The Chelsea Series 281 Power Take Off Assembly, part number 281GMFJP-B3RK or 281GMFJPB3RK, is a continuous-duty PTO built for demanding truck and fleet applications. It features nine speed ratios spanning both low and high ranges, giving operators flexibility across a wide variety of driven-equipment needs. Ductile iron bearing caps deliver 117% greater strength compared to gray iron caps. An O-ring sealing configuration reduces the effects of vibration and improves clamp load retention. Rotatable cast-iron flanges cut interference clearance issues, and a positive-stop driveline output protects oil seals from coupling damage. The Wet Spline Lubrication option extends shaft service life by 7 to 10 times. SmartStart reduces shock load at engagement, and the Electronic Overspeed Control (EOC) safeguards connected equipment. Cross-reference numbers include 280GMFJP-B3RK and 280GMFJPB3RK. Call us to confirm proper fit for your transmission and application.
Features
Nine speed ratios covering low and high speed ranges
Ductile iron bearing caps rated 117% stronger than gray iron
O-ring sealing configuration reduces vibration effects and improves clamp load
Positive-stop driveline output eliminates oil seal damage from coupling
Wet Spline Lubrication option provides 7 to 10 times greater shaft service life
SmartStart and Electronic Overspeed Control (EOC) protect driven equipment at start-up and during operation
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
