Water Pump Underdrive Pulley

Pulleys & Belts - Water Pump Underdrive Pulley
Pulleys & Belts - Water Pump Underdrive Pulley

Water Pump Underdrive Pulley

14 reviews
Regular price $69.99
/
  • In stock, ready to ship
  • Inventory on the way

Dyno testing our 5.5" underdrive pulley on a near stock L36 showed 3WHP gained at 6k rpm. In car testing shows only a 2 deg increase in operating temps over stock. Higher gains are possible depending on your engine combination. Pulleys are available in a high gloss black anodized finish.

  • 8% underdriven
  • dyno proven horsepower
  • lightweight design saves a pound of rotating mass
  • increases water pump life expectancy
  • better fuel economy

One size larger than stock belt recommended.

Does NOT fit HBody cars because of their front engine mount. Bonneville, Park Ave, & LaSabre.

 

Water pump pulley: 115 in/lbs.

Customer Reviews
4.9 Based on 14 Reviews
5 ★
86% 
12
4 ★
14% 
2
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • 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 States United States

Worth 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 United States

Underdrive pulley

it fit good an very light compared to the oem

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.

More from 3800
Electronics - ZZP 1.0 PCM
Electronics - ZZP 1.0 PCM
ZZP 3800 1.0 PCM
from $150.00
425 reviews
Electronics - PCM Update
Electronics - PCM Update
3800 PCM Update
$60.00
38 reviews
Turbo Parts & Kits - Z3 Turbo Kit
Turbo Parts & Kits - Z3 Turbo Kit
Z3 Turbo Kit
from $2,439.99
4 reviews
ZZP W-Body Coilovers
$999.99
25 reviews
Pulleys & Belts - ZZP 1" Offset Pulleys
Pulleys & Belts - ZZP 1
ZZP 1" Offset Pulleys
from $79.99
4 reviews
Camshafts & Valvetrain - ZZP 1.65 Rocker Arms
Camshafts & Valvetrain - ZZP 1.65 Rocker Arms
ZZP 1.65 Rocker Arms
$269.99
10 reviews
Recently viewed