LB7 Duramax Gaskets & Seals

Prevent leaks and maintain engine integrity with premium LB7 Duramax gaskets and seals. Designed for 2001–2004 6.6L Duramax engines, these durable components ensure a tight fit and long-lasting performance. Ideal for repairs and rebuilds, shop high-quality gasket and seal kits to keep your diesel engine running smoothly.

56 Items

LB7 Duramax Top End Gasket Kit Cometic PRO3008T — LB7 Duramax Top End Gasket Kit Cometic PRO3008T $501.35
Fits: LB7 Duramax 2001-2004

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Duramax Right Side Cylinder Head Gasket Mahle 54582 — Duramax Right Side Cylinder Head Gasket Mahle 54582 $93.71
Fits: Duramax 2001-2016

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Duramax Exhaust Manifold Gaskets Mahle MS19398 — Duramax Exhaust Manifold Gaskets Mahle MS19398 $41.83
Fits: Duramax 2001-2016

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LB7 Duramax Head Set Mahle HS54580 — LB7 Duramax Head Set Mahle HS54580 $298.03
Fits: LB7 Duramax 2001-2004

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LB7 Duramax Fuel Injector Seal Kit Mahle GS33500A — LB7 Duramax Fuel Injector Seal Kit Mahle GS33500A $4.11
Fits: LB7 Duramax 2001-2004

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Duramax 2001-2010 Engine Oil Pan Gasket Mahle OS32284 — Duramax 2001-2010 Engine Oil Pan Gasket Mahle OS32284 $22.80
Fits: Duramax 2001-2010

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Duramax Rear Main Engine Crankshaft Seal Mahle 67777 — Duramax Rear Main Engine Crankshaft Seal Mahle 67777 $57.86
Fits: Duramax 2001-2016

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LB7|LLY|LBZ Duramax Lower Engine Gasket Set Mahle CS54580 — LB7|LLY|LBZ Duramax Lower Engine Gasket Set Mahle CS54580 $157.71
Fits: LB7|LLY|LBZ Duramax 2001-2007

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LB7|LBY Duramax Intake Manifold Gasket Set Mahle MS19402 — LB7|LBY Duramax Intake Manifold Gasket Set Mahle MS19402 $15.42
Fits: LB7|LBY Duramax 2001-2005

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LB7 Duramax Valve Cover Gasket Set Mahle VS50549 — LB7 Duramax Valve Cover Gasket Set Mahle VS50549 $95.20
Fits: LB7 Duramax 2001-2004

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Duramax 01-16 Thermostat Housing Gasket Mahle C31900 — Duramax 01-16 Thermostat Housing Gasket Mahle C31900 $7.26
Fits: Duramax 2001-2016

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Duramax 2001-2010 Water Pump Gasket Kit Mahle GS33752 — Duramax 2001-2010 Water Pump Gasket Kit Mahle GS33752 $24.83
Fits: Duramax 2001-2010

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Duramax 01-16 Water Pump Seal Mahle K31904 — Duramax 01-16 Water Pump Seal Mahle K31904 $2.03
Fits: Duramax 2001-2016

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Duramax 01-16 Exhaust Manifold To Up-Pipe Gasket Mahle F31903 — Duramax 01-16 Exhaust Manifold To Up-Pipe Gasket Mahle F31903 $9.14
Fits: Duramax 2001-2016

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LB7 Duramax Valve Cover Gasket & Injector Seal Kit Mahle GS33757 — LB7 Duramax Valve Cover Gasket & Injector Seal Kit Mahle GS33757 $102.53
Fits: LB7 Duramax 2001-2004

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Duramax 01-16 Engine Timing Cover Seal Mahle 67775 — Duramax 01-16 Engine Timing Cover Seal Mahle 67775 $40.48
Fits: Duramax 2001-2016

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LB7 Duramax Valve Cover Gasket Set Mahle VS50438 — LB7 Duramax Valve Cover Gasket Set Mahle VS50438 $68.79
Fits: LB7 Duramax 2001-2004

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Duramax 2001-2010 Valve Stem Seal Kit Mahle SS45974 — Duramax 2001-2010 Valve Stem Seal Kit Mahle SS45974 $23.71
Fits: Duramax 2001-2010

