5912 Mr. Gasket Ultra-Seal Header Gaskets

Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Round Ports, 2.15 Inch;

Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.;

General Policies

Payment Method

We gladly accept PayPal and All Major Credit Cards.

Warranty & Return Policy

Holley Performance Products warrants new products to be free from defects in material and workmanship for a period of 90 days from date of purchase.

Holley Performance Products Limited Warranty specifically does not apply to products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog.

Buyer pays return shipping

Shipping & Tracking

Please see the “Shipping and Payment” tab
We ship all US orders via United Parcel Service (UPS Ground)
A signature is required on all UPS orders over $750
Tracking information will be sent via email after your package ships (you must supply a valid email address during checkout)
We ship within 1 business day upon receipt of payment
We do not ship to APO/FPO or US Post Office Box addresses
We ship internationally thru United States Postal Service (USPS) Express Mail International; allow extra time for international shipments
We can not ship as a "GIFT" or ship anything internationally with changes to the invoice

Customer Service & Feedback

We strive to answer questions submitted thru eBay’s message system within 1 business day
If you have a technical question about your purchase, please call our Tech Services department at (866) 464-6553 between 8:00 am – 6:00 pm M-F and Saturdays 9:00 am to 3:00 pm.
We want you to be completely satisfied with your purchase – please let us know if you have any problems with your purchase before leaving feedback so we have a chance to make it right – we want your repeat business!

Check out the official Holley Performance eBay Store for more great deals!!!