Skip to product information
1 of 1

Mr. Gasket Ultra-Seal Valve Cover Gaskets - 5875

Mr. Gasket Ultra-Seal Valve Cover Gaskets - 5875

SKU: 5875
Regular price $36.96 USD
Regular price Sale price $36.96 USD
Sale Sold out


Ultra-Seal is Mr. Gasket premium valve cover gasket material. It's manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187 inch thick.


    Year Make Model Submodel Engine Size
    1965 - 1976 Oldsmobile 98
    1975 Oldsmobile 98 455/7.5 V8
    1971 - 1976 Oldsmobile Custom Cruiser
    1975 Oldsmobile Custom Cruiser 455/7.5 V8
    1968 - 1976 Oldsmobile Cutlass 350/5.7 V8
    1970 - 1976 Oldsmobile Cutlass 455/7.5 V8
    1975 - 1976 Oldsmobile Cutlass Salon 455/7.5 V8
    1976 Oldsmobile Cutlass Tiara 350/5.7 V8
    1975 - 1976 Oldsmobile Cutlass Salon 350/5.7 V8
    1976 Oldsmobile Cutlass Tiara 455/7.5 V8
    1975 - 1976 Oldsmobile Cutlass Supreme 350/5.7 V8
    1975 - 1976 Oldsmobile Cutlass Supreme 455/7.5 V8
    1975 Oldsmobile Delta 88 455/7.5 V8
    1965 - 1976 Oldsmobile Delta 88
    1975 Oldsmobile Delta 88 350/5.7 V8
    1966 - 1976 Oldsmobile Toronado
    1964 - 1975 Oldsmobile Vista Cruiser
    1965 - 1971 Oldsmobile 442
    1964 - 1974 Oldsmobile Cutlass
    1967 Oldsmobile Cutlass 330/5.4 V8
    1967 Oldsmobile Delmont 88
    1968 Oldsmobile Delmont 88 350/5.7 V8
    1965 - 1966 Oldsmobile Dynamic 88
    1964 - 1967 Oldsmobile F85 330/5.4 V8
    1965 - 1966 Oldsmobile F85 400/6.6 V8
    1968 - 1971 Oldsmobile F85 350/5.7 V8
    1971 - 1974 Oldsmobile Cutlass Supreme
    1964 - 1966 Oldsmobile Jetstar 88
    1973 - 1974 Oldsmobile Omega 350/5.7 V8
    1970 Oldsmobile F85 455/7.5 V8
    1972 Oldsmobile F85
    1968 - 1969 Oldsmobile Vista Cruiser 350/5.7 V8
    1965 Oldsmobile Jetstar I
    1965 - 1966 Oldsmobile Starfire

    Application Oldsmobile V8
    Brand Mr. Gasket
    Emission Code 5
    Engine Oldsmobile V8
    Packaging Retail - Skin Pack
    Product Type Valve Cover Gaskets
    Valve Cover Gasket Material Ultra Seal
    Valve Cover Gasket Thickness .187"
    Warranty Limited 90 Day
    Weight 0.31
    View full details

    Policies and FAQs

    Return Policy

    We offer 30 days return of 100% purchase price for defective items. Return shipping and handling charges are the customers responsibility unless it is our mistake. (If shipping was included it will be deducted from the return)  If the part is wrong or defective please advise us if you would like an exchange, replacement or refund. We suggest our buyers keep tracking number delivery confirmation, and pack item securely to protect the return. If the part is lost we are unable to offer a refund. The part(s) must be returned in its original condition. Returns over 30 days may be accepted at a discounted price & offered store credit. Our return address is 774 Broad St Wadsworth, Oh 44281.


    This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.

    Our kits include all of the solid metal lines for that section of the vehicle.

    We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.

    • Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
    • If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.

    Yes but you will need to order in advance. All of our items are not stocked at our location. So please place your order online and we will notify you when it is ready for pick up.

    Unfortunately we cannot offer single lines outside of kits

    Yes, all are covered by the manufacturer's standard warranty. Most warranties cover the cost of parts. Any installation or other fees are non-refundable.

    Online we accept PayPal and all major Credit Cards. If your are picking an item up we gladly accept cash.

    We can only ship to your confirmed address in PayPal or your billing address if you pay with a credit card.

    Orders typically Arrive within 3 to 10 days depending if it is a stocked item or something we have manufactured at time of sale.

    Yes please send us a message through our custom orders page.

    Yes, but items sent out of the continental U.S. may incur additional charges based on their destination

    The left and right sides on a vehicle are determined as though you were sitting in the driver's seat. The left is the driver's side, and the right is the passenger's side.

    Check it again tomorrow. It takes up to 1 day for the carrier to give status and a delivery date. UPS and FedEx provide delivery dates, USPS usually does not but they take no longer than 5 business days.

    Yes! Thank you for your military service!

    Still have a question or concern?  Please contact use our contact us form!

    Yes! Thank you for your military service!

    Warranty Information

    Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.

    Product Notices

    *NOTE: Product images may not reflect actual product appeareance.