Bosch 8185 OE Fine Wire Double Platinum Spark Plug

The Bosch 8185 (ZR5TPP33) OE Fine Wire Double Platinum Spark Plug is engineered to deliver superior performance and extended service life for high-performance engines. This premium spark plug features a heat-fused platinum center electrode and a laser-welded platinum inlay ground electrode, providing three times the longevity of conventional copper spark plugs while meeting original equipment specifications.

Key Features:

• Fine wire platinum center electrode (0.6mm) reduces voltage requirements by up to 24% for improved ignitability and performance
• Tapered, yttrium-enhanced ground electrode extends service life and improves access to air/fuel mixture
• Pre-gapped at factory to 0.031" (0.8mm) for quick, hassle-free installation
• Nickel-plated rolled threads provide superior corrosion resistance and eliminate need for anti-seize compound
• 12mm thread diameter with 1.25mm pitch and 26.5mm reach
• Heat range 5 with 8K ohm resistor for reliable ignition and reduced electromagnetic interference
• 360-degree continuous laser welding increases durability for maximum service life
• 14mm bi-hex size for easy installation with standard tools

This spark plug is designed for demanding applications in BMW and other high-performance vehicles. The extended metal shell design and gasket seat type ensure proper fit and optimal combustion efficiency. Torque specifications: 11-18 lb-ft for cast iron heads, 11-15 lb-ft for aluminum heads.