2003 GMC SIERRA 1500 HD Fittings & Hoses

Coolant Crossover Components, LS Steam Vent Adapters, -4 AN, One Single Outlet Adapter, One Dual Outlet Adapter, Aluminum, Black Anodized, Chevy, Set

Part Number: EAR-LS9806ERL

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/9/2026

Fittings, Power Steering Adapter, Straight, Steel, Zinc Plated, -6 AN Male, 3/4 in.-16 UNF-2A, for use on Holley Power Steering Pumps, Each

Part Number: EAR-961961ERL

3.89 out of 5 stars ( 19 )

Estimated Ship Date: Monday 2/9/2026

Coolant Crossover Components, LS Steam Vent Adapters, Fitting Type, Male Swivel Elbow, -4 AN Size, Aluminum, Black Anodized, Chevy, LS, Pair

Part Number: EAR-LS9804ERL

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

Steam Vent Adapters, Coolant Crossover Components, -3 AN Size, Aluminum, Black, Chevy, Small Block LS, Pair

Part Number: EAR-LS9807ERL

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

Coolant Crossover Components, LS Steam Vent Adapters, Fitting Type, Male Swivel Elbow, Dual -4 AN Outlets, Aluminum, Black Anodized, Chevy, LS, Pair

Part Number: EAR-LS9805ERL

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/9/2026

Brake Lines, Flexline, Braided Stainless Steel, Chevy, GMC, Silverado, Sierra, Pair

Part Number: WIL-220-8999

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

Brake Lines, Flexline, Braided Stainless Steel, Chevy, GMC, Pickup, Pair

Part Number: WIL-220-9886

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

Brake Lines, Flexline, Braided Stainless Steel, Chevy, GMC, GM, TC Caliper, Kit

Part Number: WIL-220-8998

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

Tube, Condenser To Evaporator, Chevy, GMC, Cadillac, Each

Part Number: ADO-19418536

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

Oil Cooler Lines, Supply and Return, Cadillac, Chevy, GMC, Kit

Part Number: RNB-625-168

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Mar 2, 2026 if ordered today

• Drop Ship
• Oversize $7.99
• Special Order

Hose, Coolant, 5/8 in. Diameter, 50 ft. Length, Reinforced Rubber, Each

Part Number: ADO-30124

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Automatic Transmission Cooler Line, Each

Part Number: ADO-15812029

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

• Oversize $10.99

Radiator Hose, Molded, EPDM, Black, Cadillac, Chevy, GMC, Hummer, Each

Part Number: CEL-62852

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Brake Hose, Braided Stainless Steel, Front, Chevrolet, GMC, Pair

Part Number: FNL-HSP0001SS

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

• Drop Ship
• Special Order

Brake Hose, Assembled, Rubber, 31.00 in. Length, Each

Part Number: ADO-176-1206

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Vacuum Lines, Power Brake Booster Vacuum Hose, Rubber, Black, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ADO-176-1379

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Oil Cooler Line, Engine Oil, Stock, Each

Part Number: SUG-5801274

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

• Drop Ship
• Special Order

Steam Vent Adapters, Coolant Crossover Components, -3 AN Size, Aluminum, Black, Chevy, Small Block LS, Pair

Part Number: EAR-LS9808ERL

Not Yet Reviewed

Estimated Ship Date: Mar 27, 2026 if ordered today

• Drop Ship
• Special Order

Fuel Line

Part Number: RNB-904-015

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

HOSE ASM FRONT BRAKE

Part Number: ADO-19540521

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

Fuel Line

Part Number: RNB-904-016

Not Yet Reviewed

Estimated Ship Date: Feb 26, 2026 if ordered today

• Drop Ship
• Special Order