My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE
Categories
  • Tire and Wheel
  • RV & Marine
  • Suspension
  • Tools and Equipment
  • Body
  • Transmission
  • Brake
  • Accessories and Fluids
  • Engine
  • Electrical, Charging and Starting
  • Driveline and Axles
  • Belts and Cooling
  • Home Improvement
  • Air and Fuel Delivery
  • HVAC
  • Electrical, Lighting and Body
  • Exhaust
  • Steering
  • Powersports & Motorcycle
  • Ignition
  • Emission Control
  • Entertainment and Telematics
  • Wiper and Washer
  • Hardware and Service Supplies
  • Transfer Case
  • Multifunction Terms
  • Lawn & Garden
Manufacturers
View all
Want to receive promotions and offers?

GMC Sierra Engine Gaskets and Seals

Engine gaskets and seals are among the foundational components that keep a GMC Sierra's engine assembly properly contained, covering model years 2002 through 2025. The range here includes cylinder head gaskets, oil drain plug gaskets, manifold gaskets, and more — in OE replacement and performance-oriented options. Select your year above and we'll show only the engine gaskets and seals that fit your GMC Sierra. Fitment is checked against our vehicle data for every part listed.

1 - 30 of 129 results

Best Seller Free Shipping
Picture of Cometic MLS Cylinder Head Gasket Bore Honda

Cometic MLS Cylinder Head Gasket Bore Honda

38 reviews
Vehicle Specific
from $21
In Stock (10+)
Picture for manufacturer Cometic
View Options
Best Seller Free Shipping
Picture of Cometic MLS Cylinder Head Gasket GM Gen III/IV Bore

Cometic MLS Cylinder Head Gasket GM Gen III/IV Bore

45 reviews
Vehicle Specific
from $78
In Stock (10+)
Picture for manufacturer Cometic
View Options
Best Seller Free Shipping
Picture of Earl's Performance Oil Filter Bypass Adapters

Earl's Performance Oil Filter Bypass Adapters

32 reviews
Vehicle Specific
from $88
In Stock (10+)
Picture for manufacturer Earl's Performance
View Options
Free Shipping
Picture of Cometic C5317-051 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.130

Cometic C5317-051 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.130

75 reviews
Part: C5317-051
Vehicle Specific
$94.46
3 left at this price
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5489-060 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.100

Cometic C5489-060 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.100

14 reviews
Part: C5489-060
Vehicle Specific
$120.73
4 left at this price
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic Intake Manifold Gasket Nissan

Cometic Intake Manifold Gasket Nissan

68 reviews
Vehicle Specific
from $6
In Stock (10+)
Picture for manufacturer Cometic
View Options
Free Shipping
Picture of Cometic MLS Head Gasket Bore Thickness

Cometic MLS Head Gasket Bore Thickness

32 reviews
Vehicle Specific
from $12
In Stock (10+)
Picture for manufacturer Cometic
View Options
Free Shipping
Picture of Cometic MLS Head Gasket Bore Honda

Cometic MLS Head Gasket Bore Honda

72 reviews
Vehicle Specific
from $26
In Stock (10+)
Picture for manufacturer Cometic
View Options
Free Shipping
Picture of Cometic Valve Cover Gasket

Cometic Valve Cover Gasket

52 reviews
Vehicle Specific
from $4
In Stock (10+)
Picture for manufacturer Cometic
View Options
Free Shipping
Picture of Mr. Gasket Valve Cover Gasket Sets

Mr. Gasket Valve Cover Gasket Sets

75 reviews
Vehicle Specific
from $34
In Stock (10+)
Picture for manufacturer Mr. Gasket
View Options
Free Shipping
Picture of MAHLE Multi-Layer Steel Cylinder Head Gasket

MAHLE Multi-Layer Steel Cylinder Head Gasket

39 reviews
Vehicle Specific
from $21
In Stock (10+)
Picture for manufacturer MAHLE
View Options
Free Shipping
Picture of Cometic GM Gen V Small Block MLS Cylinder Head Gasket Bore

Cometic GM Gen V Small Block MLS Cylinder Head Gasket Bore

35 reviews
Vehicle Specific
from $92
In Stock (10+)
Picture for manufacturer Cometic
View Options
Free Shipping
Picture of Mr. Gasket Timing Cover Gasket Sets

