Silicone Radiator Hose Kit for Ford Mustang (1964-1968) 4.7L 5.0L

High-Temp Silicone Radiator Hose Kit for 1964-1968 Ford Mustang (Gen 1)

What it Does: The Silicone Radiator Hose Kit replaces deteriorating factory rubber coolant hoses on the 1964-1968 Mustang to resist thermal degradation and prevent high-pressure coolant blowouts.

The Stock Ford Mustang Cooling Weakness

OEM-style EPDM rubber hoses paired with classic Windsor V8 engines degrade rapidly due to continuous thermal cycling, oil exposure, and electrochemical degradation (ECD). Over time, factory rubber hardens, stretches, and develops micro-fissures along the radiator necks and water pump housing. Under operating pressures, degraded stock hoses risk softening and ballooning or splitting along stress points, leading to sudden coolant evacuation and catastrophic cylinder head warping.

The Engineering Solution

This cooling upgrade features heavy-duty 3-ply polyester-reinforced silicone with a consistent 4.5 mm wall thickness designed to maintain structural rigidity under peak engine bay temperatures and fluctuating pressure spikes. Silicone withstands operating temperatures up to 350°F without dry-rotting or hardening. Pre-formed to exact factory routing for the 289 and 302 small blocks, the kit provides full coolant flow through upper, lower, and critical water-pump bypass passages, secured by heavy-gauge stainless steel worm-drive clamps.

What's Included

• 1x Upper Silicone Radiator Hose (Black, 3-ply, 4.5 mm wall)
• 1x Lower Silicone Radiator Hose (Black, 3-ply, 4.5 mm wall)
• 1x Thermostat Bypass Silicone Hose (Black, 3-ply, 4.5 mm wall)
• 6x Stainless Steel Worm-Drive Clamps

Technical Specifications

Compatibility

• 1964-1968 Ford Mustang 4.7L (289 ci) Windsor V8
• 1968 Ford Mustang 5.0L (302 ci) Windsor V8

Frequently Asked Questions & Fitment Warnings

Does this fit the Gen 1 Mustang?

Yes, this is a direct fit for the 1964-1968 Ford Mustang equipped with the Windsor V8 (289 ci and 302 ci). It does not fit Inline-6 engines (170/200 ci) or FE Big Block V8 configurations (390 ci).

Do I need to bleed and pressure-test the cooling system after install?

Yes, drain the system completely before removal, seat all hoses fully, clamp securely, refill with fresh coolant, and pressure-test to confirm a leak-free seal.

The Ford Muscle Caliber

Engineered to handle the thermal demands of high-compression classic muscle, this silicone hose kit ensures your small-block Ford stays cool under aggressive street and track driving.