Horizontal Pressure Washer Pump 4000PSI 4GPM 1″ Diameter Shaft for RSV4G40 by | Jul 21, 2026• Triplex Plunger Pump. Pump Speed: 3400 RPM. • Direct Drive with Gas Flange 9.0-13.0 HP SAE. • Drive Side: Standard right. • Forged brass head. Will this fit my car?. When will my order be dispatched?.