National 224205 Engine Camshaft Seal

Engine Camshaft Seal for Toyota, Lexus, and Volvo Applications

National 224205 is an engine camshaft seal built for precise sealing performance in a wide range of Toyota, Lexus, Suzuki, Volvo, Isuzu, Chevrolet, and GMC applications. It uses a polyacrylate sealing material and a clockwise-spiral lip design to help maintain a consistent seal at the camshaft interface.

With metric dimensions and OE-style sizing, this National camshaft seal is a direct-fit service part for many vehicles, including Lexus IS300, Toyota Tacoma, and Toyota 4Runner applications. Part number 224205 is also cross-referenced to SKF 550237 for the same application.

Key Features

• Engine camshaft seal / oil seal for sealing the camshaft opening
• Polyacrylate sealing material for durable sealing performance
• Clockwise-spiral lip design for controlled sealing contact
• Metric dimensions: 42.000 mm shaft ID, 55.330 mm outside diameter, 8.000 mm width
• Housing bore: 55.000 mm
• National 224205 replacement part for service and repair work

Detailed Description

National 224205 is part of the 220000 series and is engineered as an engine camshaft seal for applications that require accurate shaft and housing dimensions. The seal measures 1.654 in. inside diameter, 2.178 in. outside diameter, and 0.315 in. thickness, with a 42.000 mm shaft size and 55.330 mm housing diameter. Its polyacrylate construction and spiral lip profile are suited to maintaining a stable seal in demanding engine environments.

This part is commonly used in fitments such as 2016-2020 Lexus IS300, 2006-2015 Lexus IS250 with Aisin TB-65SN Transmission, 1995-2015 Toyota Tacoma with Aisin 30-40LE Transmission, and 1985-2004 Toyota 4Runner with Aisin 30-40LE Transmission. It also appears in additional Lexus GS, LS, SC, Toyota Tundra, Toyota Sequoia, Volvo 740/760/940/960, Isuzu Pickup, and Chevrolet/GMC truck applications. National 224205 is a practical choice when servicing a leaking camshaft seal on Toyota Tacoma, Toyota 4Runner, or Lexus IS300 platforms.

What It Helps Address

• Oil seepage at the camshaft seal area
• Loss of sealing integrity around the camshaft opening
• Fluid contamination from a worn engine seal
• Maintenance replacement during engine service or timing-related repairs
• Fitment-specific sealing needs on Toyota, Lexus, Volvo, Isuzu, Chevrolet, and GMC vehicles

Installation Notes and Tips

Verify shaft diameter, housing bore, and transmission or engine application before installation. Clean the sealing surface thoroughly and inspect the camshaft and housing for wear, scoring, or debris that could affect seal life. Confirm the seal orientation matches the clockwise-spiral lip design during installation.

For fitment-specific service, check the vehicle notes carefully: this part is listed for many applications with Aisin transmissions, including Toyota Tacoma, Toyota 4Runner, Lexus GS300, Lexus LS430, and Lexus SC430 configurations. Always match the part number 224205 to the vehicle’s exact engine or transmission setup before assembly.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. Part number 224205 reflects that long-running focus on dimensional accuracy and sealing performance for engine repair applications.