Overview Reviews Product Description J18 Adjustable Downstream Injector 1.8 MM 2.0 - 3.0 G.P.M. 3200 PSI 0-15% Injection rate 200°F Temp. 3/8'' MPT inlet & outlet Product Videos Custom Field Product Reviews Write a Review Write a Review × GP 248 - Adjustable Downstream Injector, J18, Up to 2.6 GPM Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *