what size of hoses fits the two ends

One end is inserted into the booster and the other end uses an 11/32 inch vacume hose.

Will this work on a 2005 silverado 1500 4x4

The local big box auto parts store shows the same part number 179-1266 - 2005 Silverado 5.3l

Will this fit a 08 Chevy Impala?

No. It’s application specific..

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ACDelco GM Original Equipment 179-1266 Power Brake Booster Vacuum Check Valve Kit with Check Valve and Grommet

Product ID: 14162657

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Details

Brand
ACDelco
Item dimensions L x W x H
3.5 x 2.2 x
Exterior Finish
Machined
Inlet Connection Size
0.54 Inches
Inlet Connection Type
Compression
Outlet Connection Type
Compression

🔄One-way vacuum check valve

⚙️Precision GM OE fit

🛡️Durable, reliable build

Description

🛠️ Upgrade your brake system with GM precision – because your ride deserves the best!

TRUSTED OEM QUALITY - Manufactured under strict GM original equipment standards for guaranteed authenticity and function.
OPTIMIZED VACUUM CONTROL - One-way valve design prevents air leaks, maintaining consistent brake booster vacuum pressure.
SEAMLESS GM RECOMMENDED FIT - Engineered to match your GM vehicle’s original specs for flawless installation and performance.
COMPACT LIGHTWEIGHT DESIGN - At just 0.16 ounces and 3.5 x 2.2 x 1.5 inches, it fits perfectly without adding bulk.
UNMATCHED DURABILITY RELIABILITY - Crafted with premium materials to ensure long-lasting brake booster protection and peace of mind.

The ACDelco GM Original Equipment 179-1266 Power Brake Booster Vacuum Check Valve Kit is a GM-recommended replacement part designed to maintain optimal vacuum pressure in your vehicle’s brake booster. Manufactured to exact GM specifications, it ensures a perfect fit, reliable performance, and long service life, preventing air leaks that could compromise braking efficiency.

Specifications

Brand	ACDelco
Item dimensions L x W x H	3.5 x 2.2 x 1.5 inches
Exterior Finish	Machined
Inlet Connection Size	0.54 Inches
Inlet Connection Type	Compression
Outlet Connection Type	Compression
Number of Ports	2
Outlet Connection Size	0.54 Inches
Specification Met	GM
Global Trade Identification Number	00036666449563
Manufacturer	ACDelco
UPC	036666449563
Model	Check Valve Kit
Item Weight	0.16 ounces
Product Dimensions	3.5 x 2.2 x 1.5 inches
Item model number	179-1266
Manufacturer Part Number	179-1266
OEM Part Number	18022219

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