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GMC SIERRA 2500 HD Parts and Accessories

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ACDelco Dex-Cool Antifreeze

ACDelco Dex-Cool antifreeze will keep your vehicle running at optimal temperatures. Extend the life of your water pump and other key systems by using a high-quality antifreeze from ACDelco.

4.93 out of 5 stars ( 30 )

$14.99

Mobil 1 Synthetic Gear Lubricant LS

Mobil 1 Synthetic Gear Lubricant LS is a superior, multipurpose automotive gear lube designed to meet high-level performance requirements—including limited-slip applications. The proprietary formulation of synthetic base oils combined with a unique additive system performs exceptionally across a wide range of temperatures, compared to conventional hypoid gear lubricants. Mobil 1 Synthetic Gear Lubricant LS will help protect against thermal and oxidative degradation, wear and corrosion, and viscosity loss associated with premature shearing. It will promote outstanding power transfer performance in some of the most severe driving conditions. Choose the oil weight recommended for your application.

5.0 out of 5 stars ( 35 )

$10.99

NGK Laser Iridium Spark Plugs

NGK Laser Iridium spark plugs feature laser-welded technology. Lasers are used to pinpoint precision welds, reducing excess debris; this decreases the required voltage to bridge the spark gap. An iridium disc is welded on the center electrode and a platinum disc is welded on the ground electrode, reducing the wear rate of both surfaces and ensuring great durability and long life. These spark plugs are available for use with a variety of engine types.

4.92 out of 5 stars ( 75 )

$10.99

$12.99

ACDelco GM Genuine Parts Engine Valve Lifter Guides

ACDelco GM Genuine Parts engine valve lifter guides keep the lifters from rotating. These GM-recommended replacements deliver peace of mind that the fit, form, and function are of the highest standards. Order the guides designed for your GM year/make and engine application.

5.0 out of 5 stars ( 5 )

$13.99

K&N Performance Gold Oil Filters

Get oil filtration that's as good as gold with K&N Performance Gold oil filters. Keep your engine free from contaminants as small as 10 microns. They use a resin-impregnated filter media to provide maximum filtering and an inner core to lend extra structural support to the filter, preventing filter collapse. Plus, many of these K&N oil filters have an anti-drainback valve (where applicable) that eliminates dry starts and prevents oil from draining back into the crankcase during engine shutdown. And they're protected by a heavy-duty outer shell that guards against rock and stone damage and provides over 550 psi hydrostatic burst strength. So, if you want golden-level oil protection, then you want K&N oil filters.

4.83 out of 5 stars ( 515 )

$15.99

$19.99

Red Line MTL Transmission Gear Oil

Red Line MTL transmission gear oil is a 75W80 GL-4 gear oil (SAE 5W30/10W30 engine oil viscosity) designed for use in manual transmissions and transaxles. MTL is a low 75W at very low temperatures, and a high 80W, nearly an 85W, at elevated temperatures, providing adequate viscosity to prevent wear and deaden gear noise. Overall, this gear oil offers excellent protection of gears and synchronizers, and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.

4.96 out of 5 stars ( 72 )

$20.00

NGK Iridium IX Spark Plugs

NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs—and just thin enough to create an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is the hardest metal used in spark plugs today—six times harder than platinum. This allowed NGK engineers to reduce the voltage requirement for a spark. Iridium IX plugs are available in more than a hundred configurations for universal and vehicle-specific applications.

4.86 out of 5 stars ( 251 )

$11.99

ACDelco GM Genuine Parts Engine Coolant Temperature Sensors

ACDelco GM Genuine Parts engine coolant sensors are a GM recommended replacement component for many vehicles on the road today. These original equipment engine coolant sensors are manufactured to fit your GM vehicle, providing you the same performance, durability, and service life you expect from General Motors.

