1981 GMC C2500 Cooling and Heating Parts

2,680 products fit your

1981 GMC C2500

Add Engine

Show Direct Fit Parts

2,680 products

Sort By:

Clear All

Fitment

1981 GMC C2500

Products

-16%

Speedhut |

#140182102R

Speedhut R2-WT2-REV 2-1/16" Water Temp Gauge 50-125C w/Warning

Gauge Diameter:

2-1/16"

Gauge Range:

50-125 degrees C

Bezel Finish:

Chrome

$146.72

/each

$176.07

-16%

Speedhut |

#140182111A

Speedhut L2-WT1-ATQ 2-1/16" Water Temperature Gauge, 120-260°F

Gauge Diameter:

2-1/16"

Gauge Range:

120-260 F

Bezel Finish:

Chrome

$134.69

/each

$161.63

-16%

Speedhut |

#140182111C

Speedhut L2-WT1-COB 2-1/16" Water Temperature Gauge, 120-260°F

Gauge Diameter:

2-1/16"

Gauge Range:

120-260 F

Bezel Finish:

Chrome

$134.69

/each

$161.63

-16%

Speedhut |

#140182112A

Speedhut L2-WT2-ATQ 2-1/16" Water Temp Gauge, 100-300F

Gauge Diameter:

2-1/16"

Gauge Range:

50-125C

Bezel Finish:

Chrome

$134.69

/each

$161.63

-16%

Speedhut |

#140182112L

Speedhut L2-WT2-LEG 2-1/16" Water Temp Gauge 50-125C

Gauge Diameter:

2-1/16"

Gauge Range:

50-125 degrees C

Bezel Finish:

Chrome

$134.69

/each

$161.63

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!

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.

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.

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.

-16%

Speedhut |

#140182113P

Speedhut L2-WT3-PTC 2-1/16" Water Temperature Gauge, 120-260°F

Gauge Diameter:

2-1/16"

Gauge Range:

100-250F

Bezel Finish:

Black

$134.69

/each

$161.63

-7%

Earls |

#42500112ERL

Earls 00112ERL Hardline Adapter, 1/2-20 IFM to 9/16-18 IFF

Fitting Type:

Adapter Fitting

Angle:

Straight

Fitting End A:

1/2-20 I.F. Male

$16.39

/each

$17.73

-7%

Earls |

#42500113ERL

Earls 00113ERL Hardline Adapter, 9/16-18 IFM to 1/2-20 IFF

Fitting Type:

Adapter Fitting

Angle:

Straight

Fitting End A:

9/16-18 I.F. Male

$16.39

/each

$17.73

-7%

Earls |

#42500117ERL

Earls 00117ERL Hardline Adapter, 3/8-24 IFM to 7/16-24 IFF

(1)

Fitting Type:

Adapter Fitting

Angle:

Straight

Fitting End A:

3/8-24 I.F. Male

$14.88

/each

$16.10

Maxima |

#229839641

Maxima 89-83964 Off Road Coolant, 64 OZ Bottle, Each

GTIN Code:

051027004847

$17.49

/each

Maxima |

#22983964

Maxima 89-83964 Off Road Coolant, 64 OZ Bottles, Qty 6

Sold in Quantity:

Box

Reserve Alkalinity (5g of product):

12.5 ml

$101.99

/box

Colored Billet Aluminum Custom Hose Clamps, 1.5 - 4 Inch Sizes

Speedway Motors |

#91001356

Colored Billet Aluminum Custom Hose Clamps, 1.5 - 4 Inch Sizes

(21)

Style:

Worm Gear

Material Type:

Aluminum

Reusable:

Yes

$11.49

/each

DEi 010487 Heat Shroud Aluminized Line Sleeving, 2-1/2 x 3 Feet

DEI |

#35610487

DEi 010487 Heat Shroud Aluminized Line Sleeving, 2-1/2 x 3 Feet

(7)

GTIN Code:

607078104878

$45.99

/each

Stewart Warner |

#665284J

Stewart Warner 284J 2-1/16 Heavy Duty Electric Water Temperature Gauge

(2)

Gauge Diameter:

2-1/16"

Gauge Range:

100-280 °F

Bezel Finish:

Black Paint

$69.99

/each

Titan Tools |

#72845207

Titan Tools 45207 Hose Clamp Assortment, 20 Piece

(3)

Style:

Worm Gear

Material Type:

Steel

Color:

