Dana is promising to improve fuel mileage, reduce maintenance costs and increase driver comfort with its new line of single-drive axles for medium-duty trucks. The Spicer S140 series single reduction axles are available now, and replace all previous 17,000-to 19,000-lb Spicer drive axles, the company reports. They can be spec’d on any make and model straight truck chassis with gross axle weight ratings of up to 19,000 lbs. The new axles are 85 lbs lighter than the models they’re replacing, leading to fuel economy improvements, Dana says. The Spicer S140 series axles are suited for applications with GVWs of 31,000 lbs, or 33,000 lbs under specific application approvals. For more info, contact Roadranger at 800-826-4357.

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Ridewell Suspensions and Polar Tank Trailer have combined to release the RAR-240 suspension featuring stainless steel hangers and upper spring plates. It’s suited for a wide range of tank trailers, exclusively through Polar Tank, the companies have announced. The manufacturers claim the new suspension boasts an improved appearance and durability and also lead to more efficient production at Polar Tank. It’s well-suited for pretty much every kind of on-or off-highway tanker trailer and is available in under-and overslung configurations rated at 25,000 and 30,000 lbs.

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Bergstrom has introduced a new battery-powered, idle-free cab comfort system for day cabs. The NITE Day Cab No-Idle System provides idle-free air-conditioning using one or two deep-cycle AGM batteries. The truck’s batteries are protected from discharge by a separator, the company says. Components include a compressor and evaporator, which are installed behind the truck’s seats. It comes with an optional heating system that burns about 0.05 gallons of fuel per hour, the company says. The system is CARB-approved and available now through major OEMs and Bergstrom Kysor. For more, see www.bergstrominc.com.

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Walk-in vans built by Freightliner Custom Chassis (FCC) can now be retrofit with hybrid-electric drivetrains, according to the company. The retrofit program began last November and so far about 100 MT- 45 walk-in van chassis have been fitted with hybrid components, the company says. It allows fleets to capitalize on the lower emissions and fuel consumption offered by hybrids without the cost of purchasing an entirely new vehicle. The retrofit program involves removing old powertrain equipment and replacing it with the Eaton hybrid-electric system.