4.68 out of 5 stars ( 72 )

$18.99

Mobil Super Synthetic Blend Motor Oil

Mobil Super synthetic blend motor oil is recommended for gasoline-filled automobiles and light-duty trucks. It offers proven protection to help extend the life of your engine by preventing the formation of sludge and harmful deposits. This provides outstanding wear protection under a wide variety of operating conditions, including the benefit of easier cold starting. Extend the life of your engine with Mobil Super synthetic blend motor oil. Order the weight recommended for your specific vehicle and engine size. Features and specs: * 5,000 mile protection guarantee * Contains 15 percent more cleaning additives than their basic synthetic blend motor oil * Meets or exceeds the latest industry specifications * Available in several viscosities * Available individually or in packs

4.92 out of 5 stars ( 38 )

$19.99

Melling Rocker Arms

Melling rocker arms, available for both domestic and import applications, meet or exceed OEM specifications. Depending on the OE design specifications, Melling rocker arms are provided in either stamped or cast materials. Built from only the best materials and manufacturing processes available, they are perfect replacements priced right for your budget. Melling recommends installing new rocker arms with every engine rebuild to assure long engine life and efficient performance. Answer the little knock under your hood with replacement rocker arms from Melling--a supplier of quality engine parts.

4.61 out of 5 stars ( 76 )

$12.99

$17.99

ACDelco Power Steering Fluid

ACDelco power steering fluid is important for protecting and ensuring the longevity of your power steering system. These hydraulic fluids transfer power in the steering system and are specially formulated to protect the components. With different varieties to suit most applications and environments, they'll keep your power steering system running quietly and efficiently for years to come. Reduce leaks, squeaks, and squeals by ordering the ACDelco power steering fluid formulated for your application.

4.94 out of 5 stars ( 18 )

$11.99

$12.99

Mahle Original Exhaust Gaskets

Leaks in the exhaust manifold produce bad exhaust valves, a loss of power, and increased fuel consumption. Mahle Original exhaust gaskets require metal beads where the gas passes through at very high temperatures and low pressure. These metal beads are reinforced with metal sheets to resist the component movement that arises from large fluctuations in temperature.

4.64 out of 5 stars ( 14 )

$18.99

Summit Racing™ LS Valve Cover Gasket Kits

Summit Racing™ LS valve cover gaskets are excellent options for your engine, especially if it's making high horsepower. Produced using premium materials, our gaskets ensure a leak-free seal for your LS build. Create a tight barrier to keep oil in and external elements out with Summit Racing™ LS valve cover gasket kits.

5.0 out of 5 stars ( 1 )

$17.99

ACDelco GM Genuine Parts Rocker Arms

ACDelco GM Genuine Parts rocker arms are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These are the true OE parts installed during the production of or validated by General Motors for GM vehicles. That means the purchase of ACDelco GM Genuine Parts rocker arms will provide the correct fit and performance, delivering an easier install along with the optimal operation in your vehicle. The rocker arms are offered in different styles, ratios, and mounting options. They're available for hundreds of applications.

5.0 out of 5 stars ( 2 )

$16.99

$17.99

King SI-Series Rod Bearings

King SI-Series rod bearings are recommended for OE applications. They're designed for aftermarket gasoline or diesel engine rebuilding and performance engines with OE crankshafts. These direct replacements have an improved finish for reducing microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. King SI-Series rod bearings also feature improved oil clearance to reduce wear and increase engine life—which, in turn, lessens operating noise, vibration, and excess oil flow. Hundreds of sets are available; order the bearings recommended for your vehicle.

4.55 out of 5 stars ( 97 )

$13.99

$16.99

Melling Valves

It's never a good idea to cut corners when you're installing new valves. Melling is noted for its world-class engineering, superior grade alloy materials, and advanced manufacturing processes. Melling intake and exhaust valves meet the exacting specifications required for efficient, durable, and powerful performance. They feature high-fatigue strength, excellent heat resistance, and offer years of dependable service. Available in a wide variety of designs and materials for most OEM and performance vehicle applications, each valve is built and validated to meet or exceed OE specifications. Melling valves—unsurpassed quality you can trust.

