Shop By Category
Your Cart

Merchant Automotive

Merchant Automotive offers custom high performance parts for the 6.6L Duramax Diesel.

Brand: Merchant Automotive Part Number: 10384
Replace the Stock Turbo Resonator with this Billet Delete Plug to clean up under your hood! Replace the Stock Turbo Resonator with this Billet Delete Plug to clean up under your hood! TIP:"To help install, start with engine at operating temp, keep plug at room temp or colder"  ..
$30.42
Brand: Merchant Automotive Part Number: 10251
Needed for LB7,LLY, LBZ, LMM, LML New AcDelco Glow Plugs. Set of Eight. These nuts take a 7mm wrench.  New LB7 glow plugs come with nuts. Part number: 10251..
$5.62
Brand: Merchant Automotive Part Number: 10307
Replace these when removing the rear engine cover to block.  Seals water jackets.    Sold in pairs...
$7.68
Brand: Merchant Automotive Part Number: 4505XC
Included in the Base kit: OEM Grade C Right and Left Head Gaskets 36 New OEM Replacement Head Bolts Upper valve cover gaskets (now included in kit) All Needed Seals And Gaskets Other kits available above with additional listed parts. NOT INCLUDED in the kit : Lower thin ste..
$793.48
Brand: Merchant Automotive Part Number: 10218
The ultimate kit to recondition your fuel filter head assembly.   Includes:   Fuel Filter Head Rebuild Kit Billet WIF Plug Billet Bleeder Screw..
$43.35
Brand: Merchant Automotive Part Number: 10192
All the seals needed to rebuild your leaking fuel filter head! 2- U Shaped Seals 3- Internal seals 1- Bleeder screw seal..
$20.08
Brand: Merchant Automotive Part Number: 10001
Here is the best upgrade you can make to your GM transfer case(model 136, 146, 246, 261, 261HD, 263HD, 263XHD, 261XHD).  Prevent the ever increasing problem of pump rub.  What is "pump rub"     The GM transfer cases use a gear pump inside the case that is driven off the mainshaft.  The pump forces..
$68.02
Brand: Merchant Automotive Part Number: 10263
Everything required to properly install the oil cooler on your Duramax.   Fits 2001 - 2010 applicationsTrucks with newer style oil coolers may require the additional GM 12631281 Oil Cooler to block seal that is available through your local GM dealer. Merchant Automotive: 10263..
$57.81
Brand: Merchant Automotive Part Number: 10117
Dont waste time trying to locate all the individual gaskets and seals needed to rebuild your LB7.  Simply order one part number and have it in one box.    This kit does not include any bolts or other torque to yield fasteners..
$985.62
Brand: Merchant Automotive Part Number: 10051
Stronger than the stock plastic sensor Will not turn on a check engine light Fits your MA WIF Wrench Serviceable with your 3/8" drive ratchet Comes with a new o-ring   GM: 10051..
$30.42
Brand: Merchant Automotive Part Number: 10000
These high performance motor mounts have been designed to maintain the alignment features of stock mounts while adding strength and durability of a high performance polyurethane mount for years of trouble free operation. By holding your engine firmly in place these mounts give an enhanced feel to yo..
$407.93
Brand: Merchant Automotive Part Number: 10022
Deluxe package includes everything for proper injector replacement.This kit does not come with injectors.   Includes : Injector removal tool (Not included in kit 10039) Lower valve cover bolts Upper valve cover bolts Injector Lines Filter head rebuild kit Bleeder screw Water in fuel plug Fuel fi..
$1,050.24
Brand: Merchant Automotive Part Number: 10293
A great solution to tight clearance when a large turbo downpipe is used. Allows the transmission fluid to be checked from the driver's side of the truck. Uses the factory indicator stick on the LB7/LLY/LBZ trucks. If using with the 08+ trucks (LMM or newer) you MUST use the early indicator dip stick..
$108.44
Brand: Merchant Automotive Part Number: 10207
A permanant solution to a growing problem.  As these trucks are getting a few years older, the transmission cooler lines can start to develop leaks.  This is more common in cold weather as the rubber hose on the line shrinks and allows leaks around the factory crimp.   Install our repair kit for a..
$308.29
Brand: Merchant Automotive Part Number: 10186
Fits '01-'07 Allison 4x4 Transmissions.  This support can keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft). By Merchant Automotive part number: 10186..
$113.25
Brand: Merchant Automotive Part Number: 10010
A faulty bleeder screw can cause a no start concern, a start and dies concern.  Take a look at the pictures and you can see a stock bleeder screw that is leaking and caused a loss of prime situation.  Don't get caught stranded!..
