The Chelsea 660 Series Power Take-Off, part number 660XQAHX-V3GH or 660XQAHXV3GH, is a 6-bolt mounted PTO designed for medium to heavy duty vocational applications including dump trucks, aerial devices, service trucks, and snow removal equipment. It uses a wire/cable mechanical shift mechanism and delivers an intermittent torque rating of up to 375 lb-ft (508 Nm) for the 660 Series - verify actual ratings on the Chelsea application pages for this configuration. The 1-1/4" round output shaft with key fits Eaton/Fuller, Hino, Volvo/Mack, and other compatible transmissions. Output shaft power reaches 36 HP at 500 RPM, 71 HP at 1,000 RPM, and 107 HP at 1,500 RPM. Cast iron bearing caps and tapered cone bearings on the output shaft contribute to the series' long service life. Call us to confirm proper fit for your transmission and application.

The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications including blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal. The series offers 26 output options, four internal speed ratios, and ten shift options. Output configurations include SAE A, SAE B, and ISO 7652 pump flanges as well as driveline outputs. Continuous operation is supported with a 30% torque de-rating applied.
Features
6-bolt mounting fits most popular manual transmissions including Eaton/Fuller, Hino, and Volvo/Mack
Wire/cable mechanical shift mechanism
1-1/4" round output shaft with key
Intermittent torque capacity up to 375 lb-ft (508 Nm) for the 660 Series - check application pages for actual rated values
One-piece gears for higher torque capacity
Cast iron bearing caps and greaseable shaft options for extended service life
Tech Specs
- Intermittent Torque: 375 lb-ft / 508 Nm (Check Application Pages for Actual Torque Ratings)
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with Key
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP / 27 kW (500 RPM), 71 HP / 53 kW (1,000 RPM), 107 HP / 80 kW (1,500 RPM)
- Compatible Transmission Manufacturers: Eaton/Fuller, Hino, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information

The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications including blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal. The series offers 26 output options, four internal speed ratios, and ten shift options. Output configurations include SAE A, SAE B, and ISO 7652 pump flanges as well as driveline outputs. Continuous operation is supported with a 30% torque de-rating applied.
