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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Ultra-Seal Head Gasket - 5788GOverview: Mr. Gasket Ultra Seal Head Gaskets are a five layer (graphite core perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads,
Overview:
Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn-out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads, they will not brinell (indent) aluminum cylinder heads. Suitable for high performance street, drag race and oval track use. Sold individually.
Gasket Bore 4.230 inch, Compressed thickness 0.038 inch
Features:
- Five layer (graphite core/perforated steel outer layers) composite construction
- Graphite core has excellent thermo-conductivity-transfers heat away from hot spots in head preventing gasket burn-out
- Provides excellent stability, compressibility and high temperature endurance
- Coated with high temperature silicone to ensure sealing of engine fluids
- Will not brinell (indent) aluminum cylinder heads
- For high performance street, drag race and oval track use
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1977 | Buick | Century | 350/5.7 V8 | |
| 1977 | Buick | Century | 403/6.6 V8 | |
| 1974 - 1976 | Buick | Electra | 455/7.5 V8 | |
| 1977 - 1979 | Buick | Electra | 403/6.6 V8 | |
| 1977 - 1980 | Buick | Electra | 350/5.7 V8 | |
| 1972 - 1975 | Buick | Electra | ||
| 1972 - 1976 | Buick | Estate Wagon | ||
| 1977 - 1980 | Buick | Estate Wagon | 350/5.7 V8 | |
| 1977 - 1979 | Buick | Estate Wagon | 403/6.6 V8 | |
| 1972 - 1976 | Buick | LeSabre | 455/7.5 V8 | |
| 1977 - 1980 | Buick | LeSabre | 350/5.7 V8 | |
| 1977 - 1978 | Buick | LeSabre | 403/6.6 V8 | |
| 1968 - 1980 | Oldsmobile | Cutlass | 350/5.7 V8 | |
| 1970 - 1976 | Oldsmobile | Cutlass | 455/7.5 V8 | |
| 1957 - 1966 | Oldsmobile | Starfire | ||
| 1968 - 1980 | Oldsmobile | Delta 88 | 350/5.7 V8 | |
| 1968 - 1976 | Oldsmobile | Delta 88 | 455/7.5 V8 | |
| 1957 - 1964 | Oldsmobile | Super 88 | ||
| 1966 - 1978 | Oldsmobile | Toronado | ||
| 1958 - 1966 | Oldsmobile | Dynamic 88 | ||
| 1964 - 1967 | Oldsmobile | F85 | 330/5.4 V8 | |
| 1965 - 1966 | Oldsmobile | F85 | 400/6.6 V8 | |
| 1968 - 1972 | Oldsmobile | F85 | 350/5.7 V8 | |
| 1971 - 1976 | Oldsmobile | Cutlass Supreme | 455/7.5 V8 | |
| 1968 - 1980 | Oldsmobile | Cutlass Supreme | 350/5.7 V8 | |
| 1970 - 1972 | Oldsmobile | F85 | 455/7.5 V8 | |
| 1967 | Oldsmobile | Delmont 88 | 330/5.4 V8 | |
| 1968 | Oldsmobile | Delmont 88 | 350/5.7 V8 | |
| 1965 - 1967 | Oldsmobile | Delta 88 | ||
| 1957 - 1963 | Oldsmobile | Fiesta | ||
| 1959 | Oldsmobile | Fiesta | 371/6.1 V8 | |
| 1964 - 1966 | Oldsmobile | Jetstar 88 | ||
| 1973 - 1977 | Oldsmobile | Omega | 350/5.7 V8 | |
| 1977 | Buick | Regal | 350/5.7 V8 | |
| 1977 - 1980 | Buick | Riviera | 350/5.7 V8 | |
| 1977 - 1978 | Buick | Riviera | 403/6.6 V8 | |
| 1972 - 1976 | Buick | Riviera | ||
| 1973 - 1974 | Chevrolet | Laguna | 350/5.7 V8 | |
| 1973 | Chevrolet | Malibu | 350/5.7 V8 | |
| 1958 - 1976 | Oldsmobile | 98 | ||
| 1971 - 1976 | Oldsmobile | Custom Cruiser | ||
| 1964 | Oldsmobile | Cutlass | ||
| 1965 - 1967 | Oldsmobile | Cutlass | 330/5.4 V8 | |
| 1965 - 1968 | Oldsmobile | Cutlass | 400/6.6 V8 | |
| 1972 | Pontiac | Grand Safari | 455/7.5 V8 | |
| 1977 - 1978 | Pontiac | Grand Safari | 403/6.6 V8 | |
| 1977 | Pontiac | Grand Safari | 350/5.7 V8 | |
| 1967 | Oldsmobile | Cutlass Supreme | ||
| 1964 - 1965 | Oldsmobile | Jetstar I | ||
| 1968 - 1975 | Oldsmobile | Vista Cruiser | 350/5.7 V8 | |
| 1970 - 1975 | Oldsmobile | Vista Cruiser | 455/7.5 V8 | |
| 1972 | Pontiac | Bonneville | 455/7.5 V8 | |