$12.23
Brand: Merchant Automotive Part Number: 10185
Replace your stock drain plug with this Magnetic Drain Plug Magnetic to catch small debris and help extend fluid life.  Kit contains a Magnetic Drain plug and a new fill plug made out of a high strength corrosion resistant 304 Stainless Steel...
$18.02
Brand: Merchant Automotive Part Number: 10008
10 pack of wheel well liner clips Merchant part number: 10008..
$6.03
Brand: Merchant Automotive Part Number: 10058
If you are replacing your injectors, this supplement kit will give you everything you need for a proper repair.   Includes :   Lower valve cover gaskets Injector cup o-rings Injector cup sealant Return line seals Injector o-rings and Coppers FICM seals Up..
$139.64
Brand: Merchant Automotive Part Number: 10014
A small amount of this red sealant goes at the bottom of each injector cup to ensure proper sealing.   To see the proper location of the sealant see image below. Merchant Automotive part number: 10014..
$6.08
Brand: Merchant Automotive Part Number: 3-1129G
A great compliment to our heavy duty motor mounts. Keep your drive line in place.Fits Allison 2001-2010 and ZF6 2001-2006. Unique Safety Interlock Design Impervious To Vehicle Oils And Chemicals Strong Enough Too Handle High Performance Merchant part number: 3-1129G..
$98.95
Brand: Merchant Automotive Part Number: 10033
Replace damaged injector cup o-rings to ensure no coolant contamination into the engine oil.  Damaged seals will allow cross contamination. This is for a pack of 16 o-rings. Merchant Automotive part number: 10033..
$13.88
Brand: Merchant Automotive Part Number: 10056
Those of you that move your torsion bars up and down for competition use may find that over time the bolt will strip out.  A coating of anti-seize will help prolong the life, but inevitably the bolt will wear out.  Replace them with new pieces at the first sign of trouble to prevent the likely hood ..
$27.18
Brand: Merchant Automotive Part Number: 10543
Includes flywheel lock, all gaskets, and o-rings for installation. The seal between housing and gasket is installed. Bolts are torqued. Some existing hardware will be re-used. Fitment: Chevrolet  2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016GMC 2500HD 3500Chevy 06 07 08 09 10 11 12 13 14 ..
$241.19
Brand: Merchant Automotive Part Number: 10193
Duramax Performance Transfer Case Oil Promotes transfer case performance Increases shifting performance Dramatically reduces wear Increases component efficiencies               Blended specifically for use in GM transfer cases May be used in GM, Ford and Chrysler transfer cases For use..
$37.39
Brand: Merchant Automotive Part Number: 10521
Deluxe Injector Removal Tool, LLY, LBZ, LMM, 2004.5-2010 Pulls injector straight Pulls injector completely out of head Puller reduces the potential for Injector and head damage Tool is designed to remove injectors on 2005 to 2010 LLY, LBZ and LMM engines.  Heavy carbon buildup on the head an..
$138.18
Brand: Merchant Automotive Part Number: 331304A
Heavy duty gasket, will not rip or tear like less expensive gaskets.   Merchant Automotive part #331304A..
$6.03
Brand: Merchant Automotive Part Number: 13939
Valve Guide Seal, LB7/LLY/LBZ/LMM/LML, 2001+ DuramaxDURAMAX Valve Guide Seal-32 per engine-16 per head Part number: 13939..
$2.18
Brand: Merchant Automotive Part Number: 10428
Have a truck that does not seem to heat up? A lot of times this problem is caused by worn out thermostats.Kit Includes: Thermostat - Rear 180 Degrees Thermostat- Front 185 Degrees Upper Radiator Pipe Seal Oil Fill Tube Seal Merchant Automotive part number: 10428..
$130.88
Brand: Merchant Automotive Part Number: 10019
Those of you that move your torsion bars up and down for competition use may find that over time the bolt will strip out.  A coating of anti-seize will help prolong the life, but inevitably the bolt will wear out.  Replace them with new pieces at the first sign of trouble to prevent the likely hood ..
$41.89
Brand: Merchant Automotive Part Number: 10803
New injectors updated to meet Merchant Automotive specifications with no Core Charge! Covered by a 12 month / unlimited mile warranty! Merchant Automotive uses a New injector and then has them updated to our specifications. They include the new chrome plated ball seat for corrosion and wear resistan..
