The Chelsea 660 Series Power Take-Off, part number 660XQAHX-P3GA or 660XQAHXP3GA, is a 6-bolt mounted PTO built 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 and delivers a 1-1/4" round output shaft with keyway. The 660 Series is rated up to 375 lb-ft intermittent torque (check application pages for actual torque ratings for your specific configuration). Shaft power output runs 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Hino, and other 6-bolt manual units. Continuous operation is supported with a 30% de-rating. Call us to confirm proper fit for your transmission and application.

The Chelsea 660 Series PTO suits aerial, construction, vocational, and municipal equipment where torque demands exceed what the 442 Series provides. Twenty-six output options are available across the 660 Series, including four internal speed ratios and ten shift configurations. The cast iron housing and tapered cone bearings on the output shaft contribute to the series' load-handling capability. Tapered bearings on the input shaft replace needle bearings for greater load-bearing capacity. Applications include blower and product pumps, aerial devices, dump trucks and trailers, service trucks, and snow and ice removal equipment.
Features
6-Bolt mounting fits most popular manual transmissions including Eaton/Fuller, Volvo/Mack, and Hino
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque rating up to 375 lb-ft / 508 Nm (verify on application pages for your config)
Shaft power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
One-piece gears, cast iron bearing caps, and greaseable shaft options for extended service life
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: 1-1/4" Round with Key
- Intermittent Torque: 375 lb-ft / 508 Nm (Check Application Pages for Actual Torque Ratings)
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP (500 RPM), 71 HP (1000 RPM), 107 HP (1500 RPM) / 27 kW (500 RPM), 53 kW (1000 RPM), 80 kW (1500 RPM)
- Continuous Operation: Yes, with 30% de-rating
- Transmission Manufacturer Compatibility: Eaton/Fuller, Hino, Volvo/Mack, Other
Additional Information

The Chelsea 660 Series PTO suits aerial, construction, vocational, and municipal equipment where torque demands exceed what the 442 Series provides. Twenty-six output options are available across the 660 Series, including four internal speed ratios and ten shift configurations. The cast iron housing and tapered cone bearings on the output shaft contribute to the series' load-handling capability. Tapered bearings on the input shaft replace needle bearings for greater load-bearing capacity. Applications include blower and product pumps, aerial devices, dump trucks and trailers, service trucks, and snow and ice removal equipment.
