1 5/8" Radiator Hose Adapter with Reducers

• Rubber adapter steps hose diameter down from 1 5/8" to 1 1/2" or 1 1/4"

• Hose clamps included for all connections — no separate clamps needed

• Universal fit for radiator or heater hose runs needing this diameter step-down

• Flexible rubber construction handles engine bay heat and movement

This rubber radiator hose adapter steps hose diameter down from 1 5/8" to either 1 1/2" or 1 1/4", using two included reducers to give custom cooling system installations flexibility in matching mismatched hose sizes. Hose clamps are included for all connections.

This is a universal-fit adapter with two reducer size options — choose whichever reducer (1 1/2" or 1 1/4") matches the smaller hose in your installation. Rubber construction provides sealing flexibility and accommodates normal engine bay movement and heat cycling.

Sizing Options
This adapter steps down from a 1 5/8" hose connection to either a 1 1/2" or 1 1/4" hose, using the two included reducers. The two reducers are alternate size options — choose whichever matches the smaller hose in your installation; they're not intended to be used together on the same connection.

Installation
Push each hose fully onto its matching adapter or reducer end before clamping. Hose clamps are included for all connections, so no separate clamps need to be sourced.

Do I use both reducers at the same time, or choose one based on my application?
Choose the reducer that matches your installation. The kit provides 1 1/2" and 1 1/4" reducer options for connecting a 1 5/8" hose to different-size ports. They are alternative sizes and are not intended to be stacked together on the same connection.

Does this include hose clamps?
Yes — hose clamps are included for securing the connections.

What is this adapter typically used for?
It's used to connect a 1 5/8" cooling-system hose to a smaller 1 1/2" or 1 1/4" connection, making it useful with flexible hose kits, custom radiator plumbing, and other cooling-system components with different port sizes.

Can this be used for heater hose as well as radiator hose?
Yes, provided the connection sizes match. It's suitable wherever a cooling-system hose needs to transition from 1 5/8" to either 1 1/2" or 1 1/4". Since heater hoses are typically smaller, verify your actual hose and port diameters before ordering.

What material is this adapter made from?
The adapters are made from black rubber.