Mahle SS45920 Engine Valve Stem Oil Seal Set - Exhaust

Mahle Valve Stem Oil Seal Kit SS45920

Mahle SS45920 is an engine valve stem oil seal set built for exhaust-side service on a wide range of GM, Cadillac, Pontiac, Saab, Isuzu, and Hummer applications. It uses a positive stop seal design with fluoroelastomer material for dependable sealing performance in high-temperature valve train environments.

Mahle valve stem oil seal kits are trusted by OEMs and technicians worldwide for consistent sealing quality. This kit is a direct-fit solution for vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Corvette when valve stem seal replacement is required.

Key Features

• Positive stop seal design for controlled valve stem sealing
• Fluoroelastomer valve stem seal material for heat resistance
• Engine valve stem oil seal set for exhaust-side applications
• Mahle SS45920 replacement part for OE-style service
• Cross-reference: FEL-PRO SS 71039

Product Details

The SS45920 valve stem oil seal kit is part of Mahle’s Valve Stem Oil Seal Kit line, a product family focused on precise engine sealing for repair and rebuild work. Mahle gaskets and sealing components are used across OEM and technician service channels, and this kit follows that same approach with a positive stop design and fluoroelastomer construction for stable sealing at the valve guide.

Compatible With 2001-2020 Chevrolet Express 1500, 2500, 3500, exhaust; 2001-2020 GMC Savana 1500, 2500, 3500, exhaust; 2001-2019 Chevrolet Silverado 1500, 2500 HD, 3500 HD, exhaust; and additional fitments including Chevrolet Camaro, Corvette, Tahoe, Suburban, GMC Sierra, Cadillac Escalade, Pontiac GTO, Saab 9-7x, and Isuzu Ascender. The Mahle SS45920 is also listed for 2020 Chevrolet Express 2500 and 3500, plus 2020 GMC Savana 2500 and 3500 exhaust applications.

What It Helps Fix

• Oil leakage past worn valve stem seals
• Blue exhaust smoke caused by oil entering the combustion chamber
• Oil consumption related to hardened or damaged seals
• Valve train sealing loss during cylinder head service
• Restoration of exhaust-side sealing on listed GM-based engines

Installation Notes and Tips

Verify engine code, cylinder head design, and valve guide dimensions before installation. Some listed applications include notes for metal with molded rubber construction and a 22.8 mm valve guide O.D. on 2001 model-year vehicles, so matching the exact engine configuration is important. Clean the valve guide area thoroughly and inspect the valve stems for wear before fitting the new seals.

Quality Assurance

Mahle sealing products are supplied to OEM and professional repair markets and are known for consistent material selection and fitment control. SS45920 is built as an OE-style replacement valve stem oil seal kit for engine sealing service.