Mahle SS45623 Engine Valve Stem Oil Seal Set - Intake

Mahle SS45623 Valve Stem Oil Seal Set

Mahle SS45623 is an engine valve stem oil seal set for intake applications on a wide range of Chrysler, Dodge, and Plymouth vehicles. Built with fluoroelastomer seal material and OE-focused dimensions, it supports consistent valve stem sealing in classic V8 applications.

Key Features

• Engine valve stem oil seal set for intake use
• Contains 8 oil seals, priced as a set
• Fluoroelastomer valve stem seal material for heat and oil resistance
• Inside diameter: 0.372 in; outside diameter: 0.625 in
• Upper inside diameter-valve side: 9.4 mm
• Low-profile seal dimensions: 0.022 in thickness and 0.022 in height
• Mahle sealing products are trusted by OEMs and technicians worldwide

Detailed Description

The Mahle SS45623 valve stem oil seal set is built for intake valve sealing on many Chrysler, Dodge, and Plymouth engines from 1966 through 1989. It is a positive-type seal set with fluoroelastomer construction, selected for dependable sealing performance in demanding engine environments. This part number, SS45623, is commonly searched for classic Mopar engine rebuilds where correct valve stem seal dimensions matter.

Compatible With Chrysler 300, Imperial, Newport, New Yorker, Town & Country, LeBaron, Fifth Avenue, Dodge Charger, Challenger, Monaco, Magnum, Aspen, Ramcharger, and Plymouth PB-series applications listed in the fitment data. This part cross-references Chrysler 4071 003 and FEL-PRO SS 70014 for the same application.

What It Helps Address

• Oil leakage past the valve stem area
• Excessive oil consumption from worn intake seals
• Blue exhaust smoke caused by valve stem seal wear
• Loss of sealing performance during engine rebuilds
• Replacement needs on older Chrysler, Dodge, and Plymouth intake valve setups

Installation Notes and Tips

• Verify valve stem diameter and seal dimensions before installation.
• Install on intake positions only, as listed in the fitment data.
• Inspect valve guides and stems for wear before fitting new seals.
• Use clean assembly practices to avoid damaging the fluoroelastomer sealing lip.
• Confirm the engine application against the vehicle-specific fitment list for your year, make, and model.

Quality Assurance

Mahle is known for sealing products used by OEMs and professional technicians around the world. SS45623 follows the brand’s OE-focused approach to engine sealing and dimensional accuracy for classic intake valve stem applications.