$4,638.53
Brand: Merchant Automotive Part Number: 29535617
Allison installed a disk type magnet that mounts on top of the external spin on filter to catch metallic debris.  Its very common for this magnet to get overlooked when servicing as it tends to stick to the top of the filter, only to get thrown away with the old filter.   This is t..
$15.17
Brand: Merchant Automotive Part Number: 10006
Its a tight fit to squeeze a filter wrench around the fuel filter with the newer longer filters.  GM designed a step in the bottom of the can to help with the problem, but its still very tight, especially with the wires routed close to it. After being frustrated with this, We developed a rather si..
$21.97
Brand: Merchant Automotive Part Number: 10491
MA Heavy Duty Injector Return Line Bolts at the Injector, LB7, 2001-2004 Price is for single bolt. Eight are needed to replace all fuel line bolts.With the shallow head on the stock bolt, it is common for the head to round out during removal. The MA Heavy Duty LB7 Injector Return Line Bolt has been..
$15.95
Brand: Merchant Automotive Part Number: 10772
Repair your transfer case with out any hassle.  Dont get into the job and realize your missing something.  Includes everything you need to do a proper repair on your transfer case effected by "pump rub"   Included in this package :   Merchant Automotive Transfer Case Pump Upgrade Kit Ne..
$545.52
Brand: Merchant Automotive Part Number: 10002
Merchant designed this wrench in 2004 after seeing the need.  Merchant wanted  something better then the traditional pair of pliers to remove the delicate plastic sensor during fuel filter servicing.  The wrench is precision machined from T-6061 Aluminum and tolerances are kept to a tight spec to ev..
$24.72
Brand: Merchant Automotive Part Number: 25900
BenefitsDirect ReplacementCast To OEM SpecsGreat For Pump Rub Prevention/RepairNo Core ChargeFeaturesCast In MagnesiumSlip Yoke Pushing And Driven Sprocket Support Bearing IncludedIncludes Limited Lifetime Warranty Against Pump RubFits 2001-2007 Duramax Diesel Engine Trucks W/ an Allison Transmissio..
$766.22
Brand: Merchant Automotive Part Number: 400552
Injector Return Line Right, 2004.5-2010 Duramax, LLY, LBZ, LMMMerchant part number: 400552..
$72.53
Brand: Merchant Automotive Part Number: J00322
OEM Replacement return line retainer clip.Single clip only. Part number: J00322GM part number: 97359750 ..
$10.17
Brand: Merchant Automotive Part Number: 402097
Injector Return Line Left, 2004.5-2010 Duramax, LLY, LBZ, LMMMerchant part number: 402097..
$72.53
Brand: Merchant Automotive Part Number: 10195
Fits '07.5-10 Allison 4x4 Transmissions.  This support can keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft)...
$145.34
Brand: Merchant Automotive Part Number: 10012
Its a well known fact that the GM inner tie rods are pretty wimpy.  Under extreme use they can bend or even break, leaving you stuck.  These easy to install sleeves thread onto the inner tie rod making it nearly impossible to break or bend.  Made from high quality 304 Stainless steel for long last..
$69.61
Brand: Merchant Automotive Part Number: 10306
Replace damaged injector cup o-rings to ensure no coolant contamination into the engine oil.  Damaged seals will allow cross contamination. This is for two (2) o-rings only. Merchant Automotive part number: 10306..
$1.92
Brand: Merchant Automotive Part Number: 10802
New injectors updated to meet Merchant Automotive specifications with no Core Charge! Covered by a 12 month / unlimited mile warranty! Merchant Automotive uses a New injector and then has them updated to our specifications. They include the new chrome plated ball seat for corrosion and wear resistan..
$3,684.46
Brand: Merchant Automotive Part Number: 26064030
Best practice to replace the pinion seal anytime it needs to be removed.  --OEM quality seal at a fraction of the price. Part number:  26064030..
$42.80
Brand: Merchant Automotive Part Number: 10184
Anytime an engine is used for higher RPM then stock or higher boost levels, there is a tremendous amount of stress on the pushrods, add an aftermarket cam with higher lift and some heavy duty valve springs and they are simply not sufficient.  Install our heavy duty pushrods that are made to the..
$345.62
Brand: Merchant Automotive Part Number: 10357
Fits '11-19 Allison 4x4 Transmissions.  This support can keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft)...
$123.04
Brand: Merchant Automotive Part Number: 10016
Comes as a package of two for a service of one engine. Part number: 10016...
$12.23
Showing 49 to 96 of 125 (3 Pages)