339+ 2018 Chevrolet Silverado 1500 Engine & Drivetrain High Country Parts

High Country · Engine & Drivetrain (316 products)

Exact-fit parts for the 2018 Chevrolet Silverado 1500 High Country.

Nitrous Express

Part # 15768

Confirmed Fit

Nitrous Express Solenoid Mounting Bracket for LS Engine Intake Manifold

$78.27

Eaton

Part # 19659-010

Confirmed Fit

Eaton ELocker Differential 30 Spline 1.31in Axle Shaft Dia 2.73 & Up Ratio Fr 8.5in/Rr 8.5in/8.6in

$1676.99

Cometic GM LS Gen-3/4 Camshaft Plate Gasket - With Recessed Bolts

Cometic Gasket

Part # C15031

Confirmed Fit

Cometic GM LS Gen-3/4 Camshaft Plate Gasket - With Recessed Bolts

$37.86

Granatelli 06-08 Chevrolet Corvette 8Cyl 6.0L MPG Plus Ignition Wires

Granatelli Motor Sports

Part # 38-1811MPG

Confirmed Fit

Granatelli 06-08 Chevrolet Corvette 8Cyl 6.0L MPG Plus Ignition Wires

$202.14

Nitrous Express

Part # 20935-15

Confirmed Fit

Nitrous Express GM LS 78mm 3-Bolt Nitrous Plate Kit (50-350HP) w/15lb Bottle

$1065.18

Nitrous Express

Part # NP934

Confirmed Fit

Nitrous Express 90mm 4 Bolt LS Nitrous Plate Only

$334.62

Sealed Power

Part # E-1023K

Fits with Conditions

Engine Piston Ring Set

$113.98

Granatelli 99-23 GM Truck/SUV V8 (Excl 8.1L) Hi-Perf Coil-Near-Plug Conn Kit w/9in Lead/Blk Jacket

Granatelli Motor Sports

Part # 28-1629HTB

Confirmed Fit

Granatelli 99-23 GM Truck/SUV V8 (Excl 8.1L) Hi-Perf Coil-Near-Plug Conn Kit w/9in Lead/Blk Jacket

$254.51

BBK 14-20 Chevrolet Camaro/Corvette 6.2L LT1 92mm Performance Throttle Body

BBK

Part # 1899

Confirmed Fit

BBK 14-20 Chevrolet Camaro/Corvette 6.2L LT1 92mm Performance Throttle Body

$629.75

Granatelli 96-22 GM LS Tall Valve Cover w/Angled Coil Mounts - Black Wrinkle (Pair)

Granatelli Motor Sports

Part # 640362

Confirmed Fit

Granatelli 96-22 GM LS Tall Valve Cover w/Angled Coil Mounts - Black Wrinkle (Pair)

$229.43

QA1 14-18 GM 1500 Spindle Pair 2in Drop For Steel & Alum

QA1

Part # 9056-113

Confirmed Fit

QA1 14-18 GM 1500 Spindle Pair 2in Drop For Steel & Alum

$722.61

Granatelli 14-18 GM LT1 Mass Airflow Sensor

Granatelli Motor Sports

Part # 350341

Confirmed Fit

Granatelli 14-18 GM LT1 Mass Airflow Sensor

$491.22

Camburg

Part # CAM-010171

Confirmed Fit

Camburg 2.0 Hub Seal Kit

$72.86

Nitrous Express

Part # 20935JP

Confirmed Fit

Nitrous Express GM LS 78mm 3-Bolt Nitrous Plate Kit Jet Pack 50-400 HP

$103.41

Westin

Part # 27-2145

Confirmed Fit

Westin 2014-2018 Chevrolet/GMC Silverado Sierra 1500 Dbl Crew Cab Running Board Mount Kit - Black

$119.04

Granatelli 14-23 GM LT Malevolent Coil Packs - Blue (Single)

Granatelli Motor Sports

Part # 28-0514-1BM

Confirmed Fit

Granatelli 14-23 GM LT Malevolent Coil Packs - Blue (Single)

