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.

 

 

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993 products

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  • Aeromotive 05-18 Chevrolet Silverado 340 Single Drop-In Phantom System 18356

    Regular price $916.80 USD
    Regular price Sale price $916.80 USD
    Aeromotive 340 single drop-in fuel pump kit for Chevrolet Silverado 2005-2018, complete Phantom system with brand identification.
  • Aeromotive 05-18 Chevrolet Silverado 340 Dual Drop-In Phantom System 18357

    Regular price $1,143.60 USD
    Regular price Sale price $1,143.60 USD
    Aeromotive 340 dual drop-in Phantom system installed in 2005-2018 Chevrolet Silverado, shown on a Silverado engine bay.
  • Comp Cams Rocker Arms, "Ultra Gold" SBC 7/16" 1.5

    Regular price $247.10 USD
    Regular price Sale price $247.10 USD
    Comp Cams Ultra Gold SBC 7/16" 1.5 engine rocker arms from FR SPORT, showing shiny gold finish and detailed metal construction.
  • Comp Cams RETAINERS, TOOL STEEL FOR 26926 LS ONLY

    Regular price $278.00 USD
    Regular price Sale price $278.00 USD
    FR SPORT Comp Cams tool steel valve spring retainer set for LS engines, featuring high-quality retainers for engine performance.
  • Comp Cams Camshaft, GM LS SINGLE BOLT 277LrR HR-13

    Regular price $612.40 USD
    Regular price Sale price $612.40 USD
    FR SPORT GM LS engine camshaft, Comp Cams single bolt 277LrR HR-13 for high-performance automotive engine tuning.
  • Comp Cams Retainers, Lite Wt Tool Steel For Ls1

    Regular price $277.96 USD
    Regular price Sale price $277.96 USD
    Comp Cams lightweight tool steel engine valve spring retainers for LS1 engines, part of FR SPORT's valve component set.
  • Comp Cams Camshaft, Gm Ls Single Bolt 269lrr Hr-13

    Regular price $612.40 USD
    Regular price Sale price $612.40 USD
    FR SPORT GM LS single bolt engine camshaft, model 269LRR HR-13, with detailed metal finish and gear teeth visible.
  • Comp Cams High Energy Hydraulic Lifters Chevy Small & Big Block V8 CS CB

    Regular price $131.94 USD
    Regular price Sale price $131.94 USD
    FR SPORT Comp Cams High Energy Hydraulic Lifter Kit for Chevy Small and Big Block V8 engines, showing lifters and components.
  • 6.5L GM Diesel Wastegate Solenoid Connector

    Regular price $9.95 USD
    Regular price Sale price $9.95 USD
    GMC Sierra Diesel Hub 6.5L GM diesel wastegate solenoid connector for vehicle engine repair.
  • 6.5L GM Diesel Glow Plug Connector Pigtail with Heat Sleeves

    Regular price $12.85 USD
    Regular price Sale price $12.85 USD
    Diesel Hub 6.5L GM diesel glow plug connector pigtail with heat sleeves, showing electrical connection and heat-resistant components.
  • 8 inch PMD Harness Extension for 6.5L Diesels

    Regular price $21.95 USD
    Regular price Sale price $21.95 USD
    8-inch PMD wiring harness extension for 6.5L diesel engines by Diesel Hub, showing the detailed electrical connectors and wiring.
  • 6.5L GM Diesel OPS Bypass/Fuel Pump Harness Upgrade

    Regular price From $140.00 USD
    Regular price Sale price From $140.00 USD
    Diesel Hub 6.5L GM Diesel OPS Bypass Fuel Pump Wiring Harness upgrade for improved fuel pump relay connection.
  • 6.6L Duramax Glow Plug Connector Pigtail

    Regular price $8.95 USD
    Regular price Sale price $8.95 USD
    Duramax glow plug connector pigtail for GMC Sierra and Canyon, Diesel Hub brand, showing the electrical connector in detail.
  • 6.5L GM Diesel Glow Plug Harness Extension

    Regular price $12.79 USD
    Regular price Sale price $12.79 USD
    Diesel Hub 6.5L GM diesel glow plug harness extension connector showing detailed view of the electrical connection.
  • 6.5L GM Diesel Fusible Link Glow Plug Harness Connector

    Regular price $8.97 USD
    Regular price Sale price $8.97 USD
    GMC Sierra Diesel Hub 6.5L GM diesel fusible link glow plug harness connector showing detailed electrical connection for engine.
  • Knock Sensor Wire Harness Kit with Intake Manifold Gasket for GM LS1, LS6 & LQ9 4.8L, 5.3L, 5.7L & 6.0L – OE# 12589867, 12601822

    Regular price $65.47 USD
    Regular price $0.00 USD Sale price $65.47 USD
    Gm Service Guy Knock Sensor Wire Harness Kit with intake manifold gasket for GM LS1, LS6, LQ9 engines, showing wiring and gasket components.