SKU: 6603474374

1955-59 Chevy, GMC Truck Hydropower Hydraulic Brake Assist System, Firewall Mount

Sale price$358.15 Regular price$397.94
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

1955-59 Chevy, GMC Truck Hydropower Hydraulic Brake Assist System, Firewall MountOur Hydropower hydraulic brake assist power booster fits 1955 59 Chevy and GMC trucks and generates up to 1800psi of line pressure to the brake calipers. It is fitted with a POL master cylinder and proportioning valve. This kit is powered by hydraulic line pressure from the power steering pump. Firewall and valve cover clearance is equivalent to a 7" diameter vacuum booster. The firewall brackets are correct for 55 59 2nd series GM truck applications.

Our Hydropower hydraulic brake assist power booster fits 1955-59 Chevy and GMC trucks and generates up to 1800psi of line pressure to the brake calipers. It is fitted with a POL master cylinder and proportioning valve. This kit is powered by hydraulic line pressure from the power steering pump. Firewall and valve cover clearance is equivalent to a 7" diameter vacuum booster. The firewall brackets are correct for 55-59 2nd series GM truck applications.

The average power steering pump puts out from 800psi to 1400psi line pressure. The Hydropower® uses this to convert to pressure to apply against the master cylinder. This greatly improves stopping performance and driver feedback. These hydraulic power boosters can be easily installed on an existing vacuum booster vehicle or used to convert a manual brake setup to power with ordinary hand tools and average mechanical ability.

 

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SKU: 6603474374

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4.4 ★★★★★
Based on 11 reviews
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C
Verified Purchase
Clemson Z
Houston, US
★★★★★ 1
poor quality
the middle connection is so weak, resulting separate when moving. so poor quality, not recommended. better to buy Sander etc other brands
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 4
Time
There are a lot of pieces to put together but instructions are provided that help so it only takes time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 7, 2025
G
Verified Purchase
Geospatialdude
Draper, US
★★★★★ 3
Be careful while assembling!
I have bought similair bookcases in the past...long time ago. I thought the quality back then was poor, because it was made out of compressed sawdust with glue ( composite). But these shelves are slightly less quality of those of long ago. The company has made great strides at providing the pieces with pre-drilled holes with excellent precision. However, the composite material does not have quite enough glue mixed within. So the material is ever so slightly crumbly. So once you screw in a screw, don't remove it, because if you do the screw will not hold as good. I reccomend that you add a drop of glue into each hole during assembly. The rotating screw locks are made of cheap pot-metal that will snap if you crank too hard on your screwdriver. The good news is the kit comes with plenty of extra screws, wooden dowels, and such.
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Reviewed in the United States on December 15, 2025
R
Verified Purchase
Randy Deasy
Battle Creek, US
★★★★★ 5
Not to thick or thin well made
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
I bought pink so as not to lose when doing laundry with my daughter who steels all socks lol!
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Reviewed in the United States on May 8, 2026
S
Verified Purchase
Stacey Cohick
Boise, US
★★★★★ 5
Perfect
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
They were perfect
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Reviewed in the United States on April 27, 2026

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