$112.07

Nitrous Express

Part # 20933-12

Confirmed Fit

Nitrous Express GM LS 102mm Nitrous Plate Kit (50-400HP) w/12lb Composite Bottle

$1725.68

Dorman

Part # 929-725

Fits with Conditions

U-Bolt Repair Kit

$43.17

Accessory Drive Belt Tensioner - Original Equipment Quality

Litens

Part # 999545A

Fits with Conditions

Accessory Drive Belt Tensioner - Original Equipment Quality

$44.78

Granatelli 14-23 GM LT Malevolent Coil Packs - Red (Single)

Granatelli Motor Sports

Part # 28-0514-1RM

Confirmed Fit

Granatelli 14-23 GM LT Malevolent Coil Packs - Red (Single)

$112.07

Frequently Asked Questions

Do these parts fit my 2018 Chevrolet Silverado 1500 High Country?

This page groups parts listed for the 2018 Chevrolet Silverado 1500 High Country. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.

What engine & drivetrain options are available for my 2018 Chevrolet Silverado 1500 High Country?

We offer a wide selection of engine & drivetrain parts for the 2018 Chevrolet Silverado 1500 High Country. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.

What brands make parts for the 2018 Chevrolet Silverado 1500 High Country?

We carry parts from trusted brands including Granatelli Motor Sports, Nitrous Express, Yukon Gear & Axle, Fel-Pro, and COMP Cams, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 2018 Chevrolet Silverado 1500 High Country parts ship?

Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.

What warranty do your 2018 Chevrolet Silverado 1500 High Country parts come with?

Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.

2018 Chevrolet Silverado 1500(3,623 parts)

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Other Chevrolet Silverado 1500 Years

2018 Chevrolet Silverado 1500(3,623 parts)

Shop by Problem

Other Chevrolet Silverado 1500 Years

High Country · Engine & Drivetrain (316 products)

Nitrous Express Solenoid Mounting Bracket for LS Engine Intake Manifold

Eaton ELocker Differential 30 Spline 1.31in Axle Shaft Dia 2.73 & Up Ratio Fr 8.5in/Rr 8.5in/8.6in

Cometic GM LS Gen-3/4 Camshaft Plate Gasket - With Recessed Bolts

Granatelli 06-08 Chevrolet Corvette 8Cyl 6.0L MPG Plus Ignition Wires

Nitrous Express GM LS 78mm 3-Bolt Nitrous Plate Kit (50-350HP) w/15lb Bottle

Nitrous Express 90mm 4 Bolt LS Nitrous Plate Only

Engine Piston Ring Set

Granatelli 99-23 GM Truck/SUV V8 (Excl 8.1L) Hi-Perf Coil-Near-Plug Conn Kit w/9in Lead/Blk Jacket

BBK 14-20 Chevrolet Camaro/Corvette 6.2L LT1 92mm Performance Throttle Body

Granatelli 96-22 GM LS Tall Valve Cover w/Angled Coil Mounts - Black Wrinkle (Pair)

QA1 14-18 GM 1500 Spindle Pair 2in Drop For Steel & Alum

Granatelli 14-18 GM LT1 Mass Airflow Sensor

Camburg 2.0 Hub Seal Kit

Nitrous Express GM LS 78mm 3-Bolt Nitrous Plate Kit Jet Pack 50-400 HP

Westin 2014-2018 Chevrolet/GMC Silverado Sierra 1500 Dbl Crew Cab Running Board Mount Kit - Black

Granatelli 14-23 GM LT Malevolent Coil Packs - Blue (Single)

Nitrous Express GM LS 102mm Nitrous Plate Kit (50-400HP) w/12lb Composite Bottle

U-Bolt Repair Kit

Accessory Drive Belt Tensioner - Original Equipment Quality

Granatelli 14-23 GM LT Malevolent Coil Packs - Red (Single)

Frequently Asked Questions

Do these parts fit my 2018 Chevrolet Silverado 1500 High Country?

What engine & drivetrain options are available for my 2018 Chevrolet Silverado 1500 High Country?

What brands make parts for the 2018 Chevrolet Silverado 1500 High Country?

How fast do 2018 Chevrolet Silverado 1500 High Country parts ship?

What warranty do your 2018 Chevrolet Silverado 1500 High Country parts come with?