Heating and Cooling› Thermostats, Housings and Fillers

Mr. Gasket

Replacement Water Neck O-Rings Fits Water Necks: 2660, 2661, 9845, 2667, and 2663 Mr Gasket

$199.60

SKU: M00S 2668

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Mr. Gasket Water Neck O-Ring, part number 2668, is a replacement O-ring designed for use with Mr. Gasket water necks 2660, 2661, 9845, 2667, and 2663. This O-ring style seal is engineered to prevent water leaks from the thermostat housing. It is made of rubber and is suitable for Chevy V8 engines.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMr. Gasket
Part NumberM00S 2668

Videos

How to Install Mr. Gasket Water Necks

How to Install Mr. Gasket Water Necks
Installing a Water Neck Gasket :: Modern Muscle X

Installing a Water Neck Gasket :: Modern Muscle X
New Thermostat and Gasket. No More Leaks!

New Thermostat and Gasket. No More Leaks!

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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