GM Rear Differential Axle Vent Breather - 3/8" - Pack Of 5 - Fits 64-81 350/250/350C

Keep water and dirt out of your classic GM rear end with these axle vent breathers.

This pack comes with 5 vents, so you've got spares or enough for multiple projects.

They're the 3/8 inch size that fits many GM 10 and 12 bolt rear ends from 1964 to 1981, including the 350, 250, and 350C models.

The OEM part numbers are 8640496 and 35910.

Made in the USA, these are high-quality replacements.

If your old vent is clogged or missing, pop one of these in to let your differential breathe without letting contaminants in.