Mercedes 450SLC Heater Hose Parts

Showing 2 out of 2 part(s) found in our catalog.

Narrow Down Your Search By...
Filter search results specific to your vehicle.
Keyword
Keyword
Mercedes 450SLC
Category
HVAC
Subcategory
Heater Hose
Subcategory
Can't Find What You Need?
Mon-Fri 8-4 MST/PST (Arizona Time)
Contact Us
Sort By:
Step-down type hose, two different size openings. 1 per car.
1976, 1977, 1978, 1979, 1980 Mercedes 450SLC
Ships Today
Ships Today Information Icon
Leaves closest warehouse today if ordered before 2 PM MST.
$2.69
Reg
$2.80
List
$64.00
1 per car.
1973, 1974, 1975, 1976 Mercedes 450SLC
Ships Today
Ships Today Information Icon
Leaves closest warehouse today if ordered before 2 PM MST.
$9.09
Reg
$9.47
List
$30.00

Mercedes 450SLC heater hose typically cost between $2.69 and $9.09.

What Causes Leaks In The Mercedes 450SLC Heater Hose?

A leak in the Mercedes 450SLC heater hose usually comes from tired rubber or splits near bends and clamps. Years of heat, coolant, and pressure break the hose down, leaving it brittle or cracked. Clamps can dig in if they’re too tight, and coolant can start to escape right at the end of the hose where the seal should be tight. Sometimes, cheap coolant speeds up the hose's decline, changing the feel and look of the rubber. If you spot a puddle under your car or your coolant drops for no clear reason, check the hose for trouble. Watch for aging, swap hoses that look worn, and keep the system fresh to dodge bigger repairs later.

How Do I Replace The Mercedes 450SLC Heater Hose?

Changing a Mercedes 450SLC heater hose doesn’t call for special gear. Wait until your engine cools, then let the pressure out by loosening the radiator cap. Drain enough coolant so it won’t spill as you work. Take off any covers, and loosen the clamps on both sides of the bad hose. Twist the hose gently and pop it free. Check that your new hose matches for length and diameter before sliding it into place. Tighten the clamps—snug, not crushed—then pour back your coolant. Let the engine warm up, and check for leaks where the hose sits. Make sure all the pieces look right before you drive.

Which Hose Size Fits A Mercedes 450SLC Heater System?

For the Mercedes 450SLC heater hose, most use a 5/8-inch inside diameter. Newer or older models might vary, so it pays to double-check. Sometimes, measuring the old hose gives you a better match, since shrinkage or swelling from age can fool you. Never trust guesswork—check diagrams if you can or ask at a good parts counter. If the hose slides on with too much give or fights the clamp, it’s wrong. Get the size right to avoid leaks and sudden drops in pressure while you’re out on the road.

What Type Of Coolant Should Be Used With The Heater Hose?

Stick with a phosphate-free, ethylene glycol-based formula if you want your Mercedes 450SLC heater hose to last. Mercedes built these cars with certain coolants in mind, and skipping the right mix can speed up hose cracking or even clog the system as chunks form inside. Go for a 50/50 mix of coolant and distilled water so you get the balance between cold and heat protection. Don’t forget to flush and refill at the recommended times—old coolant wears down hoses faster than you think, and can bring rust or scale, too.

How Do I Diagnose Heater Hose Issues In The Mercedes 450SLC?

Spotting heater hose trouble on a Mercedes 450SLC starts with a careful look. Search for wet patches, cracks, or stains where the hose runs. Let the engine cool, then squeeze the hose—soft or mushy spots mean it’s near the end of the road. Sometimes you’ll hear a faint hiss when the car is warm, tipping you off to a slow leak. If your heater isn’t working, the hose might have a blockage you can feel by hand, with one spot cooler than the rest. Don’t wait on these signs—a bad hose left alone can push your car into overheating before you know it.

Why Buy Your Mercedes 450SLC Heater Hose From Us?

Pick up your Mercedes 450SLC heater hose here, and you’ll notice right away we don’t play games. Orders move out the door fast. Prices stay low, and you won’t find surprise fees. If you run into any problems, we handle returns without the back-and-forth. We know how much you rely on your car, and that’s why we keep it simple—with good value, no fuss, and the right part the first time. We’re here so your Benz runs strong, no headaches needed.