Mahle B31733 Spark Plug Tube Seal Set

Mahle Spark Plug Tube Seal Set B31733

Mahle B31733 is an OEM-standard spark plug tube seal set made from molded rubber for reliable sealing at the valve cover. It is built for Hyundai and Kia applications that use four spark plug tube seals, including popular Elantra, Sonata, Tucson, Forte, and Soul models.

Key Features

• Molded rubber construction for consistent sealing performance
• OEM standard item grade for factory-style fit and function
• Package quantity of 4 spark plug tube seals
• Direct replacement for common Hyundai and Kia ignition service needs
• Mahle sealing product backed by OE-focused manufacturing standards

Product Details

This spark plug tube seal set is used in secondary ignition service where oil control around the spark plug wells is critical. Mahle B31733 is a molded rubber seal set that helps maintain a tight seal between the valve cover and spark plug tubes on select Hyundai Elantra, Sonata, Tucson, and Kia Forte, Soul, and Optima applications. This part cross-references FEL-PRO ES 72974 for the same application.

Compatible With 1999-2019 Hyundai Elantra, N/A; 2013-2019 Hyundai Elantra GT, N/A; 2018-2019 Hyundai Kona, N/A; 2016-2019 Hyundai Sonata, N/A; 2014-2019 Hyundai Tucson, N/A; 2005-2009 Hyundai Tucson, N/A; 2019 Hyundai Veloster, N/A; 2014-2017 Kia Forte, N/A; 2014-2017 Kia Forte5, N/A; 2017 Kia Optima, N/A; 2010-2017 Kia Soul, N/A; 2014-2016 Kia Forte Koup, N/A; 2013 Hyundai Elantra Coupe, N/A; 2009-2012 Hyundai Genesis, N/A; 2001-2011 Hyundai Accent, N/A; 1997 Hyundai Accent, N/A; 2011 Hyundai Equus, N/A; 2006-2011 Kia Rio, N/A; 2006-2011 Kia Rio5, N/A; 2005-2010 Kia Sportage, N/A; 2009 Kia Borrego, N/A; 2004-2009 Kia Spectra, N/A; 2005-2009 Kia Spectra5, N/A; 2003-2008 Hyundai Tiburon, N/A; 1997-2001 Hyundai Tiburon, N/A; 1996 Hyundai Accent, N/A.

What It Helps Fix

• Oil seepage into spark plug wells
• Worn or hardened tube seals from heat cycling
• Misfire concerns caused by contaminated plug wells
• Valve cover sealing issues during ignition service
• Maintenance needs on aging Hyundai and Kia engines

Installation Notes and Tips

Replace the seals during valve cover or spark plug service when the original rubber has become brittle, flattened, or oil-soaked. Clean the sealing surfaces before installation and verify the tube bores are free of debris. Confirm the application by year, make, and model before ordering; this set contains four spark plug tube seals.

Quality Assurance

Mahle supplies sealing products used by OEMs and technicians worldwide, and this B31733 set is built to OEM-standard expectations for fit and material selection. The molded rubber construction supports dependable sealing in the listed Hyundai and Kia applications.