Description
The Mishimoto MMHOSE-GM-9U Silicone Upper Radiator Hose is a direct-fit replacement engineered specifically for the 1966-1968 Chevrolet Impala equipped with a 283 4.6L or 327 5.4L engine. Built from five layers of silicone reinforced with heat-resistant embedded fibers, this Classic Line hose is designed to outlast the degradation-prone rubber hose your Impala rolled off the line with decades ago.
Part of Mishimoto’s broader Cooling lineup, this silicone radiator hose is built to handle the heat and pressure cycles that break down old rubber over time, whether your Impala sees daily driving duty or weekend cruise nights. The five-layer silicone construction carries a maximum temperature rating of 330°F, giving your cooling system a meaningful upgrade in reliability without changing the hose routing or look under the hood. Two worm-gear clamps ship with the hose for a straightforward installation, and the finished look comes in black to complement a classic engine bay. As a Performance-grade, vehicle-specific hose rather than a universal Mishimoto cooler hose, it’s purpose-built for this application rather than trimmed to fit.
Vehicle Applications
This Mishimoto silicone upper radiator hose is a specific-fit part for the Chevrolet Impala Base from 1966 through 1968 and the Chevrolet Impala SS for 1966 and 1967, when equipped with the 283 4.6L or 327 5.4L engine. It is not a universal hose and is designed around the factory routing of these specific Impala model years.
Features
- Direct-fit replacement for the 1966-1968 Chevrolet Impala with a 283 4.6L or 327 5.4L engine
- Constructed from five layers of silicone with heat-resistant embedded fibers
- Improves heat and pressure tolerance compared to the factory rubber hose
- Includes two high-quality worm-gear clamps for ease of installation
- Available in black
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-GM-9U
- Product Type: Cooling
- Hose Material: Silicone
- Hose Color: Black
- Grade Type: Performance
- Fit Type: Specific (direct-fit)
- Clamps Included: Yes
- Maximum Temperature Rating: 330°F
- Recommended Clamp Torque: 22 in-lbs (2.5NM); clamps have an operating range of 18-27 in-lbs (2-3NM); do not exceed 27 in-lbs (3NM)
- Package Includes: (1) Silicone Hose, (2) Worm-Gear Clamps, Mishimoto Lifetime Warranty
Frequently Asked Questions
What is the Mishimoto MMHOSE-GM-9U hose made from?
It is constructed from five layers of silicone with heat-resistant embedded fibers, replacing the factory rubber upper radiator hose.
Which vehicles does this silicone upper radiator hose fit?
It is a specific fit for the 1966-1968 Chevrolet Impala Base and the 1966-1967 Chevrolet Impala SS, when equipped with a 283 4.6L or 327 5.4L engine.
Does this hose include clamps?
Yes, the package includes two worm-gear clamps along with the silicone hose.
What is the maximum temperature rating of this hose?
The hose carries a maximum temperature rating of 330°F.
What torque should be used on the included worm-gear clamps?
A torque of 22 in-lbs (2.5NM) is recommended. The clamps have an operating range of 18-27 in-lbs (2-3NM), and the maximum torque rating of 27 in-lbs (3NM) should not be exceeded.
Does this hose come with a warranty?
Yes, it is backed by the Mishimoto Lifetime Warranty.
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.
