GMC 3000 Gaskets & Seals

Cometic MLX Head Gaskets C15575-040

.040" MLX HEAD GASKET

Part Number: CGT-C15575-040

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5399-060

Cometic MLS Head Gaskets C5399-060

Head Gasket, MLS, 4.030 in. Bore, .060 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5399-060

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE AccuSeal Pro Rear Main Seals 21104

Rear Main Seal, 2-Piece, Viton®, Chevy, Rocket Block, Each

Part Number: SCE-21104

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE AccuSeal Pro Intake Gaskets 211101

Gasket, Manifold, Intake, AccuSeal Pro, Chevy, Small Block, Set

Part Number: SCE-211101

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Remflex Exhaust Header Gasket Sets 2040

Exhaust Header and Manifold Gaskets, Round Port, Graphite, Header Adapter Flange Gasket, Fits 7-bolt Stahl Pattern, Chevy Small Block, Pair

Part Number: RFL-2040

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5401-040

Head Gasket, 4.135 in. Bore, .040 in. Compressed Thickness, Chevy, Small Block, Each

Part Number: CGT-C5401-040

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5248-098

Head Gasket, MLS, 4.165 in. Bore, .098 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5248-098

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5246-070

Head Gasket, MLS, 4.100 in. Bore, .070 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5246-070

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5269-045

Head Gasket, MLS, 4.060 in. Bore, .045 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5269-045

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Flowtech Replacement Header Gasket Sets 99161FLT

Exhaust Gaskets, Header, Fiber, Stock Port, Chevy, Small Block, Kit

Part Number: BIG-99161FLT

4.65 out of 5 stars ( 26 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE Pro Copper Head Gaskets P111543

Head Gasket, Copper, 4.155 in. Bore, 0.043 in. Thickness, Chevy, Small Block, Each

Part Number: SCE-P111543

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5249-030

Head Gasket, MLS, 4.200 in. Bore, .030 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5249-030

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Mahle Original Intake Manifold Gaskets MS15315

Intake Manifold Gaskets, Original, Rectangular Port, Composite, Chevy, Small Block, Kit

Part Number: MAH-MS15315

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Fel-Pro Conversion Set Gaskets CS 7733-2

Gaskets, Conversion Set, Chevy, 350, Set

Part Number: FEL-CS77332

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5248-066

Head Gasket, MLS, 4.165 in. Bore, .066 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5248-066

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE AccuSeal Pro Valve Cover Gaskets 211076

Valve Cover Gaskets, AccuSeal Pro, Laminated High-Temperature Silicone/Cork, Chevy, Small Block, Pair

Part Number: SCE-211076

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C15495-040

.040" MLS 18 OR 23 DEG H/G

Part Number: CGT-C15495-040

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE Titan Copper Head Gaskets T111543

Head Gaskets, Titan, Copper, 4.155 in. Bore, .043 in. Compressed Thickness, Chevy, Small Block, Each

Part Number: SCE-T111543

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Fel-Pro Valve Stem Seals SS 5112

Valve Stem Seals, Rubber, O-Ring, 5/16 in. Valve Stem, Set of 16

Part Number: FEL-SS5112

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5248-036

Head Gasket, MLS, 4.165 in. Bore, .036 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5248-036

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE AccuSeal Pro Rear Main Seals 21155

Rear Main Seal, 1-Piece, Viton®, Chevy, Each

Part Number: SCE-21155

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5249-075

Head Gasket, MLS, 4.200 in. Bore, .075 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5249-075

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE AccuSeal E Intake Gaskets 111119

Gaskets, Manifold, Intake, AccuSeal E, Vortec CPI, 2.10 in. Height, .0625 in. Thick, Chevy, Small Block, Set

Part Number: SCE-111119

2.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

Cometic MLS Head Gaskets C5474-027

Head Gasket, MLS, 4.080 in. Bore, .027 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5474-027

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air

SCE MLS Spartan Head Gaskets M110339

Head Gasket, MLS Sparten, Multi-Layer Stainless Steel, 4.035 in. Bore, 0.039 in. Compressed Thickness, Chevrolet, Small Block, Each

Part Number: SCE-M110339

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 11/16/2026 if shipped by air