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LML Duramax Suspension and Driveline

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    Cognito 01-24 Chevy Silv/Sierra 2500/3500 HD / Ford F250/350 SD 4WD Carrier Bearing Spacer 3-4 Inch

    Cognito
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25

    Fits: 12 vehicle models, including 2001 to 2025 Chevrolet Silverado 2500 HD; 2001 to 2025 GMC Sierra 2500 HD; 2007 to 2025 Chevrolet Silverado 3500...

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    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25
  • Photo - Primary Photo - Primary

    Cognito 01-24 Chevy Silv/Sierra 2500/3500 HD / Ford F250/350 SD 4WD Carrier Bearing Spacer 2-3 Inch

    Cognito
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25

    Fits: 12 vehicle models, including 2001 to 2025 Chevrolet Silverado 2500 HD; 2001 to 2025 GMC Sierra 2500 HD; 2007 to 2025 Chevrolet Silverado 3500...

    View full details
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25
  • Photo - Primary Photo - Primary

    Cognito 11-25 Chevrolet Silverado 2500/3500HD / 11-25 GMC Sierra 2500/3500HD Steering Idler Arm

    Cognito
    $367.15 - $367.15
    $367.15
    $367.15 - $367.15
    $367.15

    For model years 2011–2014 and most of 2015, GM included OEM provisions for a steering stabilizer, requiring two mounting points: one on the right s...

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    $367.15 - $367.15
    $367.15
    $367.15 - $367.15
    $367.15
  • Photo - Close Up Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Ball Joint SM Series UCA Kit

    Cognito
    $699.98 - $699.98
    $699.98
    $699.98 - $699.98
    $699.98

    Fits as stock replacement or leveled and lifted applications where an upgrade is desired to provide better performance, style, and function.The Cog...

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    $699.98 - $699.98
    $699.98
    $699.98 - $699.98
    $699.98
  • Photo - Primary Photo - Primary

    Cognito 11-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Supersteer Idler Arm Support

    Cognito
    $267.45 - $267.45
    $267.45
    $267.45 - $267.45
    $267.45

    Looseness or Steering Play in some vehicle steering systems can often be attributed to a component known as a bell crank or idler, which supports t...

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    $267.45 - $267.45
    $267.45
    $267.45 - $267.45
    $267.45
  • Photo - Primary Photo - Primary

    Cognito 11-24 Chevy/GMC Silv/Sierra 2500/3500 HD 2WD/4WD Forged Pitman Idler Arm Support Kit

    Cognito
    $259.95 - $259.95
    $259.95
    $259.95 - $259.95
    $259.95

    Pitman and Idler arms have been an inherent wear problem within the steering systems of Chevy and GMC trucks and SUVs for decades.The Cognito PISK ...

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    $259.95 - $259.95
    $259.95
    $259.95 - $259.95
    $259.95
  • Photo - Primary Photo - Primary

    Cognito 11-24 Chev Silv/Sierra 2500/3500 HD 2WD/4WD Enhance Plate Kit for SM Series Comp Strut Kit

    Cognito
    $229.95 - $229.95
    $229.95
    $229.95 - $229.95
    $229.95

    The Cognito Enhancement Plate Kit is made of 1/16 Inch stainless steel plates to show off your Cognito performance upgrade parts. These plates are ...

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    $229.95 - $229.95
    $229.95
    $229.95 - $229.95
    $229.95
  • Photo - Primary Photo - Primary

    Cognito 11-25 Chevy/GMC Silv/Sierra 2500/3500 HD 2WD/4WD Idler Frame Support Gusset Kit

    Cognito
    $84.95 - $84.95
    $84.95
    $84.95 - $84.95
    $84.95

    This kit adds critical reinforcement to the idler support area of the frame, helping reduce flex and wear under load. Made from 1/4-inch plate stee...

