1990 GMC Engine Gaskets & Seals Gaskets & Seals

Fel-Pro Head Gaskets

OEM replacement Fel-Pro head gaskets are ideal for stock rebuilds on street-driven cars and trucks. These seals are available in a dozen materials, with different bores, thicknesses, and compressed volumes. They're designed for precise fitment on specific engine applications. (Fel-Pro head gaskets are not intended for racing use.)

4.79 out of 5 stars ( 259 )

$16.99

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$46.99

Fel-Pro Engine Gasket Kits

Fel-Pro engine gasket kits include the seals needed for a complete rebuild, all in one convenient and affordable package. Each kit features the premium-quality gaskets required for your specific engine—from head, intake, and exhaust gaskets … to valve cover, fuel and water pump gaskets, and many more. These sets are available for thousands of vehicle applications. Match your year/make/model to the Fel-Pro engine gasket kit designed for precise fitment.

4.64 out of 5 stars ( 570 )

$90.99

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$162.99

Fel-Pro Timing Cover Gaskets

The chain of command between a crankshaft, camshaft, and engine valves is central to your vehicle's basic movement—which is why it's so important to protect the timing belt. Fel-Pro timing cover gaskets provide a tight seal to keep contaminants out of the gear shaft area. They're offered in hundreds of single or multi-piece sets for OE-style fitment on a wide variety of cars, trucks, vans, and SUVs; gaskets for industrial use are also available. Ideal for stock replacement (not intended for racing applications), Fel-Pro gaskets are made from materials such as fiber, cork, and rubber. Choose the kit which corresponds to your year/make and engine application.

4.76 out of 5 stars ( 554 )

$4.99

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$26.99

Fel-Pro Water Neck Gaskets

Fel-Pro water neck gaskets are available for hundreds of applications, including most engine coolant outlets and thermostat housings. These inexpensive seals are offered in a variety of materials and configurations. Avoid unwanted leaks. Order the gaskets recommended for your vehicle and engine family.

4.71 out of 5 stars ( 277 )

$2.99

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$13.99

Fel-Pro Intake Manifold Gaskets

Fel-Pro intake manifold gaskets are designed as stock-style intake gaskets, and many also feature their Printoseal technology (application dependent). This makes them ideal for repairs and rebuilds, as well as mild performance engines. These seals are available in a variety of configurations for fitment on hundreds of engine applications. Hit the road with the Fel-Pro intake manifold gaskets best suited for your application.

4.76 out of 5 stars ( 505 )

$11.99

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$25.99

Fel-Pro Water Pump Gaskets

Fel-Pro water pump gaskets are offered in a variety of materials and configurations. These replacements are available for thousands of applications. Order the model or set recommended for fitment with your vehicle and engine family.

4.74 out of 5 stars ( 162 )

$2.99

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$9.99

Chevrolet Performance One-Piece Oil Pan Gaskets

Chevrolet Performance one-piece oil pan gaskets can eliminate troublesome leaks and keep your performance engine properly sealed. Made from neoprene polymers, the one-piece gaskets replace 4-piece factory designs for a more effective seal. Order the model recommended for your engine application.

5.0 out of 5 stars ( 10 )

$87.99

Fel-Pro Fuel Pump Gaskets

Fel-Pro offers fuel pump gaskets for thousands of applications. These economical replacements are available in a variety shapes and materials. Order the model recommended for your vehicle and engine family.

4.89 out of 5 stars ( 95 )

$2.99

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$3.99

Fel-Pro PermaDry Valve Cover Gaskets

Fel-Pro PermaDry valve cover gaskets are recommended for stock replacement use. Their shape, thickness, and construction varies with each engine application. In addition to tried-and-true materials such as cork and rubber, advances in gasket technology have also been incorporated into molded silicone seals for leak-free performance. Simply match up your vehicle's make and model year with the Fel-Pro PermaDry valve cover gaskets designed for precise fitment. Note that these gaskets are not intended for race applications.

4.59 out of 5 stars ( 389 )

$10.99

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$54.99

Summit Racing™ Rear Main Seal Housings

These Summit Racing™ rear main seal housings are the correct aluminum housing for Chevrolet 1-piece rear main seals. Whether you're replacing a damaged housing or building a project from scratch, these high quality housings will assure an easy installation.

Not Yet Reviewed

$79.99

SCE Pro Copper Head Gaskets

Not all solid copper gaskets are created equal. SCE uses premium 99 percent pure copper sheets that are precisely rolled to our specifications and tested for uniform flatness to assure precise cylinder head-to-block alignment and eliminate uneven loading. After processing, each gasket is annealed to ensure optimum mating and provide measurable gains in cylinder sealing, as evidenced by lower leak-down percentages. O-ringing is recommended. Pro Copper gaskets are available in many bore and thickness combinations to suit your performance needs.

4.0 out of 5 stars ( 19 )

$75.95

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$137.70

Fel-Pro Valve Stem Seals

Fel-Pro valve stem seals are available in a variety of sizes, styles, and materials. These small components perform a valuable role—controlling the lubrication of the valve stems as they slide in the valve guide. Too little oil causes stem and guide wear; too much increases oil consumption and can cause a buildup of carbon. This can lead to valve seat damage and early valve grind. Order the replacement set recommended for your vehicle and engine application.

4.49 out of 5 stars ( 112 )

$13.99

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$33.99

ACDelco Rear Main Seal Housings

ACDelco offers rear main seal housings for a wide range of year/make and engine applications. The one-piece aluminum replacements are designed, engineered, tested, and backed by General Motors. They are validated OE parts for specific Chevrolet, Buick, GMC, and Cadillac vehicles. These components are designed to give the engine oil leak protection from between the crankshaft output flange and the engine block. Order the engine crankshaft seal housing recommended for your ride.

