National 222743 Engine Camshaft Seal

National 222743 Engine Camshaft Seal

National 222743 is a metric engine camshaft seal built for precise sealing at the camshaft and housing bore. It uses silicone construction and a counter-clockwise spiral lip design to help maintain a consistent oil seal in applications such as Honda Civic, Accord, Prelude, Acura Integra, and Honda CR-V.

Key Features

• Silicone sealing material for durable oil control
• Counter-clockwise spiral lip design
• Metric dimensions for proper OE-style fitment
• Inside diameter: 1.063 in. / 27.000 mm
• Outside diameter: 1.701 in. / 43.200 mm
• Width: 0.354 in. / 9.000 mm
• Housing bore: 1.693 in. / 43.000 mm
• Part description: oil seal

Detailed Description

National 222743 is part of the 220000 series and is engineered as a camshaft oil seal for metric applications that require accurate shaft and bore dimensions. The seal measures 27.000 mm on the inside diameter, 43.200 mm on the outside diameter, and 9.000 mm in width, with a silicone sealing element and a counter-clockwise spiral lip profile to support controlled oil retention at the camshaft interface. This part number, 222743, is listed for a wide range of Honda and Acura applications, including 1973-1983 Honda Civic, 1976-1983 Honda Accord, 1979-1982 Honda Prelude, 1988-1991 Honda Prelude, 1986-2001 Acura Integra, and 1997-2001 Honda CR-V.

National has focused on sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. This part cross-references CSF 10634 and Elring 591.777 for the same application.

What It Helps Address

• Oil seepage at the camshaft seal area
• Loss of sealing integrity around the camshaft housing bore
• Contamination from engine oil escaping into surrounding components
• Wear-related sealing issues on older Honda and Acura engines
• Service replacement needs for Honda Civic, Accord, Prelude, Acura Integra, and Honda CR-V engines

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal orientation before installation. Match the counter-clockwise spiral lip design to the engine’s rotation and press the seal evenly into the bore to avoid distortion. Clean the sealing surface thoroughly and inspect the camshaft journal for wear or scoring before fitting National 222743.

Quality Assurance

National is a long-established sealing brand with a history of supplying premium sealing solutions for automotive service. Part number 222743 is built to metric specifications and backed by National’s sealing expertise for engine repair applications.