1981 GMC K2500 Cooling and Heating Parts

2,617 products fit your

1981 GMC K2500

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1981 GMC K2500

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Steel 45 Degree -4 AN to 1/8 NPT Male Adapter Fitting

Speedway Motors |

#324962304

Steel 45 Degree -4 AN to 1/8 NPT Male Adapter Fitting

(3)

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

45 degree

$6.49

/each

-33%

Fragola |

#3249837031

Fragola 483703-BL -3AN X 45 Degree Bulkhead Adapter, Black

AN Size:

-3 AN

Angle:

45 degree

Fitting End A:

-3 AN Male

$11.49

/each

$17.18

Flex-A-Lite |

#359640

Flex-A-Lite 640 Mojave Universal Heater 117306

(4)

Overall Height:

5.00"

Sold in Quantity:

Each

$269.99

/each

-15%

Maradyne |

#359700

Maradyne M073K 6.5" 130W Electric Fan Puller Only

Fan Diameter:

6.5 Inch

Maximum Fan CFM:

375 CFM

Fan Flow Type:

Reversible

$106.81

/each

$125.66

-14%

Maradyne |

#359703

Maradyne M103K 10" 130W Reversible Electric Fan

(2)

Fan Diameter:

10 Inch

Maximum Fan CFM:

950 CFM

Fan Flow Type:

Reversible

$138.33

/each

$162.74

Car Cooling System Components

How does a cooling system work? Why is your engine overheating? What parts should you be giving your attention to? This guide answers all your questions.

Cooling a '46 Ford Sedan

In this Tech Tip, John offers some guidance to a customer looking to cool his 1946 Ford Sedan.

Keeping your 1955 Chevy Cool

Shortcuts don't always pay off. Zach Raddatz walk us through his experience with a cheap radiator so we don't make the same mistake!

Upgrading the Cooling System for a Small Block Chevy

Learn how to successfully upgrade the cooling system for a 400 small block Chevy. Read tips for installing a water pump and auxiliary coolant lines using fittings and fuel hoses.

A/C 101 on a '65 Mustang

Speedway Motors employee Alanna C. walks through the how-to of installing the Vintage Air A/C in her 1965 Ford Mustang.

Installing an External Oil Cooler

In this guide, Kevin demonstrates how to properly install an external oil cooler in his '54 Chevy Belair with a Big Block Chevy engine.

New Product

Maradyne |

#35900014

Maradyne M146K Champion 14IN 160W 1555 CFM Reversable S-Blade Fan

Fan Diameter:

14 Inch

Maximum Fan CFM:

1555 CFM

Fan Flow Type:

Reversible

$152.25

/each

-7%

Earls |

#425AT983306ERL

Earls AT983306ERL 90 Degree -6 AN Bulkhead Fitting, Anodized Aluminum

(3)

AN Size:

-6 AN

Angle:

90 degree

Fitting End A:

-6 AN Male

$20.87

/each

$22.58

-70%

Aluminum Male AN12 O-Ring to AN12 Adaptor

Aeroquip |

#1062955

Aluminum Male AN12 O-Ring to AN12 Adaptor

(1)

Fitting End A:

-12 AN Male

Fitting End B:

-12 AN Male O-ring

Angle:

Straight

$16.99

/each

$58.19

DeWitts |

#133305

DeWitts® 32-305 305 HP Coolant, 1 Gallon

Sold in Quantity:

Each

Freezing Point - Concentrate:

-34 F

$36.99

/each

Tight Fit 90 Degree Socketless Reusable Fittings

Aeroquip |

#1062071

Tight Fit 90 Degree Socketless Reusable Fittings

(13)

Angle:

90 degree

Material Type:

Steel

Sold in Quantity:

Each

$9.99

/each

AFCO |

#106100042

AFCO Radiator Combo Pack

(1)

$151.99

/kit

Steel 4-Blade 17 Inch Mechanical Racing Fan And Spacer

Speedway Motors |

#9100729

Steel 4-Blade 17 Inch Mechanical Racing Fan And Spacer

(1)

Fan Diameter:

17 Inch

Rotation:

Clockwise/Standard

Blade Type:

Non-Flex

$95.99

/kit

SPAL |

#9100538

SPAL Cooling Fan Relay Kit and Fan Mounting Kit

Thread Pitch:

3/8" NPT Sender 1/2" NPT Bushing

Temp. Range:

165 Degrees Off 185 Degrees On

Sold in Quantity:

Kit

$118.99

/kit

Universal LS Swap Radiator Kit w/ Steam Port Hose Adapter, Double

Speedway Motors |

#91604057

Universal LS Swap Radiator Kit w/ Steam Port Hose Adapter, Double

(22)

