Water Neck Block-Off Plates - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Fleece Performance Water Neck Block-Off Plates

Fleece Performance water neck block-off plates are thicker than the stock plate and feature an integrated square cut O-ring with no gasket required. In contrast, the OE covers are prone to leakage over time. Fleece block-off plates are an upgrade for the rear engine cover on your Duramax V8 and will stop the coolant leaks for good!

5.0 out of 5 stars ( 2 )

$55.00

Moroso Water Neck Block-Off Plates

Moroso water neck block-off plates can provide an ideal base to drill or weld your own fitting in place. They are made of aluminum and have two pre-drilled mounting holes to ensure a perfect fit to the intake manifold. The plates include a new gasket and will fit Chevrolet V8 engines.

5.0 out of 5 stars ( 4 )

$15.99

Pacific Performance Engineering Billet Aluminum Coolant Block-Off Plates

While the OEM coolant block-off plates use a gasket and can leak over time, PPE's billet block-off plates are thicker and use Viton® O-ring seals for maximum longevity. They are CNC-machined from billet aluminum with a leak-free design, and install using the OEM fasteners. Pacific Performance Engineering coolant block-off plates are available with a black or raw finish etched with the PPE logo. Select the one preferred for your diesel.

Not Yet Reviewed

$53.99

Racing Automotive Group Water Neck Block-Off Plates

Racing Automotive Group offers water neck block-off plates for a wide range of Chevy V8 engine applications from the 1950s and up. The 1/4 in. aluminum plates provide an excellent base to drill or weld your own fitting in place. They include a gasket two pre-drilled mounting holes to ensure a perfect fit to the intake manifold.

Not Yet Reviewed

$14.99