Street Sport Industries Valve Stem Seals Set (16pcs) for Mini Cooper R55 R56 R57 R58 | Replaces OEM 11340033950

Valve stem seals from Street Sport Industries, replacing OEM part number 11340033950, are designed to restore proper oil control at the valve guides during cylinder head service. This 16-piece valve seal set fits Mini Cooper chassis applications R55, R56, R57, and R58, making it a dependable option for rebuilds, maintenance, and preventative repairs. Worn seals can lead to oil seepage, smoke, and carbon buildup; replacing them helps support cleaner running and more consistent performance. This set is intended for direct replacement, please confirm OEM number and application fitment before purchase.

• 🔵OEM-STYLE REPLACEMENT YOU CAN TRUST (11340033950): Built as a direct replacement for OEM #11340033950, this valve stem seal set is designed for correct fit and function during cylinder head service. Ideal for maintenance, rebuilds, or restoration work on Mini Cooper engines where fresh sealing matters.
• 🔵HELPS REDUCE OIL CONSUMPTION & SMOKE: Worn valve seals can allow oil to seep past the valve guides, contributing to oil burning, start-up smoke, and carbon buildup. These valve stem seals help restore proper oil control for cleaner operation and more consistent performance.
• 🔵COMPLETE 16-PIECE SET FOR A FULL HEAD SERVICE: Includes 16 valve seals to support a complete refresh during a head job so you can replace old, hardened seals all at once instead of mixing new and used parts. Great for preventative service while you already have the valvetrain apart.
• 🔵FITS MINI COOPER R55 R56 R57 R58 APPLICATIONS: Designed for Mini Cooper chassis codes R55, R56, R57, and R58. Perfect for mechanics and DIY builders doing cylinder head work, always verify OEM number and vehicle fitment before ordering to ensure compatibility.
• 🔵SECURE SEALING DESIGN FOR LONG-TERM USE: Manufactured for a snug, stable fit on the valve guide area to support consistent sealing as the engine cycles through heat and RPM. A smart replacement choice when addressing leaks, oil control issues, or refreshing an aging engine.