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Welcome To Merchant Automotive—The Duramax Diesel Engine & Allison Transmission Performance Specialists You Can Count On!
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Silverado/Sierra
LB7 2001-2004
LLY 2004.5-2005
LBZ 2006-2007
LMM 2007.5-2010
LML 2011-2016
L5P 2017-2019
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LWN 2.8L 2016+
Express/Savana
LLY Van 2006-2007
LMM Van 2008-2010
LGH Van 2010.5-2016
LWN Van 2.8L 2016+
99-07 Gas Truck Transfer Case
261HD Transfer Case
263HD Transfer Case
NP246 Transfer Case
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Silverado/Sierra
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L5P 2017-2019
L5P 2017-2019
Air Intake, L5P
Axle and Differential, L5P
Belts, Tensioners and Pulleys, L5P
Brakes and Braking Systems, L5P
Cooling System, L5P
Diesel Fuel Additives, L5P
DIY Fabrication Parts, L5P
Engine, L5P
Exterior, L5P
Filters, L5P
Fuel System, L5P
Heating and Air Conditioning, L5P
Lift Pumps and Sumps, L5P
Oils, Fluids and Greases, L5P
Steering, L5P
Suspension Systems, L5P
Tools, L5P
Transfer Case, L5P
Transmissions, L5P
Tuning and Monitors, L5P
Turbo, Exhaust and Emissions, L5P
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