Dayco 17730 accessory drive belt for the 2014-2017 Mack CXU 11.9L and other vehicles carries engine power to the belt-driven accessories. Depending on the truck, this Dayco accessory drive belt drives the fan, alternator, power steering, air conditioning or air brake compressor.
Cracked or frayed cogs, squealing at start-up or a slipping fan or alternator drive can mean the belt is worn, though a weak tensioner or a misaligned pulley can be behind them, so find the cause before swapping the belt.
This accessory drive belt is listed for a wide range of Mack, Ford, GMC, Kenworth, International and Western Star models, including the 1989-1991 Mack CH 11.0L and the 1989-1998 CH 11.9L, and the 1992 Mack RD 11.0L and the 1992-1997 RD 11.9L. The 2014-2017 Mack CXU 11.9L takes two, and the quantity changes from one vehicle to the next.
Fit and size
Build and materials
Interchange: L38-1855 · JC-734 · 25-18555 · 25-18555-2 · 25-9730 · 25-9730-2 · 25-9730HD · 12.5X1855 · 17-732
2T17730 · 9730HD · FB17730 · RPF3730 · 9730 · 73017 · 13A1855 · 8454 · 8625 · 17731 · JC727
This part cross-references / interchanges with the following part numbers:
Does the Dayco 17730 accessory drive belt fit the 2014-2017 Mack CXU 11.9L?
Yes. Dayco 17730 is listed for the 2014-2017 Mack CXU 11.9L, which takes two. For another truck, look up your year, model and engine on the Buyer's Guide tab.
What temperature range is this accessory drive belt rated for?
Dayco 17730 has an operating temperature range of -35 F to 175 F (-37.2 C to 79.4 C).
Is this accessory drive belt banded or a single belt?
This accessory drive belt is a single belt, not banded. It has bottom cog construction and a synthetic rubber compound.
What does a worn cogged accessory drive belt look like?
Splits in the cog valleys, frayed edges, a glazed shiny face or squealing can show wear. With the engine off and cool, you can look the belt over for these.
Does 25-9730 interchange with the Dayco 17730 accessory drive belt?
Yes. 25-9730 is on the interchange list for Dayco 17730, along with other cross-reference numbers printed at the bottom of the page.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
