Mahle SS45903 Engine Valve Stem Oil Seal Set - Intake

Mahle SS45903 Valve Stem Oil Seal Set

Mahle SS45903 is an engine valve stem oil seal set built for intake valve sealing on select Dodge Ram heavy-duty applications. It uses a metal body with molded rubber to help maintain a consistent seal at the valve stem and support proper oil control in the cylinder head.

Compatible with 1998-2002 Dodge Ram 2500 and 1998-2002 Dodge Ram 3500 intake applications, this Mahle valve stem seal set is a direct-fit sealing solution for engines that require the specified dimensions and positive-type seal design.

Key Features

• Engine valve stem oil seal set for intake valve applications
• Metal with molded rubber construction
• Inside diameter: 0.244 in. / 6.2 mm upper inside diameter
• Outside diameter: 0.637 in.
• Stem overall height: 0.559 mm
• Designed for select Dodge Ram 2500 and Dodge Ram 3500 engines
• Mahle SS45903 cross-references FEL-PRO SS 70937 for the same application

Detailed Description

Mahle SS45903 is engineered as an intake valve stem oil seal set for engines that require a positive-type seal with metal and molded rubber construction. The seal dimensions are specified for accurate valve stem fitment, including a 0.244-inch inside diameter, 0.637-inch outside diameter, and 0.022-inch thickness. Mahle supplies sealing products used by OEMs and technicians worldwide, and this part follows that focus on dimensional consistency and dependable sealing performance.

This part number is listed for 1998-2002 Dodge Ram 2500 and 1998-2002 Dodge Ram 3500 intake applications, with fitment noted up to engine # 46239409. If you are sourcing a Mahle SS45903 replacement for a Dodge Ram 2500 or Dodge Ram 3500 intake valve seal service, verify engine identification and seal dimensions before installation.

What It Helps Address

• Oil entering the intake side through worn valve stem seals
• Blue exhaust smoke caused by valve stem seal leakage
• Oil consumption related to deteriorated intake seals
• Rough idle or fouling from oil contamination in the combustion chamber
• Loss of sealing integrity at the valve stem in high-mileage engines

Installation Notes and Tips

Confirm engine code, cylinder head design, and valve stem seal dimensions before installation. This Mahle SS45903 seal set is listed for intake use only on the specified Dodge Ram 2500 and Dodge Ram 3500 applications. Clean the valve guide area thoroughly, inspect the valve stems for wear, and make sure the seal seats fully and evenly during assembly.

Quality Assurance

Mahle is known for sealing products used in OEM and professional repair environments. SS45903 is built to match the listed dimensions and application requirements for the specified Dodge Ram intake service.