The Honda 19103-PA0-000 Reserve Tank Hose is a genuine OEM Reserve Tank Hose designed for Honda EB12, EL5000, ES6500, and EX5500 generators, H4514, H4518, H5518, and H6522 tractors, and HT3813 and HT4213 lawn tractors. As a direct Honda OEM component, this hose is manufactured to the exact dimensions and material specifications Honda engineers specified for these machines. Confirm your machine's model and serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and the correct hose varies by production run.
Key Features
- Genuine Honda OEM Construction — sourced directly from Honda, this hose carries the correct inside diameter, wall thickness, and end geometry for a leak-free connection to the reserve tank circuit on every covered model.
- Broad Model Coverage — fits Honda EB12, EL5000, ES6500, and EX5500 generators, including H4514, H4518, H5518, and H6522 tractors and HT3813 and HT4213 lawn tractors.
- Check Your Serial Number — Honda updates part numbers at production breaks, so verify your machine's serial number against the fitment table to confirm this is the correct hose for your specific unit.
- Coolant System Integrity — a cracked or deteriorated reserve tank hose allows coolant to escape the overflow circuit, leading to low coolant levels and the risk of overheating during operation.
The reserve tank hose connects the engine's cooling system overflow port to the coolant reserve tank, allowing excess coolant to flow safely out of the radiator when the system heats up and to return when it cools back down. This keeps coolant where it belongs rather than venting it to the ground, maintaining a stable coolant level across operating cycles. When the hose cracks, collapses, or loses its seal at either end, the overflow circuit is broken — coolant escapes, the reserve tank no longer replenishes the radiator, and the engine is left vulnerable to overheating under sustained load.
Part Details
| Part Number | 19103-PA0-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Reserve Tank Hose |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Compact Tractor | H6522 | All |
| Generator | EB12, EL5000, ES6500, EX5500 | All |
| Lawn Tractor | H4514, H4518, HT3813, HT4213 | All |
| Multi-Purpose Tractor | H5518 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
