“I contacted Green Tech as the first place I contacted never got back to me ? Green Tech made contact with me right away & kept me informed all through the process & also moved me up a day. The techs Gerardo & Antonio very professional & tested everything involved & verified their findings with their techs & shared the findings with me & answered all my questions. After the car started right away & the techs continued the check the system to make sure it working without errors & said they would wait if I wanted to test drive. The whole thing took just over an hour ? Very satisfied ? a Big thanks to the folks at Green Tech ?”
“Joseph from the O’Reilly store in Covina was AWESOME! He went above and beyond to replace my headlight bulb. He was extremely helpful and knowledgeable. I will be going to this store for all my car needs because of the great service I received.”
“I had to get a jump start on my car battery in order for me to be able to drive to O'Reilly Auto Parts in walnut on Amar. The young man whose name is Robert Arrellano was super helpful and very respectful and so courteous. He changed my battery for me and I was so thankful for his help. I wish everyone was like this. Thank you Robert for your help I appreciate you ?”
“Jose and haylee help me alway , both very welcoming! came in last week for battery. I did not know they oreilly do battery install. great service ! save me lot time and money ! thank you Jose for replacing battery , I come again today for wiper blade, thank you haylee for quick install them. you guys amazing! go OReilly ! go Jose! go haylee! I definite come back !- Christina/mike Hernandez!”
“This guys are good. I brought back a battery that died and I couldn't find the receipt. I called and they say I do t need it and they can check it with the battery label. It turns out that my battery was still under warranty and the gave me a prorated price to get a new battery. Thank again for keeping your warranty promise.”
“Located in the Monrovia landing shopping center so there is ample parking, O'Reilly offers a free veri scan service which provides you the ability to scan your engine and find out why your check engine light is on, it's a large auto parts store with a wide array of parts and accessories for all your automotive needs. Staff is friendly and helpful.”
“Customer service was excellent went their to buy all my car needs...thank you to marlinna&Lydia...answered all my questions and was very patient with me even tho I took long and asked alot of questions lol.. very understanding to both of them...???? Merry Xmas...O'Reilly Auto Parts...”
“Alan was very helpful and professional he knew exactly what I was here for without me. Even speaking, he recognized my voice from a call that's a true customer representative”
“Very friendly staff and they do their best to help! Used to poor treatment from other auto parts so I was reluctant to walk in but was very pleasantly surprised with their incredible service. Would recommend this store specifically for anyone needing parts.”
“12/29/25 BRUCE CASHIER KNOWS WHAT IS COSTUMER SERVICE! VERY POLITE AND PROFESSIONAL! HE HELP ME FINDING A AIR FILTER FOR MY TACOMA! HE HAS A POSITIVE ATTITUDE WITH CISTUMERS !! Makes ME COME BACK AGAIN HERE !!! DIANE IS NICE TOO !!”
“Yesterday we purchased a new car battery, and Gabriel kindly helped us install it; we appreciated his assistance, as it spared us a trip to a car mechanic and saved us significant time and cost.”
“Great customer service. First time in this store today, Francisco was very nice and helpful. Left with a good impression of the store, will return again if I need car items.”
“I stopped in because I suspected my battery was not holding a charge anymore. Ricardo came out and tested it immediately, and then looked up my replacement battery amd installed it for me all very quickly and with an outstanding customer service attitude. Thank you, Ricardo, for awesome and quick service.”
“Amazing staff and super helpful, I took my car there because of a leakage and they were nice enough to help take a look at everything quickly. Even though it’s just confirming I should take it in, it’s very helpful on a late Saturday night for someone like me that doesn’t know anything about cars!”
7:30AM - 10PM
4792 Peck Rd, El Monte
Battery Stores
“I went to O'Reilly in El Monte. I just left there.I want to thank KURT for his time and being very helpful to my questions and was very on top of his skills. I give him a 10 ? if there was one! Thank you so much Kurt.”
7:30AM - 9PM
15840 Gale Ave, Hacienda Heights
Battery Stores
“Love getting my odds and ends for my vehicle at O'Reilly especially the hacienda heights location but not if I have to deal with Fernando. He is rude he acts as if he knows my car better than i do. He acts like he is being inconvenienced when I ask about a specific part or brand. Every other employee is very helpful and nice. I don't understand this guy's problem. I feel like its an issue because im a female. Thumbs down to Frenando.”
“The gentleman at the front was very helpful, gave me multiple options for batteries, ended up getting the new vs the refurb battery, quick and easy, thanks for all your help!”