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!

EFFORTLESS INSTALLATION - Compression inlet and outlet ports sized at 0.54 inches for quick, secure connections.
DURABILITY YOU CAN TRUST - Crafted with premium materials ensuring long-lasting brake system reliability.
PRECISION VACUUM CONTROL - One-way valve design prevents air intrusion, maintaining optimal brake booster performance.
SEAMLESS OEM INTEGRATION - Engineered to GM original equipment specs for flawless fit and function.
GM RECOMMENDED REPLACEMENT - Directly endorsed by GM to keep your vehicle running at factory standards.

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

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€ 30.88

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Brand	GM Genuine Parts
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

GM Genuine Parts 179-1266 (18022219) Power Brake Booster Vacuum Check Valve Kit with Check Valve and Grommet

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