Installing Silicone Radiator Hoses!




Introduction: Installing Silicone Radiator Hoses!

For the longest service life and best reliability, silicone radiator hoses are king. Here is how I installed these on my car.

Step 1: Removing the Old Rubber Hoses.

My old hoses use hose clamps to keep them in place. The rubber actually bonds a bit to the metal Coolant ports. Getting them off takes some hand work. Once off I put them aside with the hose clamps. Those clamps cannot be used with silicone hoses.

Step 2: Installing the New Silicone Hoses.

This hose combo I got off for my Honda civic 1999. It cost 75usd. Tbolt clamps are needed and were purchased separately off

The new hoses slipped on easily and the clamps were used to secure them.

Step 3: Filling Coolant.

I filled the reservoir then the radiator through the pressure cap port. Once full I started the engine and let her idle till the fan came on. I kept Topping off the Coolant in the radiator then put the cap back in place once no more could be added.

Step 4: Completion.

While the car was running I carefully monitored for any leaks. None were detected and I'm pleased with my work.

Now my car has new silicone radiator hoses that should given me long service life!

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    6 years ago

    Nice upgrade. Silicon is always better, but having owned a radiator shop, I know that they may not pencil out for the average car owner ... cost-wise.

    Most people sell or trade in their vehicles every 40 months on the national average and some just lease or are supplied a company car, so silicon hoses are serious overkill.

    The biggest problem I had with customers was to get them to change out their coolant on a regular basis. And I mean A REGULAR BASIS. Every two years max, and if the car is driven short hops, then every Fall, like it or not. An underdriven car is dying from lack of full running heat, which kills the oil, coolant and is murder on the exhaust system.

    Show me a vehicle with a replaced muffler/tailpie/cat/header and I can guarantee the cooling system is dying too.

    Change the radiator cap every couple of years or have it tested (yes - there's a test for the cap!)

    For myself, I have two older vehicles. One is a 1986 Chevy Blazer K1500 with original belts and hoses and 310,000 miles - alas with a new radiator when I got a shovel kicked up on the freeway and it speared my grill.

    The other oldie is an Isuzu Amigo, 1989 with 436,900 miles and original hoses, radiator and at least two original belts.

    The last is a 2000 ASTRO 4.3 with 240,000 miles and I changed out one heater hose and GM's nasty quick connect fitting, but the serpentine belt I did twice.

    The secret is like I saiid: change the coolant on a regular schedule, replace the radiator cap and those pesky spring clamps on the hoses, which are the best thing for keeping constant tension on the connections.

    The screw-type hose clamps are usually over tightened by zealous - dare I say: "mechanics", who don't know their own strength or use power tools to install them. Then they cannot compensate as the hoses squish out from under them and they get looser and looser.

    Those cars were my best customers though, so I'm not complaining.

    As it is - I cannot advise on the expense of Silicon hoses unless one wants a talking point at their weekly poker game.

    But the sure are pretty!


    Reply 6 years ago

    I agree they are expensive. My car is 1999 manufactured and I have no intention of selling her. To me the the upgrade is worth it. I change the Coolant every 8 months to have the system happy.