Description

21443-2E110 OIL SEAL: Nu Engine Guide

Rear Crankshaft Main Seal | Tucson, Elantra, Sportage & Forte

The 21443-2E110 OIL SEAL is the essential engine component designed to restore the lubrication integrity of your Hyundai or Kia Nu series engine. This professionally engineered unit ensures maximum oil containment, providing a dry transmission housing and superior structural integrity.

21443-2E110 OIL SEAL Fitment

  • Hyundai Tucson: 2.0L Nu MPI
  • Hyundai Elantra: 1.8L / 2.0L Nu
  • Kia Sportage: 2.0L Nu GDI
  • Kia Forte / Cerato: 1.8L / 2.0L
  • OE Part Number: 21443-2E110

Technical Material Specs

  • Position: Rear Main (Crankshaft)
  • Material: Specialized FKM / Viton
  • Durability: High-Heat & Friction Resistant
  • Type: Radial Shaft Seal
  • Standard: OE Precision Grade

Drivetrain & Component Protection

Choosing this specific component is vital for protecting your vehicle’s transmission and drive systems. Selecting a premium 21443-2E110 OIL SEAL ensures that your crankcase remains pressurized and clean, preventing secondary damage to the flywheel and clutch. We strongly recommend browsing our Crankshaft Components and Full Synthetic Oils to ensure a complete and professional engine restoration.

Check Fitment Verification

To ensure this oil seal is the perfect fit for your specific Nu engine variant and production year, 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 21443-2E110 OIL SEAL?
It provides a high-performance dynamic seal at the rear of the crankshaft, containing pressurized engine oil within the block while the shaft rotates toward the transmission.
Which engines utilize the 21443-2E110 OIL SEAL?
It is specifically designed for the Nu engine series (G4NH, G4NA, G4NB) found in many late-model Hyundai and Kia sedans and SUVs.
What are the signs of a leaking rear main seal?
Common symptoms include oil dripping from the joint where the engine meets the transmission, oily residue on the starter motor or transmission housing, and a gradual loss of engine oil.
Is this component a direct replacement for the original part?
Absolutely. This part is manufactured to meet exact OE specifications for thermal resistance and fitment, ensuring a professional, leak-proof press-fit installation.
Why should I replace this seal during a transmission repair?
Since the 21443-2E110 OIL SEAL is located behind the flywheel, it is a professional best practice to replace it whenever the transmission is removed, as the labor to access it is significant.

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