Mr Gasket 2668 Water Neck Housing O-Ring – Fits Chevy, Pontiac, Mopar, Buna

This is the Mr Gasket 2668 water neck housing o-ring, but it’s actually sold here under the OR4U brand.

Either way, it’s the same cross—works with Chevy, GM, Pontiac, and Mopar applications.

Buna material, brand new, supersedes part numbers 2668, MRG-2668, 720-2668.

If you’re piecing together an engine or replacing a dried-out crusty seal, this is the little rubber donut that stops the drip.

Small part, big difference.