Product Details: 
2" Air/Fuel Ratio, Elec, Z-Series 
Air / Fuel Ratio 
Product # 2675 
Size: 2 1/16" (52.4mm) 
Type: Full Sweep Electric 
Range: Lean - Rich 
Notes: 
Will work with most factory narrow-band O2 sensors. May require model 2244 in the Accessories Section.