Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009
JOIN GEARS TO SAVE 5%
Shop All Brands
Shopping for

1991 GMC C2500

X
  2. Auto Parts
  3. Belts and Cooling
  4. Radiators, Coolers and Related Components
  5. Radiator
  6. ACDelco 20905 for 1991 GMC C2500

ACDelco 20905 Radiator
for 1991 GMC C2500

ACDelco 20905 Radiator - 1991 GMC C2500 Image 1
ACDelco 20905 Radiator - 1991 GMC C2500 Image 2
ACDelco 20905 Radiator - 1991 GMC C2500 Image 3
ACDelco 20905 Radiator - 1991 GMC C2500 Image 4
ACDelco 20905 Radiator - 1991 GMC C2500 Image 5
ACDelco 20905 Radiator - 1991 GMC C2500 Image 6
ACDelco 20905 Radiator - 1991 GMC C2500 Image 7
ACDelco 20905 Radiator - 1991 GMC C2500 Image 8
ACDelco 20905 Radiator - 1991 GMC C2500 Image 9
ACDelco 20905 Radiator - 1991 GMC C2500 Image 10
ACDelco 20905 Radiator - 1991 GMC C2500 Image 11
ACDelco 20905 Radiator - 1991 GMC C2500

ACDelco
Brand:ACDelco
Part Number: 20905
UPC: 00036666850659
Weight: 31.77 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the ACDelco 20905 Radiator for your 1991 GMC C2500. Buy now and secure your purchase online!

GM Genuine Parts Radiators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Radiators are heat exchangers, typically located in the front of the vehicle where air can flow through the fins and dissipate heat. Modern radiators are made from aluminum and plastic, while older vehicles used copper and brass. These radiators are designed to be corrosion resistant with optimal heat transfer characteristics. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Corrosion-resistant aluminum designed core helps optimize the radiators long lasting service life
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Lightweight; the radiators have a positive heat transfer to weight ratio
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Specifications:

Core Height:
17.25 in.
Core Height:
438.15 mm
Core Thickness:
2.12 in.
Core Thickness:
53.975 mm
Core Width:
34 in.
Core Width:
863.6 mm
Programming Required:
No
Country of Origin:
US

ACDelco 20905 Radiator compatibility with your 1991 GMC C2500...

Last Updated: 05/20/2023

Years Vehicle Per Vehicle Fit NotesFitment Notes

1992

 

1991

 

1992

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
4.10R(GT5), 4.56R(HC4)
8th VIN Digit: K
Mfr Code: 4L80-E
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
4.10R(GT5), 4.56R(HC4)
8th VIN Digit: K
Mfr Code: 4L80-E

1 Per Vehicle

1992

 

1991

 

1992

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
4.10R(GT5), 4.56R(HC4)
8th VIN Digit: K
Mfr Code: THM700-R4/4L60/MD8
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
4.10R(GT5), 4.56R(HC4)
8th VIN Digit: K
Mfr Code: THM700-R4/4L60/MD8

1 Per Vehicle

1992

 

1991

 

1992

 

1991

 
GMC C2500

7.4L V8 Gas OHV
1
 
EXCEPT HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
3.73R(GT4), ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
Eng: L19
8th VIN Digit: N
Mfr Code: 4L80-E
 

GMC C2500



7.4L V8 Gas OHV EXCEPT HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
3.73R(GT4), ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
Eng: L19
8th VIN Digit: N
Mfr Code: 4L80-E

1 Per Vehicle

1991

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR & TRANS OIL COOLER(V02), HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
A/C
MANUAL CONTROLS(C60), COPPER RADIATOR(VSJ)
8th VIN Digit: K
Mfr Code: 4L80-E
 

GMC C2500



5.7L V8 Gas OHV EXCEPT ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR & TRANS OIL COOLER(V02), HVY DUTY A/TRNS CLR(5A6)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
A/C
MANUAL CONTROLS(C60), COPPER RADIATOR(VSJ)
8th VIN Digit: K
Mfr Code: 4L80-E

1 Per Vehicle

1991

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Cab & Chassis
Mfr Code: SM465/M20
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Cab & Chassis
Mfr Code: SM465/M20

1 Per Vehicle

1991

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Extended Cab Pickup
Mfr Code: MG5
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Extended Cab Pickup
Mfr Code: MG5

1 Per Vehicle

1991

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Extended Cab Pickup
Mfr Code: SM465/M20
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Extended Cab Pickup
Mfr Code: SM465/M20

1 Per Vehicle

1991

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Standard Cab Pickup
Mfr Code: MG5
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Standard Cab Pickup
Mfr Code: MG5

1 Per Vehicle

1991

 

1991

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Standard Cab Pickup
Mfr Code: SM465/M20
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY M/TRNS CLR(5A5)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Standard Cab Pickup
Mfr Code: SM465/M20

1 Per Vehicle

1991

 

1991

 
GMC C2500

7.4L V8 Gas OHV
1
 
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
3.73R(GT4), HVY DUTY M/TRNS CLR(5A5)
Eng: L19
8th VIN Digit: N
Mfr Code: SM465/M20
 

GMC C2500



7.4L V8 Gas OHV CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
3.73R(GT4), HVY DUTY M/TRNS CLR(5A5)
Eng: L19
8th VIN Digit: N
Mfr Code: SM465/M20

1 Per Vehicle

1991

 

1991

 
GMC C2500

7.4L V8 Gas OHV
1
 
ENGINE OIL COOLING SYSTEM(KC4), HVY DUTY A/TRNS CLR(5A6), HEAVY DUTY RADIATOR & TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
Eng: L19
8th VIN Digit: N
Mfr Code: 4L80-E
 

GMC C2500



7.4L V8 Gas OHV ENGINE OIL COOLING SYSTEM(KC4), HVY DUTY A/TRNS CLR(5A6), HEAVY DUTY RADIATOR & TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
Eng: L19
8th VIN Digit: N
Mfr Code: 4L80-E

1 Per Vehicle

1991

 

1990

 

1991

 

1990

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY A/TRNS CLR(5A6)
ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Cab & Chassis
Mfr Code: THM700-R4/4L60/MD8
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY A/TRNS CLR(5A6)
ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Cab & Chassis
Mfr Code: THM700-R4/4L60/MD8

1 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY A/TRNS CLR(5A6)
ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Extended Cab Pickup
Mfr Code: THM700-R4/4L60/MD8
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY A/TRNS CLR(5A6)
ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Extended Cab Pickup
Mfr Code: THM700-R4/4L60/MD8

1 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
GMC C2500

5.7L V8 Gas OHV
1
 
EXCEPT HVY DUTY A/TRNS CLR(5A6)
ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Standard Cab Pickup
Mfr Code: THM700-R4/4L60/MD8
 

GMC C2500



5.7L V8 Gas OHV EXCEPT HVY DUTY A/TRNS CLR(5A6)
ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02)
CORE SIZE 34INX17 1/4INX2 1/8IN CODE PW,L8,SP,PA,PB,PD,PX,NF,NJ,05,L2,L3,L4,L7,TRANS OIL CLR
8th VIN Digit: K
Standard Cab Pickup
Mfr Code: THM700-R4/4L60/MD8

1 Per Vehicle

Didn't find a match for your vehicle?

   See Other Choices