Rubber Marine Exhaust & Coolant Hose - MRN

These hoses can be used in a variety of engine coolant applications from trucks, buses, industrial machines, or heavy equipment. We stock a wide range of sizes as well as accompanying clamps to keep you moving!

This is a medium duty, fully interlocked stripwound hose that is commonly used for high temperature automotive/truck, marine, and industrial "dry" exhaust, carburetor air intake, high temperature fum...

NL3690 - Galvanized Unlined Interlock Metal Dry Exhaust Hose (.018)

15 Items

This is a medium duty, fully interlocked stripwound hose that is commonly used for high temperature automotive/truck, marine, and industrial "dry" exhaust, carburetor air intake, high temperature fum...

NL3695 - Stainless Unlined Interlock Metal Dry Exhaust Hose (.018)

10 Items

NL4905 is suitable for heater and coolant applications (see our NL4875 for stock on smaller sizes). It will remain flexible and ageless after prolonged exposure to extreme temperatures, weather, or o...

NL4905 - 3-Ply Blue Silicone SAE 20R1-A Coolant Hose

28 Items

NL4915 is suitable for high tempurature heater and coolant applications (see our NL4875 for stock on smaller sizes). It will remain flexible and ageless after prolonged exposure to extreme temperatu...

NL4915 - HI-Temp Blue Silicone Coolant Hose with Kevlar Reinforcement

21 Items

These reducers or transition step hoses are 6" long and designed for coolant applications with varying end connections. They meet SAE 20R1 and TMC RP303B Class 1 Grade 2 requirements. When installi...

NL4915R - HI-Temp Silicone Coolant Hose Reducers/Kevlar Reinforcement

17 Items

NL4920 preformed silicone elbows are suitable for heater and coolant applications where tight bends are required without kinking. During installation, the 6" legs can easily be cut to length with a ...

NL4920-45 - Preformed 45° Blue Silicone Elbows

12 Items

NL4920 preformed silicone elbows are suitable for heater and coolant applications where tight bends are required without kinking. During installation, the 6" legs can easily be cut to length with a ...

NL4920-90 - Preformed 90° Blue Silicone Elbows

13 Items

NL4930 is for use on marine wet exhaust systems and meets or exceeds SAE J2006 R1 requirements. It comes in straight 3ft lengths but is also available in shorter "humps" or "bellows" (see NL4936 / NL...

NL4930 - Blue Silicone SAEJ2006R1 Marine Wet Exhaust Hose

20 Items

These are specifically for use on marine wet exhaust systems as a short, flexible connector, also known as a hump or bellows, to accommodate minor offsets or to absorb movement, vibration, and noise....

NL4936 - Silicone Marine Wet Exhaust Hump & Bellows (Single Hump)

5 Items

These are specifically for use on marine wet exhaust systems as a short, flexible connector, also known as a hump or bellows, to accommodate minor offsets or to absorb movement, vibration, and noise....

NL4937 - Silicone Marine Wet Exhaust Hump & Bellows (Double Hump)

8 Items

Available in a wide range of sizes, NL4940 Multi-Flex is a versatile, extremely flexible hose that can be used for fuel fill (exceeds SAE J1527 USCG Type A2 requirements), fuel vent, marine wet exhau...

NL4940 - Nitrile MultiFlex SAE J1527 Type A2 Fuel Fill

24 Items

NL4955 green stripe is a heavy duty, high pressure, high temperature radiator hose (or in the smaller sizes it is commonly used as a heavy duty heater hose) that is suitable for machinery, automobile...

NL4955 - Heavy Duty Industrial Radiator & Marine Wet Exhaust Hose

34 Items

This is used in similar applications as our heavy duty NL4955 Industrial Coolant & Marine Exhaust Hose, however this NL4960 provides a competitive alternative to lower cost, lighter duty, lower PSI b...

NL4960 - Marine Wet Exhaust & Coolant - Softwall

25 Items

NL4970 is a flexible, low pressure, hardwall corrugated coolant and marine wet exhaust hose (meets or exceeds SAE J2006 type R2) that provides a tighter bend radius and lower "effort to bend" as comp...

NL4970 - Marine Wet Exhaust & Coolant - Corrugated Hardwall R2

15 Items

NL4975 is a hardwall marine coolant and wet exhaust hose that is less flexible than our NL4940 Nitrile Multi-Flex or NL4970 Corrugated Marine Coolant/Exhaust. It is NOT designed for use with petroleu...

NL4975 - Marine Wet Exhaust & Coolant - Smooth Hardwall R1

20 Items