Fischer & Plath 07-11-9-963-129 Copper Sealing Washer / Crush Washer

The Fischer & Plath 07-11-9-963-129 is an OEM-specification copper sealing washer (crush washer) designed for use on oil drain plugs, banjo bolt fittings, and other threaded fasteners requiring a reliable metal-to-metal seal. Manufactured from soft copper, this washer deforms slightly under torque to create a leak-free seal against machined surfaces, making it an essential part of any oil change or hydraulic line service.

Key Features:

• OEM-quality copper construction for excellent conformability and corrosion resistance
• Designed to crush and seal upon tightening, eliminating leaks at drain plug and banjo bolt interfaces
• Direct replacement for BMW OEM part number 07119963129
• Single-use design ensures a fresh, reliable seal every time
• Compatible with engine oil, transmission fluid, and hydraulic fluid applications

This copper crush washer is a low-cost, high-importance consumable that should be replaced every time a drain plug or banjo bolt is removed. Using a new washer prevents stripped threads, fluid leaks, and costly repairs down the road.