Restore reliable power delivery to your engine's accessories with this premium Cascadia Belt Tensioner Assembly DD15 by FleetPro Parts & Tires. Specifically engineered for 2008-2026 Freightliner Cascadia models equipped with the 12.8L Detroit Diesel DD13 and DD15 engines, this heavy-duty tensioner ensures your serpentine belt maintains perfect alignment and tension. A failing tensioner can lead to belt squeal, loss of alternator charge, water pump failure, and ultimately, an unexpected breakdown. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets and owner-operators nationwide.
Eliminate Belt Squeal: The Cascadia Belt Tensioner Assembly DD15 Advantage
This Cascadia Belt Tensioner Assembly DD15 is overbuilt to survive the relentless vibrations and high under-hood temperatures of long-haul trucking. Constructed from industrial-grade steel rather than cheap aluminum, it houses a high-tension internal spring designed to absorb shock loads from the AC compressor and alternator. The 2.95-inch diameter pulley features a precision-machined 10-groove design, allowing for smooth, vibration-free serpentine belt routing that extends the life of all your front-end accessory drive (FEAD) components.
As we continue to build the largest inventory of commercial truck parts in Illinois, we prioritize engine hardware that balances industrial strength with ease of installation. Serving as a direct exact-fit replacement for dozens of OEM and aftermarket numbers-including Detroit Diesel A4722001570, Dayco 89498, and Gates 38667-this complete assembly is ready to bolt right on. Upgrade your accessory drive today with a high-performance tensioner built for the long haul.
Vehicle Fitment & Compatibility
This heavy-duty steel belt tensioner is precision-engineered for the following commercial applications:
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Make: Freightliner
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Model: Cascadia
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Engine Manufacturer: Detroit Diesel
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Engine Models: 12.8L DD13 & DD15
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Years: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Direct Replacement & Cross-Reference Numbers:
This serpentine belt tensioner serves as a direct exact-fit replacement for the following part numbers:
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Freightliner / Detroit Diesel OEM: A4722000170, A4722000270, A4722000570, A4722001070, A4722001370, A4722001570, A4722001670, EA4722000470, EA4722001070
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DDE / DET OEM Variations: DDE 4722001070, DDE A4722001370, DDE A4722001570, DDE A4722001670, DDE EA4722000970, DDE EA4722001070, DDEA4722001570, DET A4722001570, DET EA4722001070
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Dayco: 89498, 89498DAY, 2428-89498
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Gates: 38667
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Continental: 49603
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Automann: 814.89498, 819.46070
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Other Aftermarket: FRT-A4722001370 / FRTA4722001370 (Newstar), GA38667, GT 38667, GY49603, S-27125 / S27125 (Newstar), SK38667 (SKP), TF/DDEEA4722001070, TFDDEEA4722001070
Technical Specifications
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Belt Type: Serpentine
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Material: Heavy-Duty Steel
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Outside Pulley Diameter: 2.95"
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Pulley Groove Quantity: 10 Grooves
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Pulley Type: Smooth / Grooved Combo
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Brand: FleetPro Parts & Tires
Cross references: A4722000170 • A4722000270 • A4722000570 • A4722001070 • A4722001370 • A4722001570 • Dayco 89947 • Detroit A4722000470 • Detroit A4722001670 • Detroit A4722000970
