Description

21443-4X000 OIL SEAL: J-Series Diesel Guide

Rear Crankshaft Main Seal | Carnival, Bongo & Terracan

The 21443-4X000 OIL SEAL is the essential engine component designed to restore the lubrication integrity of your Hyundai or Kia diesel series engine. This professionally engineered unit ensures maximum oil containment, providing a dry transmission housing and superior structural integrity.

21443-4X000 OIL SEAL Fitment

  • Kia Carnival / Sedona: 2.9L CRDi J3
  • Kia Bongo III: 2.9L Diesel Models
  • Hyundai Terracan: 2.9L J-Series
  • Engine Type: 4-Cylinder Turbo Diesel
  • OE Part Number: 21443-4X000

Technical Material Specs

  • Position: Rear Main (Crankshaft)
  • Material: High-Grade FKM / Viton
  • Frame: Steel-Reinforced Casing
  • Performance: High-Pressure Resistant
  • 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 21443-4X000 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 Clutch Kits to ensure a complete and professional drivetrain restoration.

Check Fitment Verification

To ensure this oil seal is the perfect fit for your specific J-Series engine variant and transmission type, 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 21443-4X000 OIL SEAL?

It serves as a dynamic barrier at the back of the engine block, preventing pressurized engine oil from leaking past the rotating crankshaft into the transmission bell housing.

Which engines are compatible with this specific oil seal?
It is designed for the 2.9L J-Series (J3) diesel engine, a common powerplant for Kia’s MPVs and light commercial trucks.
What are the signs of a failing 21443-4X000 OIL SEAL?
Common symptoms include oil pooling at the bottom of the transmission housing, a slipping clutch (in manual models), and a rapid drop in engine oil levels.
Is this component a direct replacement for the original part?
Absolutely. This part is manufactured to meet exact OE dimensional tolerances and material hardness for a professional-grade press-fit installation.
Why is it important to replace this during a clutch or gearbox service?

Due to its location behind the flywheel, replacing the 21443-4X000 OIL SEAL while the transmission is already removed is a professional best practice to prevent future labor-intensive repairs.


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