146+ 1999 GMC K1500 Cooling System Sierra SLT Parts - Page 2

Sierra SLT · Cooling System (146 products)

Exact-fit parts for the 1999 GMC K1500 Sierra SLT.

Holstein Parts

Part # 2CTS0001

Fits with Conditions

Holstein Parts 2CTS0001 Engine Coolant Temperature Sensor

$10.09

Dayco

Part # DP957

Fits with Conditions

WATER PUMP-AUTO/LIGHT TRUCK, DAYCO

$55.96

Molded Heater Hose 20R3EC Class D1 and D2

ContiTech

Part # 63348

Fits with Conditions

Molded Heater Hose 20R3EC Class D1 and D2

$21.33

Fel-Pro

Part # ES73030

Confirmed Fit

Fel-Pro Chevrolet K1500 Engine Water Pump Gasket Kit

$9.88

NGK

Part # EF0074

Confirmed Fit

NTK Engine Coolant Temperature Sensor

$18.00

Gates

Part # 31516

Fits with Conditions

Safety Release Radiator Cap

$12.90

Fel-Pro

Part # 5152

Confirmed Fit

Fel-Pro 75-86 Chevrolet C10/88-99 C1500/69-05 Blazer/75-86 K5 Blazer Engine Water Pump Gasket

$1.56

Onix

Part # OR2317

Fits with Conditions

Radiator

$159.55

Four Seasons

Part # 73656

Fits with Conditions

HVAC Air Door Actuator

$61.39

Dorman

Part # 902-754

Fits with Conditions

Engine Coolant Thermostat Housing

$22.47

Denso

Part # 221-9046

Fits with Conditions

Radiator

$182.99

Gates

Part # 19023

Confirmed Fit

Gates 1997 Chevrolet C & K Series Pickup V-8 5.7L Aux Heater Pipe-2 To Aux Heater Molded Heater Hose

$39.39

Spectra Premium

Part # CU624

Fits with Conditions

Radiator

$167.24

MAHLE Original Am General Hummer 98-94 Thermostat Seal

Victor Reinz

Part # C31273

Confirmed Fit

MAHLE Original Am General Hummer 98-94 Thermostat Seal

$14.41

Vernet

Part # TH6578.87J

Fits with Conditions

Engine Coolant Thermostat

$13.36

Gates

Part # 28479

Confirmed Fit

Gates 40inch L x 0.75inch ID -40 to 275 Deg F 90 Degree Molded Heater Hose

$17.96

Coolant Connector - Inlet/Outlet 3/4In. Tube x 5/8In. Hose

Dorman

Part # 800-409HP

Fits with Conditions

Coolant Connector - Inlet/Outlet 3/4In. Tube x 5/8In. Hose

$24.03

US Motor Works

Part # MCK1002

Fits with Conditions

Engine Water Pump and Fan Clutch

$116.15

Vernet

Part # THF1538.82

Fits with Conditions

Engine Coolant Thermostat

$12.22

High Flow Thermostat-160 Degrees w/ Seal

Motorad

Part # 2065-160

Fits with Conditions

High Flow Thermostat-160 Degrees w/ Seal

$11.66

Frequently Asked Questions

Do these parts fit my 1999 GMC K1500 Sierra SLT?

This page groups parts listed for the 1999 GMC K1500 Sierra SLT. 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 cooling system options are available for my 1999 GMC K1500 Sierra SLT?

We offer a wide selection of cooling system parts for the 1999 GMC K1500 Sierra SLT. 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 1999 GMC K1500 Sierra SLT?

We carry parts from trusted brands including Dorman, Gates, Four Seasons, Motorad, and Spectra Premium, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 1999 GMC K1500 Sierra SLT 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 1999 GMC K1500 Sierra SLT 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.

1999 GMC K1500(2,834 parts)

1999 GMC K1500(2,834 parts)

Shop by Problem

Other GMC K1500 Years

Sierra SLT · Cooling System (146 products)

Holstein Parts 2CTS0001 Engine Coolant Temperature Sensor

WATER PUMP-AUTO/LIGHT TRUCK, DAYCO

Molded Heater Hose 20R3EC Class D1 and D2

Fel-Pro Chevrolet K1500 Engine Water Pump Gasket Kit

NTK Engine Coolant Temperature Sensor

Safety Release Radiator Cap

Fel-Pro 75-86 Chevrolet C10/88-99 C1500/69-05 Blazer/75-86 K5 Blazer Engine Water Pump Gasket

Radiator

HVAC Air Door Actuator

Engine Coolant Thermostat Housing

Radiator

Gates 1997 Chevrolet C & K Series Pickup V-8 5.7L Aux Heater Pipe-2 To Aux Heater Molded Heater Hose

Radiator

MAHLE Original Am General Hummer 98-94 Thermostat Seal

Engine Coolant Thermostat

Gates 40inch L x 0.75inch ID -40 to 275 Deg F 90 Degree Molded Heater Hose

Coolant Connector - Inlet/Outlet 3/4In. Tube x 5/8In. Hose

Engine Water Pump and Fan Clutch

Engine Coolant Thermostat

High Flow Thermostat-160 Degrees w/ Seal

Frequently Asked Questions

Do these parts fit my 1999 GMC K1500 Sierra SLT?

What cooling system options are available for my 1999 GMC K1500 Sierra SLT?

What brands make parts for the 1999 GMC K1500 Sierra SLT?

How fast do 1999 GMC K1500 Sierra SLT parts ship?

What warranty do your 1999 GMC K1500 Sierra SLT parts come with?