Dorman 419-685 Accessory Drive Belt Idler Pulley

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Dorman 419-685 Accessory Drive Belt Idler Pulley

Brand	Dorman 419-685
Belt Type	Serpentine
Color	Black
Grade Type	Standard
Groove Quantity	8
Inside Diameter	17
Material	Steel
Material Thickness	2.7 mm
Mounting Hardware Included	Yes
Mounting Hole Quantity	1
Outside Diameter	117
Outside Diameter	125.5
Package Contents	1 Pulley; 1 Bolt; 1 Dust Shield; 1 Bore Insert
Pulley Bearing Width (mm)	45.5 mm
Universal Or Specific Fit	Specific
Width	29
Width	37.5
Fits	Ram and Dodge · 47 vehicles

OE-style replacement. Engineered to match original pulley function and performance.

Steel construction. Built with a black finish for durable, clean-looking service.

Hardware included. Comes with a bolt, dust shield, and bore insert for installation.

Cross-references Continental 49172, Dayco 89168 and Gates 36315 for the same application. See all 4.

$89.39Free shipping

In stock · usually ships same day before 1pm CST

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Accessory Drive Belt Idler Pulley for Ram and Dodge

Dorman 419-685 is a replacement accessory drive belt idler pulley engineered to match the function and performance of the original pulley on select Ram and Dodge applications. It is built for serpentine belt systems and helps restore proper belt routing and accessory drive operation.

Key Features

Steel pulley construction with a black finish
Specific fit for select vehicle applications
8-groove design for serpentine belt systems
Single mounting hole design
Includes a dust shield and bore insert
Cross-references Continental 49172 and Dayco 89168 for the same application

Product Details

This Dorman 419-685 accessory drive belt idler pulley is designed for vehicles that use a grooved serpentine belt pulley in the accessory drive system. With an 8-groove profile, steel construction, and standard-grade bearing support, it is built to restore the pulley function needed to keep the belt tracking correctly across the drive system. It is a direct-fit replacement for select Ram 2500, Ram 3500, Ram 4000, and Dodge Ram 2500 and Ram 3500 models, including 2016-2021 Ram 2500 and 2016-2021 Ram 3500 grooved pulley applications.

Part number 419-685 is also referenced by OE-style interchange number 5086748AA. For buyers searching for a Ram 2500 idler pulley, Ram 3500 serpentine belt idler pulley, or Dodge Ram accessory drive belt pulley replacement, this part provides a specific-fit solution for the listed applications.

What It Helps Address

Belt noise caused by a worn idler pulley bearing
Improper serpentine belt tracking
Accessory drive belt vibration or flutter
Loss of pulley support in the belt routing system
Wear-related pulley surface damage on the original component

Installation Notes

Verify pulley style, groove count, and mounting configuration against the original part before installation. This pulley uses a specific fit design and includes mounting hardware, a dust shield, and a bore insert for the listed applications. Confirm vehicle year, make, model, and engine-specific notes for Ram and Dodge Ram fitment before ordering.

Quality Assurance

Dorman replacement components are engineered to match original part function and performance on the listed vehicles. Part number 419-685 is built as a standard replacement pulley for select Ram and Dodge applications, with fitment coverage spanning 2003-2021 model years in the provided catalog data.

This part fits 47 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2021	Ram	2500	6.7L	L6	N/A	Grooved Pulley
2021	Ram	3500	6.7L	L6	N/A	Grooved Pulley
2020	Ram	2500	6.7L	L6	N/A	Grooved Pulley
2020	Ram	3500	6.7L	L6	N/A	Grooved Pulley
2019	Ram	2500	6.7L	L6	N/A	Grooved Pulley
2019	Ram	3500	6.7L	L6	N/A	Grooved Pulley
2018	Ram	2500	6.7L	L6	N/A	Grooved Pulley
2018	Ram	3500	6.7L	L6	N/A	Grooved Pulley
2017	Ram	2500	6.7L	L6	N/A	Grooved Pulley
2017	Ram	3500	6.7L	L6	N/A	Grooved Pulley
2016	Ram	2500	6.7L	L6	N/A	Grooved Pulley
2016	Ram	3500	6.7L	L6	N/A	Grooved Pulley
2015	Ram	2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2015	Ram	3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2014	Ram	2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2014	Ram	3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2013	Ram	2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2013	Ram	3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2013	Ram	4000	6.7L	L6	N/A	Grooved Pulley
2012	Ram	2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2012	Ram	3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2012	Ram	4000	6.7L	L6	N/A	Grooved Pulley
2011	Ram	2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2011	Ram	3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2011	Ram	4000	6.7L	L6	N/A	Grooved Pulley
2010	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2010	Dodge	Ram 2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2010	Dodge	Ram 3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2009	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2009	Dodge	Ram 3500	—	—	N/A	Idler Pulley; L6 359CID 5.9L
2009	Dodge	Ram 3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2008	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2008	Dodge	Ram 2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2008	Dodge	Ram 3500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2008	Dodge	Ram 3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2007	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2007	Dodge	Ram 2500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2007	Dodge	Ram 3500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2007	Dodge	Ram 3500	6.7L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2006	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2006	Dodge	Ram 3500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2005	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2005	Dodge	Ram 3500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2004	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2004	Dodge	Ram 3500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2003	Dodge	Ram 2500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
2003	Dodge	Ram 3500	5.9L	L6	N/A	Various vehicle models compatible with Accessory Drive Belt Idler Pulley.
No rows match your filter.

Directly replaces or cross-references 4 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Continental — 49172Dayco — 89168Gates — 363155086748AA