Radiator Style:

Double Pass

Radiator Flow Direction:

Crossflow

Material Type:

Aluminum

$246.99

/kit

New Product

Billet Specialties |

#21101270

Billet Specialties RP1270 SD-7 90 Deg. Compressor Manifold, POL

Sold in Quantity:

Each

GTIN Code:

800770111414

$84.95

/each

-14%

AFCO |

#10680101NU

AFCO 80101N-U 19 in. X 27.5 in. Radiator, Universal Inlet

Radiator Style:

Single Pass

Material Type:

Aluminum

Tube Size:

1.5"

$314.99

/each

$369.99

-9%

Aeromotive |

#10915610

Aeromotive 15610 -10 AN ORB to -8 AN Male Flare Reducer Fitting

Fitting End A:

-8 AN Male

Fitting End B:

-10 AN Male O-ring

Angle:

Straight

$29.08

/each

$31.99

-9%

Aeromotive |

#10915616

Aeromotive 15616 3/8 Inch NPT to -8 AN Male Flare Adapter Fitting

Fitting End A:

-8 AN Male

Fitting End B:

3/8" NPT Male

Angle:

Straight

$14.59

/each

$16.05

-9%

Aeromotive |

#10915689

Aeromotive 15689 -6 AN ORB to -6 AN Flare 90-Degree Elbow Fitting

Fitting End A:

-6 AN Male

Fitting End B:

-6 AN Male o-ring

Angle:

90 degree

$40.62

/each

$44.68

Dayco |

#31771990

Dayco 71990 LS Truck Lower Molded Radiator Hose

Material Type:

Rubber

Sold in Quantity:

Each

$29.99

/each

-7%

Earls |

#425989538ERL

Earls 989538ERL -3 AN to 10mm x 1.0 IFF Tubing Adapter for Toyota

Fitting End A:

-3 AN Male

Fitting End B:

10mm x 1.0 I.F. Female / Toyota

Material Type:

Steel

$11.93

/each

$12.90

-7%

Earls |

#425SS983203ERL

Earls SS983203ERL Straight -3 AN Bulkhead, Stainless Steel

(4)

AN Size:

-3 AN

Angle:

Straight

Fitting End A:

-3 AN Male

$18.95

/each

$20.50

-7%

Earls |

#425591941ERL

Earls 591941ERL Brake Adapter, 7/16 Inch-20, -4 AN, Zinc Plated Steel

Fitting End A:

-4 AN Male

Fitting End B:

7/16"-20 I.F. Male

Material Type:

Steel

$22.40

/pair

$24.23

-7%

Earls |

#425AT921104ERL

Earls AT921104ERL 90 Degree -4 AN Male to -4 AN Female Swivel

(1)

Fitting End A:

-4 AN Male

Fitting End B:

-4 AN Female

Angle:

90 degree

$33.24

/each

$35.96

-7%

Earls |

#425AT921110ERL

Earls AT921110ERL 90 Degree -10 AN Male to -10 AN Female Swivel

Fitting End A:

-10 AN Male

Fitting End B:

-10 AN Female

Angle:

90 degree

$46.57

/each

$50.38

-7%

Earls |

#425AT925106ERL

Earls AT925106ERL -6 AN Tee, Female Swivel on Branch, Aluminum

Fitting End A:

-6 AN Female

Fitting End B:

-6 AN Male

Fitting End C:

-6 AN Male

$39.90

/each

$43.17

-7%

Earls |

#425AT926108ERL

Earls AT926108ERL -8 AN Tee, Female Swivel on Run, Aluminum

Fitting End A:

-8 AN Female

Fitting End B:

-8 AN Male

Fitting End C:

-8 AN Male

$62.75

/each

$67.95

-7%

Earls |

#425AT981503ERL

Earls AT981503ERL -3 AN Male Straight Union, Anodized Aluminum

Fitting End A:

-3 AN Male

Fitting End B:

-3 AN Male

Angle:

Straight

$11.93

/each

$12.90

-7%

Earls |

#425AT981603ERL

Earls AT981603ERL -3 AN Male to 1/8 Inch NPT Straight Adapter

Fitting End A:

-3 AN Male

Fitting End B:

1/8" NPT Male

Angle:

Straight

$7.38

/each

$7.99

-7%

Earls |

#425AT981604ERL

Earls AT981604ERL -4 AN Male to 1/8 Inch NPT Straight Adapter

(1)

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

Straight

$7.43

/each

$8.03

-7%

Earls |

#425AT981608ERL

Earls AT981608ERL -8 AN Male to 3/8 Inch NPT Straight Adapter

(1)

Fitting End A:

