SAVE 10% SITEWIDE Click to Apply
Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009

ACDelco 251-2031 Engine Oil Cooler Line Seal
for 2003 (please select make/model)

ACDelco 251-2031 Engine Oil Cooler Line Seal - 2003 Image 1
ACDelco 251-2031 Engine Oil Cooler Line Seal - 2003 Image 2
ACDelco 251-2031 Engine Oil Cooler Line Seal - 2003

ACDelco
Brand:ACDelco
Part Number: 251-2031
UPC: 00021625677002
Weight: 0.38 lbs
Condition:New



On Sale:

$22.50

Availability:
3 in Stock
Warehouse: US-12
Quantity:

Product Information

Description:

Get the ACDelco 251-2031 Engine Oil Cooler Line Seal for your 2003. Buy now and secure your purchase online!

GM Genuine Parts Multi-Purpose O-Rings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These o-rings are used in some applications instead of paper or composite gaskets to seal engine components. The interface between components will have a machined groove to accept the O-ring. The O-ring is slightly compressed when assembled to provide a liquid-tight seal, keeping engine fluids in and air and dirt out. 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:

  • 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
  • Made from heat and chemical-resistant materials
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Specifications:

Color:
Black
Height (in):
1 in
Inside Diameter:
43.4 mm
Length (in):
6 in
Material:
EPDM Rubber
Programming Required:
No
Rim Shape:
Round
Thickness:
0.13 in.
Thickness:
3.4 mm
Weight (lb):
0.38 lb
Width (in):
6 in

Features and Benefits:

  • – A stain around the weep hole is acceptable. However, if a weep occurs with the engine running and the coolant system pressurized, then the water pump should be replaced.
  • – After installation, pressure-test the system for leaks and check for sufficient fan blade clearance between the blade and radiator shroud.
  • – Clean all excess dirt and debris from the water pump housing.
  • – Clean all sealing surfaces, and make sure all old gasket material is removed before installing your replacement component.
  • – Clean and reinstall the coolant recovery reservoir before flushing the cooling system.
  • – Do not use any non-approved flush agents and replace the coolant according to manufacturer's specifications.
  • – Flush the cooling system completely, using power flush equipment or thermal cycling the system with clean water three times. The most effective method of system flushing is to use a coolant exchanger, following the manufacturer's operating instructions.
  • – Inspect for leakage at the water pump outlet housing or the rear cover gasket, and leakage at the water pump vent or weep hole.
  • – Inspect related components in the cooling system, including your fan blades, fan clutch, engine mounts, radiator, belts and hoses, and reservoir.
  • – Never strike the water pump shaft, since this will damage the new water pump.
  • – Run your vehicle to increase engine temperature, and ensure the system is pressurized.
  • – Torque all bolts according to the manufacturer's specifications and adjust belts to proper tension (if applicable) to manufacturer's specifications.
  • – Use sealant tabs only if recommended. Some sealant tabs or similar compounds may restrict coolant flow through the passages of some cooling systems.
  • – With the new pump installed, turn the hub by hand and check for rotation.
  • Before purchasing and installing a multi-purpose o-ring, make sure it is the correct fit for your vehicle.
  • Tips for Water Pump Inspection:
  • Tips for Water Pump Servicing & Installation:

Specifications:

Country of Origin:
JP

Select a vehicle to narrow ACDelco 251-2031 Engine Oil Cooler Line Seal fitment info!

Last Updated: 03/01/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

2003

 

2002

 

2003

 

2002

 
Chevrolet Avalanche 2500

8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

Chevrolet Avalanche 2500



8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500

6.0L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

Chevrolet Silverado 2500



6.0L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500 HD

6.6L V8 Diesel OHV Turbo
1
 
 
Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1
 

Chevrolet Silverado 2500 HD



6.6L V8 Diesel OHV Turbo Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1

1 Per Vehicle

2003

 

2002

 

2003

 

2002

 
Chevrolet Silverado 2500 HD

6.0L V8 CNG OHV
1
 
Inlet
 
ID=43.7
 

Chevrolet Silverado 2500 HD



6.0L V8 CNG OHV

Inlet ID=43.7

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500 HD

6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

Chevrolet Silverado 2500 HD



6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
Chevrolet Silverado 3500

6.6L V8 Diesel OHV Turbo
1
 
 
Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1
 

Chevrolet Silverado 3500



6.6L V8 Diesel OHV Turbo Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 3500

6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

Chevrolet Silverado 3500



6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Suburban 2500

6.0L V8 Gas OHV,
8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

Chevrolet Suburban 2500



6.0L V8 Gas OHV,
8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Sierra 2500

6.0L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

GMC Sierra 2500



6.0L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
GMC Sierra 2500 HD

6.6L V8 Diesel OHV Turbo
1
 
 
Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1
 

GMC Sierra 2500 HD



6.6L V8 Diesel OHV Turbo Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1

1 Per Vehicle

2003

 

2002

 

2003

 

2002

 
GMC Sierra 2500 HD

6.0L V8 CNG OHV
1
 
Inlet
 
ID=43.7
 

GMC Sierra 2500 HD



6.0L V8 CNG OHV

Inlet ID=43.7

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Sierra 2500 HD

6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

GMC Sierra 2500 HD



6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
GMC Sierra 3500

6.6L V8 Diesel OHV Turbo
1
 
 
Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1
 

GMC Sierra 3500



6.6L V8 Diesel OHV Turbo Engine Water Pump Inlet Pipe O-Ring
ID=43.7
FROM RR ENGINE TO INLET PIPE
Eng: LB7
8th VIN Digit: 1

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Sierra 3500

6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

GMC Sierra 3500



6.0L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Yukon XL 2500

6.0L V8 Gas OHV,
8.1L V8 Gas OHV
1
 
Inlet
 
ID=43.7
 

GMC Yukon XL 2500



6.0L V8 Gas OHV,
8.1L V8 Gas OHV

Inlet ID=43.7

1 Per Vehicle

Didn't find a match for your vehicle?

  See Other Choices