FLEXTECH Hose Reducer: 3 1/4 in_4 in Hose Inside Dia., 3 in Hose Lg, Blue, Silicone
The FLEXTECH Hose Reducer (MPN R40-325/400) is a blue silicone SAE J20 heater hose reducer with a 3 1/4 in to 4 in inside diameter and 3 in length. It is constructed from silicone tube and cover materials, rated for…
SKU 3G-OTH-457299
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Product Description
The FLEXTECH Hose Reducer (MPN R40-325/400) is a blue silicone SAE J20 heater hose reducer with a 3 1/4 in to 4 in inside diameter and 3 in length. It is constructed from silicone tube and cover materials, rated for a temperature range of -65° to 350°F.
Frequently Asked Questions
What is a FLEXTECH silicone hose reducer used for?
A FLEXTECH silicone hose reducer connects two different-diameter heater hoses in automotive or industrial cooling systems. It handles temperature extremes from -65° to 350°F and resists degradation from coolant, making it suitable for engine cooling, turbocharger, and charge-air applications.
What are the specifications of the FLEXTECH R40-325/400 hose reducer?
The FLEXTECH R40-325/400 is a blue silicone SAE J20 heater hose reducer with a 3 1/4 in to 4 in inside diameter and 3 in length. It has silicone tube and cover materials, rated for -65° to 350°F. The manufacturer part number is R40-325/400.
Where to buy FLEXTECH hose reducers worldwide?
3G Electric supplies FLEXTECH hose reducers like the R40-325/400 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this silicone SAE J20 reducer.
How to install a FLEXTECH silicone hose reducer?
To install a FLEXTECH silicone hose reducer, ensure both hose ends are clean and dry. Slide the reducer onto the smaller hose, then push the larger hose over the reducer. Secure with appropriate clamps. Avoid over-tightening to prevent silicone damage. Follow SAE J20 installation guidelines for best results.
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3G Electric supplies FLEXTECH silicone sae j20 heater hose reducers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