4.44 out of 5 stars ( 45 )

$12.99

NGK Ruthenium HX Spark Plugs

NGK Ruthenium HX spark plugs are designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) engineering promotes spark energy concentration and ignites a wider range of air/fuel ratios, offering improved performance in rich or lean engine conditions. Order the plugs recommended for fitment on your application. Additional details: * 0.4mm Ruthenium alloy fine-wire center electrode and 0.8mm platinum fine-wire ground electrode * Trivalent metal platinum provides superior anti-corrosion and anti-seizing properties * Corrugated ribs prevent flashover * Pure alumina silicate ceramic insulator offers superior strength and better heat transfer * Copper core aids in heat removal

4.89 out of 5 stars ( 37 )

$14.99

$17.99

Melling Factory Hydraulic Roller Lifters

Melling factory replacement hydraulic roller lifters are designed and built to get the job done while ensuring efficient performance and quiet valve train operation. They are perfect for when you're ready to freshen up your engine. Melling factory hydraulic roller lifters are manufactured from the finest materials and designed for the proper fit and long dependable lifter life.

4.25 out of 5 stars ( 20 )

$15.99

Summit Racing™ Header Bolts

Summit Racing™ offers header bolts for a variety of engine applications, from 1955 and up. These stainless steel fasteners have small 3/8 in. hex heads for use with a box end wrench and a 9/16 in. head flange that eliminates the need for washers. For rebuild, restoration, or swap, replacement bolts from Summit Racing™ will properly secure your header.

5.0 out of 5 stars ( 14 )

$13.99

Chevrolet Performance LS Rocker Arms

Get smooth valvetrain performance! Chevrolet Performance LS rocker arms install easily on your LS cylinder heads without any modifications. Add some additional horsepower and increase your rpm capability with a set of Chevrolet Performance LS rocker arms.

5.0 out of 5 stars ( 3 )

$16.99

Summit Racing™ Exhaust Manifold Gaskets

Summit Racing™ offers exhaust manifold gaskets in a wide range of sizes and port-style configurations. They feature a quality steel core laminate construction. These replacement seals can repair an exhaust manifold leak—or prevent it from happening in the first place. Order the pair recommended for your engine application.

4.7 out of 5 stars ( 23 )

$16.99

PowerStop Electronic Brake Wear Sensors

PowerStop has a reputation for precision and adherence to the strictest OEM standards. Extending those standards, PowerStop's electronic brake wear sensors are designed to meet the same form, fit, and function as the original OEM part. Brake wear sensors wear down with the pads and illuminate the brake pad wear indicator light/warning. When that happens, it's time to replace the brake pads as well as the sensors. PowerStop electronic brake wear sensors are designed to withstand high-temperatures, assure excellent electrode conductivity, and they will continue to work after thousands of miles, providing the safety and performance drivers count on.

4.2 out of 5 stars ( 5 )

$10.40

Melling Oil Pump Screen Assemblies

Melling oil pump screen assemblies are designed for use with your Melling oil pump. These replacement pickups have a built-in filter screen and are engineered to fit the stock pan and specs—and, in some cases, Street/Strip and Circle Track applications. Various installation methods are available, including bolt-in, press fit, and screw-in. Melling offers nearly 200 models; select the assembly tailored for fitment with your specific vehicle or engine.

4.54 out of 5 stars ( 378 )

$13.99

$17.99

ACDelco Pilot Bearings and Bushings

ACDelco transmission pilot bearings and bushings deliver the quality, durability, and reliability you expect. They facilitate less friction and longer life from the clutch assembly in your ride. These replacements are available in a variety of sizes, styles, and materials. Order the model recommended for your application.

4.72 out of 5 stars ( 40 )

$13.99