RShrimp
OBS Enthusiast
1990 C1500 with 5.7 v8 and AC. I need to replace the idler pulley on the tensioner which should be a no brainer but having a part ID issue.
Parts lookup calls for a GM 10129560 which crosses to Dorman 419-610. OK but those are smooth pulleys with no flange. The one on the truck has side guides or flanges???? Question is: Is the one currently on the truck the wrong one or did I but the wrong one?
Pic 1 of truck and pic 2 of new pulley
Parts lookup calls for a GM 10129560 which crosses to Dorman 419-610. OK but those are smooth pulleys with no flange. The one on the truck has side guides or flanges???? Question is: Is the one currently on the truck the wrong one or did I but the wrong one?
Pic 1 of truck and pic 2 of new pulley
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