Description
Product Overview
The Gosknor O‑Ring kit is a compact, three‑piece set designed for automotive cooling‑system repairs. Crafted from high‑quality rubber, the O‑Rings resist oil, heat, and wear, ensuring a long service life. The kit includes two large O‑Rings (3.7 cm inner diameter, 4.5 cm outer diameter) and one small O‑Ring (3.2 cm inner, 3.9 cm outer). Finished in a polished black exterior, the parts are compatible with a wide range of Ford models, including Expedition, F‑Series trucks, and Mustang, providing a reliable seal for coolant hose connectors.
Usage
These O‑Rings are ideal for sealing coolant hoses on trucks and performance cars that demand robust thermal resistance. Install them when replacing a radiator hose, repairing an air‑conditioning line, or performing routine maintenance on the cooling system. The kit’s precise dimensions ensure a snug fit, preventing leaks that could lead to overheating or loss of coolant pressure. Suitable for both DIY enthusiasts and professional mechanics, the kit streamlines the repair process and restores system integrity quickly.

Why Choose Us
Gosknor combines engineering expertise with rigorous quality control to deliver O‑Rings that meet OEM standards. Each ring undergoes tensile strength testing and dimensional verification, guaranteeing a perfect fit and consistent sealing performance. The rubber compound is formulated for high elasticity and resistance to automotive fluids, reducing the risk of cracking under temperature fluctuations. Backed by a 5‑star customer rating, this kit offers confidence and value for every repair.
Key Features
- Premium rubber construction for oil and heat resistance
- Three precisely sized O‑Rings for versatile coolant hose applications
- Polished black finish for easy visual inspection and fit verification
- Compatible with major Ford models from 2011‑2018
- Includes both large and small rings to cover multiple connector sizes
FAQ
What vehicles are compatible with this O‑Ring kit?
The kit fits Ford Expedition (2015‑2017), F‑150 (2011‑2018), F‑250/350/450/550 Super Duty (2011‑2018), and Mustang (2011‑2018) among others that use the specified O‑Ring dimensions.
Can I use these O‑Rings for air‑conditioning lines?
Yes, the O‑Rings are rated for both coolant and air‑conditioning hose connections, providing a reliable seal against fluid leaks.
How do I install the O‑Rings correctly?
Clean the hose connector surface, lubricate the O‑Ring lightly with compatible coolant fluid, then press the ring onto the groove until it seats fully. Ensure no twists or folds for an even seal.
Are these O‑Rings reusable?
While the rubber is durable, it is recommended to replace O‑Rings during each hose service to maintain optimal sealing performance.
What warranty does Gosknor offer?
The kit comes with a limited one‑year warranty covering manufacturing defects, reflecting Gosknor’s confidence in product quality.






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