| 1972 | Pontiac | Catalina | 455/7.5 V8 | |
| 1972 - 1974 | Chevrolet | Nova | 350/5.7 V8 | |
| 1971 - 1973 | GMC | Sprint | 350/5.7 V8 | |
| 1971 | Jeep | Wagoneer | 350/5.7 V8 | |
| 1965 - 1971 | Oldsmobile | 442 | ||
| 1957 | Oldsmobile | 88 | ||
| 1977 | Pontiac | Ventura | 350/5.7 V8 | |
| 1972 - 1973 | Buick | Centurion | 455/7.5 V8 | |
| 1973 - 1974 | Buick | Century | 455/7.5 V8 | |
| 1973 - 1974 | Buick | Estate Wagon | 455/7.5 V8 | |
| 1972 | Buick | GS | 350/5.7 V8 | |
| 1964 - 1967 | Oldsmobile | Vista Cruiser | ||
| 1968 - 1969 | Oldsmobile | Vista Cruiser | 400/6.6 V8 | |
| 1959 | Oldsmobile | Dynamic 88 | 371/6.1 V8 | |
| 1971 - 1972 | Buick | GS 455 | ||
| 1974 | Buick | Riviera | 455/7.5 V8 | |
| 1972 - 1974 | Chevrolet | Bel Air | 350/5.7 V8 | |
| 1972 - 1974 | Chevrolet | Camaro | 350/5.7 V8 | |
| 1973 | Chevrolet | Caprice | 350/5.7 V8 | |
| 1973 | Chevrolet | Chevelle | 350/5.7 V8 | |
| 1972 | Chevrolet | Corvette | 350/5.7 V8 | |
| 1973 | Chevrolet | El Camino | 350/5.7 V8 | |
| 1972 - 1974 | Chevrolet | Impala | 350/5.7 V8 | |
| 1971 - 1972 | Chevrolet | K20 Suburban | 350/5.7 V8 | |
| 1977 | Buick | Skylark | 350/5.7 V8 | |
| 1979 | Cadillac | Eldorado | 350/5.7 V8 | |
| 1976 - 1977 | Cadillac | Seville | ||
| 1978 - 1979 | Cadillac | Seville | 350/5.7 V8 | |
| 1975 | Oldsmobile | 98 | 455/7.5 V8 | |
| 1977 - 1979 | Oldsmobile | 98 | 403/6.6 V8 | |
| 1977 - 1980 | Oldsmobile | 98 | 350/5.7 V8 | |
| 1975 | Oldsmobile | Custom Cruiser | 455/7.5 V8 | |
| 1977 - 1980 | Oldsmobile | Custom Cruiser | 350/5.7 V8 | |
| 1977 - 1979 | Oldsmobile | Custom Cruiser | 403/6.6 V8 | |
| 1977 | Oldsmobile | Cutlass | 403/6.6 V8 | |
| 1975 - 1979 | Oldsmobile | Cutlass Salon | 350/5.7 V8 | |
| 1975 - 1976 | Oldsmobile | Cutlass Salon | 455/7.5 V8 | |
| 1977 | Pontiac | Grand Prix | 350/5.7 V8 | |
| 1977 | Pontiac | Grand Prix | 403/6.6 V8 | |
| 1977 | Pontiac | LeMans | 403/6.6 V8 | |
| 1977 | Pontiac | LeMans | 350/5.7 V8 | |
| 1977 | Pontiac | Phoenix | 350/5.7 V8 | |
| 1977 | Oldsmobile | Cutlass Salon | 403/6.6 V8 | |
| 1976 | Oldsmobile | Cutlass Tiara | 350/5.7 V8 | |
| 1976 | Oldsmobile | Cutlass Tiara | 455/7.5 V8 | |
| 1979 - 1980 | Oldsmobile | Cutlass Calais | 350/5.7 V8 | |
| 1980 | Oldsmobile | Cutlass Cruiser | 350/5.7 V8 | |
| 1977 | Oldsmobile | Cutlass Supreme | 403/6.6 V8 | |
| 1977 - 1979 | Oldsmobile | Delta 88 | 403/6.6 V8 | |
| 1979 - 1980 | Oldsmobile | Toronado | 350/5.7 V8 | |
| 1977 - 1979 | Pontiac | Bonneville | 403/6.6 V8 | |
| 1977 - 1980 | Pontiac | Bonneville | 350/5.7 V8 | |
| 1977 - 1980 | Pontiac | Catalina | 350/5.7 V8 | |
| 1977 - 1979 | Pontiac | Catalina | 403/6.6 V8 | |
| 1959 | Oldsmobile | Super 88 | 371/6.1 V8 | |
| 1977 - 1979 | Pontiac | Firebird | 403/6.6 V8 | |
| 1977 | Pontiac | Firebird | 350/5.7 V8 | |
| 1977 | Pontiac | Grand LeMans | 350/5.7 V8 | |
| 1977 | Pontiac | Grand LeMans | 403/6.6 V8 | |
| 1959 | Oldsmobile | 98 | 371/6.1 V8 | |
| 1967 | Oldsmobile | Delmont 88 | 425/7 V8 |
Specs:
| Application | Oldsmobile |
|---|---|
| Brand | Mr. Gasket |
| Compressed Thickness | .038 inch |
| Compression Ratio | Up to 14:1 |
| Emission Code | 5 |
| Engine | Oldsmobile V8 |
| Gasket Bore | 4.230 inch |
| Gasket Line | Ultra-Seal |
| Material | Graphite Steel |
| Packaging | Retail |
| Product Type | Head Gasket |
| Quantity Per Pkg. | 1 |
| Warranty | Limited 90 Day |
| Weight | 0.5 |
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
4.7 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 1
Muy grande
No le cae
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
★★★★★ 5
Fresh, Clean Air — Excellent Quality Cabin Filter!
