MAHLE B33806 Engine Crankcase Vent Valve Seal

The MAHLE B33806 is a replacement engine crankcase vent valve seal engineered to restore a proper airtight connection within the positive crankcase ventilation (PCV) system. This seal prevents oil vapors and combustion blow-by gases from escaping through the crankcase vent valve, helping to maintain correct crankcase pressure and protect engine integrity.

MAHLE is a globally recognized OE (original equipment) supplier, and their sealing components are manufactured to strict OEM tolerances using high-quality elastomer materials that resist oil, heat, and engine chemicals over the long term.

Key Features:

• Direct OEM-quality replacement for worn or damaged crankcase vent valve seals
• Engineered to MAHLE's precise OE specifications for proper fit and function
• Manufactured from durable, heat- and oil-resistant elastomer material
• Helps maintain correct crankcase pressure and PCV system efficiency
• Prevents oil leaks and vapor escape at the crankcase vent valve interface
• Part of MAHLE's comprehensive engine sealing product line

Replacing a deteriorated crankcase vent valve seal is an essential part of PCV system maintenance. A failed seal can lead to oil leaks, increased crankcase pressure, rough idle, and elevated hydrocarbon emissions. The MAHLE B33806 provides a reliable, cost-effective solution to restore system integrity.