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Duramax 01-16 Exhaust Up-Pipe To Turbo Gasket Mahle F32918 — Duramax 01-16 Exhaust Up-Pipe To Turbo Gasket Mahle F32918 $15.30
Fits: Duramax 2001-2016

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LB7 Duramax Engine Gasket Kit Without Head Gasket Mahle 95-3726 — LB7 Duramax Engine Gasket Kit Without Head Gasket Mahle 95-3726 $473.22
Fits: LB7 Duramax 2001-2004

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LB7|LLY Duramax Water Pump Gasket Kit Mahle C32062 — LB7|LLY Duramax Water Pump Gasket Kit Mahle C32062 $6.55
Fits: LB7|LLY Duramax 2001-2005

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Duramax 2001-2010 Fuel Filter Base & Hand Primer Seal Kit Alliant AP0029 — Duramax 2001-2010 Fuel Filter Base & Hand Primer Seal Kit Alliant AP0029 $42.04
Fits: Duramax 2001-2010

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Duramax 01-16 Head Gasket Grade C Right Alliant AP0052 — Duramax 01-16 Head Gasket Grade C Right Alliant AP0052 $38.88
Fits: Duramax 2001-2016

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Duramax 01-16 Head Gasket Grade C 1.05mm Left Alliant AP0049 — Duramax 01-16 Head Gasket Grade C 1.05mm Left Alliant AP0049 $38.88
Fits: Duramax 2001-2016

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Duramax 2001-2010 Head Gasket 0.95mm Grade A Right Alliant AP0050 — Duramax 2001-2010 Head Gasket 0.95mm Grade A Right Alliant AP0050 $38.88
Fits: Duramax 2001-2010

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Duramax 2001-2010 Head Gasket 0.95mm Grade A Left Alliant AP0047 — Duramax 2001-2010 Head Gasket 0.95mm Grade A Left Alliant AP0047 $38.88
Fits: Duramax 2001-2010

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Duramax Rear Main Seal GM 97209342 — Duramax Rear Main Seal GM 97209342 $67.49
Fits: Duramax 2001-2022

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Duramax Front Main Seal GM 97209341 — Duramax Front Main Seal GM 97209341 $63.26
Fits: Duramax 2001-2021

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Duramax Water Pump Pipe To Oil Cooler Seal GM 94011702 — Duramax Water Pump Pipe To Oil Cooler Seal GM 94011702 $32.03
Fits: Duramax 2001-2019

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Duramax Oil Cooler Outlet Gasket - Drivers Side GM 12640849 — Duramax Oil Cooler Outlet Gasket - Drivers Side GM 12640849 $11.67
Fits: Duramax 2011-2022

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Duramax Oil Cooler Outlet Gasket - Passenger Side GM 12640850 — Duramax Oil Cooler Outlet Gasket - Passenger Side GM 12640850 $11.75
Fits: Duramax 2010-2020

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Duramax 01-16 Water Pump Coolant Bypass Tube Upper O-Ring Seal GM 94011602 — Duramax 01-16 Water Pump Coolant Bypass Tube Upper O-Ring Seal GM 94011602 $4.20
Fits: Duramax 2001-2016

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Duramax 01-16 Coolant Bypass Tube Lower Pipe Seal GM 94011603 — Duramax 01-16 Coolant Bypass Tube Lower Pipe Seal GM 94011603 $3.87
Fits: Duramax 2001-2016

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Duramax 01-16 Exhaust Manifold To Up-Pipe Gasket GM 97188685 — Duramax 01-16 Exhaust Manifold To Up-Pipe Gasket GM 97188685 $16.97
Fits: Duramax 2001-2016

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Duramax 01-16 Exhaust Up-Pipe To Turbo Gasket GM 97192618 — Duramax 01-16 Exhaust Up-Pipe To Turbo Gasket GM 97192618 $18.08
Fits: Duramax 2001-2016

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LB7 Duramax Valve Cover Noise Isolator Grommet GM 97213862 — LB7 Duramax Valve Cover Noise Isolator Grommet GM 97213862 $35.40
Fits: LB7 Duramax 2001-2004

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Duramax 01-16 Oil Cooler O-Ring GM 94399279 — Duramax 01-16 Oil Cooler O-Ring GM 94399279 $6.56
Fits: Duramax 2001-2016

