1978 GMC C25 HVAC Heater Cores
Save up to 40% on original replacement 1978 GMC C25 HVAC Heater Cores. Navigate our online catalogue to find HVAC Heater Cores and other parts designed specifically to fit a 1978 GMC C25.
HVAC Heater Core
$62.58
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 1 Hour Tuesday Sep. 23rd
Pick-Up: Ready in 1 Hour Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
With AC
With AC
HVAC Heater Core
$59.77
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 1 Hour Tuesday Sep. 23rd
Pick-Up: Ready in 1 Hour Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
Without AC
Without AC
HVAC Heater Core
$68.25
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
$68.25
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
$68.25
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
$68.25
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
$68.25
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
$68.25
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
$48.21
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Without Air Conditioning
Without Air Conditioning
HVAC Heater Core
$48.21
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
Without Air Conditioning
Without Air Conditioning
HVAC Heater Core
$48.21
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
Without Air Conditioning
Without Air Conditioning
HVAC Heater Core
$48.21
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
Without Air Conditioning
Without Air Conditioning
HVAC Heater Core
$48.21
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Vehicle Fitment Notes:
Without Air Conditioning
Without Air Conditioning
HVAC Heater Core
$48.21
In Stock
Ships: Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Pick-Up: Ready in 2-3 Hours Tuesday Sep. 23rd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
Without Air Conditioning
Without Air Conditioning
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: Base;
Body Type: Cab & Chassis; Sub-Model: Base;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: High Sierra;
Body Type: Cab & Chassis; Sub-Model: High Sierra;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: Sierra Classic;
Body Type: Cab & Chassis; Sub-Model: Sierra Classic;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: Sierra Grande;
Body Type: Cab & Chassis; Sub-Model: Sierra Grande;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: Base;
Body Type: Crew Cab Pickup; Sub-Model: Base;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: High Sierra;
Body Type: Crew Cab Pickup; Sub-Model: High Sierra;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: Sierra Classic;
Body Type: Crew Cab Pickup; Sub-Model: Sierra Classic;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: Sierra Grande;
Body Type: Crew Cab Pickup; Sub-Model: Sierra Grande;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: Base;
Body Type: Standard Cab Pickup; Sub-Model: Base;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: High Sierra;
Body Type: Standard Cab Pickup; Sub-Model: High Sierra;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: Sierra Classic;
Body Type: Standard Cab Pickup; Sub-Model: Sierra Classic;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$58.49
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: Sierra Grande;
Body Type: Standard Cab Pickup; Sub-Model: Sierra Grande;
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: Base;
Body Type: Cab & Chassis; Sub-Model: Base;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: High Sierra;
Body Type: Cab & Chassis; Sub-Model: High Sierra;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: Sierra Classic;
Body Type: Cab & Chassis; Sub-Model: Sierra Classic;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Cab & Chassis; Sub-Model: Sierra Grande;
Body Type: Cab & Chassis; Sub-Model: Sierra Grande;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: Base;
Body Type: Crew Cab Pickup; Sub-Model: Base;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: High Sierra;
Body Type: Crew Cab Pickup; Sub-Model: High Sierra;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: Sierra Classic;
Body Type: Crew Cab Pickup; Sub-Model: Sierra Classic;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Crew Cab Pickup; Sub-Model: Sierra Grande;
Body Type: Crew Cab Pickup; Sub-Model: Sierra Grande;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: Base;
Body Type: Standard Cab Pickup; Sub-Model: Base;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: High Sierra;
Body Type: Standard Cab Pickup; Sub-Model: High Sierra;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: Sierra Classic;
Body Type: Standard Cab Pickup; Sub-Model: Sierra Classic;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
$62.41
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Body Type: Standard Cab Pickup; Sub-Model: Sierra Grande;
Body Type: Standard Cab Pickup; Sub-Model: Sierra Grande;
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
Call for Pricing
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
w/ AC
w/ AC
HVAC Heater Core
Call for Pricing
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
With Air Conditioning
With Air Conditioning
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
w/o AC
w/o AC
HVAC Heater Core - Front
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
HVAC Heater Core - Front
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
HVAC Heater Core - Front
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
HVAC Heater Core - Front
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
HVAC Heater Core - Front
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
HVAC Heater Core - Front
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);