Store a steady reserve of engine vacuum for the systems that depend on it with the Dorman - HELP Vacuum Reservoir 47077. This canister holds a pocket of vacuum so vacuum-operated components have a stable supply to draw on when manifold vacuum drops under load. It drops in across a long list of GM cars and trucks — including the 1985-1986 Buick Century, 1984-1998 Buick Regal, 1985-1995 Chevrolet Astro, 1984-1996 Chevrolet Corvette, and 1983-1986 Chevrolet C10 [All] — with many more on the Buyer's Guide tab.
- Direct replacement: engineered to drop in like the original on the listed applications.
- Plastic construction in a black finish.
- One vacuum port and one hose connector.
- Ideal replacement for an original reservoir that is missing or damaged.
If a cracked or leaking vacuum reservoir is the cause of weak vacuum reserve to your vacuum-operated accessories, this replaces it. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether any originals may be reused. Country of origin: China.
Interchange: 15-72234 · 1572234 · 14056624
Manufacturer part number 47077
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this vacuum reservoir do?
It stores a reserve of engine vacuum so vacuum-operated systems have a stable supply to draw on when manifold vacuum drops under load, such as during acceleration.
Which vehicles does the 47077 fit?
It's a direct-fit replacement for a wide range of 1983-1999 GM applications — Buick, Cadillac, Chevrolet and GMC. See the Buyer's Guide tab for the full list of models and years.
What is this reservoir made of?
It is made of plastic with a black finish, engineered as a replacement for a missing or damaged original vacuum reservoir on the listed vehicles.
Does it include mounting hardware?
No. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether the originals may be reused.
What part numbers does this reservoir interchange with?
It cross-references 15-72234 (also listed as 1572234) and 14056624. Its own manufacturer part number is Dorman - HELP 47077.
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