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Upstream sensor
Engineered to match OEM output and reliability
NoBuzz Technology: Eliminates gauge needle flutter for stable boost readings
whether you’re a professional mechanic or a car enthusiast
930 is designed for Audi and Porsche engine conversions
Porsche Fuel Filter 91111017602 – Bosch 71021 ABS1420HU-D Upstream sensorThe Bosch Fuel Filter 91111017602 (also known as Bosch 71021) delivers clean fuel to your Porsche's engine, protecting sensitive fuel system components from debris and contamination. Designed for early Porsche 911 and 924 models from 19731980, it helps maintain smooth engine operation and prevents fuel pump strain. Key Features & Benefits OEM Spec Filtration: Traps particles as small as 10 microns to safeguard injectors and carburetors. Direct Fit:
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