Performance spark plug wires 10.4mm. Performance spark plug wires size 10.4mm. Compatible with most GMC and Chevrolet engines. Equipped with a titanium heat shield that can withstand up to 2500 Fahrenheit. Prices: Wires without heat shield: 120 SAR Wires with heat shield: 200 SAR 📦 Shipping to all regions of the Kingdom: 20 SAR only For orders and inquiries, contact us via private message.