
What are the symptoms of a failing front crankshaft seal?
The most obvious signs are oil spray on the underside of the hood, oil accumulation on the front engine cover, or oil dripping from the front main pulley area.
Is this component a direct replacement for the original part?
Absolutely. This part is manufactured to meet exact OE specifications for inner diameter and lip tension, ensuring a professional, leak-proof fit on the crank snout.
Why should I replace this seal during a timing belt service?
Since the 21421-33144 OIL SEAL is easily accessible once the timing belt is removed, it is a professional best practice to replace it then to prevent oil from ruining a new belt later.

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