GMC C25 Radiators and Components

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GMC C25

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Spectre 9703 T-Bolt Hose Clamp, 4 Inch, Each

Spectre Performance |

#4659703

Spectre 9703 T-Bolt Hose Clamp, 4 Inch, Each

Style:

T-Bolt

Material Type:

Stainless Steel

Color:

Natural

$9.99

/each

-8%

Mr Gasket |

#5509133

Mr Gasket 9133 Overflow Tank, Universal, Polished Stainless Steel

GTIN Code:

084041026564

$118.95

/each

$129.95

90 Degree Flare Adaptor, AN8 to 1/2 Inch NPT

Speedway Motors |

#6176087

90 Degree Flare Adaptor, AN8 to 1/2 Inch NPT

(2)

Fitting End A:

-8 AN Male

Fitting End B:

1/2" NPT Male

Angle:

90 degree

$29.99

/each

Male Steel 37 Degree AN Flare Weld Bung Fitting, -16 AN

Speedway Motors |

#6177116

Male Steel 37 Degree AN Flare Weld Bung Fitting, -16 AN

AN Size:

-16 AN

Thread Type:

RH Male

Fitting Attachment 1:

Male Threads

$12.99

/each

Spectre 5160 Magna Clamp Hose Clamps, Anodized, 2 ID

Spectre Performance |

#4655160

Spectre 5160 Magna Clamp Hose Clamps, Anodized, 2 ID

Style:

Worm Gear | Housing

Material Type:

Aluminum

Color:

Red/Blue

$15.99

/each

How To Choose A Radiator For Your Car

Learn how to choose the best radiator for your vehicle. Our guide covers key factors to consider when selecting an aftermarket radiator for your hot rod, muscle car, or classic pickup.

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.

Racing Wheel Technology Guide - Components and Design

Learn about finding the correct beadlock rings, lug-nut taper, wheel spacers, mud covers, and valve stems. This components are critical for safety.

Model A Radiator Mounting

Learn about Model A radiator mounting. Speedway employee Tim is installing a 1932 Ford radiator on his roadster. Follow his step by step installation guide.

Braking Components - Selection and Design

Looking for a performance or custom brake set-up? Whether you're replacing components or building your brakes from scratch, you may wonder what size master cylinder or booster to use. No need to worry, just follow our handy guide.

Putting a 32 Radiator in a 29 Roadster

Tim talks about the process of adapting a full size 1932 Ford Radiator to fit in his 1929 Ford Roadster project.

New Product Spotlight - 4th Quarter 2025 - Parts to Fuel Your Passion

Speedway Motors, a manufacturer, retailer and distributor of high-quality automotive parts and racing products, announced today new products now available on their website.

Installing Radiator Support Rods

We all need a little help from time to time. In this case, we had a grill shell on a 1946 Chevrolet Truck that could use some stiffening. Ride along as Heath installs support rods and rod brackets.

Disassembling Valvetrain Components

Rebuilding an engine? Stay organized by using a valvetrain rocker arm organizer tray while disassembling the valvetrain components. Learn some tips on why you shouldn't mix up lifters if you intend on using them again.

GM Steering Column Compatibility, Interchange & Repair Guide

Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility.

90 Degree Flare Adaptor, AN4 to 1/8 Inch NPT

Speedway Motors |

#6176080

90 Degree Flare Adaptor, AN4 to 1/8 Inch NPT

(3)

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

90 degree

$15.99

/each

-45%

45 Degree Flare Adaptor, AN10 to 1/2 Inch NPT

Speedway Motors |

#6176097

45 Degree Flare Adaptor, AN10 to 1/2 Inch NPT

Fitting End A:

-10 AN Male

Fitting End B:

1/2" NPT Male

Angle:

45 degree

$13.49

/each

$24.89

Small Universal Short Vertical Aluminum Radiator, LH and Cap

Speedway Motors |

#9101897

Small Universal Short Vertical Aluminum Radiator, LH and Cap

Radiator Style:

Single Pass

Radiator Flow Direction:

Downflow

Material Type:

Aluminum

$287.99

/kit

Aluminum Female Pipe Coupler Fitting, 1/8 Inch NPT, Blue Anodized

Speedway Motors |

#6176144

Aluminum Female Pipe Coupler Fitting, 1/8 Inch NPT, Blue Anodized

(2)

Fitting End A:

1/8" NPT Female

Fitting End B:

1/8" NPT Female

Angle:

Straight

$5.99

/each

-7%

Aluminum Female Pipe Coupler Fitting, 3/8 Inch NPT, Blue Anodized

Speedway Motors |

#6176146

Aluminum Female Pipe Coupler Fitting, 3/8 Inch NPT, Blue Anodized

(1)

Fitting End A:

3/8" NPT Female

Fitting End B:

3/8" NPT Female

Angle:

