Mahle SS45994 Engine Valve Stem Oil Seal Set - Intake and Exhaust

Mahle Valve Stem Oil Seal Kit SS45994

Mahle SS45994 is an engine valve stem oil seal set for intake and exhaust valve service. Built with metal and molded rubber construction, it helps restore sealing at the valve stem area for a precise OE-style repair on a wide range of GM, Buick, Cadillac, Chevrolet, GMC, Saab, Saturn, Pontiac, and Suzuki applications.

Mahle’s Valve Stem Oil Seal Kit line focuses on dependable sealing performance for engine rebuild and cylinder head service. The SS45994 part number is used in applications where accurate valve stem sealing dimensions matter, including Buick Enclave, Chevrolet Traverse, and GMC Acadia repairs.

Key Features

• Metal with molded rubber valve stem seal material for durable sealing performance
• Inside diameter: 0.187 in
• Outside diameter: 0.278 in
• Thickness: 0.03 in
• Height: 0.031 in
• Upper inside diameter at valve side: 4.75 mm
• Valve stem seal stem overall height: 0.787 mm
• Engine valve stem oil seal set for intake and exhaust positions

Detailed Description

Mahle SS45994 is engineered as a valve stem oil seal kit for engines that require a metal-backed, molded rubber seal profile. The dimensional specifications help support a proper fit at the valve stem, while the sealing material is selected for consistent contact in intake and exhaust service. This part cross-references FEL-PRO SS 72923 for the same application.

Compatible With select Buick Enclave, Chevrolet Traverse, and GMC Acadia engine service applications, this seal set is also listed across additional GM-family platforms including Cadillac CTS, Chevrolet Equinox, GMC Terrain, and Pontiac G6. Use SS45994 when replacing worn valve stem seals during cylinder head work, oil consumption repair, or top-end engine service.

Common Repair Uses

• Oil burning caused by worn valve stem seals
• Blue smoke after startup or deceleration
• Excessive oil entering the combustion chamber
• Valve train service during cylinder head rebuilds
• Restoring sealing performance on intake and exhaust valves

Installation Notes and Tips

Verify valve stem diameter and seal dimensions before installation. Clean the valve guide and stem area thoroughly, and inspect the cylinder head for wear or damage that could affect sealing. Follow the engine service procedure for the specific Buick, Chevrolet, GMC, Cadillac, Saab, Saturn, Pontiac, or Suzuki application to ensure correct placement on intake and exhaust valves.

Fits 2020-2023 Buick Enclave, intake and exhaust; fits 2020-2023 Chevrolet Traverse, intake and exhaust; fits 2019-2020 Chevrolet Impala, intake and exhaust; fits 2008-2019 Buick Enclave, intake and exhaust; fits 2018-2019 Cadillac XTS, intake and exhaust; fits 2009-2019 Chevrolet Traverse, intake and exhaust; fits 2017-2018 Buick Envision, intake and exhaust; fits 2015-2018 Chevrolet Colorado, intake and exhaust; fits 2012-2018 Chevrolet Impala, intake and exhaust; fits 2007-2018 GMC Acadia, intake and exhaust; fits 2015-2018 GMC Canyon, intake and exhaust; fits 2013-2017 Cadillac ATS, intake and exhaust; fits 2004-2017 Cadillac CTS, intake and exhaust; fits 2013-2017 Cadillac XTS, intake and exhaust; fits 2012-2017 Chevrolet Caprice, intake and exhaust; fits 2008-2017 Chevrolet Equinox, intake and exhaust; fits 2017 GMC Acadia Limited, intake and exhaust; fits 2010-2017 GMC Terrain, intake and exhaust; fits 2010-2016 Buick LaCrosse, intake and exhaust; fits 2005-2008 Buick LaCrosse, intake and exhaust; fits 2004-2016 Cadillac SRX, intake and exhaust; fits 2014-2016 Chevrolet Impala Limited, intake and exhaust; fits 2016 Chevrolet Malibu Limited, intake and exhaust; fits 2010-2015 Chevrolet Camaro, intake and exhaust; fits 2012 Chevrolet Captiva Sport, intake and exhaust; fits 2008-2012 Chevrolet Malibu, intake and exhaust; fits 2005-2011 Cadillac STS, intake and exhaust; fits 2011 Saab 9-4X, intake and exhaust; fits 2010-2011 Saab 9-5, intake and exhaust; fits 2010 Buick Allure, intake and exhaust; fits 2007-2010 Saturn Outlook, intake and exhaust; fits 2008-2010 Saturn Vue, intake and exhaust; fits 2009-2010 Suzuki Grand Vitara, intake and exhaust; fits 2007-2009 Pontiac G6, intake and exhaust; fits 2008-2009 Pontiac G8, intake and exhaust; fits 2008-2009 Pontiac Torrent, intake and exhaust; fits 2006-2009 Saab 9-3, intake and exhaust; fits 2007-2009 Saturn Aura, intake and exhaust; fits 2007-2009 Suzuki XL-7, intake and exhaust; fits 2004-2006 Buick Rendezvous, intake and exhaust.

Quality Assurance

Mahle gaskets and sealing products are used by OEMs and technicians worldwide, and SS45994 follows that OE-focused approach with published dimensional data and application coverage for service verification. Confirm engine code and valve stem seal dimensions against the vehicle service information before installation.