Natural

$15.99

/box

Stewart Warner |

#66582326

Stewart Warner Deluxe Water Temperature Gauge, Mechanical, 2-1/16 Inch

(28)

Gauge Diameter:

2-1/16"

Gauge Range:

100-265 °F

Bezel Finish:

Stainless

$105.99

/each

-9%

New Vintage USA |

#2760112791

New Vintage USA 01127-91 Performance Water Temp Black

$119.99

/each

$131.99

-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 |

#425AT921112ERL

Earls AT921112ERL 90 Degree -12 AN Male to -12 AN Female Swivel

Fitting End A:

-12 AN Male

Fitting End B:

-12 AN Female

Angle:

90 degree

$59.89

/each

$64.95

Earls |

#425AT922104ERL

Earls AT922104ERL 90 Degree -4 AN Male to 1/8 Inch NPT Male Swivel

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

90 degree

$41.81

/each

-7%

Earls |

#425300124ERL

Earls 300124ERL Auto-Fit Hose End, AN24, Red/Blue, Straight

Fitting Hose Size:

-24 AN

Fitting End A:

-24 AN Female

Fitting End B:

-24 AN Hose

$184.95

/each

$200.95

-7%

Earls |

#425750009ERL

Earls 750009ERL Vapor Guard 1 Ear Type 5/16 Inch Hose Clamp 5/Pk

Style:

Crimp

Material Type:

Stainless Steel

Color:

Natural

$10.38

/set

$11.23

-7%

Earls |

#425591932ERL

Earls 591932ERL Brake Adapter, 7/16 Inch-24, -3 AN, Zinc Plated Steel

(3)

Fitting End A:

-3 AN Male

Fitting End B:

7/16"-24 I.F. Male

Material Type:

Steel

$22.40

/each

$24.23

-7%

Earls |

#425750012ERL

Earls 750012ERL Vapor Guard 2 Ear Type 3/8 Inch Hose Clamp 5/Pk

(3)

Style:

Crimp

Material Type:

Stainless Steel

Color:

Natural

$13.40

/set

$14.49

-7%

Earls |

#425700109ERL

Earls 700109ERL Straight -8 AN Female to 1/2 Inch Barb Adapter

(2)

Fitting Hose Size:

-8 AN

Fitting End A:

-8 AN Female

Fitting End B:

-8 AN Hose

$10.60

/each

$11.46

-7%

Earls |

#425600103ERL

Earls 600103ERL Speed-Seal Hose End, -3 AN, Steel

(1)

Fitting Hose Size:

-3 AN

Fitting End A:

-3 AN Female

Fitting End B:

-3 AN Hose

$14.88

/each

$16.10

-7%

Earls |

#4256453003ERL

Earls 6453003ERL Speed-Seal -3 AN Hose End Tee, 3/16 Mount, Steel

Fitting End A:

-3 AN Male

Fitting End B:

-3 AN Male

Fitting End C:

-3 AN Male

$93.25

/each

$100.95

-7%

Earls |

#425813ERL

Earls 813ERL Ultrapro Oil Cooler, 13 Row Extra-Wide, Black

Overall Width:

16"

Overall Height:

3.940"

Overall Thickness:

$355.95

/each

$385.95

$409 Off

Holley |

#42520186BK

Holley 20-186BK GM LS Engine Mid-Mount Accessory System, Black

Pulley Style:

Serpentine

Crankshaft Pulley Included:

Yes

Crankshaft Pulley Material:

Steel

$2,299.95

/kit

$2,708.95

$445 Off

Holley |

#42520187

Holley 20-187 Mid-Mount LS Race Accessory System

Crankshaft Pulley Included:

Yes

Crankshaft Pulley Material:

Billet Aluminum

Water Pump Included:

Yes

$2,149.95

/each

$2,594.95

$813 Off

Holley |

#42520190

Holley 20-190 Premium Mid-Mount LS7 Complete Accessory System

Crankshaft Pulley Included:

Yes

Crankshaft Pulley Material:

Billet Aluminum

Water Pump Included:

Yes

$3,799.95

/each

$4,612.95

$807 Off

Holley |

#42520190BK

Holley 20-190BK Premium Mid-Mount LS7 Complete Accessory System

Crankshaft Pulley Included:

Yes

Crankshaft Pulley Material:

Billet Aluminum

Water Pump Included:

Yes

$3,749.95

/each

$4,556.95

-7%

Earls |

#425167203ERL

Earls 167203ERL Hose & Tubing Separator, 3/16 Inch, Set of 3, Polished

Hole Diameter:

