Collection: AFTERMARKET ENGINE & TRANSMISSION ACCESSORIES

Premium Aftermarket Accessories for GM Engine and Transmission

Upgrade your vehicle’s performance with high‑quality aftermarket engine and transmission accessories designed for durability, precision, and power. From performance intakes and cooling components to upgraded clutches, torque converters, sensors, and mounts, our products help drivers get more reliability and responsiveness out of every ride.

Whether you’re restoring a classic, building a track-ready setup, or just improving daily drivability, our selection delivers enhanced horsepower, smoother shifting, better heat management, and longer component life. We focus on trusted brands, proven engineering, and parts that fit right the first time—so you can maintain, customize, or optimize your vehicle with confidence.

 

Enhance Performance with GM Engine Components

 

 

Aftermarket accessories designed for your GM engine can significantly improve overall vehicle performance and reliability. Whether you seek better fuel efficiency or increased horsepower, compatible engine parts offer tailored solutions for maintenance and upgrades. Choosing high-quality GM engine accessories ensures seamless fitment and durability, helping your vehicle perform at its best for longer periods. These components are engineered to meet or exceed OEM specifications, offering peace of mind while optimizing your engine’s power and longevity on the road.

 

 

Durable and Efficient GM Transmission Parts

 

 

Maintaining or upgrading your GM transmission with aftermarket accessories provides improved shifting smoothness and enhanced transmission life. These parts are crafted for durability and precision, ensuring reliable power transfer from engine to wheels. Selecting the right GM transmission accessories helps prevent costly repairs by reducing wear and tear. OEM-quality alternatives offer a cost-effective way to keep your transmission running efficiently without sacrificing performance or compatibility with your vehicle’s systems.

 

 

Benefits of Upgrading Your Engine and Transmission

 

 

Upgrading both your engine and transmission with aftermarket accessories can greatly improve your vehicle’s responsiveness and fuel economy. Well-selected parts contribute to reduced mechanical stress and heat generation, extending the lifespan of critical components. Such enhancements not only boost driving enjoyment but also preserve the value of your vehicle. By investing in quality GM engine and transmission accessories, you ensure your vehicle performs reliably, maintains smooth operation, and meets the demands of everyday driving and performance needs alike.

 

 

 

Enhance Performance with GM Engine Components

 

 

Aftermarket accessories designed for your GM engine can significantly improve overall vehicle performance and reliability. Whether you seek better fuel efficiency or increased horsepower, compatible engine parts offer tailored solutions for maintenance and upgrades. Choosing high-quality GM engine accessories ensures seamless fitment and durability, helping your vehicle perform at its best for longer periods. These components are engineered to meet or exceed OEM specifications, offering peace of mind while optimizing your engine’s power and longevity on the road.

 

 

Durable and Efficient GM Transmission Parts

 

 

Maintaining or upgrading your GM transmission with aftermarket accessories provides improved shifting smoothness and enhanced transmission life. These parts are crafted for durability and precision, ensuring reliable power transfer from engine to wheels. Selecting the right GM transmission accessories helps prevent costly repairs by reducing wear and tear. OEM-quality alternatives offer a cost-effective way to keep your transmission running efficiently without sacrificing performance or compatibility with your vehicle’s systems.

 

 

Benefits of Upgrading Your Engine and Transmission

 

 

Upgrading both your engine and transmission with aftermarket accessories can greatly improve your vehicle’s responsiveness and fuel economy. Well-selected parts contribute to reduced mechanical stress and heat generation, extending the lifespan of critical components. Such enhancements not only boost driving enjoyment but also preserve the value of your vehicle. By investing in quality GM engine and transmission accessories, you ensure your vehicle performs reliably, maintains smooth operation, and meets the demands of everyday driving and performance needs alike.

 

 

668 products

668 products

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  • LT1 Hi-Ram, Lower Manifold Only w/out Port EFI Provisions. Order Plenum Top Separately.

