CHELSEA
281
Series PTOs
Configuration shown for reference.
Series overview
Hydraulic PowerShift
architecture.
The Chelsea 281 is a 10-bolt Hydraulic PowerShift PTO family for Allison 3000/4000 transmission applications.
Its hydraulic clutch architecture makes transmission, control and lubrication details central to configuration review.
Within SUNY's Chelsea PTO range, the 281 is the 10-bolt Hydraulic PowerShift family; the 442 and 489 use 6-bolt and 8-bolt architectures respectively.
- Mounting
- 10-Bolt
- Shift / control
- Hydraulic PowerShift
- Application path
- Allison 3000 / 4000 families
Final PTO configuration is confirmed by the complete model code and application details.
Find your configuration
Configuration records
36 complete model codes available for enquiry. Search your code, review its configuration, or send an unlisted reference. Availability and application are confirmed in your quotation.
6 of 36 configuration records shown
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Product details
PowerShift.
Control & lubrication.
The commercial references shown here use pressure lubrication. Shift voltage and control arrangement follow the complete model code.
Confirm the hydraulic supply and transmission control requirements for your specific installation.
Discuss this applicationOutput interface
Confirm your
connection.
Flange, pump-mount and driveline references differ by output suffix.
Representative series photograph. The required output, assembly arrangement and clearance are confirmed by complete code.
Application guidance
Start with the
reference you have.
Have a complete PTO code?
Send it directly with your quantity and destination.
Need a fitment review?
Share the specific transmission model and the pump or output connection you need. The Allison family name alone does not confirm every 281 configuration.
A model code or transmission reference is enough to start. You can add application details during the conversation.
Contact technical salesTechnical resources
Reference the series.
Confirm the complete code.
Manufacturer references for the Chelsea 281 Series cover housing arrangements, output interfaces and selected series outlines. Use the complete PTO code to confirm the applicable drawing and application conditions.
Housing and arrangements
281 housing and assemblies 3 / 5 / 8 reference.
HY25-2281-M1 · April 15 2026 · PDF p15
Output flange and shaft dimensions
Suffix-specific flange and shaft dimensions.
HY25-2281-M1 · April 15 2026 · PDF p16
Series outline and specifications
Series outline and conditional specification reference.
HY25-0208-B1 · November 2025 · PDF p3
Need the applicable drawing?
Send the complete PTO code so SUNY can confirm the appropriate reference.
Request DrawingSupply / ordering
Discuss your
Chelsea 281 requirements.
Send the complete PTO code, quantity and destination for a quotation.
Availability and lead time are confirmed with the quotation.
Contact Sales