Description
The Mishimoto MMHOSE-GM-7U is a purpose-built silicone upper radiator hose engineered specifically for classic Chevrolet muscle cars, replacing the factory rubber hose with a five-layer silicone construction that resists the cracking and collapsing common on decades-old cooling systems. Finished in black and backed by the Mishimoto Lifetime Warranty, this hose is part of Mishimoto’s Classic Line, built to keep vintage Chevelles and Impalas running cool whether they’re daily drivers or weekend cruisers.
Rubber hoses degrade over time from heat cycling, ozone exposure, and coolant pressure, eventually leading to soft spots, bulges, or bursts. This Mishimoto silicone hose addresses that weakness with heat-resistant embedded fibers sandwiched between five layers of silicone, giving it a Performance grade rating and a maximum temperature tolerance of 330°F. For owners restoring or maintaining a classic Chevelle or Impala’s cooling system, upgrading to a silicone hose is a straightforward way to add reliability without altering the factory look, since it installs as a direct, specific-fit replacement rather than a universal hose that needs trimming or guesswork.
Vehicle Applications
This upper radiator hose is a specific fit for the Chevrolet Chevelle 300 and Chevelle 300 Deluxe from 1965 through 1968, the Chevelle Concours from 1967-1968, the 1968 Chevelle Malibu and Nomad, the 1965 Chevelle Malibu Super Sport, the 1966 Chevelle Super Sport 396, and the Chevelle SS 396 from 1967-1968. It also fits the Chevrolet Impala Base from 1965 through 1968 and the Impala SS from 1965 through 1967, making it a versatile cooling system upgrade across this full run of classic Chevrolet models.
Features
- Constructed from five layers of silicone with heat-resistant embedded fibers
- Improves heat and pressure tolerance over the original rubber hose
- Rated to a maximum temperature of 330°F
- Available in black
- Includes two high-quality worm-gear clamps for ease of installation
- Specific fit, Performance grade hose designed for this application
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-GM-7U
- Product Type: Cooling
- Hose Material: Silicone
- Hose Color: Black
- Grade Type: Performance
- Fit Type: Specific
- Maximum Temperature Rating: 330°F
- Clamps Included: Yes
- Purchase Includes: (1) Silicone Hose, (2) Worm-Gear Clamps, Mishimoto Lifetime Warranty
- Recommended Clamp Torque: 22 in-lbs (2.5NM); operating range 18-27 in-lbs (2-3NM); do not exceed 27 in-lbs (3NM)
Frequently Asked Questions
What is the Mishimoto MMHOSE-GM-7U made from?
It is constructed from five layers of silicone with heat-resistant embedded fibers, designed to improve heat and pressure tolerance over the original rubber hose.
What color does this hose come in?
This Mishimoto upper radiator hose is available in black.
Does the hose include installation hardware?
Yes, it includes two high-quality worm-gear clamps for ease of installation, along with the Mishimoto Lifetime Warranty.
What is the maximum temperature rating of this hose?
The hose is rated to a maximum temperature of 330°F.
Which vehicles does this radiator hose fit?
It is a specific fit for the Chevrolet Chevelle 300 and 300 Deluxe (1965-1968), Chevelle Concours (1967-1968), Chevelle Malibu and Nomad (1968), Chevelle Malibu Super Sport (1965), Chevelle Super Sport 396 (1966), Chevelle SS 396 (1967-1968), Impala Base (1965-1968), and Impala SS (1965-1967).
What clamp torque is recommended for installation?
A torque of 22 in-lbs (2.5NM) is recommended for the worm-gear clamps, which have an operating range of 18-27 in-lbs (2-3NM); the maximum torque rating of 27 in-lbs (3NM) should not be exceeded.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
