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Video PS4 Video Two Guys Garage Duramax Master Filter Head KitKevin and Willie B from Two Guys Garage highlight a common Duramax issue involving the fuel filter head
Out Of Stock
Truck U Duramax Engine Gasket Kits  PS video-t
 
Video PS13 Video Truck U Duramax Engine Gasket KitsOur Duramax engine gasket kits featured on the hit show Truck U
Out Of Stock
Duramax diesel fuel filter head rebuild PS video-t
 
Video PS15 Video Duramax diesel fuel filter head rebuildA comprehensive step by step on how to rebuild your fuel filter head on your Duramax Diesel
Out Of Stock
Duramax diesel fuel filter head rebuild PS video-t
 
Video PS17 Video Transfer Case Seal DriversEric highlights how to use our "Transfer Case Seal Drivers" to make sure the seals are installed properly.
Out Of Stock
Duramax Fuel Filter Combo Kit video thumbnail
 
Video PS24 Video: Duramax Fuel Filter Combo KitA overview of what all comes in the kit
Out Of Stock
MAximum Work Series Transmission thumbnail
 
Video PS38 Video: MAximum Work Series TransmissionAllison 1000 bench built transmission
Out Of Stock
MAximum Pro Series Transmission Video thumbnail
 
Video PS42 Video: MAximum Pro Series TransmissionAllison 1000 bench built transmission
Out Of Stock
Head Gasket Kit Video thumbnail
 
Video PS43 Video: Duramax Head Gasket KitsEverything needed to replace the head gaskets on your Duramax
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MAximum Transmission 60 second spot thumbnail
 
Video PS47 Video: MAximum Transmission 60 second spotIn this video we highlight what goes on at Merchant Automotive, including our MAximum Transmission product line.
Out Of Stock
Injector Cup Sealant-t
 
10014 Injector Cup Sealant, LB7, 2001-2004 Duramax
2500HD 3500 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004 Early



$2.86
Wheel Well Liner Kit, 10 Clips and 2 Panel Fasteners , 2001-2007 Duramax-t
 
10008 Wheel Well Liner Kit, 10 Clips and 2 Panel Fasteners , LB7 LLY LBZ , 2001-2007, Duramax10 pack of wheel well liner clips

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007 early

$4.99
 
10368 Fuel Filter Head Spacer, LML 2011-2016, DuramaxEasy to install spacer kit makes more room to service fuel filter
$8.99
Fuel Filter Head Spacer Kit, 2001-2010 , Black thumbnail
 
10006 Fuel Filter Head Spacer Kit, LB7 LLY LBZ LMM, 2001-2010, DuramaxEasy to install spacer kit makes more room to service fuel filter
$8.99
Intake Tube Seals LLY-t
 
10016 Intake Tube Seals LLY, 2004.5-2005 DuramaxSeals at the base of the tube going into the intake Y Bridge.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2004 Late, 2005

$9.18
MA Additive Bottle medium thumbnail
 
10508 Group MA Additive Diesel Fuel TreatmentA multi-benefit fuel additive that helps resolve issues associated with Ultra-Low Sulphur Diesel (ULSD) fuel.

Price $9.95 - $69.95
MA Aluminum Fuel FIlter  Head Bleeder Screw, 2001+ Duramax-t
 
10010 MA Aluminum Fuel FIlter Head Bleeder Screw, LB7 LLY LBZ LMM LML 2001-2016, DuramaxReplace your soft plastic stock bleeder screw with this MA Aluminum Bleeder Screw.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

$9.99
MA Heavy Duty Injector Return Line Bolt
 
10491 bundle MA Heavy Duty Injector Return Line Bolts at the Injector, LB7, 2001-2004, DuramaxThe MA Heavy Duty LB7 Injector Return Line Bolt has been redesigned to allow nearly double the tool engagement of GM 97228929.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004 early

Price $11.49 - $909.50
Right Angle Grease Adapter-t
 
10514 Right Angle Grease AdapterEasily installs on any grease gun
$11.95
Transmission Pressure Regulator Spring Service Tool thumbnail
 
10693 Transmission Pressure Regulator Spring Service Tool, LB7 LLY LBZ LMM LML L5P, 2001-2017, Allison 1000Holds spring back so the pin can be removed and replaced while installing a new spring or shim
$17.95
GM All Lights On Module, 2003-2007-t
 