    Regular price $673.95 USD
    Regular price $843.95 USD Sale price $673.95 USD
    LT1 Hi-Ram, Lower Manifold Only w/out Port EFI Provisions. Order Plenum Top Separately.
    Sale
  • LS Hi-Ram EFI Manifold GM LS1/LS2/LS6 - 92MM Throttle Body

    Regular price $1,059.95 USD
    Regular price $1,325.95 USD Sale price $1,059.95 USD
    LS Hi-Ram EFI Manifold GM LS1/LS2/LS6 - 92MM Throttle Body
    Sale
  • LSX Main Harness Connector Kit

    Regular price $148.72 USD
    Regular price $182.95 USD Sale price $148.72 USD
    LSX Main Harness Connector Kit
    Sale
  • LS2/3/7+ (58x/4x) Engine Main Harness

    Regular price $583.95 USD
    Regular price $731.95 USD Sale price $583.95 USD
    LS2/3/7+ (58x/4x) Engine Main Harness
    Sale
  • Idle Air Control (IAC) Motor for 85/90/92/102mm Sniper and 90/95/105mm Holley Throttle Bodies

    Regular price $121.18 USD
    Regular price $112.95 USD Sale price $121.18 USD
    Idle Air Control (IAC) Motor for 85/90/92/102mm Sniper and 90/95/105mm Holley Throttle Bodies
  • HP Smart Coil Ignition Harness

    Regular price $258.25 USD
    Regular price $322.95 USD Sale price $258.25 USD
    HP Smart Coil Ignition Harness
    Sale
  • Holley Sniper EFI BBD for 1971-1986 Jeep CJ - Shiny

    Regular price $1,399.95 USD
    Regular price $1,574.95 USD Sale price $1,399.95 USD
    Holley Sniper EFI BBD for 1971-1986 Jeep CJ - Shiny
    Sale
  • Holley Sniper EFI 2GC Large Bore - Classic Gold

    Regular price $1,349.95 USD
    Regular price $1,518.95 USD Sale price $1,349.95 USD
    Holley Sniper EFI 2GC Large Bore - Classic Gold
    Sale
  • Holley Sniper EFI 2GC Small Bore - Classic Gold

    Regular price $1,449.95 USD
    Regular price $1,631.95 USD Sale price $1,449.95 USD
    Holley Sniper EFI 2GC Small Bore - Classic Gold
    Sale
  • Holley Sniper EFI 2GC Large Bore Master Kit- Classic Gold

    Regular price $1,649.95 USD
    Regular price $1,856.95 USD Sale price $1,649.95 USD
    Holley Sniper EFI 2GC Large Bore Master Kit- Classic Gold
    Sale
  • Holley Sniper EFI Stealth 4500 - Black

    Regular price $2,199.95 USD
    Regular price $2,474.95 USD Sale price $2,199.95 USD
    Holley Sniper EFI Stealth 4500 - Black
    Sale
  • Holley Lo-Ram Manifold Base and Fuel Rails Single Fuel Injector GM LS3/L93

    Regular price $673.95 USD
    Regular price $843.95 USD Sale price $673.95 USD
    Holley Lo-Ram Manifold Base and Fuel Rails Single Fuel Injector GM LS3/L93
    Sale
  • Holley Intake Manifold Adapter Plates

    Regular price $307.95 USD
    Regular price $461.95 USD Sale price $307.95 USD
    Holley Intake Manifold Adapter Plates
    Sale
  • Holley EFI Terminator X Stealth 4150 Secondary Throttle Body - Gold

    Regular price $1,013.95 USD
    Regular price $1,267.95 USD Sale price $1,013.95 USD
    Holley EFI Terminator X Stealth 4150 Secondary Throttle Body - Gold
    Sale
  • Holley Smart Coil Remote Coil Relocation Brackets

    Regular price $218.65 USD
    Regular price $273.95 USD Sale price $218.65 USD
    Holley Smart Coil Remote Coil Relocation Brackets
    Sale
  • Holley Lo-Ram Manifold Kit Dual Injector- Black - GM LS3/L92

    Regular price $1,168.95 USD
    Regular price $1,462.95 USD Sale price $1,168.95 USD
    Holley Lo-Ram Manifold Kit Dual Injector- Black - GM LS3/L92
    Sale