What’s the difference between this seal and the O’ring for the vacuum pump?

there is only a seal in the head and a gasket between head and pump that i know of there may be a o ring in a pump overhaul kit if you can find one

How does one remove the old gasket and install the new one?

it depends if head is on are off engine to remove i used a seal puller with ajustable handle try to just hook the seal with out puting a scratch in the head to install the seal use a wheel race installer that the flat side just will fit in the hole of the head put the seal as square in the hole as you can put race tool flat side to seal it would help to have extra hands use as long of a pry bar that will clear hood to push on installer to get seal flush you may have to use a block of wood near the firewall area it's not easey hope this helps i have only did this on 2 cadillac ats

Does it fit chevy malibu 2013 2.5

Yes it does I just got this part last month and it fit and works fine

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⚡ Upgrade your GM ride with precision you can trust!

TRUSTED OEM QUALITY - Genuine GM part guarantees reliability and longevity, avoiding costly replacements.
COMPACT LIGHTWEIGHT - At just 17 grams and 6.6 cm size, it fits seamlessly without adding bulk.
EFFORTLESS INSTALLATION - Precision fit means you spend less time under the hood and more time on the road.
ENGINEERED FOR PERFECTION - Designed, tested, and warranted specifically for GM vehicles to ensure flawless performance.
SUPPORT AT YOUR FINGERTIPS - Easy access to professional installation via GM dealers or certified service centers.

The GM Parts 12668429 Vacuum Pump Seal is a genuine, precision-machined component designed and tested exclusively for GM vehicles. Lightweight and compact, it ensures a perfect fit for hassle-free installation, backed by GM’s warranty and made in the USA for trusted quality.

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TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

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The product exactly matches the description. Very satisfied with my purchase.

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Manufacturer	acdelco
Brand	GM Genuine Parts
Model	Genuine GM Parts
Product Dimensions	6.6 x 6.6 x 1.02 cm; 17 g
Item model number	12668429
Exterior	Machined
Manufacturer Part Number	12668429
OEM Part Number	12668429
Position	Center
Size	medium
Assembly Required	No
Manufacturer	acdelco
Country of Origin	USA
Item Weight	17 g

GM Parts 12668429 Vacuum Pump Seal

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