Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Round Ports, 2.40 Inch Mr Gasket

Name: Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Round Ports, 2.40 Inch Mr Gasket
Brand: Mr. Gasket
SKU: M00S 5914
Price: 47.00 USD
Availability: InStock

$50.84 $47.00 Save $3.84

SKU: M00S 5914

In Stock

Ships by Jul 29

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Beginner — under 30 min

Description

The Mr. Gasket 5914 is an exhaust header gasket designed to improve the sealing of exhaust header flanges. It features an Ultra-Seal construction with a steel core laminate. The gasket has a 2.40-inch round port shape and is specifically made for Big Block Chevy engine families. It is sold in pairs.

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

Brand	Mr. Gasket
Part Number	M00S 5914

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.

View Full Return Policy