Dorman - First Stop Brake Hydraulic Hose P/N:H621789
Keep brake fluid moving from the rigid brake lines to the brake at the wheel with the Dorman First Stop Brake Hydraulic Hose H4000. This flexible hose is precision-engineered to match the fit, function and performance of the original brake hose. It fits many vehicles, among them the 1958-1960 International AB120, 1958-1959 GMC S300 and 1958-1959 GMC S370. See the Buyer's Guide tab for the full list. Depending on the application, it is cataloged for the rear, front-right and front-left positions.
Specifications: 19.5 in overall length, flexible hose, male fittings on both ends, an end 2 fitting inside diameter of 7/16-20, and black in color. The package contains one brake hose. Mounting hardware, a bracket and a gasket or seal are not included. Country of origin: China.
A brake hose may need replacing if the rubber is cracked or swollen, if fluid seeps at the hose or its fittings, or if the pedal feels soft or spongy. Diagnose the cause first, because other brake components can produce similar symptoms. Consult the vehicle service information for the correct fasteners and whether the originals may be reused.
Interchange: 87-46008 · HB-88008 · 150.68008 · 350-71001
8746008 · HB88008 · 15068008 · 35071001 · 18J1 · B917783 · 610111 · 88290 · 88312 · BH412200 · N33726C · TDAA2078A · 2076248 · 48159HA · BH4000 · 2203573 · F4000 · 338889
This part cross-references / interchanges with the following part numbers:
What does the Dorman First Stop H4000 brake hose do?
It is a flexible hydraulic hose that carries brake fluid between the rigid brake lines and the brake at the wheel. It flexes with suspension movement so pressure can reach the brake.
Does the H4000 fit a 1958-1960 International AB120?
Yes. The 1958-1960 International AB120 is a listed application, as are the 1958-1959 GMC S300 and the 1958-1959 GMC S370. Check the Buyer's Guide tab to confirm your exact vehicle.
What are the H4000's key specifications?
It measures 19.5 in overall and is made of EPDM rubber with a rubber outer sleeve. Both ends have male fittings made of treated steel, the end 2 fitting inside diameter is 7/16-20, and the hose is DOT approved.
What is included in the box?
One brake hose. Mounting hardware, a bracket and a gasket or seal are not included, so check the vehicle service information for the correct fasteners and whether the originals may be reused.
What are signs a brake hose may need replacing?
Cracked or swollen rubber, fluid seeping at the hose or fittings, or a soft, spongy pedal may be signs. Diagnose the cause first, because other brake parts can cause similar symptoms.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.