FPE-GM-ALO GM All Lights On Module, 2003-2007 DuramaxSimply install the GM All Lights On Module to allow your high-beams, low-beams and fog lamps to simultaneously illuminate the road ahead.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2003, 2004, 2005, 2006, 2007

Classic 1500 Silverado Sierra:
2003, 2004, 2005, 2006, 2007

$19.95
LB7 High Idle Kit-t
 
10457 High Idle Kit, LB7, 2001-2004 DuramaxFull manual control of the elevated idle on your Duramax truck is possible with our High Idle Kit.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004 early *

$19.95
10458 LLY High Idle Kit thumbnail
 
10458 High Idle Kit, LLY, 2004.5-2005 DuramaxFull manual control of the elevated idle on your Duramax truck is possible with our High Idle Kit.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2004 late, 2005 *

$19.95
WIF, Water In Fuel Sensor Wrench, 2001-2011 Duramax-t
 
10002 WIF, Water In Fuel Sensor Wrench, LB7 LLY LBZ LMM 2001-2011, DuramaxThe Original Water in Fuel Sensor Wrench

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 *

$19.95
Fluid Analysis Kit-t
 
10500 Fluid Analysis Kit
$24.95
Performance Transfer Case Oil-t
 
10193 Performance Transfer Case Oil, DuramaxOur recommended fluid for all GM transfer cases that call for ATF or Auto Trak II. One Transfer Case will use 2 Quarts
$25.99
MA Deep Filter Lock, LB7/LLY/LBZ/LMM/LML, 2001+-t
 
10690 Allison 1000 Deep Filter Lock, LB7 LLY LBZ LMM LML L5P, 2001-2018 DuramaxBolts evenly in relation to the filter for a secure hold. Redesigned to fit both the old (29537966) and new 29542824 style Allison deep pan filter

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 *

$26.95
Fumoto Oil Drain Valve Kit, 2001+ Duramax thumbhnail
 
10009 Fumoto Oil Drain Valve Kit, LB7 LLY LBZ LMM LML LGH, 2001-2016, DuramaxA simple way to drain your oil. Now comes with safety clip and nipple seal at no extra charge!

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

2500 3500 LLY LMM LGH Van Express Savana 6.6L V8 Duramax diesel:
2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

$28.95
Snap Ring Kit 261HD-t
 
10065 Snap Ring Kit 261HDSnap rings needed when rebuilding a transfer case.
$29.95
15120611 Radiator Coolant Surge Tank, LMM thumbnail
 
15120611 Radiator Coolant Surge Tank, LMM, 2007.5-2010OEM tank
$49.95
22866587 Radiator Coolant Surge Tank, LML thumbnail
 
22866587 Radiator Coolant Surge Tank, LML, 2011-2012, DuramaxOEM replacement tank
$49.95
Maintenance Filter Pack-t
 
10404 Maintenance Filter Pack, LB7 LLY LBZ LMM LML, 2001-2016, DuramaxIncludes fuel, oil and transmission filter

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 20010, 2011, 2012, 2013, 2014, 2015, 2016 *

$60.93
Billet Coolant Block Off Plate-t
 
10089 MA Billet Coolant Block Off Plate, LB7 LLY LBZ, LMM LML L5P, 2001-2017, DuramaxUses the factory bolts

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 *

$65.00
Transfer Case Pump Upgrade Kit
 
10001 bundle Transfer Case Pump Upgrade KitThe Ultimate Solution to a problem found in Chevy and GMC light duty trucks and utilities from 1998-2007

Price $75.00 - $113.94
Stainless Tie Rod Sleeves thumbnail
 
10512 Stainless Tie Rod Sleeves -Pair, LWN, 2016-2018, DuramaxSleeves thread onto the inner tie rod making it nearly impossible to break or bend.

