LMM Duramax Gaskets & Seals

Protect your 2007–2010 LMM Duramax engine with premium gaskets and seals designed for precise fitment and long-lasting performance. From head gaskets and valve cover gaskets to oil seals and complete gasket kits, these components are built to withstand high combustion pressures, extreme temperatures, and daily driving stresses. Whether you’re performing routine maintenance or a full rebuild, trust our high-quality gaskets and seals to keep your engine leak-free and running smoothly.

59 Items

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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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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LMM Duramax Head Set Mahle HS54580B — LMM Duramax Head Set Mahle HS54580B $354.64
Fits: LMM Duramax 2007.5-2010

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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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LBZ|LMM Duramax Intake Manifold Gasket Set Mahle MS19403 — LBZ|LMM Duramax Intake Manifold Gasket Set Mahle MS19403 $17.01
Fits: LBZ|LMM Duramax 2006-2010

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LLY|LBZ|LMM Duramax Lower Rocker Cover Gasket Set Mahle VS50434 — LLY|LBZ|LMM Duramax Lower Rocker Cover Gasket Set Mahle VS50434 $65.80
Fits: LLY|LBZ|LMM Duramax 2004.5-2010

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LMM Duramax Lower Engine Gasket Set Mahle CS54580A — LMM Duramax Lower Engine Gasket Set Mahle CS54580A $149.94
Fits: LMM Duramax 2007.5-2010

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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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LLY|LBZ|LMM Duramax Valve Cover Gasket Set Mahle VS50439 — LLY|LBZ|LMM Duramax Valve Cover Gasket Set Mahle VS50439 $84.35
Fits: LLY|LBZ|LMM Duramax 2004.5-2010

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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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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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LMM Duramax Engine Gasket Kit Without Head Gasket Mahle 95-3734 — LMM Duramax Engine Gasket Kit Without Head Gasket Mahle 95-3734 $440.51
Fits: LMM Duramax 2007.5-2010

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LMM Duramax EGR Tube To EGR Valve Gasket Mahle F39394 — LMM Duramax EGR Tube To EGR Valve Gasket Mahle F39394 $9.63
Fits: LMM Duramax 2006-2010

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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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LBZ|LMM Duramax CP3 Install Kit GM PKCP3KIT — LBZ|LMM Duramax CP3 Install Kit GM PKCP3KIT $206.19
Fits: LBZ|LMM Duramax 2006-2010

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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 07-20 Power Brake Booster Gasket AcDelco 22872387 — Sold Out
Duramax 07-20 Power Brake Booster Gasket AcDelco 22872387 $9.28
Fits: Duramax 2007-2020

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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LMM Duramax Heater Outlet Pipe Seal GM 94011614 — LMM Duramax Heater Outlet Pipe Seal GM 94011614 $6.08
Fits: LMM Duramax 2007.5-2010

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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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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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LBZ & LMM Duramax Engine Intake Manifold Gasket GM 97363723 — LBZ & LMM Duramax Engine Intake Manifold Gasket GM 97363723 $44.75
Fits: LBZ & LMM Duramax 2006-2010

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Duramax 06-16 Fuel Injection Throttle Body Mounting Gasket GM 97375503 — Duramax 06-16 Fuel Injection Throttle Body Mounting Gasket GM 97375503 $16.17
Fits: Duramax 2006-2016

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Duramax 2007-2009 EGR Valve Gasket Mahle F32393 — Duramax 2007-2009 EGR Valve Gasket Mahle F32393 $12.34
Fits: Duramax 2007-2009

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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 17-21 Engine Oil Drain Plug Gasket AcDelco 12616850 — Duramax 17-21 Engine Oil Drain Plug Gasket AcDelco 12616850 $7.21
Fits: 2500HD/3500 Silverado | Sierra 2017-2021

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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 06-19 Allison 1000 Transmission C2 Clutch Piston Inner Seal Allison 29542808 — Duramax 06-19 Allison 1000 Transmission C2 Clutch Piston Inner Seal Allison 29542808 $7.18
Fits: 2500HD/3500 Silverado | Sierra 2006-2019

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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 06-19 Allison 1000 Transmission C1 C2 Clutch Piston Outer Seal Allison 24269245 — Duramax 06-19 Allison 1000 Transmission C1 C2 Clutch Piston Outer Seal Allison 24269245 $10.26
Fits: Duramax 2006-2019

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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

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Duramax Lower Valve Cover Gasket GM 97321295 — Duramax Lower Valve Cover Gasket GM 97321295 $107.69
Fits: LLY|LBZ|LMM|LML Duramax 2004.5-2016

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Duramax Head Install Kit Without Studs Alliant AP0063 — Duramax Head Install Kit Without Studs Alliant AP0063 $531.19
Fits: LLY | LBZ | LMM Duramax 2004.5-2010

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

Fits: LMM Duramax 2007.5-2010

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LMM Duramax Head Gasket Set Powerstroke Products PP-HGS-6.6DMAXLMM — LMM Duramax Head Gasket Set Powerstroke Products PP-HGS-6.6DMAXLMM $375.00
Fits: LMM Duramax 2007-2010

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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 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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