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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Ultra-Seal Valve Cover Gaskets - 5875Overview: 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,
Overview:
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.
Features:
Application:
| 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 |
Specs:
| 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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1583 reviews
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Product Reviews
★★★★★ 5
Versatile, comfortable and a delight to wear
Size: 10.5 Wide, Color: Army Green
Had never heard of this brand but needed a pair of waterproof boots for a trip to the PNW where we would hike in mountains, rainforest and beaches. I have a pair of Merrell Moab hiking shoes, but wanted something that covered more and were waterproof. These boots are amazing. They are one of the most comfortable shoes I own. I wore them everywhere and found I preferred them over other shoes throughout the trip. They stayed comfortable and dry no matter where we went, rivers, lakes or the ocean.
I’ve now worn them on several trips including a March trip to Bryce Canyon where we went from snow on some trails to the heat of the red rocks in others. I love these boots more every time I wear them.
I am a huge fan now. At the price they are a nobrainer. I would buy these Nortiv8 boots over and over again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 4
Good value for a $55 boot.
Size: 12, Color: Army Green
I like these boots because I have a wide foot and even though I bought the 12 and NOT the 12W there is plenty of width. Very comfortable boot. I have put this pair through about 1000 miles mostly on asphalt, ice and snow. Very little actual dirt/ rocky trails. I bought them for the waterproofness and ankle support. Now the soles are getting thin and I can feel small rocks through the soles. Plus the soles are beginning to separate from the uppers and they are no longer waterproof. Not bad for 1000 miles. Still, I feel For a $55 boot they are a good value. I am 6ft and weigh 250.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Very comfortable
Size: 11, Color: Army Green
Great boots , comfort, fits great!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Worth Every Penny!
Size: 9, Color: Coyote
I absolutely love these boots! They are super light, comfortable and definitely waterproof. I took them on a camping trip for the weekend and I walked through creeks and puddles with no issues at all. No water got inside and they were comfortable all weekend. The only thing was the tongue did start to bother me a bit after the 3rd day. I have some pretty boney shins but a small cloth between my shins and the tongue helped a lot.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Good
Size: 12 Wide, Color: Black
Easy to walk in good quality, lightweight lace quality is good very comfortable and no resist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
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