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Instruction Manuals

Here is a quick reference to our most popular guides and manuals: 

Duramax Valve Adustment Guide

Cognito Ball Joint SM Series Upper Control Arm Kit for 2011-2019 GM 2500HD/3500HD 2WD/4WD trucks

Harmonic Balancer Bolt

Transfer Case Pump Upgrade Kit 1998-2007

Transmission Line Repair Kit

LB7 Duramax HIGH IDLE KIT

LLY Duramax HIGH IDLE KIT

Automotive Fluid Analysis Sample Sheet

COMPACT ON-BOARD AIR KIT

AIR OPERATED LOCKING DIFFERENTIAL

 

  

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Merchant Automotive: the largest Duramax parts supplies in the world

Need parts for your Duramax diesel engine? Merchant Auto can help! Our team of trained Duramax and Allison transmission experts can help you with whatever you need for your Duramax diesel truck.