Product Overview MKL 4.0/40-W 4.0GPM 4000PSI 3400RPM 1" HOLLOW SHAFT GAS FLANGE SUPER DUTY M-SERIES Oversized bronze connecting rod assemblies (1 lb. each) Heavy duty reinforced heads with external and internal bracing Large diameter niploy plated valve caps with increased thread depth Reinforcing ring on inlet and discharge ports Extra heavy duty taper roller bearings Deeper back covers for increased oil capacity (24oz. capacity) SPECIFICATIONS: Direct engine, gas engine flange 1" hollow shaft with mounting flange and set screw GPM: 4.0 maximum PSI: 4000 Maximum HP: 16 GAS RPM: 3400 Maximum Seal kit: US-7 Valve kit: UD-30 Weight: 28 lbs. Reviews (No reviews yet) Write a Review