Explore Toyota 4 Runner Vehicle Door Systems In Canada & Toyota 4 Runner Door Knob Parts Replace Toyota 4 Runner Door Components Replacement. Maintaining your Toyota 4Runner's car door components, such as hinges, handles, and locks, is vital for vehicle integrity and passenger safety. Regular lubrication prevents rust and wear, while alertness to stiffness or squeaking can signal the need for replacement to uphold functionality. Choosing the right components hinges on compatibility and quality, with options like OEM for guaranteed fit and aftermarket for cost-efficiency. High-grade materials like stainless steel ensure durability, and when installing, clean mounting areas and proper alignment are key to seamless operation. Shop with us for a curated selection of door components that ensure your 4Runner stays in top form.