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ZZP 3800 Water Pump Underdrive Pulley
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ZZP 3800 Water Pump Underdrive Pulley

ZZP 3800 Water Pump Underdrive Pulley

$31.50

Original: $89.99

-65%
ZZP 3800 Water Pump Underdrive Pulley—

$89.99

$31.50

The Story

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.

Ā 

Water pump pulley: 115 in/lbs.

March 2025 update: New design to match our ZZP water pump pulleys from other markets. New weight is only 0.55lbs.Ā 

ZZP 3800 Water Pump Underdrive Pulley - Image 2

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

ZZP 3800 Water Pump Underdrive Pulley - Image 3

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

ZZP 3800 Water Pump Underdrive Pulley - Image 4

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

ZZP 3800 Water Pump Underdrive Pulley - Image 5

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

Description

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.

Ā 

Water pump pulley: 115 in/lbs.

March 2025 update: New design to match our ZZP water pump pulleys from other markets. New weight is only 0.55lbs.Ā 

ZZP 3800 Water Pump Underdrive Pulley | ZZPerformance