Turbo reducer - 1/4 BSPT to 1/8 NPT suit EGT pyrometer gauge exhaust sockets UK
MAMBA Brass Adapter Fitting Bushing 1/4 BSPT Male to 1/8 NPT Female (Oil Pressure Gauge). This socket will fit a:1/4 BSPT hole in your exhaust and will allow a1/8 NPT sensor to be screwed in. Male : 1/4 BSPT.