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Duramax 01-16 Oil Cooler To Rear Cover Gasket GM 12709792 — Duramax 01-16 Oil Cooler To Rear Cover Gasket GM 12709792 $6.56
Fits: Duramax 2001-2016

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Duramax 01-16 Oil Cooler To Block O-Ring Seal GM 97216175 — Duramax 01-16 Oil Cooler To Block O-Ring Seal GM 97216175 $8.24
Fits: Duramax 2001-2016

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Duramax Engine Oil Cooler Seal GM 97358847 — Duramax Engine Oil Cooler Seal GM 97358847 $24.70
Fits: Duramax 2001-2016

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Duramax Catalytic Converter To DPF Gasket AcDelco 15126137 — Duramax Catalytic Converter To DPF Gasket AcDelco 15126137 $11.68
Fits: Duramax 2001-2005 | 2007.5-2022

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Duramax Rear Adapter Water Housing Cover Gasket GM 97229043 — Duramax Rear Adapter Water Housing Cover Gasket GM 97229043 $8.41
Fits: Duramax 2001-2022

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Duramax Front Main Seal AcDelco 97209341 — Duramax Front Main Seal AcDelco 97209341 $51.80
Fits: 2500/3500HD Silverado | Sierra 2001-2022

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Duramax 01-19 1000 Transmission C5 Clutch Piston Inner Seal Allison 29536859 — Duramax 01-19 1000 Transmission C5 Clutch Piston Inner Seal Allison 29536859 $14.49
Fits: 2500HD/3500 Silverado | Sierra 2001-2019

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Duramax 01-19 Allison 1000 Power Take Off Cover Gasket AcDelco 29531325 — Duramax 01-19 Allison 1000 Power Take Off Cover Gasket AcDelco 29531325 $10.05
Fits: 2500HD/3500 Silverado | Sierra 2001-2019

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Duramax 01-16 Head Gasket Grade C Right GM 12637788 — Duramax 01-16 Head Gasket Grade C Right GM 12637788 $140.64
Fits: Duramax 2001-2016

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Duramax 01-16 Head Gasket Grade C Left GM 12637785 — Duramax 01-16 Head Gasket Grade C Left GM 12637785 $129.96
Fits: Duramax 2001-2016

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Duramax 2001-2010 Head Gasket Grade B Alliant AP0048 — Duramax 2001-2010 Head Gasket Grade B Alliant AP0048 $38.88
Fits: Duramax 2001-2010

Select Options

GM 98340724 Fuel Line FICM Banjo Seal — GM 98340724 Fuel Line FICM Banjo Seal $3.86
Fits: LB7|LLY Duramax 2001-2005

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LB7 Duramax Head Gasket Set Powerstroke Products PP-HGS-LB7 — LB7 Duramax Head Gasket Set Powerstroke Products PP-HGS-LB7 $375.00
California Restricted

Fits: LB7 Duramax 2001-2004

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Duramax 2001-2016 Wave-Stopper Cylinder Head Gasket (Grade C) MAHLE 5459X — Duramax 2001-2016 Wave-Stopper Cylinder Head Gasket (Grade C) MAHLE 5459X $138.83
Fits: Duramax 2001-2016

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Duramax 2001-2016 Wave-Stopper Cylinder Head Gasket (Grade C) MAHLE 5459X — Duramax 2001-2016 Wave-Stopper Cylinder Head Gasket (Grade C) MAHLE 5459X $138.83
Fits: Duramax 2001-2016

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LB7 Duramax Valve Cover Gasket Kit Dorman 615-203 — LB7 Duramax Valve Cover Gasket Kit Dorman 615-203 $76.97
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LB7 Duramax Fuel Rail Return Line Seals Dorman 904-103 — LB7 Duramax Fuel Rail Return Line Seals Dorman 904-103 $23.60
Fits: LB7 Duramax 2001-2004

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Duramax 01-16 Left Side Cylinder Head Gasket Mahle 55027 — Duramax 01-16 Left Side Cylinder Head Gasket Mahle 55027 $58.71
Fits: Duramax 2001-2016

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Duramax 1992-2000 Cylinder Head Gasket Set Mahle HS4021A — Duramax 1992-2000 Cylinder Head Gasket Set Mahle HS4021A $156.64
Fits: Duramax 1992-2000

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