Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Ultra-Seal Valve Cover Gaskets - 5867Overview: 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. They fit both 1987-2002 Gen I Chevrolet Small Blocks as well as 1992-1997 Gen II LT-Based Small Blocks.
Features:
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1988 - 1995 | GMC | K2500 | 350/5.7 V8 | |
| 1988 - 1995 | GMC | K2500 | 305/5 V8 | |
| 1992 - 1995 | GMC | K2500 Suburban | 350/5.7 V8 | |
| 1988 - 1995 | GMC | K3500 | 350/5.7 V8 | |
| 1987 | GMC | R1500 | 350/5.7 V8 | |
| 1987 - 1991 | GMC | R1500 Suburban | 350/5.7 V8 | |
| 1987 | GMC | R1500 | 305/5 V8 | |
| 1987 | GMC | R1500 Suburban | 305/5 V8 | |
| 1987 - 1989 | GMC | R2500 | 350/5.7 V8 | |
| 1987 | GMC | R2500 | 305/5 V8 | |
| 1987 - 1991 | GMC | R2500 Suburban | 350/5.7 V8 | |
| 1987 - 1991 | GMC | R3500 | 350/5.7 V8 | |
| 1987 - 1991 | GMC | V1500 Suburban | 350/5.7 V8 | |
| 1987 | GMC | V1500 | 350/5.7 V8 | |
| 1987 | GMC | V1500 | 305/5 V8 | |
| 1987 | GMC | V2500 | 350/5.7 V8 | |
| 1987 - 1991 | GMC | V2500 Suburban | 350/5.7 V8 | |
| 1987 - 1991 | GMC | V3500 | 350/5.7 V8 | |
| 1992 - 1993 | GMC | Yukon | ||
| 1994 - 1995 | GMC | Yukon | 350/5.7 V8 | |
| 1987 | Pontiac | Firebird | 305/5 V8 | |
| 1987 - 1991 | Pontiac | Firebird | 350/5.7 V8 | |
| 1987 | Pontiac | Grand Prix | 305/5 V8 | |
| 1987 - 1995 | Chevrolet | G20 | 305/5 V8 | |
| 1987 - 1995 | Chevrolet | G20 | 350/5.7 V8 | |
| 1987 - 1996 | Chevrolet | G30 | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | K1500 | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | K1500 | 350/5.7 V8 | |
| 1987 - 1995 | GMC | G2500 | 305/5 V8 | |
| 1987 - 1995 | GMC | G2500 | 350/5.7 V8 | |
| 1987 - 1996 | GMC | G3500 | 350/5.7 V8 | |
| 1987 - 1991 | GMC | Jimmy | 350/5.7 V8 | |
| 1987 | GMC | Jimmy | 305/5 V8 | |
| 1988 - 1995 | GMC | K1500 | 350/5.7 V8 | |
| 1988 - 1995 | GMC | K1500 | 305/5 V8 | |
| 1995 | GMC | K1500 Suburban | 350/5.7 V8 | |
| 1992 - 1994 | GMC | K1500 Suburban | ||
| 1987 - 1994 | Chevrolet | Blazer | 350/5.7 V8 | |
| 1992 - 1993 | Chevrolet | Blazer | ||
| 1987 | Chevrolet | Blazer | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | C1500 | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | C1500 | 305/5 V8 | |
| 1992 - 1993 | Chevrolet | C1500 Suburban | ||
| 1994 - 1995 | Chevrolet | C1500 Suburban | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | C2500 | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | C2500 | 350/5.7 V8 | |
| 1992 - 1995 | Chevrolet | C2500 Suburban | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | C3500 | 350/5.7 V8 | |
| 1987 - 1992 | Chevrolet | Camaro | 350/5.7 V8 | |
| 1987 - 1992 | Chevrolet | Camaro | 305/5 V8 | |
| 1987 - 1993 | Chevrolet | Caprice | 350/5.7 V8 | |
| 1991 | Chevrolet | Caprice | ||
| 1987 - 1993 | Chevrolet | Caprice | 305/5 V8 | |
| 1987 - 1989 | Chevrolet | Corvette | ||
| 1990 - 1991 | Chevrolet | Corvette | 350/5.7 V8 | |
| 1987 | Chevrolet | El Camino | 305/5 V8 | |
| 1987 - 1993 | Chevrolet | G10 | 350/5.7 V8 | |
| 1987 - 1995 | Chevrolet | G10 | 305/5 V8 | |
| 1992 - 1993 | Chevrolet | K1500 Suburban | ||
| 1994 - 1995 | Chevrolet | K1500 Suburban | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | K2500 | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | K2500 | 305/5 V8 | |
| 1992 - 1995 | Chevrolet | K2500 Suburban | 350/5.7 V8 | |
| 1988 - 1995 | Chevrolet | K3500 | 350/5.7 V8 | |
| 1987 - 1988 | Chevrolet | Monte Carlo | 305/5 V8 | |
| 1987 | Chevrolet | R10 | 350/5.7 V8 | |
| 1987 | Chevrolet | R10 | 305/5 V8 | |
| 1987 | Chevrolet | R10 Suburban | 305/5 V8 | |
| 1987 - 1988 | Chevrolet | R10 Suburban | 350/5.7 V8 | |
| 1989 - 1991 | Chevrolet | R1500 Suburban | 350/5.7 V8 | |
| 1987 - 1988 | Chevrolet | R20 | 350/5.7 V8 | |
| 1987 - 1988 | Chevrolet | R20 | 305/5 V8 | |
| 1987 - 1988 | Chevrolet | R20 Suburban | 350/5.7 V8 | |
| 1989 | Chevrolet | R2500 | 350/5.7 V8 | |
| 1989 - 1991 | Chevrolet | R2500 Suburban | 350/5.7 V8 | |
| 1987 - 1988 | Chevrolet | R30 | 350/5.7 V8 | |
| 1989 - 1991 | Chevrolet | R3500 | 350/5.7 V8 | |
| 1995 | Chevrolet | Tahoe | 350/5.7 V8 | |
| 1987 | Chevrolet | V10 | 350/5.7 V8 | |
| 1987 | Chevrolet | V10 | 305/5 V8 | |
| 1987 - 1988 | Chevrolet | V10 Suburban | 350/5.7 V8 | |
| 1989 - 1991 | Chevrolet | V1500 Suburban | 350/5.7 V8 | |
| 1987 | Chevrolet | V20 | 350/5.7 V8 | |
| 1987 - 1988 | Chevrolet | V20 Suburban | 350/5.7 V8 | |
| 1989 - 1991 | Chevrolet | V2500 Suburban | 350/5.7 V8 | |