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    $84.95 - $84.95
    $84.95
    $84.95 - $84.95
    $84.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD SM Series Compression Struts

    Cognito
    $669.95 - $669.95
    $669.95
    $669.95 - $669.95
    $669.95

    The Cognito SM Series heavy-duty (boxed Sheet Metal) construction and signature design, deliver both optimum performance and unique looks that will...

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    $669.95 - $669.95
    $669.95
    $669.95 - $669.95
    $669.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Ball Joint SM Series UCA Builders Kit

    Cognito
    $679.98 - $679.98
    $679.98
    $679.98 - $679.98
    $679.98

    This control arm kit is a 'Builders Kit' meaning the control arms are raw and un-assembled so a builder can custom powder coat the arms and then as...

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    $679.98 - $679.98
    $679.98
    $679.98 - $679.98
    $679.98
  • Photo - lifestyle view Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 3in Standard Leveling Kit

    Cognito
    $899.95 - $899.95
    $899.95
    $899.95 - $899.95
    $899.95

    We've bundled everything you need in a leveling kit for your 11-19 Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. There i...

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    $899.95 - $899.95
    $899.95
    $899.95 - $899.95
    $899.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 1.0in Front Shock Extender Kit

    Cognito
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    It will add 1 Inch to the length of the front shocks for leveling applications where Cognito upper control arms and OE shocks are used.This extende...

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    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 0.5in Front Shock Extender Kit

    Cognito
    $49.32 - $49.32
    $49.32
    $49.32 - $49.32
    $49.32

    It will add .5 Inch to the length of the front shocks for leveling applications where the OE upper control arm and shock is used.This extender kit ...

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    $49.32 - $49.32
    $49.32
    $49.32 - $49.32
    $49.32
  • responsive-image responsive-image

    Fox 2011+ GMC Sierra 2500/3500 HD 0-1in Lift Rear 2.5 Performance Series Smooth Body IFP HTO Shock

    FOX
    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95

    FOX 2.5 Performance Series HTO shock is a bolt-on shock loaded with position-sensitive technology, vehicle-specific valving, and larger pistons to ...

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    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95
  • responsive-image responsive-image

    Fox 2011+ GMC Sierra 2500 HD 1.5-2.5in Lift Rear 2.5 Performance Series Smooth Body IFP HTO Shock

    FOX
    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95

    FOX 2.5 Performance Series HTO shock is a bolt-on shock loaded with position-sensitive technology, vehicle-specific valving, and larger pistons to ...

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    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95
  • Technical Drawing Photo - Primary Save 20% Save %

    afe aFe POWER Differential Cover GM Trucks 99-13

    aFe
    $372.50
    $372.50 - $372.50
    $372.50
    $298.00
    $298.00 - $298.00
    $298.00

    aFe Model 46-70370aFe Power's new rear differential cover brings performance engineering to the protection of your axle's differential. This differ...

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    $372.50
    $372.50 - $372.50
    $372.50
    $298.00
    $298.00 - $298.00
    $298.00
    Save 20% Save %
  • Photo - Primary Photo - Primary

    ATS Diesel 01+ GM / 03+ Dodge 14-Bolt 11.5in American Axle ATS Protector Rear Differential Cover

    ATS Diesel
    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99

    Fits: 15 vehicle models, including 2001 to 2005, 2007 to 2014 Chevrolet Silverado 2500 HD; 2001 to 2005, 2007 to 2014 GMC Sierra 2500 HD; 1999 to 2...

    View full details
    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99
  • responsive-image responsive-image

    Fox 2.5 HTO Performance Series Rear Shock (single) 0"-1" 2011-2025

    Kryptonite
    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95

    Kryptonite Model KRS4009Fits; 2011-2025 Chevrolet/GMC 2500/3500 HD Part# KRS4009 *Sold Individually DESCRIPTION Fox direct replacement shocks ...

