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Description
Merchant Automotive 450401C Engine Gasket Set (W/Bolts & Head Gaskets)Get the Merchant Automotive 450401C Engine Gasket Set (W Bolts & Head Gaskets) from GAP for rebuilding your GM Duramax LML engine. When replacing blown head gaskets or rebuilding an LML Duramax diesel engine, you are going to need a wide variety of gaskets and seals to get the job done. Merchant Automotive has put together a complete LML Duramax Diesel engine gasket kit. Featuring OE style and upgraded parts, this kit will help to ensure that your LML
Get the Merchant Automotive 450401C Engine Gasket Set (W/Bolts & Head Gaskets) from GAP for rebuilding your GM Duramax LML engine. When replacing blown head gaskets or rebuilding an LML Duramax diesel engine, you are going to need a wide variety of gaskets and seals to get the job done. Merchant Automotive has put together a complete LML Duramax Diesel engine gasket kit. Featuring OE-style and upgraded parts, this kit will help to ensure that your LML gaskets perform as well as the factory gaskets did.
Kit Includes:
OE-Style Head Bolts
Grade C Head Gaskets
(1) - Injector Copper, LLY LBZ LMM LML, 2004.5+, Pack of 8
(1) - LML Injector Body Seal, 2011+, 8 Pack, Duramax
(1) - LML Injector Fuel Return Line Seal, 2011-2016, 8 Pack, Duramax
(1) - EGR Coolant Pipe Drain Seal, LML LGH, 2011-2016 Duramax
(2) - Upper Valve Cover Gasket, LML LGH, 2011-2016 Duramax
(1) - PCV Valve Seal, LML, 2011 Duramax
(1) - Upper Bypass Pipe Seal at Thermostat Housing, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Bypass Pipe Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - Oil Level Indicator Tube Seal, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Gasket - Exhaust Manifold To Up Pipe, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Gasket - Turbo To Up Pipe, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Intake Y Bridge Gasket, LBZ LMM LML LGH, 2006-2016 Duramax
(1) - RTV Sealant, High Temp, Aluminum, 2.8oz LB7 LLY LBZ LMM LML, L5P 2001-2019 Duramax
(1) - Fuel Feed Pipe Gasket, LML LGH, 2011-2016 Duramax
(2) - Thermostat Housing Crossover At Head Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Turbo Oil Feed Pipe Gasket, At Engine, LML LGH, 2011-2016 Duramax
(1) - Upper Intake Y Bridge Seal, LML, 2011-2016 Duramax
(1) - Turbo Mouthpiece Inlet Seal, LML LGH, 2011-2016 Duramax
(2) - EGR To Y Bridge Gasket, LML LGH, 2011-2016 Duramax
(1) - Oil Fill Tube Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - EGR Valve Gasket, LML LGH, 2011-2016 Duramax
(1) - Up Pipe To EGR Gasket, Cooler Bypass, LML, 2011-2016 Duramax
(1) - EGR Valve Cooler Gasket, LML, 2011-2016 Duramax
(1) - EGR Valve Gasket, Between EGR Cooler Assembly, LML, 2011-2016 Duramax
(1) - EGR Recirculation Pipe Gasket, LML, 2011-2016 Duramax
(2) - Exhaust Manifold Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - PCV Drain Ventilation Hose Fitting Seal, Hose Side And Block Side, LML LGH, 2011-2016 Duramax
(1) - Turbo Oil Return Pipe Gasket At Engine, LML LGH, 2011-2016 Duramax
(1) - PCV Oil Separator Seal, LML LGH, 2011-2016 Duramax
(2) - PCV Valve Seal, LML, 2012-2016, Turbo Resonator, LML, 2011-2016 Duramax
(2) - Lower Valve Cover Gasket LLY LBZ LMM LML
Kit Includes:
OE-Style Head Bolts
Grade C Head Gaskets
(1) - Injector Copper, LLY LBZ LMM LML, 2004.5+, Pack of 8
(1) - LML Injector Body Seal, 2011+, 8 Pack, Duramax
(1) - LML Injector Fuel Return Line Seal, 2011-2016, 8 Pack, Duramax
(1) - EGR Coolant Pipe Drain Seal, LML LGH, 2011-2016 Duramax
(2) - Upper Valve Cover Gasket, LML LGH, 2011-2016 Duramax
(1) - PCV Valve Seal, LML, 2011 Duramax
(1) - Upper Bypass Pipe Seal at Thermostat Housing, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Bypass Pipe Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - Oil Level Indicator Tube Seal, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Gasket - Exhaust Manifold To Up Pipe, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Gasket - Turbo To Up Pipe, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Intake Y Bridge Gasket, LBZ LMM LML LGH, 2006-2016 Duramax
(1) - RTV Sealant, High Temp, Aluminum, 2.8oz LB7 LLY LBZ LMM LML, L5P 2001-2019 Duramax
(1) - Fuel Feed Pipe Gasket, LML LGH, 2011-2016 Duramax
