Mahle SS45887 Engine Valve Stem Oil Seal Set - Intake and Exhaust

Mahle SS45887 Valve Stem Oil Seal Set

Mahle SS45887 is an engine valve stem oil seal set built for intake and exhaust valve service on select Ford, Lincoln, and Mercury applications. It uses fluoroelastomer seal material and OE-style dimensions to support consistent sealing at the valve stem.

For Ford Mustang, Lincoln Navigator, and related modular V8 engines, this valve stem seal set is specified for direct replacement service where precise stem sealing is required. The Mahle SS45887 part number is also referenced in OE and aftermarket catalogs for the same application.

Key Features

• Fluoroelastomer valve stem seal material for heat and oil resistance
• Positive-type seal design for intake and exhaust valve positions
• Inside diameter: 0.234 in. / 5.95 mm
• Outside diameter: 1.11 in.
• Height: 0.025 in. / 0.639 mm stem overall height
• OE-style sealing dimensions for service on compatible Ford, Lincoln, and Mercury engines

Detailed Description

Mahle SS45887 is an engine valve stem oil seal set engineered for intake and exhaust use on compatible Ford Mustang, Ford GT, Lincoln Aviator, Lincoln Navigator, Mercury Marauder, Lincoln Blackwood, Lincoln Continental, and Lincoln Mark VIII applications. The fluoroelastomer construction is selected for sealing performance in high-temperature engine environments, while the positive-type design helps maintain control of oil at the valve stem.

This part cross-references FEL-PRO SS 72888 and Ford F5LY 6571-A for the same application. If you are servicing a Ford Mustang valve stem seal issue or replacing seals on a Lincoln Navigator or Mercury Marauder, Mahle SS45887 provides the dimensional match needed for proper valve train sealing.

What It Helps Address

• Oil consumption caused by worn valve stem seals
• Blue exhaust smoke after startup or deceleration
• Oil fouling on spark plugs from valve guide leakage
• Loss of sealing at intake and exhaust valve stems
• Valve train service needs during cylinder head repair or rebuild work

Installation Notes and Tips

Verify valve stem diameter and seal dimensions before installation. Clean the valve guide area thoroughly and inspect the valve stems for wear, scoring, or carbon buildup that could affect seal life. Use proper valve spring and cylinder head service procedures for the engine being repaired, and confirm the seal seats fully before reassembly.

Compatible With 1995-2002 Lincoln Continental, intake and exhaust; 1995-1998 Lincoln Mark VIII, intake and exhaust; 1996-1999 Ford Mustang, intake and exhaust; 2001 Ford Mustang, intake and exhaust; 2002 Lincoln Blackwood, intake and exhaust; 2003-2004 Ford Mustang, intake and exhaust; 2003-2004 Lincoln Aviator, intake and exhaust; 2003-2004 Mercury Marauder, intake and exhaust; 2003-2005 Lincoln Aviator, intake and exhaust; 1999-2004 Lincoln Navigator, intake and exhaust; 2005-2006 Ford GT, intake and exhaust; 2007-2013 Ford Mustang, intake and exhaust.

Quality Assurance

Mahle gaskets and sealing components are used by OEMs and technicians worldwide, and SS45887 follows that OE-focused approach with application-specific dimensions and fluoroelastomer material selection for engine sealing service.