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Peterbilt 378 Cooling & HVAC For Sale

Browse Peterbilt 378 Cooling & HVAC for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 76 listings. Peterbilt 378 pricing ranges from $75 to $1,270 based on recent marketplace data. Filter by condition, price, or year to find the right Peterbilt 378.
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Truck Parts (76)
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Cooling & HVAC (76)
   A/C Compressors (1)    A/C Condensers (3)    Blower Motors (HVAC) (2)    Cooling Assemblies (Rad., Cond., ATAAC) (5)    Fan Blades (1)    Fan Clutches (1)    Heater / AC Climate Control Parts (13)    Intercoolers & Charge Air Coolers (10)    Intercoolers (1)    Radiator Frames (1)    Radiator Overflow Bottles / Surge Tanks (8)    Radiators (30)
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Peterbilt (76)
Model
378 (76)
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Showing 1 - 25 of 76 Listings

1 - 25 of 76 listings
1 - 25 of 76 listings
Peterbilt 378 Radiator

2005 Peterbilt 378 Radiator

$895 USD
GOOD USED TAKEOUT/ PRESSURE CHECKED RADIATOR ASSEMBLY/ NO RADIATOR CAP/ FIREWALL MOUNTED RESERVOIR, Engine Make: Caterpillar, Engine Model: C15, With Frame: true
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2005
Part Number239298
Stock Number60224-7
MLS Number12918614
CategoryRadiators
Last Updated6/13/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator Overflow Bottle / Surge Tank

2007 Peterbilt 378 Radiator Overflow Bottle / Surge Tank

$175 USD
GOOD USED SURGE TANK/ RADIATOR OVERFLOW BOTTLE/ STEEL FIREWALL MOUNT., Dimensions: NA, Fill Location: TOP
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2007
Part NumberGET
Stock Number122823
MLS Number12580946
CategoryRadiator Overflow Bottles / Surge Tanks
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator

2004 Peterbilt 378 Radiator

$995 USD
GOOD USED RADIATOR ASSEMBLY. WILL PRESSURE CHECK. 90 DAY WARRANTY 378/379 RESERVIOR ON TOP, Engine Make: Caterpillar, Engine Model: C15, Material: COPPER BRASS
ConditionUsed
Engine ModelCaterpillar C15
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Part Number239208
Stock Number122622-13
MLS Number11809831
CategoryRadiators
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator

2003 Peterbilt 378 Radiator

$895 USD
GOOD USED RADIATOR ASSEMBLY, WILL PRESSURE CHECK. 90 DAY WARRANTY, Dimensions: NA, Engine Make: Caterpillar, Engine Model: C12, Material: COPPER/BRASS
ConditionUsed
Engine ModelCaterpillar C12
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2003
Part Number239208
Stock Number42022-13
MLS Number11363117
CategoryRadiators
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Charge Air Cooler (ATAAC)

2003 Peterbilt 378 Charge Air Cooler (ATAAC)

$300 USD
GOOD USED PRESSURE CHECKED AIR TO AIR/ CHARGE AIR COOLER, Engine Make: Caterpillar, Engine Model: C12
ConditionUsed
Engine ModelCaterpillar C12
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2003
Part Number222101
Stock Number42022-7
MLS Number11363111
CategoryIntercoolers & Charge Air Coolers
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator

1987 Peterbilt 378 Radiator

$1,095 USD
GOOD USED RADIATOR ASSEMBLY. LOW FLOW/ WILL PRESSURE CHECK. 90 DAY WARRANTY, Dimensions: GET, Engine Make: Cummins, Engine Model: 444
ConditionUsed
Engine ModelCummins 444
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1987
Part NumberNA
Stock Number32722-13
MLS Number11293327
CategoryRadiators
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Charge Air Cooler (ATAAC)

2000 Peterbilt 378 Charge Air Cooler (ATAAC)

$1,095 USD
GOOD USED COOLING PACK. WILL BE PRESSURE CHECKED., Core Charge: N/A, Engine Make: Caterpillar, Engine Model: 3406E
ConditionUsed
Engine ModelCaterpillar 3406E
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2000
Stock Number80919-6
MLS Number9861770
CategoryIntercoolers & Charge Air Coolers
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Charge Air Cooler (ATAAC)

2006 Peterbilt 378 Charge Air Cooler (ATAAC)

$1,095 USD
GOOD USED COOLING PACK. WILL BE PRESSURE CHECKED., Core Charge: N/A, Engine Make: Cummins, Engine Model: ISX
ConditionUsed
Engine ModelCummins ISX
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2006
Stock Number42019-8
MLS Number9725446
CategoryIntercoolers & Charge Air Coolers
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator

2003 Peterbilt 378 Radiator

$1,095 USD
GOOD USED COOLING PACK ASSEMBLY. WILL BE PRESSURE CHECKED. INCLUDES AIR COOLER AND CONDENSER, Dimensions: N/A, Engine Make: Caterpillar, Engine Model: C15, Fill Location: N/A
ConditionUsed
Engine ModelCaterpillar C15
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2003
Stock Number100618-16
MLS Number9526717
CategoryRadiators
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Charge Air Cooler (ATAAC)

2003 Peterbilt 378 Charge Air Cooler (ATAAC)

$1,095 USD
GOOD USED COOLING PACK ASSEMBLY. WILL BE PRESSURE CHECKED. INCLUDES CONDENSER AND RADIATOR, Core Charge: N/A, Engine Make: Caterpillar, Engine Model: C15
ConditionUsed
Engine ModelCaterpillar C15
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2003
Stock Number100618-11
MLS Number9526712
CategoryIntercoolers & Charge Air Coolers
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator

2002 Peterbilt 378 Radiator

$995 USD
GOOD USED COOLPAK. WILL BE PRESSURE CHECKED. INCLUDES AIR COOLER AND CONDENSER. WAS IN FIRE, CHECK FOR DAMAGE, Dimensions: GET, Engine Make: Caterpillar, Engine Model: C15, Fill Location:...
ConditionUsed
Engine ModelCaterpillar C15
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2002
Stock Number81817-8
MLS Number9194094
CategoryRadiators
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Peterbilt 378 Radiator for a 1999 Peterbilt 378 SBA

Peterbilt 378 Radiator for a 1999 Peterbilt 378 SBA

Contact for price
GOOD RADIATOR SET. OUT OF A RUNNING AND DRIVING TRUCK., Engine Make: Caterpillar, Engine Model: C12
ConditionUsed
Engine ModelCaterpillar C12
Fits To Make(s)Peterbilt
Fits To Model(s)378 SBA
Will Fit Year(s)1999
Stock Number515187-13
MLS Number10468600
CategoryRadiators
Last Updated5/14/2026
Location
Farr West, UT, US
Sold By
Rocky Mountain Truck Parts
(855) 980-___  SHOW
NUMBERCall Seller
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Rocky Mountain Truck Parts
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