National 710550 Engine Camshaft Seal - Intake (Front)

National 710550 Camshaft Seal Overview

National 710550 is an engine camshaft seal built for intake front applications that require a precise metric fit and dependable oil control. It uses a fluoro-elastomer sealing material and a clockwise-spiral lip design to help maintain a consistent seal at the shaft interface.

Fits 1995-2000 Ford Contour, Intake (Front); Fits 1998-2003 Ford Escort, Intake (Front); Fits 2001-2004 Ford Escape, Intake (Front); Fits 2000-2004 Ford Focus, Intake (Front); Fits 1999-2002 Mercury Cougar, Intake (Front); Fits 1995-2000 Mercury Mystique, Intake (Front); Fits 2001-2004 Mazda Tribute, Intake (Front).

Key Features

• Part number: 710550
• Engine camshaft seal / oil seal for intake front placement
• Fluoro-elastomer construction for sealing performance in engine environments
• Clockwise-spiral lip design for controlled sealing action
• Metric dimensions: 42.000 mm shaft diameter, 53.120 mm outside diameter, 7.000 mm width
• National series 710500
• Cross-reference part numbers include Timken SL260056 and Remy 16487

Detailed Description

National 710550 is a metric camshaft oil seal engineered around a 42.000 mm inside diameter, 53.120 mm outside diameter, and 7.000 mm width. The fluoro-elastomer material is selected for sealing applications in the engine, while the clockwise-spiral lip design supports oil retention at the camshaft interface. This part is listed for intake (front) positions on Ford, Mercury, and Mazda vehicles, including Ford Escape, Ford Focus, Ford Escort, Ford Contour, Mercury Cougar, Mercury Mystique, and Mazda Tribute applications.

National has supplied sealing solutions for more than 75 years, and this part reflects that focus on dimensional accuracy and application-specific sealing. National 710550 is a direct-fit style option for service work where the original camshaft seal needs replacement. This part cross-references Timken SL260056 and Remy 16487 for the same application.

What This Part Helps Address

• Oil seepage at the camshaft seal area
• Loss of sealing integrity at the intake front camshaft location
• Contamination around the timing-side engine area
• Seal wear from age, heat, and engine oil exposure
• Service replacement for vehicles listed in the fitment data

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. Clean the sealing surface and housing bore thoroughly, and inspect the camshaft journal for wear or scoring that could affect sealing. Confirm the intake front position on the engine before ordering or installing National 710550.

Quality Assurance

National is a long-established sealing brand with a reputation built on engine sealing products and ongoing design updates for modern vehicles. The 710550 camshaft seal is manufactured to metric dimensions and application-specific requirements for the listed Ford, Mercury, and Mazda fitments.