GM Colorado Canyon 2.8L 4cyl Duramax diesel:
2016, 2017, 2018

$76.95
Stainless Tie Rod Sleeves -Pair, LB7/LLY/LBZ/LMM, 2001-2010-t
 
10012 Stainless Tie Rod Sleeves -Pair, LB7 LLY LBZ LMM, 2001-2010 DuramaxMade from High Quality Stainless Steel

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

$79.95
LML Stainless Steel Tie Rod Sleeves, 2011+-t
 
10304 Stainless Steel Tie Rod Sleeves, LML L5P, 2011-2018, Duramax
2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

$94.99
19353729 Radiator Coolant Surge Tank, LB7/LLY/LBZ thumbnail
 
19353729 Radiator Coolant Surge Tank, LB7 LLY LBZ, 2001-2007Includes low coolant sensor
$109.95
84257137 Radiator Coolant Surge Tank, L5P thumbnail
 
84257137 Radiator Coolant Surge Tank, L5P, 2017-2018, DuramaxIncludes pressure cap
$115.95
Allison1000 Pump Busing Tool ,thumbnail
 
10518 Allison 1000 Pump Bushing Installer and Removal Tool, LB7 LLY LBZ LMM LML L5P, 2001+Best way to properly remove and install the pump bushing to the correct position

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018*


$124.95
Transmission Rear Housing Support, Transfer Case Brace, LML, 2011+-t
 
10357 Transmission Rear Housing Support, Transfer Case Brace, LML L5P, 2011-2019, Allison 1000Fits '11-19 Allison 4x4 Transmissions. This support can help keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft).
$134.99
ZF6, Transmission Rear Housing Support, Transfer Case Brace-t
 
10369 ZF6, Transmission Rear Housing Support, Transfer Case BraceFits '01-'06 Duramax with the ZF6 Transmission. This support can help keep your Rear Adapter Housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft).
$134.99
Rear Housing Support LMM, Transfer Case Brace, 2007.5-2010 Duramax-t
 
10195 Transmission Rear Housing Support LMM, Transfer Case Brace, 2007.5-2010 Allison 1000Fits '07.5-10 Allison 4x4 Transmissions. This support can help keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft).

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2007 late, 2008, 2009, 2010 *

$134.99
 
10186 Transmission Rear Housing Support, Transfer Case Brace, LB7 LLY LBZ, 2001-2007, Allison 1000Fits '01-'07 Allison 4x4 Transmissions (Including the 8.1 L Engine).  . This support can help keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft).

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007 *

$134.99
Allison Transmission PTO Cover To Engine Stand Adapter thumbnail
 
10730 Allison 1000 Transmission PTO Cover To Engine Stand Adapter, LB7 LLY LBZ LMM LML L5P, 2001-2017Securely mount your 275lb Allison 1000 transmission to a engine stand
$149.95
MAX Flow Left Side Manifold Upgrade Kit-t
 
10018 MAX Flow Left Side Manifold Upgrade Kit, DuramaxA complete kit with everything needed!
$159.95
23106015 Radiator Coolant Surge Tank, LML, 2013-2016 thumbnail
 
23106015 Radiator Coolant Surge Tank, LML, 2013-2016, DuramaxOEM replacement tank
$169.95
Engine Seal Driver Kit thumbnail
 
10371 Group Engine Seal Driver Kit, LB7 LLY LBZ LMM LML , 2001-2016 DuramaxFront and Rear Engine Crankshaft Seal Installers

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 *

Price $200.00 - $296.90
10801-8 New MA Fuel Injectors 8 pack
 
10801-8 Group New MA Fuel Injectors, LB7, 2001-2004, DuramaxNew LB7 injectors updated to meet Merchant Automotive specifications with no Core Charge! Covered by a 12 month / unlimited mile warranty or 24 months when ordered with the deluxe install kit!

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004

Price $299.95 - $3,443.63
MA High Performance Motor Mounts, LB7/LLY/LBZ/LMM, 2001-2010-t
 
10000 MA High Performance Motor Mounts, LB7 LLY LBZ LMM, 2001-2010, DuramaxMany customers and competitors have issues with excessive movement or even ripping stock motor mounts which frequently leads to costly damages. Our solution is MA High Performance Motor Mounts

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 *

$409.45
10044 Transfer Case 149/246/261HD/263HD Combo Kit
 
10770 bundle Transfer Case 149 246 261HD 263HD Combo Kit- Magnesium HousingRepair your transfer case with out any hassle. This case is not for trucks with the Allison transmission

Price $470.64 - $510.63
Transfer Case Pump Upgrade Combo 263XHD / 261XHD
 
10772 bundle 261XHD, 263XHD Transfer Case Pump Upgrade Combo, LB7 LLY LBZ, 2001-2007, DuramaxFits 261XHD/263XHD Transfer Cases. Everything you need to repair your pump rub issue in one box!

Price $499.95 - $597.68