Mr. Gasket Timing Cover Gasket Sets

63 reviews
Vehicle Specific
from $27
2 left at this price
Picture for manufacturer Mr. Gasket
View Options
Free Shipping
Picture of Cometic C5317-120 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.130

Cometic C5317-120 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.130

71 reviews
Part: C5317-120
Vehicle Specific
$228.77
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5751-120 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.060

Cometic C5751-120 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.060

46 reviews
Part: C5751-120
Vehicle Specific
$228.77
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5475-120 GM MLS Cylinder Head Gasket Bore Thick - LS1/LS2/LS3/LS6 3.910 120

Cometic C5475-120 GM MLS Cylinder Head Gasket Bore Thick - LS1/LS2/LS3/LS6 3.910 120

5 reviews
Part: C5475-120
Vehicle Specific
$228.77
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Mr. Gasket Timing Cover Seals

Mr. Gasket Timing Cover Seals

38 reviews
Vehicle Specific
from $9
In Stock (10+)
Picture for manufacturer Mr. Gasket
View Options
Free Shipping
Picture of Cometic C5317-098 GM MLS Cylinder Head Gasket Bore - LS1/LS2/LS3/LS6 4.130

Cometic C5317-098 GM MLS Cylinder Head Gasket Bore - LS1/LS2/LS3/LS6 4.130

66 reviews
Part: C5317-098
Vehicle Specific
$137.09
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5751-092 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.060

Cometic C5751-092 MLS Cylinder Head Gasket GM Bore - LS1/LS2/LS3/LS6 4.060

67 reviews
Part: C5751-092
Vehicle Specific
$137.09
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5475-098 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 3.910

Cometic C5475-098 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 3.910

78 reviews
Part: C5475-098
Vehicle Specific
$137.09
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5475-080 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 3.910

Cometic C5475-080 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 3.910

38 reviews
Part: C5475-080
Vehicle Specific
$137.09
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5751-089 MLS Cylinder Head Gasket GM Gen III/IV Bore - for LS1/LS2/LS3/LS6 4.060

Cometic C5751-089 MLS Cylinder Head Gasket GM Gen III/IV Bore - for LS1/LS2/LS3/LS6 4.060

9 reviews
Part: C5751-089
Vehicle Specific
$137.09
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5751-075 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.060

Cometic C5751-075 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.060

41 reviews
Part: C5751-075
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5317-070 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.130

Cometic C5317-070 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.130

73 reviews
Part: C5317-070
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5317-056 MLS Cylinder Head Gasket GM Gen III/IV Bore - for LS1/LS2/LS3/LS6 4.130

Cometic C5317-056 MLS Cylinder Head Gasket GM Gen III/IV Bore - for LS1/LS2/LS3/LS6 4.130

5 reviews
Part: C5317-056
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5318-056 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.160

Cometic C5318-056 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.160

42 reviews
Part: C5318-056
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5317-075 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.130

Cometic C5317-075 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.130

31 reviews
Part: C5317-075
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5475-066 MLS Cylinder Head Gasket GM LS1/LS2/LS3/LS6 Gen 3/4 Small Block V8

Cometic C5475-066 MLS Cylinder Head Gasket GM LS1/LS2/LS3/LS6 Gen 3/4 Small Block V8

23 reviews
Part: C5475-066
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5751-070 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.060

Cometic C5751-070 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.060

42 reviews
Part: C5751-070
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5318-075 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.160

Cometic C5318-075 MLS Cylinder Head Gasket GM Gen III/IV Bore - LS1/LS2/LS3/LS6 4.160

30 reviews
Part: C5318-075
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic

What's here for your GMC Sierra

  • Engine cylinder head gaskets, available as individual gaskets and full kits
  • Engine oil drain plug gaskets in rubber and OE-style materials
  • Manifold gaskets for front and rear positions
  • Performance and OE replacement gasket sets

The widest selection here comes from Cometic, ACDelco, Victor, and Dorman, spanning a broad range of gasket types, materials, and fitment styles for the GMC Sierra. Other categories GMC Sierra owners shop for: GMC Sierra Exterior Lights, GMC Sierra Valve Train Parts and GMC Sierra Springs and Suspension Parts, or browse all GMC Sierra parts and accessories.