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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🛠️ Upgrade your brake game with GM precision power!

TRUSTED BRAND LEGACY - Manufactured by ACDelco, a name synonymous with GM reliability and durability.
ULTIMATE VACUUM SEAL - One-way valve design prevents air leaks, ensuring consistent brake booster performance.
LIGHTWEIGHT COMPACT - At just 0.16 ounces and 3.5x2.2x1.5 inches, it fits seamlessly without bulk.
GM RECOMMENDED OEM QUALITY - Engineered to match original factory specs for flawless fit and function.
PRECISION COMPRESSION CONNECTIONS - 0.54-inch inlet and outlet ports for secure, leak-free installation.

The ACDelco GM Original Equipment 179-1266 Power Brake Booster Vacuum Check Valve Kit is a GM-recommended replacement part designed to maintain optimal brake booster vacuum by preventing air backflow. Manufactured to exact GM OE specifications, it ensures perfect fit, durability, and reliable performance for your GM vehicle’s braking system.

₱2061

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The product quality is outstanding. Exactly what I needed for my work.

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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
Valve Type	check valve
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

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

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