Each prop incorporates a rubber safety clutch to protect the engine and drive train from impact and harmonic vibration!Proven performance with over 33 years of marine engineering, propeller design and boat manufacturing in a high-performance boat propeller. Whether you want a spare or need to upgrade your current prop you won't find one better than Propco. Aluminum or stainless steel (SS) designed props and metals undergo strenuous testing. The Propco 4-blade props (4B) provide far superior handling in recreational and performance boating. The Aluminum Quad-R-Jet reduces torque on the steering and eliminates the need for jackplates without causing unnecessary wear on your engine's drive train. Each prop also features a virtually unbreakable cushion hub, specially engineered to meet and exceed manufacturer's original equipment standards. Unless otherwise noted, props are 3-blade aluminum with right-hand rotation and thru-hub exhaust. Mfrs. 1-year warranty. Cupped propellerIf you are now using uncupped propellars, use cupped propellers with 2" less pitch. Boats with power trim may use same pitch. QRJ-T 4-blade AL gives better hole shot, less torque on steering, better boat handling, lower planing speeds, more power and smoother running. A -Evinrude & Johnson - 1954-1981; 6.9.5-10 hp; Pin drive; Not thru-hub exhaustB -Evinrude & Johnson - 1980 thru current; 4.5-6-7 hpC -Evinrude & Johnson - 1974 thru current; 9.9-15 hpD -Evinrude & Johnson - 1953-1977; 15-18-20-25 hp; Pin drive; Not thru-hub exhaustE -Evinrude & Johnson - 1978 thru current; 25-28 hp; Spline drive; Not thru-hub exhaustF -Evinrude & Johnson - 1976 thru current; 20-25-30-35-70 hpG -Evinrude & Johnson - 1951-1985; 25-28-30-33 hp; Pin drive; Not thru-hub exhaustH -Evinrude & Johnson - 1968 thru current; 40-48-50-55-65-70-75 hp; 2&3 cylinder; Small gearcaseI -Evinrude & Johnson - 1968 thru current; 40-48-50-55-65-70-75 hp; 2&3 cylinderJ -Evinrude & Johnson - 1960-1968; 60-65-75-80-85-90 hp; Pin drive; Not thru-hub exhaustK -Evinrude & Johnson - 1968 thru current; 50-55-60-70-75-80-85-88-90-100-110-115-120-125-135-140 hp; V/4-3-2 cylinder; OMC Cobra 400L -Evinrude & Johnson - 1968 thru current; 50-55-60-70-75-80-85-88-90-100-110-115-120-125-135-140 hp; V/4-3-2 cylinder; OMC Cobra 400; 20-140 4-strokeOMC - 1989 thru current; OMC 400 Cobra; 115-120-130-135-140 hpM -Evinrude & Johnson - 1968 thru current; 50-55-60-70-75-80-85-88-90-100-110-115-120-125-135-140 hp; V/4-3-2 cylinder OMC - 1989 thru current; OMC 400 Cobra; 115-120-130-135-140 hpN -Evinrude & Johnson - 1976 thru current; 150-155-175-185-200-225-235-250-275-300 hp; V/6 & V/8; V/4 120-140 V/6; OMC Cobra 800 OMC - 1978 thru current - OMC 800 Cobra - 150-350 hp; 1990 thru current - OMC 400 Cobra - 115-120-130 hpO -Evinrude & Johnson - 1976 thru current; 150-155-175-185-200-225-235-250-275-300 hp; V/6 & V/8; OMC Cobra 800 OMC - 1993 thru current; OMC 800 Cobra; 150-185-205-260-350 hpP -Evinrude & Johnson - 1976 thru current; 150-155-175-185-200 hp; V/6 & V/8; V/4 120-140 V/6 gearcase; OMC Cobra 800 OMC - 1993 thru current; OMC 800 Cobra; 150-185-205-260-350 hp