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Earl's Performance Weld-In Oxygen Sensor Bungs

4.92 out of 5 stars 13 Customer Reviews

Earl's oxygen sensor weld fittings are the ideal way to add a sensor when converting to EFI or adding a wideband air/fuel gauge for tuning carbureted engines. The weld fittings are available in steel or stainless steel to match your exhaust system. The thread size is 18mm x 1.5 and fit most OEM and aftermarket oxygen sensors. They feature a recessed step for easy installation by drilling a hole in the exhaust system and welding the fitting in place.

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