Ball'z Diesel is simply.. THE BEST! From service, pricing, honesty or just customer service; Ralf and his crew are great! I have lived in Corona for the past 3 years and have been going to Ralf for about 8 months with just about every issue that my truck comes across. I wish I found his shop sooner. I refer all of my friends who own diesel trucks to go to him. He is worth it. Thank you Ball'z Diesel! read more

After 20 years my Chevy 2006 2500HD Diesel just had to have some repairs. Based upon a local recommendation I went to Ball'z. They were fair, quick to identify the problems, showed me the problems and laid out the options. All up front. All direct interaction. Always accommodating and communicative. I want to thank Ralph and his daughter for the treatment and the quality job. It's hard to pay for repairs after 20 years with a truck that had so few. But I am glad I met these people to do the work. read more

Ralph and his guys made my 2005 F350 drive like a brand new truck. The front end was shot, braking system a reck and i had a leak coming from the rear differential seal. Considering all the work they did on my truck i feel the cost was okay. It wasn't a small job. My thanks again to Ralph and his hard working mechanics! For my future needs i will definitely be going back! read more

Ralph and his team are amazing they got me on the road the same day at a reasonable price.

Had my 2002 Duramax worked on multiple times here. Very honest and very fast! Top notch! read more

Took my truck in for a CP4 failure. The work was done on time and got my truck running like new. Very professional

Took my 05 Dodge Cummings There and I notified him that the truck was sucking oil And I think the turbo is bad And there was two bolts broken on the exhaust manifold He assured me that the Turbo was not bad, he charges me $2800 to Fix the post bottles in my Exhaust manifold they put the same Warped header back on my truck, I end up taking it to another Diesel mechanic shop. They replaced the Turbo which was bad and sucking oil. And a new exhaust maniFold for $2400 Ralph does not know what he is doing and neither does his guys both times I went on a test drive with him The smell of alcohol on his breath was very strong like a brewery and he is obviously an alcoholic, I would never take your diesel to the shop, especially if you rely on it for work. Weather complete waste of money And time ( Ralph is a crook do not take your diesel to This shop) read more

Ralph did an amazing job with our cars. Very honest and upfront with no bs. We have taken all of our cars there from diesel trucks, gas trucks, sports cars and have been more than satisfied every time. We will continue to support his business in the future. He is the only mechanic we will use. read more

These guys don't know their heads from their asses. Nice guys! Don't get me wrong. The added star is because everyone was so nice. Dropped my ram off for loss of power assist brakes and no brake lights. Few other minor things. 2 weeks go by no word. I call back, more time needed. I call back, nice gentleman says they should have figured it out by now. Is frustrated for me and understanding. Another week, I'm able to pick up. A month later. 800 bucks. Brake signals work, brakes are, somehow worse? And now my air conditioning doesn't work. I look under to find the blower motor wire cut. I reattach and AC works again. My personal experience. I'd head down to norco and give that shop a try. read more

Best mechanics around! Period!!! Worked on my 6.0 power stroke, my 7.3 power stroke and my 6.7 Cummins never any problems

Had to pull my truck from Hemborg Ford after they started to over charge me, misdiagnose the problem, and sit on my truck for two weeks. Ballz Inc was fast and my truck was done ready to pick up after two days. None of this two week later Hemborg crap going on here. Truck had a snapped fuel sending unit in the tank, an accelerator sensor problem, shocks, steering column shift indicator adjustment, and a complete front end rebuild. I have a feeling that Hemborg would have milked this for a solid month and 10k. Thank you to Ballz Inc for getting our family fun workhorse back in solid working order. read more

I had my truck towed there and within a few hours they had the issues diagnosed with a quote.The shop has the knowledge to get the job done right and will make you feel comfortable every step of the way. We drove away with the same power as when I drove it off the lot at purchase, like a new truck all over again. Thanks again. read more

Ball'z are awesome. They know their stuff and pricing was fair. I still have more work I need to have done and will be going to ball'z to get it done read more