0.188 Inch

Material Type:

6061 Aluminum

Finish:

Polished

$33.24

/each

$35.96

-7%

Earls |

#425167206ERL

Earls 167206ERL Hose & Tubing Separator, 3/8 Inch, Set of 2, Polished

GTIN Code:

021432271530

$33.24

/pair

$35.96

-7%

Earls |

#425167207ERL

Earls 167207ERL Hose & Tubing Separator, 7/16 Inch, Set of 2, Polished

Material Type:

Aluminum

Sold in Quantity:

Pair

$33.24

/pair

$35.96

-7%

Earls |

#425562047ERL

Earls 562047ERL Brake Adapter, 1/2 IF, -4 AN, Steel

Fitting End A:

-4 AN Male

Fitting End B:

1/2"-20 I.F. Male

Material Type:

Steel

$34.82

/pair

$37.67

Showing 1 - 540 of 2,680 results

Shop Feedback:

Did you find what you are looking for?

1981 GMC C2500 Cooling and Heating Parts

Subcategory

Part

Brand

Transmission Family

Availability

Engine Family

Discounts

Price

Customer Rating

Products

Speedhut R2-WT2-REV 2-1/16" Water Temp Gauge 50-125C w/Warning

Speedhut L2-WT1-ATQ 2-1/16" Water Temperature Gauge, 120-260°F

Speedhut L2-WT1-COB 2-1/16" Water Temperature Gauge, 120-260°F

Speedhut L2-WT2-ATQ 2-1/16" Water Temp Gauge, 100-300F

Speedhut L2-WT2-LEG 2-1/16" Water Temp Gauge 50-125C

Related Articles

Speedhut L2-WT3-PTC 2-1/16" Water Temperature Gauge, 120-260°F

Earls 00112ERL Hardline Adapter, 1/2-20 IFM to 9/16-18 IFF

Earls 00113ERL Hardline Adapter, 9/16-18 IFM to 1/2-20 IFF

Earls 00117ERL Hardline Adapter, 3/8-24 IFM to 7/16-24 IFF

Maxima 89-83964 Off Road Coolant, 64 OZ Bottle, Each

Maxima 89-83964 Off Road Coolant, 64 OZ Bottles, Qty 6

Colored Billet Aluminum Custom Hose Clamps, 1.5 - 4 Inch Sizes

DEi 010487 Heat Shroud Aluminized Line Sleeving, 2-1/2 x 3 Feet

Stewart Warner 284J 2-1/16 Heavy Duty Electric Water Temperature Gauge

Titan Tools 45207 Hose Clamp Assortment, 20 Piece

Stewart Warner Deluxe Water Temperature Gauge, Mechanical, 2-1/16 Inch

New Vintage USA 01127-91 Performance Water Temp Black

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

Earls AT921112ERL 90 Degree -12 AN Male to -12 AN Female Swivel

Earls AT922104ERL 90 Degree -4 AN Male to 1/8 Inch NPT Male Swivel

Earls 300124ERL Auto-Fit Hose End, AN24, Red/Blue, Straight

Earls 750009ERL Vapor Guard 1 Ear Type 5/16 Inch Hose Clamp 5/Pk

Earls 591932ERL Brake Adapter, 7/16 Inch-24, -3 AN, Zinc Plated Steel

Earls 750012ERL Vapor Guard 2 Ear Type 3/8 Inch Hose Clamp 5/Pk

Earls 700109ERL Straight -8 AN Female to 1/2 Inch Barb Adapter

Earls 600103ERL Speed-Seal Hose End, -3 AN, Steel

Earls 6453003ERL Speed-Seal -3 AN Hose End Tee, 3/16 Mount, Steel

Earls 813ERL Ultrapro Oil Cooler, 13 Row Extra-Wide, Black

Holley 20-186BK GM LS Engine Mid-Mount Accessory System, Black

Holley 20-187 Mid-Mount LS Race Accessory System

Holley 20-190 Premium Mid-Mount LS7 Complete Accessory System

Holley 20-190BK Premium Mid-Mount LS7 Complete Accessory System

Earls 167203ERL Hose & Tubing Separator, 3/16 Inch, Set of 3, Polished

Earls 167206ERL Hose & Tubing Separator, 3/8 Inch, Set of 2, Polished

Earls 167207ERL Hose & Tubing Separator, 7/16 Inch, Set of 2, Polished

Earls 562047ERL Brake Adapter, 1/2 IF, -4 AN, Steel