Straight

$12.49

/each

$13.45

Threaded Aluminum Weld Bung Fitting, 3/4 Inch NPT Female

Speedway Motors |

#6176806

Threaded Aluminum Weld Bung Fitting, 3/4 Inch NPT Female

Thread Pitch:

3/4" NPT Female

Material Type:

Aluminum

Finish:

Natural

$13.99

/each

Threaded Aluminum Weld Bung Fitting, 1 Inch NPT Female

Speedway Motors |

#6176808

Threaded Aluminum Weld Bung Fitting, 1 Inch NPT Female

Thread Pitch:

1" NPT Female

Material Type:

Aluminum

Finish:

Natural

$17.49

/each

Gates |

#39532922

Gates 32922 Power Grip Hose Clamp, 13/16 Inch - 15/16 Inch OD

(1)

Style:

Heat-Shrink

Material Type:

Thermoplastic

Color:

Black

$11.99

/each

-29%

Fragola |

#61795231

Fragola 495023-BL 90 Black Press Gauge Fitting 1/8 Fem -4 AN Male

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Female

Angle:

90 degree

$8.19

/each

$11.65

Speedway High Pressure Radiator Cap, 29-31 Lbs

Speedway Motors |

#91015628

Speedway High Pressure Radiator Cap, 29-31 Lbs

(39)

Pressure Rating:

29-31 psi

Material Type:

Steel

$19.49

/each

Speedway 90 -8 AN Flare to 3/8 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760860

Speedway 90 -8 AN Flare to 3/8 Inch NPT Pipe Adapter Fitting

Fitting End A:

-8 AN Male

Fitting End B:

3/8" NPT Male

Angle:

90 degree

$19.99

/each

Speedway 90 -8 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760870

Speedway 90 -8 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Fitting End A:

-8 AN Male

Fitting End B:

1/2" NPT Male

Angle:

90 degree

$23.99

/each

Black 45 Degree -10 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760971

Black 45 Degree -10 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Fitting End A:

-10 AN Male

Fitting End B:

1/2" NPT Male

Angle:

45 degree

$19.99

/each

Black 90 Degree -3 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760791

Black 90 Degree -3 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

(4)

Fitting End A:

-3 AN Male

Fitting End B:

1/8" NPT Male

Angle:

90 degree

$18.49

/each

Black 90 Degree -4 AN Flare to 1/4 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760811

Black 90 Degree -4 AN Flare to 1/4 Inch NPT Pipe Adapter Fitting

Fitting End A:

-4 AN Male

Fitting End B:

1/4" NPT Male

Angle:

90 degree

$14.99

/each

Speedway Motors |

#91015760

Quick Tight Hose Clamp, 3/4 - 1 Inch

(1)

Style:

Worm Gear

Material Type:

Stainless Steel

Color:

Natural

$3.09

/each

-31%

Fragola |

#61765020

Fragola 650207 Steel Brake Tubing Adapter, -4AN x 1/8 FPT

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Female

Angle:

Straight

$7.99

/each

$11.60

Nickel Straight to Aluminum Pipe Adapter Fitting -8 AN to 3/8 Inch NPT

Speedway Motors |

#61760480

Nickel Straight to Aluminum Pipe Adapter Fitting -8 AN to 3/8 Inch NPT

(1)

Fitting End A:

-8 AN Male

Fitting End B:

3/8" NPT Male

Angle:

Straight

$11.99

/each

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 3/4 In NPT

Speedway Motors |

#61760510

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 3/4 In NPT

Fitting End A:

-12 AN Male

Fitting End B:

3/4" NPT Male

Angle:

Straight

$19.99

/each

Black Straight -12 AN Flare to 3/4 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760511

Black Straight -12 AN Flare to 3/4 Inch NPT Pipe Adapter Fitting

(1)

Fitting End A:

-12 AN Male

Fitting End B:

3/4" NPT Male

Angle:

Straight

$18.49

/each

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 1/2 In NPT

Speedway Motors |

#61760520

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 1/2 In NPT

Fitting End A:

-12 AN Male

Fitting End B:

1/2" NPT Male

Angle:

Straight

$15.99

/each

Billet Specialties |

#91067025

Billet Specialties 67025 Aluminum Hose Clamp, 5/16 Inch Braided Hose

Style:

Worm Gear | Housing

Material Type:

Aluminum

Color:

Natural

$24.95

/each

Billet Specialties |

#91067325

Billet Specialties 67325 3/8 Inch Braided Hose Aluminum Hose End Cover

(3)

Style:

Worm Gear | Housing

Material Type:

Aluminum

Color:

Natural

$24.95

/each

Edelbrock |

#3258178

Edelbrock 8178 Pipe to Hose Barb Fitting, 90 Deg, 1/2 in. NPT

(1)

