686+ 2018 GMC Sierra 3500 HD Engine & Drivetrain Base Parts - Page 10

Base · Engine & Drivetrain (683 products)

Exact-fit parts for the 2018 GMC Sierra 3500 HD Base.

National

Part # 710601

Fits with Conditions

Engine Crankshaft Seal

$35.76

ICON

Part # 89141532B

Confirmed Fit

ICON Alloys Lug Nut Kit Black - 14x1.5 - 32 Lug Nuts w/ Key

$77.34

Eaton

Part # 915A568

Confirmed Fit

Eaton Detroit Truetrac Differential 30 Spline Rear 11.5in

$1392.68

COMP Cams

Part # 875-1

Confirmed Fit

COMP Cams Lifter CS OE Drop-In Hydraulic Roller S

$41.95

COMP Cams

Part # 54-502-11

Confirmed Fit

COMP Cams Camshaft GM LS1 & LS6 XFI 286

$555.48

Banks Power

Part # 19259

Confirmed Fit

Banks Power 01-18 GM / RAM Natural Differential Cover Kit 11.5/11.8-14 Bolt

$434.11

Cometic GM LS1 SB 4.190in Bore .036in MLS Head Gasket

Cometic Gasket

Part # C5319-036

Confirmed Fit

Cometic GM LS1 SB 4.190in Bore .036in MLS Head Gasket

$97.74

COMP Cams

Part # 137022

Confirmed Fit

COMP Cams Rocker Arm Bearing LS-Type Re

$9.95

Nitrous Express

Part # 20934-12

Confirmed Fit

Nitrous Express GM LS 90mm Nitrous Plate Kit (50-400HP) w/12lb Composite Bottle

$1725.68

COMP Cams

Part # 19024-1

Confirmed Fit

COMP Cams Rocker Arm Ultra Gold Arc LS1

$70.71

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

COMP Cams

Part # 54-479-11

Confirmed Fit

COMP Cams Camshaft LS1 293LCB HR-116

$531.14

Wehrli

Part # WCF100432-GW

Confirmed Fit

Wehrli 2011-19 GM 2500/3500 HD Lower Splash Shield Kit - Gloss White

$306.18

Sealed Power

Part # H1505CPA

Fits with Conditions

Engine Piston Set

$63.56

Pioneer Cable

Part # DA-3510

Fits with Conditions

HARMONIC BALANCER

$101.94

ACL Bearings Engine Connecting Rod Bearing Set Race Series Performance, Chevrolet V8, 305-350

ACL

Part # 8B663H-010

Confirmed Fit

ACL Bearings Engine Connecting Rod Bearing Set Race Series Performance, Chevrolet V8, 305-350

$89.78

Nitrous Express

Part # 20934-05

Confirmed Fit

Nitrous Express GM LS 90mm Nitrous Plate Kit (50-400HP) w/5lb Bottle

$957.35

COMP Cams

Part # 1675-16

Confirmed Fit

COMP Cams Rocker Arms GM LS1 1.8 3/8 Ultra

$657.43

Accessory Drive Belt Tensioner - Original Equipment Quality

Litens

Part # 999366A

Fits with Conditions

Accessory Drive Belt Tensioner - Original Equipment Quality

$52.74

Cometic GM LS1 SB 4.160 inch Bore .027 inch MLS Head Gasket

Cometic Gasket

Part # C5318-027

Confirmed Fit

Cometic GM LS1 SB 4.160 inch Bore .027 inch MLS Head Gasket

$97.74

Frequently Asked Questions

Do these parts fit my 2018 GMC Sierra 3500 HD Base?

This page groups parts listed for the 2018 GMC Sierra 3500 HD Base. 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 GMC Sierra 3500 HD Base?

We offer a wide selection of engine & drivetrain parts for the 2018 GMC Sierra 3500 HD Base. 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 GMC Sierra 3500 HD Base?

We carry parts from trusted brands including COMP Cams, Cometic Gasket, King Engine Bearings, ACL, and Wehrli, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 2018 GMC Sierra 3500 HD Base 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 GMC Sierra 3500 HD Base 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 GMC Sierra 3500 HD(3,671 parts)

2018 GMC Sierra 3500 HD(3,671 parts)

Shop by Problem

Other GMC Sierra 3500 HD Years

Base · Engine & Drivetrain (683 products)

Engine Crankshaft Seal

ICON Alloys Lug Nut Kit Black - 14x1.5 - 32 Lug Nuts w/ Key

Eaton Detroit Truetrac Differential 30 Spline Rear 11.5in

COMP Cams Lifter CS OE Drop-In Hydraulic Roller S

COMP Cams Camshaft GM LS1 & LS6 XFI 286

Banks Power 01-18 GM / RAM Natural Differential Cover Kit 11.5/11.8-14 Bolt

Cometic GM LS1 SB 4.190in Bore .036in MLS Head Gasket

COMP Cams Rocker Arm Bearing LS-Type Re

Nitrous Express GM LS 90mm Nitrous Plate Kit (50-400HP) w/12lb Composite Bottle

COMP Cams Rocker Arm Ultra Gold Arc LS1

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

COMP Cams Camshaft LS1 293LCB HR-116

Wehrli 2011-19 GM 2500/3500 HD Lower Splash Shield Kit - Gloss White

Engine Piston Set

HARMONIC BALANCER

ACL Bearings Engine Connecting Rod Bearing Set Race Series Performance, Chevrolet V8, 305-350

Nitrous Express GM LS 90mm Nitrous Plate Kit (50-400HP) w/5lb Bottle

COMP Cams Rocker Arms GM LS1 1.8 3/8 Ultra

Accessory Drive Belt Tensioner - Original Equipment Quality

Cometic GM LS1 SB 4.160 inch Bore .027 inch MLS Head Gasket

Frequently Asked Questions

Do these parts fit my 2018 GMC Sierra 3500 HD Base?

What engine & drivetrain options are available for my 2018 GMC Sierra 3500 HD Base?

What brands make parts for the 2018 GMC Sierra 3500 HD Base?

How fast do 2018 GMC Sierra 3500 HD Base parts ship?

What warranty do your 2018 GMC Sierra 3500 HD Base parts come with?