-8 AN Male

Fitting End B:

3/8" NPT Male

Angle:

Straight

$14.88

/each

$16.10

-7%

Earls |

#425989548ERL

Earls 989548ERL -4 AN to 7/16-24 IFF Tubing Adapter, Zinc Plated Steel

(2)

Fitting End A:

-4 AN Male

Fitting End B:

7/16"-24 I.F. Female

Material Type:

Steel

$13.40

/each

$14.49

Clayton Machine AC-902 Elliptical AC Vent

Clayton Machine Works |

#231001

Clayton Machine AC-902 Elliptical AC Vent

Finish:

Chrome

Sold in Quantity:

Each

$151.95

/each

Spectre 5953 Heater Hose Fitting, 1/2 Inch NPT to 5/8 Inch Hose Barb

Spectre Performance |

#4655953

Spectre 5953 Heater Hose Fitting, 1/2 Inch NPT to 5/8 Inch Hose Barb

(1)

Thread Pitch:

1/2" NPT

Angle:

Straight

Finish:

Chrome

$12.99

/each

Mr Gasket |

#550220106BL

Mr Gasket 220106-BL -6 Straight Swivel Hose End, Black

(1)

Fitting Hose Size:

-6 AN

Fitting End A:

-6 AN Female

Fitting End B:

-6 AN Hose

$5.95

/each

Vintage Air |

#725491006KUR

Vintage Air 491006-KUR Standard Slide Knob, Gen II Heat Control

GTIN Code:

842829121920

$9.59

/each

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1981 GMC K2500 Cooling and Heating Parts

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Products

Steel 45 Degree -4 AN to 1/8 NPT Male Adapter Fitting

Fragola 483703-BL -3AN X 45 Degree Bulkhead Adapter, Black

Flex-A-Lite 640 Mojave Universal Heater 117306

Maradyne M073K 6.5" 130W Electric Fan Puller Only

Maradyne M103K 10" 130W Reversible Electric Fan

Related Articles

Maradyne M146K Champion 14IN 160W 1555 CFM Reversable S-Blade Fan

Earls AT983306ERL 90 Degree -6 AN Bulkhead Fitting, Anodized Aluminum

Aluminum Male AN12 O-Ring to AN12 Adaptor

DeWitts® 32-305 305 HP Coolant, 1 Gallon

Tight Fit 90 Degree Socketless Reusable Fittings

AFCO Radiator Combo Pack

Steel 4-Blade 17 Inch Mechanical Racing Fan And Spacer

SPAL Cooling Fan Relay Kit and Fan Mounting Kit

Universal LS Swap Radiator Kit w/ Steam Port Hose Adapter, Double

Billet Specialties RP1270 SD-7 90 Deg. Compressor Manifold, POL

AFCO 80101N-U 19 in. X 27.5 in. Radiator, Universal Inlet

Aeromotive 15610 -10 AN ORB to -8 AN Male Flare Reducer Fitting

Aeromotive 15616 3/8 Inch NPT to -8 AN Male Flare Adapter Fitting

Aeromotive 15689 -6 AN ORB to -6 AN Flare 90-Degree Elbow Fitting

Dayco 71990 LS Truck Lower Molded Radiator Hose

Earls 989538ERL -3 AN to 10mm x 1.0 IFF Tubing Adapter for Toyota

Earls SS983203ERL Straight -3 AN Bulkhead, Stainless Steel

Earls 591941ERL Brake Adapter, 7/16 Inch-20, -4 AN, Zinc Plated Steel

Earls AT921104ERL 90 Degree -4 AN Male to -4 AN Female Swivel

Earls AT921110ERL 90 Degree -10 AN Male to -10 AN Female Swivel

Earls AT925106ERL -6 AN Tee, Female Swivel on Branch, Aluminum

Earls AT926108ERL -8 AN Tee, Female Swivel on Run, Aluminum

Earls AT981503ERL -3 AN Male Straight Union, Anodized Aluminum

Earls AT981603ERL -3 AN Male to 1/8 Inch NPT Straight Adapter

Earls AT981604ERL -4 AN Male to 1/8 Inch NPT Straight Adapter

Earls AT981608ERL -8 AN Male to 3/8 Inch NPT Straight Adapter

Earls 989548ERL -4 AN to 7/16-24 IFF Tubing Adapter, Zinc Plated Steel

Clayton Machine AC-902 Elliptical AC Vent

Spectre 5953 Heater Hose Fitting, 1/2 Inch NPT to 5/8 Inch Hose Barb

Mr Gasket 220106-BL -6 Straight Swivel Hose End, Black

Vintage Air 491006-KUR Standard Slide Knob, Gen II Heat Control