Size: 9.7" x 9.3" x 1.8"
This premium HEPA‑rated filter does an outstanding job of keeping dust, pollen, and tiny airborne particles out of the cabin — much better than standard cabin filters. It’s designed and tested to meet true HEPA filtration standards, effectively capturing up to 99.97 % of particles down to 0.3 microns in size, so the air inside the car feels noticeably cleaner and fresher.
Installation was straightforward and fit exactly in place in my vehicle with no modifications needed. The high‑quality filter media feels dense and well‑constructed, with built‑in structural support to help it hold its shape throughout its service life.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Must Buy HEPA Cabin Filter
Size: 9.7" x 9.3" x 1.8"
Great filter and excellent Value! And, it’s a Bosch !!! Description and sizing were exactly as advertised. DIY install was easy and it fit my 2019 Highlander perfectly ! Filter is HEPA and well made and is a good thickness, so much better than the flimsy one the car dealership installed. Impressive ! Highly recommend!
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Reviewed in the United States on March 7, 2026
★★★★★ 5
good performance
Size: 9.7" x 9.3" x 1.8"
The installation is simple, the size is just right, and most importantly, the price is very good. It is the best choice for consumables.
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Reviewed in the United States on March 2, 2026
★★★★★ 5
A Lungful of Freedom
Size: 9.7" x 9.3" x 1.8"
Dateline: The Passenger-Side Footwell of a Toyota Venza, Sunday Night. We spend our lives in sealed metal boxes, hurtling through a thick, invisible soup of our own collective filth. A foul cocktail of exhaust fumes, road dust, tire particles, and whatever strange, pollen-based miasma the world decides to throw at us on any given day. To breathe that poison in, unfiltered, is an act of slow, unwitting suicide. You need a line of defense. A gatekeeper for your own lungs.
Enter the Bosch 6055C HEPA Cabin Air Filter. It is not a glamorous part. It is not a performance upgrade that adds horsepower or prestige. It is a simple, pleated rectangle of paper and charcoal, a humble guardian destined to live out its days in a dark plastic cave behind your glovebox. But its mission is a noble one.
The replacement process is a moment of pure, unadulterated, five-minute victory over the dealership's service department. You pop open the glovebox, you unclip the old filter tray, and you pull out the old soldier. And what you find is a horror show. A grey, matted testament to the unseen war it has been fighting on your behalf, choked with leaves, dirt, and the ghosts of a thousand diesel trucks. It is the face of the enemy.
You unwrap the new Bosch filter. It feels solid, well-made. The pleats are clean and numerous. I laid it side-by-side with the outgoing Denso filter—a brand that supplies the automakers themselves—and I could find no meaningful difference. The quality was equal. The construction, robust. This was no flimsy, cut-rate pretender. This was a serious piece of hardware from a serious company.
You slide the clean, white Bosch into the tray, snap it back into its dark little home, and close the glovebox. The deed is done. You have performed a life-saving transplant on your vehicle's respiratory system in less time than it takes to listen to a single pop song.
And the value… the value is the sweet, sweet punchline. For a fraction of what a dealership would charge you for the same simple service, you have installed a top-tier, HEPA-grade filter from one of the most respected names in the business. You have guaranteed yourself a clean, breathable bubble of personal space as you navigate the toxic jungle of the modern roadway.
This is not just a filter; it's a small, affordable act of rebellion. It’s a declaration that you, and you alone, are the master of the air you breathe. It is a simple, effective, and profoundly satisfying piece of gear. Highly recommended.
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Reviewed in the United States on June 9, 2025