Mahle SS45799 Engine Valve Stem Oil Seal Set - Exhaust

Mahle SS45799 Valve Stem Oil Seal Set

Mahle SS45799 is an engine valve stem oil seal set built for exhaust-side sealing on a wide range of Chrysler, Dodge, and Jeep applications. It uses fluoroelastomer seal material for dependable resistance to heat and oil exposure in the valve train.

For Jeep Wrangler, Jeep Cherokee, Dodge Dakota, and related V8 and inline engine applications, this valve stem seal set supports consistent sealing at the valve guide area and helps maintain proper oil control in the cylinder head.

Key Features

• Engine valve stem oil seal set for exhaust valve applications
• Fluoroelastomer seal material for high-temperature oil sealing performance
• Inside diameter: 0.275 in. / 7 mm upper inside diameter
• Outside diameter: 0.67 in.
• Height: 0.020 in. / 0.515 mm stem overall height
• Mahle sealing component engineered for OE-style service replacement
• Part number SS45799 for catalog and fitment lookup

Detailed Description

Mahle SS45799 is designed for exhaust valve stem sealing where oil control at the valve guide is critical. The fluoroelastomer construction is selected for durability in elevated engine temperatures and exposure to engine oil, helping maintain a stable seal in the cylinder head. This part number SS45799 cross-references Chrysler 5300 9887 for the same application.

Compatible With 1992-2006 Jeep Wrangler, Jeep TJ, Jeep Cherokee, and Jeep Grand Cherokee exhaust applications, as well as 1992-2003 Dodge Dakota and several Dodge Ram, Durango, and B-series applications. If you are servicing a Jeep Wrangler exhaust valve stem oil seal set or replacing seals during cylinder head work on a Dodge Dakota, Mahle SS45799 provides the dimensional match needed for the repair.

What It Helps Address

• Oil entering the combustion chamber through worn valve stem seals
• Blue exhaust smoke caused by valve guide oil leakage
• Oil consumption related to deteriorated exhaust-side seals
• Rough idle or fouled plugs linked to poor valve stem sealing
• Loss of sealing integrity during cylinder head service

Installation Notes and Tips

Verify valve stem diameter, seal height, and outside diameter before installation. Clean the valve guide and stem area thoroughly, and inspect the guide for wear before fitting new seals. Use proper valve spring service procedures and follow the engine manufacturer’s service specifications for your Jeep, Dodge, or Chrysler application. Confirm exhaust-side placement during assembly, since this part is listed for exhaust positions only.

Quality Assurance

Mahle gaskets and sealing products are trusted by OEMs and technicians worldwide for engine sealing service. SS45799 is built to meet the dimensional and material requirements expected in professional engine repair work.