O'Reilly Auto Parts store #3550 in Castle Rock, Colorado is a reliable destination for automotive parts, tools, and services. The store carries a wide range of products and offers free services like battery testing, wiper blade and bulb installation, fluid recycling, and Check Engine light testing. Customers praise the store's cleanliness, organization, and the knowledgeable and friendly staff who are always willing to assist in locating the required components. The store also has a free Loaner Tool program, and customers can get their brake rotors and drums resurfaced on-site. With over 6,000 O'Reilly Auto Parts stores across the US, this location is a convenient option for locals and travelers alike.
Kind hardworking staff. Gentleman that helped us was very friendly and helpful. Would highly recommend!
December 2025
Excellent help and staff at the Castle Rock location. Love the FREE check engine light scanner. diagnosed the problem, they had the part in stock. That did fix the problem. Local repair shop wanted $650.00 cost me $80.00. Staff was helpful friendly and courteous. THANK YOU
November 2025
When shopping at this store ask for Greg… he was outstanding! He went above and beyond for me. Helped me with my fuel pump. I can’t thank him enough! What an incredible man and a wonderful experience. Thank you greatly Greg! Best, Mark