Fitting End A:

5/8" Hose barb

Fitting End B:

1/2" NPT Male

Angle:

90 degree

$38.95

/each

$163 Off

WindChill® LS 3-Row Radiator, Shroud/Fan

Speedway Motors |

#917368

WindChill® LS 3-Row Radiator, Shroud/Fan

(3)

Radiator Style:

Double Pass

Radiator Flow Direction:

Crossflow

Material Type:

Aluminum

as low as

$375.99

/kit

$539.26

-7%

Earls |

#425968804ERL

Earls 968804ERL Oil Pressure Adapter 4AN to 1/8 Inch NPT

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

Straight

$20.89

/each

$22.60

-8%

Longacre |

#47545220

Longacre® 52-45220 Long Leg Caliper Fitting, 1/8 NPT x -4 AN

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

90 degree

$10.99

/each

$11.99

-7%

Earls |

#425PAN6400ERL

Earls PAN6400-ERL Quarter Turn Fasteners, 7/16 Inch, .400, Oval

(1)

Head Diameter:

0.75"

Material Type:

Steel

Finish:

Silver

$21.08

/set

$22.80

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

-7%

Earls |

#425981688ERL

Earls 981688ERL Blue Straight -8 AN Male to 1/2 Inch NPT Adapter

Fitting End A:

-8 AN Male

Fitting End B:

1/2" NPT Male

Angle:

Straight

$12.94

/each

$14.00

Ideal Heavy Duty T-Bolt Clamp, 1-7/8 Inch Minimum Clamping Diameter

Ideal Clamps |

#917188

Ideal Heavy Duty T-Bolt Clamp, 1-7/8 Inch Minimum Clamping Diameter

(1)

Style:

T-Bolt

Material Type:

Steel

Color:

Natural

$7.69

/each

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GMC C25 Radiators and Components

Year

Part

Brand

Availability

Discounts

Engine Family

Price

Customer Rating

Products

Spectre 9703 T-Bolt Hose Clamp, 4 Inch, Each

Mr Gasket 9133 Overflow Tank, Universal, Polished Stainless Steel

90 Degree Flare Adaptor, AN8 to 1/2 Inch NPT

Male Steel 37 Degree AN Flare Weld Bung Fitting, -16 AN

Spectre 5160 Magna Clamp Hose Clamps, Anodized, 2 ID

Related Articles

90 Degree Flare Adaptor, AN4 to 1/8 Inch NPT

45 Degree Flare Adaptor, AN10 to 1/2 Inch NPT

Small Universal Short Vertical Aluminum Radiator, LH and Cap

Aluminum Female Pipe Coupler Fitting, 1/8 Inch NPT, Blue Anodized

Aluminum Female Pipe Coupler Fitting, 3/8 Inch NPT, Blue Anodized

Threaded Aluminum Weld Bung Fitting, 3/4 Inch NPT Female

Threaded Aluminum Weld Bung Fitting, 1 Inch NPT Female

Gates 32922 Power Grip Hose Clamp, 13/16 Inch - 15/16 Inch OD

Fragola 495023-BL 90 Black Press Gauge Fitting 1/8 Fem -4 AN Male

Speedway High Pressure Radiator Cap, 29-31 Lbs

Speedway 90 -8 AN Flare to 3/8 Inch NPT Pipe Adapter Fitting

Speedway 90 -8 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Black 45 Degree -10 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Black 90 Degree -3 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

Black 90 Degree -4 AN Flare to 1/4 Inch NPT Pipe Adapter Fitting

Quick Tight Hose Clamp, 3/4 - 1 Inch

Fragola 650207 Steel Brake Tubing Adapter, -4AN x 1/8 FPT

Nickel Straight to Aluminum Pipe Adapter Fitting -8 AN to 3/8 Inch NPT

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 3/4 In NPT

Black Straight -12 AN Flare to 3/4 Inch NPT Pipe Adapter Fitting

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 1/2 In NPT

Billet Specialties 67025 Aluminum Hose Clamp, 5/16 Inch Braided Hose

Billet Specialties 67325 3/8 Inch Braided Hose Aluminum Hose End Cover

Edelbrock 8178 Pipe to Hose Barb Fitting, 90 Deg, 1/2 in. NPT

WindChill® LS 3-Row Radiator, Shroud/Fan

Earls 968804ERL Oil Pressure Adapter 4AN to 1/8 Inch NPT

Longacre® 52-45220 Long Leg Caliper Fitting, 1/8 NPT x -4 AN

Earls PAN6400-ERL Quarter Turn Fasteners, 7/16 Inch, .400, Oval

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

Earls 981688ERL Blue Straight -8 AN Male to 1/2 Inch NPT Adapter

Ideal Heavy Duty T-Bolt Clamp, 1-7/8 Inch Minimum Clamping Diameter