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    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95
  • responsive-image responsive-image

    Fox 2.5 HTO Performance Series Front Shock (single) 0"-2.5" 2011-2025

    Kryptonite
    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95

    Kryptonite Model KRS4010Fits; 2011-2025 Chevrolet/GMC 2500/3500 HD Part# KRS4010 *Sold Individually DESCRIPTION Fox direct replacement shocks ...

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    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95
  • Photo - Mounted Photo - Primary Save 20% Save %

    aFe Power Front/Rear Diff Cover Kit w/ Oil 11-19 GM Diesel Trucks V8 (AAM 9.25-12 & AAM 11.5-14)

    aFe
    $1,088.75
    $1,088.75 - $1,088.75
    $1,088.75
    $871.00
    $871.00 - $871.00
    $871.00

    aFe Model 46-7707ABaFe Power’s Pro Series front and rear differential covers bring performance-driven protection to your drivetrain. Constructed fr...

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    $1,088.75
    $1,088.75 - $1,088.75
    $1,088.75
    $871.00
    $871.00 - $871.00
    $871.00
    Save 20% Save %
  • Logo Image Photo - Primary

    Fox 11-25 GMC Sierra 2500/3500 HD 2.5 Performance Series 5.1in Lift Smooth Body IFP HTO Shock

    FOX
    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95

    FOX Model 987-24-036Increase your vehicle's off-road capability by extending drop-out travel in most applications. Experience on-road comfort with ...

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    $359.95 - $359.95
    $359.95
    $359.95 - $359.95
    $359.95
  • User 4 User 6

    Air Lift LoadLifter 7500 XL Ultimate Air Spring Kit 16-25 Chevy/GMC Silverado/Sierra 3500HD

    Air Lift
    $797.99 - $797.99
    $797.99
    $797.99 - $797.99
    $797.99

    Air Lift Model 57543The Air Lift 7500 XL Ultimate kit offers maximum load-leveling power for your Silverado or Sierra 3500—engineered for confidenc...

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    $797.99 - $797.99
    $797.99
    $797.99 - $797.99
    $797.99
  • User 1 Photo - Primary Save 24% Save %

    Firestone 11-24 Chevrolet Silverado 2500 2WD/4WD AIO Analog Ride-Rite All-In-One Kit (W217602873)

    Firestone
    $1,397.60
    $1,397.60 - $1,397.60
    $1,397.60
    $1,063.37
    $1,063.37 - $1,063.37
    $1,063.37

    Firestone Model 2873Firestone's original helper spring kit is designed to level loads when you are hauling or towing to eliminate squat and return ...

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    $1,397.60
    $1,397.60 - $1,397.60
    $1,397.60
    $1,063.37
    $1,063.37 - $1,063.37
    $1,063.37
    Save 24% Save %
  • aFe 011-16 GM Diesel Trucks V8-6.6L LML Engine Oil Pan Black POWER Pro Series w/ Machined Fins. aFe 011-16 GM Diesel Trucks V8-6.6L LML Engine Oil Pan Black POWER Pro Series w/ Machined Fins. Save 20% Save %

    aFe 011-16 GM Diesel Trucks V8-6.6L LML Engine Oil Pan Black POWER Pro Series w/ Machined Fins

    aFe
    $477.50
    $477.50 - $477.50
    $477.50
    $382.00
    $382.00 - $382.00
    $382.00

    aFe Model 46-71080BaFe Power oil pans are constructed out of durable cast aluminum with machined fins for maximum strength and styling. This cover ...

    View full details
    $477.50
    $477.50 - $477.50
    $477.50
    $382.00
    $382.00 - $382.00
    $382.00
    Save 20% Save %

LML Duramax suspension and driveline for 2011 to 2016 Chevy Silverado HD and GMC Sierra HD trucks.

Leveling kits, lift kits, shocks, traction bars, control arms and driveline parts to fit bigger tires, level the truck or improve how it tows.

Related: LML wheels and tires, LML steering parts, LML exterior. Browse all LML Duramax parts.

Not sure what fits? Send us your VIN and we will match the right part.