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.

 

 

993 products

993 products

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  • For Chevrolet Cruze Avalanche Impala Auto Transmission Shift Cable Linkage Bushing Rubber Repair Kit Gearbox Replacement Part

    Regular price From $13.00 USD
    Regular price $0.00 USD Sale price From $13.00 USD
    GM Service Guy Chevrolet Cruze Avalanche Impala auto transmission shift cable linkage rubber repair bushing replacement part
  • 10PC For Chevrolet Cruze Avalanche Suburban Tahoe Transmission Shift Cable Linkage Bushing Rubber Repair Kit Gearbox Replacement

    Regular price $17.02 USD
    Regular price $0.00 USD Sale price $17.02 USD
    GM Service Guy 10-piece Chevrolet Cruze, Avalanche, Suburban, Tahoe transmission shift cable linkage rubber repair kit with bushings
  • 8pcs Spark Plug Wire Ignition Cables M8-48322 for Chevrolet Avalanche Corvette Express Silverado,for Savana Sierra Yukon

    Regular price $55.26 USD
    Regular price $0.00 USD Sale price $55.26 USD
    Gm Service Guy 8-piece spark plug wire ignition cables set for Chevrolet Avalanche, Corvette, Silverado, Yukon, Sierra, Savana vehicles.
  • Vapor Canister 22963841,911-199,12573649 For Cadillac, Chevy, GMC Escalade, Avalanche, Suburban 1500, Yukon XL 1500, Hummer H2

    Regular price $64.74 USD
    Regular price $0.00 USD Sale price $64.74 USD
    GM Service Guy vapor canister for Cadillac, Chevy, GMC, Hummer H2; black plastic canister with hoses and fittings.
  • 8Pcs Fuel Injectors Nozzle 12613412 for Chevrolet Avalanche Express Silverado Tahoe Suburban GMC Savana Sierra Yukon

    Regular price $73.80 USD
    Regular price $0.00 USD Sale price $73.80 USD
    Set of 8 GM fuel injectors nozzles for Chevrolet Avalanche, Silverado, Tahoe, GMC Sierra, Yukon, and Savana vehicles.
  • 12703627 Crankshaft Position Sensor For Cadillac Chevrolet GMC Buick Pontiac G8 Grand Prix Hummer Saab 9-7x 12585546

    Regular price $34.60 USD
    Regular price $0.00 USD Sale price $34.60 USD
    GM Service Guy crankshaft position sensor for Cadillac, Chevrolet, GMC, Buick, Pontiac, Saab 9-7x, and Hummer vehicles.
  • Transmission Master Rebuild Kit FOR Cadillac 1994-ON 4L60E Component Set

    Regular price $994.11 USD
    Regular price $0.00 USD Sale price $994.11 USD
    Gm Service Guy transmission rebuild kit for Cadillac 4L60E, includes components for 1994 and newer models, detailed set image
  • Crankcase Ventilation Valve With PCV Vent For Cadillac Buick 12663027 12637666

    Regular price $26.39 USD
    Regular price $0.00 USD Sale price $26.39 USD
    GM Service Guy crankcase ventilation valve with PCV vent for Cadillac and Buick, part numbers 12663027 and 12637666, close-up view
  • DD for 12636947 Buick Chevrolet Crankshaft Position Sensor 12636947

    Regular price $15.71 USD
    Regular price $0.00 USD Sale price $15.71 USD
    GM Service Guy crankshaft position sensor for Buick and Chevrolet, part number 12636947, shown in a close-up image.
  • Oxygen Sensor For Buick Chevrolet Malibu Orlando Impala Pontiac Buick LaCrosse Regal 2.4L Vauxhall Opel Astra OEM# 12617648

    Regular price $36.13 USD
    Regular price $0.00 USD Sale price $36.13 USD
    GM Service Guy oxygen sensor for Buick Chevrolet Malibu Opel Astra Impala LaCrosse Regal Vauxhall 2.4L OEM# 12617648
  • 10x 12617648 Oxygen Sensor For Buick Chevrolet Malibu Orlando Impala Pontiac Buick LaCrosse Regal 2.4L Vauxhall Opel Astra

    Regular price $157.22 USD
    Regular price $0.00 USD Sale price $157.22 USD
    GM Service Guy 10x oxygen sensors for Buick Chevrolet Opel Vauxhall Malibu Impala LaCrosse Astra 2.4L engine replacement parts
  • For Escalade Tahoe Yukon 4WD 2000-2008 4.8L 5.3L 6.2L V8 946-052 Rear Driveshaft Drive shaft drive shaft

    Regular price $296.67 USD
    Regular price $0.00 USD Sale price $296.67 USD
    Gm Service Guy rear driveshaft for 2000-2008 Cadillac Escalade, Tahoe, Yukon 4WD V8 engine, durable auto replacement part
  • 15055342 15055343 Heater Hose Connector: Fits for Cadillac Escalade, for Chevy Tahoe/ for Silverado,for GMC Sierra/for Yukon

    Regular price $41.43 USD
    Regular price $0.00 USD Sale price $41.43 USD
    GMC Yukon and Yukon XL heater hose connector by Gm Service Guy, compatible with Cadillac Escalade, Chevy Tahoe, Silverado, and GMC Sierra
  • 16212460 MAP Manifold Pressure Sensor For Chevrolet Cavalier Classic Equinox Buick Terraza GMC Canyon Pontiac Isuzu Saturn Saab

    Regular price $27.32 USD
    Regular price $0.00 USD Sale price $27.32 USD
    GM Service Guy MAP manifold pressure sensor for Chevrolet Cavalier, Equinox, Buick Terraza, GMC Canyon, Saturn, Saab, Isuzu, Pontiac
  • MS96857 Intake Manifold Gasket For Chevrolet Cadillac GM 6.2L 6.0L 5.3L

    Regular price $34.93 USD
    Regular price $0.00 USD Sale price $34.93 USD
    GM Service Guy intake manifold gasket for Chevrolet and Cadillac 6.2L, 6.0L, 5.3L engines, shown in the image.
  • Ambient Air Temperature Sensor for Chevrolet Camaro Cruze Malibu for GMC Acadia 2017 13583411

    Regular price $16.51 USD
    Regular price $0.00 USD Sale price $16.51 USD
    Gm Service Guy ambient air temperature sensor for Chevrolet Camaro, Cruze, Malibu, GMC Acadia 2017 model, showing sensor component.