Water Pump Underdrive Pulley
Customer Reviews
4.9 Based on 14 Reviews
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- Questions
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- serp belt work mint
- IC cai base tune
- 6000k
- engine response
- stack
- weight difference
- range
- down pipe
- size
- pulley
JA
02/27/2022
Jason A. 
United StatesWorth every penny!
04 Impala SS 3.1 pulley double stack IC cai base tune with 3 in down pipe. Definite increase in engine response off idle, also in the 5000-6000k rpm range it seems to pull better (might just be me) but this bolt on is 100% worth the money. It’s amazing the weight difference when comparing the old pulley to this one. I jumped up a half size on my serp belt work mint! BUY IT!
AJ
05/06/2021
Antone J. United States JT
05/16/2019
Joshua T. Easy first mod
Easy install for quick gain in hp I’d recommend a lower degree thermostat and make sure you order the proper belt size
OJ
06/06/2018
Osiel J. Pulley slaps right in a
Pulley slaps right in a lot lighter then OEM product. Noticed different idle and faster throttle response would definitely recommend one of these bad boys
DS
12/10/2017
David S. Underdrive water pump pulley
Very light weight when compared to stock pulley! Only needed to go 1/2 inch bigger in belt size. Idle has improved as well as revs and slight pull when accelerating. Didn’t get 5*s because it had some couple jagged edges where the belt lays that needed to be ground down, but it a very nice item.
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