The Right Stuff 1973-87 GM & GMC C/K Truck, Black Hydro Boost Upper Assembly Kit Disc/Disc - (BHB735672)

Hydro-boost is the clean answer for a 1973-87 GM or GMC C/K square-body that has lost its vacuum to a big cam, a diesel swap or a crowded firewall. This black upper assembly pairs a hydraulic booster with an aluminum dual-port master cylinder and is set up for disc/disc trucks, giving you firm, consistent pedal feel without depending on manifold vacuum.

Why It's Worth It

• Power-steering-driven assist that doesn't fade when vacuum is low
• 1" bore aluminum master cylinder with 2 ports for a proper dual-circuit system
• Black finish for a factory-looking engine bay
• Comes with the bracket and pedal rod extension, so it bolts up as a package

What's Included

• Hydro-boost unit and aluminum master cylinder with cap
• Mounting bracket, brake pedal rod extension and mounting hardware
• Bleeder hoses

Before You Order

• This is the disc/disc version. Trucks with rear drums need the matching disc/drum setup.
• Hydro-boost runs off the power steering pump. Plan the pressure and return hoses, and make sure your pump can handle the extra load.
• After a disc conversion, confirm your proportioning valve suits a four-wheel disc system.

Specifications:

Bleeder Hoses Included:	Yes
Booster Diaphragm Type:	Single
Bracket Included:	Yes
Brake Pedal Rod Extension Included:	Yes
California Proposition 65:	Yes
Grade Type:	Black
Master Cylinder Bore Size:	1
Master Cylinder Cap Included:	Yes
Master Cylinder Material:	Aluminium
Master Cylinder Port Quantity:	2
Mounting Hardware Included:	Yes
Part Type:	Hydro Boost Booster & Master Cylinder Combo