4.2 out of 5 stars ( 10 )

$136.99

Fel-Pro Rear Main Seals

Fel-Pro rear main seals are ideal for stock rebuilds or street driven cars and trucks. These OEM-style replacement seals are not intended for race applications. They're available in a variety of materials and configurations for fitment on specific vehicles and engine families.

4.7 out of 5 stars ( 170 )

$17.99

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$30.99

SCE Titan Copper Head Gaskets

With their built-in oil and coolant seals, patented SCE Titan copper self-sealing head gaskets require no additional sealants. That means you get user-friendly installation, combined with reliable fluid sealing, plus the unbeatable strength of solid copper gaskets. The fluid seals are bonded to both sides of the gaskets and cleverly offset to allow the annealed copper of the gaskets to deform around them for a better seal, especially in the O-ring combustion-seal area. Recommended for liquid-cooled racing engines with O-rings in the heads or block, these one-of-a-kind copper head gaskets can even be used on street machines with no worries about coolant leaks! For perfect sealing strength every time, introduce your engine to SCE Titan copper head gaskets.

4.83 out of 5 stars ( 6 )

$100.06

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$157.65

PRW Valve Cover Gaskets

Create a positive seal with PRW valve cover gaskets. Several choices are available in black or blue rubber with a steel core. Choose the proper fit for your valve cover/engine setup.

4.5 out of 5 stars ( 2 )

$38.31

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$41.24

Cometic Valve Cover Gaskets

Cometic valve cover gaskets are made from aramid fiber. This is a premium high-temperature, high-density, creep-resistant material that is fuel-resistant and asbestos-free. These gaskets require no retorquing or additional sealant. If you want a dependable seal, go with Cometic Gasket valve cover gaskets.

4.28 out of 5 stars ( 78 )

$23.38

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$44.40

On Sale

Mr. Gasket Standard Intake Gasket Sets

Mr. Gasket standard intake gasket sets are manufactured from a blend of nitrile rubber and fiber, for excellent sealing and durability. They're precision die-cut for each specific application to ensure a great fit, and can be custom-trimmed for modified ports where needed. The sets come complete with all necessary seals and block-off plates.

4.02 out of 5 stars ( 64 )

$48.59

$27.47

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$49.95

SCE AccuSeal Pro Oil Pan Gaskets

SCE offers AccuSeal Pro oil pan gaskets for a wide range of vehicles from the 1950s and up. They are available in one or two-piece designs and are made with proprietary processes and materials like steel core laminate, rubber, silicone, PTFE coated, aluminum, and elastomer. The replacement gaskets are engineered to resist heat and seal surface irregularities. Plus, they have built-in crush limiters to prevent damage from over-tightening. For street or strip, order the AccuSeal Pro oil pan gasket recommended for your application.

3.58 out of 5 stars ( 12 )

$31.50

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$546.20

SCE ICS Titan Copper Head Gaskets

With their built-in integral combustion and coolant seals, patented SCE ICS Titan copper self-sealing head gaskets require no additional sealants. That means that you get user-friendly installation, combined with reliable fluid sealing, plus the unbeatable strength of solid copper gaskets. The fluid seals are bonded to both sides of the gaskets and cleverly offset to allow the annealed copper of the gaskets to deform around them for a better seal and to prevent blowout. The built-in combustion seals, found only on the ICS Titan gaskets, take the place of the O-ringed blocks or heads, allowing for the use of power adders or extreme static compression ratios. The gasket body is split at the bore opening to allow for the insertion of a stainless wire O-ring, forming a primary seal, with upper and lower flanges forming a secondary combustion pressure seal. Recommended for naturally aspirated gas or methanol racing engines, these one-of-a-kind copper ICS Titan head gaskets are suitable for medium-to-heavy turbocharged, blown, or nitrous-injected engines as well. For ultimate sealing strength every time, introduce your engine to SCE ICS Titan copper head gaskets.

4.33 out of 5 stars ( 9 )

$138.52

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$229.85

Fel-Pro Distributor Base Gaskets

Fel-Pro offers distributor base gaskets for thousands of applications. They're available in a variety of materials to complement cast iron and aluminum intake manifolds. The gaskets can be used in conjunction with any shins or housing base spacers made to correct the distributor's overall height. Order the replacement model recommended for your vehicle and engine family.

4.93 out of 5 stars ( 42 )

$2.99

Mr. Gasket Ultra-Seal Valve Cover Gaskets

Mr. Gasket Ultra-Seal valve cover gaskets may be the most advanced, highly tested, and real-world proven gaskets on the market today. They're made from high-density gasket material. This construction means that they are non-shrink and non-stick, don't have to be re-torqued, and can be reused. Their extra thickness also adds a little clearance between the valvetrain and the valve cover.

4.71 out of 5 stars ( 153 )

$42.68

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$51.19

SCE AccuSeal Pro Rear Main Seals

SCE AccuSeal Pro rear main seals are made from top-quality Viton® material known for its excellent heat and chemical resistance. These one- or two-piece replacements are available for a wide range of vehicles from the 1950s and up. Count on SCE AccuSeal Pro rear main seals for dependable, leak-free performance!

4.36 out of 5 stars ( 11 )

$30.35

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$336.25

Mr. Gasket Valve Cover Gaskets

Mr. Gasket valve cover gaskets are ideal for stock replacement use. They're made from a variety of materials for excellent durability and to seal well in mild performance applications. Most of the gaskets are non-shrink and non-stick, so they can be reused many times. An extra-thick version is also available to provide a bit more clearance between the valve covers and the valvetrain. Note that these gaskets are not intended for race applications. Order the model designed to fit your vehicle and engine application.

4.78 out of 5 stars ( 23 )

$32.27

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$51.19