(2) - Thermostat Housing Crossover At Head Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Turbo Oil Feed Pipe Gasket, At Engine, LML LGH, 2011-2016 Duramax
(1) - Upper Intake Y Bridge Seal, LML, 2011-2016 Duramax
(1) - Turbo Mouthpiece Inlet Seal, LML LGH, 2011-2016 Duramax
(2) - EGR To Y Bridge Gasket, LML LGH, 2011-2016 Duramax
(1) - Oil Fill Tube Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - EGR Valve Gasket, LML LGH, 2011-2016 Duramax
(1) - Up Pipe To EGR Gasket, Cooler Bypass, LML, 2011-2016 Duramax
(1) - EGR Valve Cooler Gasket, LML, 2011-2016 Duramax
(1) - EGR Valve Gasket, Between EGR Cooler Assembly, LML, 2011-2016 Duramax
(1) - EGR Recirculation Pipe Gasket, LML, 2011-2016 Duramax
(2) - Exhaust Manifold Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - PCV Drain Ventilation Hose Fitting Seal, Hose Side And Block Side, LML LGH, 2011-2016 Duramax
(1) - Turbo Oil Return Pipe Gasket At Engine, LML LGH, 2011-2016 Duramax
(1) - PCV Oil Separator Seal, LML LGH, 2011-2016 Duramax
(2) - PCV Valve Seal, LML, 2012-2016, Turbo Resonator, LML, 2011-2016 Duramax
(2) - Lower Valve Cover Gasket LLY LBZ LMM LML
WARRANTY INFO:
1 Year Limited
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Nice Side Table
Color: Ink Black, Number of Items: 1
This is a nice side table. The assembly hardware is of good quality. The wood product finishes are very nice and the pieces assemble solidly. The instructions are easy to follow except for the drawer slides where a little more concentration is needed . . . or maybe it’s just me.
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Reviewed in the United States on February 16, 2026
★★★★★ 4
Nice and sturdy side table but the white is not white
Color: Farmhouse White, Number of Items: 2, Color: Farmhouse White, Number of Items: 2
This is a nice-looking and sturdy side table. We found it easy to assemble. It works well in small spaces. Be sure to check the dimensions so you aren’t surprised by how narrow and long it is. The drawer is small, but big enough to hold some remotes or other small items. We ordered the white with brown top. Unfortunately, it definitely is not white but more of an ivory or cream color.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Nice end tables.
Color: Farmhouse White, Number of Items: 2
Easy to assemble. Good quality. Not to big not to small.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Great table!
Color: Espresso, Number of Items: 1, Color: Espresso, Number of Items: 1
Just what we were looking for! The table was well made and went together very easily (my husband and I did it in well under an hour). We were very pleased with the quality of the wood. The only thing I would suggest to the company is that the glide parts weren’t labeled with stickers like every other part was. That would have been a big help.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Some frustration, but overall worth it.
Color: Ink Black, Number of Items: 1, Color: Ink Black, Number of Items: 1
Sturdy. Everything came in one piece and the instructions were some of the clearest I've encountered for Amazon furniture. Took about an hour for me to muscle my way through with manual screwdrivers only. I do not recommend a drill unless you go slow, because screw placement will make or break this for you in my opinion.
Problems I encountered and how I overcame them:
Drawer was rickety, kept catching when trying to pull out. I had to go back and tighten the tiny black screws on the rails. If they are not as flush as you can possibly get them, they will cause the wheels to catch. Once I got them as tight as possible, the drawer pull out was much smoother.
Getting the first set of rails on. Space was EXTREMELY tight and frustrating. I ended up using a small screwdriver from my house, pressing it tightly with one hand, and using a pair of pliers to turn the screwdriver. Like a socket wrench type action. This sucked, I can't lie. And it wasn't possible to put them on earlier due to the cam bolts/screws under the rail. But I got through it.
Overall, this is worth the money as long as you are willing to take your time and line things up properly and really use some elbow grease to get the screws in straight and flush.
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Reviewed in the United States on March 31, 2026