Description
The Mishimoto MMHOSE-GM-17U is a direct-fit silicone upper radiator hose engineered specifically for the 1978-1986 GMC C/K Truck equipped with a 305 5.0L or 350 5.7L engine. Built to replace a factory rubber hose that hardens, cracks, and fails with age, this Mishimoto Classic Line hose is constructed from five layers of silicone reinforced with heat-resistant embedded fibers, delivering durability and heat and pressure tolerance well beyond the original equipment hose it replaces.
As part of Mishimoto’s Cooling lineup, this silicone upper radiator hose is a Performance-grade, application-specific part designed to keep coolant flowing reliably under demanding conditions, whether the truck is a weekend cruiser or a daily driver. It arrives in a durable black finish and includes two worm-gear clamps for a straightforward installation, so there’s no need to source hardware separately. Every Mishimoto Classic Line part, including this hose, is backed by the Mishimoto Lifetime Warranty, giving owners of these classic GM trucks a long-term upgrade over degradation-prone rubber.
Vehicle Applications
This hose is a specific fit rather than a universal cooling part, and coverage spans a wide range of GM vehicles built from the late 1970s through 1990. On the passenger-car side, it fits the Chevrolet Camaro Berlinetta (1980-1986) and Sport (1981-1987), the Chevrolet Caprice Classic (1980-1990), the Chevrolet Corvette Base (1979-1982), the Chevrolet El Camino Base and SS (1980-1987), the Chevrolet Impala Base (1980-1985), the Chevrolet Malibu Classic (1980-1983), the Chevrolet Monte Carlo SS (1983-1988), and the Buick Century and Regal (1980). On the truck and SUV side, it covers the GMC C1500, C2500, C3500, K1500, K2500, and K3500 Base models (1980-1986), the GMC Jimmy Base (1980-1988), the GMC Caballero Base and Diablo (1980-1987), and the Chevrolet Blazer Silverado (1987-1988), along with numerous additional Cheyenne, Custom, Custom Deluxe, Scottsdale, Silverado, Sierra Classic, Sierra Grande, and High Sierra trims across the C/K, Suburban, and Blazer lines, with exact year coverage varying by trim.
Features
- Direct fit for the 1978-1986 GMC C/K Truck with a 305 5.0L or 350 5.7L
- Constructed from five layers of silicone with heat-resistant embedded fibers
- Improves heat and pressure tolerance
- Includes 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-17U
- Product Type: Cooling
- Hose Material: Silicone
- Hose Color: Black
- Grade Type: Performance
- Universal or Specific Fit: 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 vehicle is this Mishimoto silicone hose designed for?
It is a direct fit for the 1978-1986 GMC C/K Truck with a 305 5.0L or 350 5.7L engine, and it is also a specific fit for a range of other GM cars, trucks, and SUVs built from the late 1970s through 1990, with coverage varying by trim.
What is the hose made of?
It is constructed from five layers of silicone with heat-resistant embedded fibers, providing greater durability, heat tolerance, and pressure tolerance than a factory rubber hose.
Does this hose include clamps?
Yes, it includes two worm-gear clamps for ease of installation.
What color is the hose available in?
It is available in black.
What is the maximum temperature rating of this hose?
The maximum temperature rating is 330°F.
What warranty comes with this hose?
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.
