The fracturing pump fluid end blocks and spares are 100 interchangeable to We can supply the Spare Parts for the Pump Models as follow HQ 1400 4 fracturing pump SPM2000 5 fluid end HQ 1400 2000 Frac Pump Fluid End Asembly SPM TWS 600 Plunger Pump SPM QWS2500 Quintuplex Plunger Pump Compatible TWS 2000 2250 Frac Pump Fluid End Assembly Halliburton HT400 plunger pump Serva TPA600 pump SERVA pump TPA 400 plunger pump . TPA 600 plunger pump. TPB 600 plunger pump. TPA 400 plunger pump GD-2500 Quintuplex Plunger Pump Compatible OPI 1800AWS Frac Pump Compatible