I need to identify this part

Tiny
DAVID RIEMENSCHNEIDER
  • MEMBER
  • 1999 CHEVROLET
  • 7.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
This part is right next to my master cylinder, but I have no idea what it is called. It looks to need replace but I first need to know what it is. Please help! (Chevrolet c2500) David
Tuesday, February 21st, 2017 AT 3:58 PM

2 Replies

Tiny
DAVID RIEMENSCHNEIDER
  • MEMBER
  • 6 POSTS
Here are some pictures of the part.
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Tuesday, February 21st, 2017 AT 3:59 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,573 POSTS
That is the hydroboost accumulator. It is part of the power brake booster. There are a few versions of them depending on the brake capacity of the vehicle. That looks like a gold one, those are pressurized to around 350psi with nitrogen and used on Disc/Drum brake systems.

They are removable in the vehicle.

But before you start be sure that you can even get the part. The last I knew only the folks who are authorized re-builders could get them, and they were over half the price of a complete rebuilt booster then. The entire boost unit is not hard to swap out if you follow the proper procedures.
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Wednesday, February 22nd, 2017 AT 12:24 AM

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