Engine Gaskets & Seals

56 Items

**LLY|LBZ Duramax Head Set Mahle HS54580A** $325.89
Fits: LLY|LBZ Duramax 2004.5-2007

Qty

**Duramax Exhaust Manifold Gaskets Mahle MS19398** $34.86
Fits: Duramax 2001-2016

Qty

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

Qty

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

Qty

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

Qty

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

Qty

**LB7|LBY Duramax Intake Manifold Gasket Set Mahle MS19402** $14.65
Fits: LB7|LBY Duramax 2001-2005

Qty

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

Qty

**Duramax 2001-2010 Water Pump Gasket Kit Mahle GS33752** $21.86
Fits: Duramax 2001-2010

Qty

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

Qty

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

Qty

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

Qty

**Duramax 01-16 Engine Timing Cover Seal Mahle 67775** $38.45
Fits: Duramax 2001-2016

Qty

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

Qty

**LLY|LBZ Duramax Engine Gasket Set Without Head Gaskets Mahle 95-3727** $460.34
Fits: LLY|LBZ Duramax 2004.5-2007

Qty

**Duramax 01-16 Exhaust Up-Pipe To Turbo Gasket Mahle F32918** $12.74
Fits: Duramax 2001-2016

Qty

**LB7|LLY Duramax Water Pump Gasket Kit Mahle C32062** $5.76
Fits: LB7|LLY Duramax 2001-2005

Qty

**Duramax 2001-2010 Fuel Filter Base & Hand Primer Seal Kit Alliant AP0029** $44.56
Fits: Duramax 2001-2010

Qty

**Duramax 01-16 Head Gasket Grade C Right Alliant AP0052** $41.21
Fits: Duramax 2001-2016

Qty

**Duramax 01-16 Head Gasket Grade C 1.05mm Left Alliant AP0049** $41.21
Fits: Duramax 2001-2016

Qty

**Duramax 2001-2010 Head Gasket 0.95mm Grade A Right Alliant AP0050** $41.21
Fits: Duramax 2001-2010

Qty

**Duramax 2001-2010 Head Gasket 0.95mm Grade A Left Alliant AP0047** $41.21
Fits: Duramax 2001-2010

Qty

**LLY Duramax High Pressure Fuel Pump Install Kit Alliant AP0128** $50.40
Fits: LLY Duramax 2004.5-2005

Qty

**Duramax Rear Main Seal GM 97209342** $67.49
Fits: Duramax 2001-2026

Qty

Engine Gaskets & Seals for Your LLY Duramax Silverado & Sierra
Keep your LLY Duramax-powered Chevrolet Silverado or GMC Sierra leak-free with a full range of engine gaskets and seals. Shop head gaskets, exhaust manifold and up-pipe gaskets, oil cooler seals, valve cover and rocker cover gasket sets, and rear main and timing cover seals from Mahle, GM, and Alliant Power — correctly matched to your exact build year and shared fitment across LB7, LLY, LBZ, and LMM generations where applicable. Whether you're fixing a single leak or doing a full gasket refresh on your 2500HD or 3500HD, we stock what it takes to keep your Duramax sealed tight.