Dayco 89317 belt tensioner for the 2006-2011 Buick Lucerne V8 4.6L and other vehicles keeps the engine's drive belt under tension. Called a serpentine belt tensioner by many shoppers, it takes up slack so the belt keeps driving the engine accessories.
A worn Dayco belt tensioner can show up as belt squeal or chirping, a fluttering belt, or a pulley that grinds or wobbles. Before you replace it, rule out a worn belt and tired accessory bearings, since a different part may be behind the noise. The 2006-2011 Buick Lucerne V8 4.6L takes one.
This belt tensioner is a direct-fit replacement for the 2006-2011 Cadillac DTS and the 1995-2005 Cadillac DeVille, among other Cadillac, Buick, Oldsmobile and Pontiac models. If your car is not named here, look up its year and engine in the "Vehicles it fits" section to see whether this tensioner applies.
Fit and size
Build and materials
Interchange: 419-122
38197 · 49299 · 45566 · 5566 · 999417A · 6601935
This part cross-references / interchanges with the following part numbers:
Will Dayco 89317 work as a 1995-2005 Cadillac DeVille belt tensioner?
Yes. Dayco 89317 fits the 1995-2005 Cadillac DeVille, which takes one.
How big is the pulley on the Dayco tensioner?
The single pulley on Dayco 89317 is 51.9 mm in diameter and 15 mm wide, with three grooves for a serpentine belt.
Does this Dayco belt tensioner assembly need to be adjusted by hand?
No. It is an automatic type, so this belt tensioner holds belt tension on its own instead of being set manually.
What can a worn belt tensioner sound or look like?
Belt squeal or chirping, a belt that flutters, or a pulley that grinds or wobbles can be signs of a worn tensioner.
Does Dayco 89317 replace tensioner number 419-122?
Yes. 419-122 is one of the numbers Dayco 89317 replaces, along with 38197 and 6601935.
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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.
