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Old 01-31-2019, 08:24 AM   #1
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Belt Tensioner

hi all
anyone have p/n for gates tensioner for 2003 8.1 vortec mine has smooth pulley not ribbed.....2003 36' dolphin


thanks for any info
kevin
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Old 01-31-2019, 09:08 AM   #2
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You need to locate a parts place with a staff member(s) who are over 50. They will be able to match your part because the 8L Votrec has been around for a long time and these chronologically gifted parts pickers have seen 'em all.
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Old 01-31-2019, 09:16 AM   #3
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From OEMYS web site:


WH12581203
Serpentine Belt Tensioner
OEM

38258
Serpentine Belt Tensioner
AC Delco

12581203
Serpentine Belt Tensioner
GM

38258
Serpentine Belt Tensioner
Gates

89430
Serpentine Belt Tensioner
Dayco

38258
Serpentine Belt Tensioner
NAPA


12580771
Idler Pulley
GM

36299
Idler Pulley
Gates

36299
Idler Pulley
NAPA

I am currently running tensioner and idler pulleys from NAPA.


Jim
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Old 02-08-2019, 07:14 AM   #4
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Quote:
Originally Posted by onlakegaston View Post
From OEMYS web site:


WH12581203
Serpentine Belt Tensioner
OEM

38258
Serpentine Belt Tensioner
AC Delco

12581203
Serpentine Belt Tensioner
GM

38258
Serpentine Belt Tensioner
Gates

89430
Serpentine Belt Tensioner
Dayco

38258
Serpentine Belt Tensioner
NAPA


12580771
Idler Pulley
GM

36299
Idler Pulley
Gates

36299
Idler Pulley
NAPA

I am currently running tensioner and idler pulleys from NAPA.


Jim
This is a perfectly timed thread I have been experiencing belt squeaking (not squealing) for some time now I had a roadside emergency which required me to replace the fan belt and tensioner but the squeak didn't go away so now I'm thinking it may be the pulley. The squeak will go away with acceleration of the motor. Also after warmup it is less noticable.

At idle if I spritz the belt with water it also goes away. Am I on the right track thinking it's a bad pulley?

2005 DolphinLX 8.1L Vortec. 49000 miles.

Thanks
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