| 1987 - 1988 | Chevrolet | V30 | 350/5.7 V8 | |
| 1989 - 1991 | Chevrolet | V3500 | 350/5.7 V8 | |
| 1988 - 1995 | GMC | C1500 | 305/5 V8 | |
| 1988 - 1995 | GMC | C1500 | 350/5.7 V8 | |
| 1995 | GMC | C1500 Suburban | 350/5.7 V8 | |
| 1992 - 1994 | GMC | C1500 Suburban | ||
| 1988 - 1995 | GMC | C2500 | 350/5.7 V8 | |
| 1988 - 1995 | GMC | C2500 | 305/5 V8 | |
| 1992 | GMC | C2500 Suburban | ||
| 1993 - 1995 | GMC | C2500 Suburban | 350/5.7 V8 | |
| 1988 - 1995 | GMC | C3500 | 350/5.7 V8 | |
| 1987 | GMC | Caballero | 305/5 V8 | |
| 1987 - 1995 | GMC | G1500 | 305/5 V8 | |
| 1987 - 1993 | GMC | G1500 | 350/5.7 V8 |
Specs:
| Application | Small Block Chevy |
|---|---|
| Bolt Pattern | Center |
| Brand | Mr. Gasket |
| Emission Code | 5 |
| Engine | Chevrolet Small Block Gen II (LT Based) |
| 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 | 0.44 |
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
4.1 ★★★★★
Based on 2231 reviews
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Product Reviews
★★★★★ 5
Best Boxer Briefs for Women!
Color: 09-multicolour (4-pack), Size: Large
I rarely give 5⭐️’s but these deserve it! Hands down, the most comfortable material, stitching, waistband, moisture wicking and overall comfort. They sit right beneath my bellybutton, they wash and dry well and they’re sturdy. I have tried 3 styles and these are the best.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
★★★★★ 5
Super comfortable! Great for layering under loose, cheeky shorts. Colors amazing!
Color: Multicolor B (5-pack), Size: Small
I specifically got these to wear under some loose shorts I got from Amazon (5 Pack Modal Lounge Shorts) so my cheeks don't show when bending over, and the pop of color looks amazing anyway! I have a 27" waist and 37.25" hips, and size Small works perfect for me. I love how these shorts have a classic underwear lining that a pad would sit perfectly on, whereas the longer boxer style ones of this same brand do not have that classic panty liner style crotch. The material is uniquely thick, stretchy, and thin/breezy all at once! To be honest, I am not opposed to wearing these straight up as shorts to work out it. They look like cute booty shorts and no one would know they're technically underwear. Plus when you buy a 5 pack like this, you're getting an amazing price whereas most athletic shorts are priced at $20 per pair or more, and they're not made with ANY natural materials like these BambooCool shorts are. I like them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 5
Best Sleep Shorts EVER ♥️
Color: Multicolor a (5-pack), Size: Medium
Love, love, LOVE these bamboo BoyShorts! I wear them for sleeping because they’re incredibly light, soft and comfortable while still having a great liner. They fit to my body while not feeling tight, snug or restrictive. Soooo comfortable. I’m 5’8” 145 lbs and went with Medium. ♥️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Amazing fit!!!
Color: Multicolor a (5-pack), Size: Large
These are quite literally the best underwear I have ever worn. I am going to replace all of my underwear with just these. I got the shorter boy shorts cut and they are amazing. These let my body be the shape that my body is, no squeezing or tight waist band. I feel so normal and comfortable in them, they’re breathable and soft!! I absolutely love them after so much trial and error with underwear I finally found the ones!
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Highly recommend during pregnancy and to wear around the house!
Color: Multicolor a (5-pack), Size: X-Large
Love!! I’m currently 33 weeks pregnant. I’m 5’6” and pre pregnancy weight I would fluctuate between 132-140 lbs easily. I now weigh 162 lbs and my hip is now measuring 40 inches.
I bought the XL in the dark grey/black so that it wouldn’t be tight at all around my belly and I absolutely love them! Stretchy, comfortable, breathable. They aren’t loose around my thighs and I can tell they are gonna be nice to wear during post partum. I wear them around the house with an open robe and a bralette for the ultimate comfort.
If I were to buy them before pregnancy, I’m positive that a large would have fit beautifully, even though the small/medium measurements on the size chart would have been my pre pregnancy weight, I know they would have been too tight. I detest tight underwear!
Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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