I have a 2005 Ford Excursion 4x4 Diesel 6.0. I took it to RALPHIE, he rebuilt my transmission ran through my engine and pointed out a lot of defects that other mechanics had done to my truck. RALPHIE replaced/repaired a lot with my truck. He is honest, knows Diesels, and is dependable. My truck runs strong and dependable. I just got back from Utah I'm glad to say, we were able to hold 80 to 90 all the way to Utah and back. Truck ran tough in the snow. My Excursion is a daily driver, I can cruise or step on the pedal and smash from light to light chirping tires. THANKS RALPHIE!!! read more

Great shop. I brought my 06 F350 with some issues, I ended up having the truck Bulletproof with them. They did a great job and the price was reasonable. They warranty their work all the time. I recommend this for all the diesel truck out there. Keep up the great work guys. read more

Worst place we ever had our truck to. Came out with the same problem it had when I brought it in. Owner was real rude. Now my truck keeps breaking down. Beware!!!! read more

Horrible place!! Stay away from this shop. They don't warranty NOTHING they do, don't stand behind any worked on issue's. STAY FAR AWAY!!!!

I had an exceptional experience from management and staff. They not only diagnosed and fixed the issue, the bill was very reasonable. It was actually a very enjoyable experience. Thats not normal when you are getting your vehicle fixed.... ; ). I cannot recommend them high enough. read more

Don,t wast your time with this group! Been there 4 times at the recommendation of another business in the center. 4 times to have a full diagnosis. The excuses each time, I'm leaving to the river, I,m working on my own truck. come back another time. The last time 2 mechanics sitting at the dest, no owner. seems as though no one cares. Absolutly ZERO customer service. I wish I could give NO stars. I hate to emagine how I would be treated had they done work to the truck and I had to come back. Well The search will continue! read more

Ball'z shop is always on time and honest that's all I need out of a shop! Never had go backs!!!

The best diesel shop in So Cal. Ralph does exactly what he says he will do. I had a few oil leaks on my F250 and they took care of everyone of them. I'm very happy with the service they provide... read more

Ralph is a great guy to work, very professional. I would recommend all you diesel guys give him a try. Great staff as well.

Best diesel shop in the IE. Great customer service. I recommend for anyone that needs a diesel mechanic.

So there is a laundry list of things I'd like to complain about for this shop I will note the one good thing before rip into the laziness and just straight "who the fuck does that" that I'm now going through. The shop honors the warranty even if the truck was sold. Not that I ever want to take it back because this place is a heap of shit. My truck ate up a left over needle bearing. New lifters were installed but due to the shop not doing something as simple as an oil change it ate the remnants of the old lifters and killed my low oil pressure pump. The current shop that is fixing it has found multiple issues with this shops work like using silicone and not the proper gaskets. Never ever will I recommend this shop, the current shop my truck is at in signal hill has been allowing me to go in everyday and check out the truck dude to the massive trust issues I have because of this shops work. I mean this is can go on with the fact they used a made in China oil filter vs a ford one.. There is also the fact that they didn't even make an attempt to try and correct the fact that wires were exposed. Or the cheap made in China water pump. Don't waste your time with them. read more

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A great Ford machanic that knows his stuff. Very fair priced, doesn't try to retire off one job.

Ball'z inc is a great automotive shop in corona. My family takes all of our cars to them. They are fairly priced and get the job done fast. I have dropped my car off in the morning and had it back the same day before. All employees are knowledgeable and friendly. Highly recommend this shop. read more

Great customer service, and affordable. At the time my EGR valve went out on my 6.0 and I didn't know what was wrong and was referred to Ball'z after talking to a buddy. I am sure glad I went there instead of Ford because they got the job done. Ball'z was able to trouble shoot, find the problem, fix it and get it back to me before the end of the day and gave me a better warranty, part and cost than Ford did.. Thanks guys I will be referring all my diesel friends to you 100%. read more

Bought a truck from a lady that had just had the transmission rebuilt from this place along with new brakes supposedly and a lot of other work that was supposed to have a warranty. When I called because the truck was having transmission problems the guy told me the warrantee was not valid because he did the job too cheap for the lady. He also told me everything was great when he was done with the truck but all of the issues I pointed out to the previous owner she told me it had been like that since even before the transmission was rebuilt. New brakes were said to have been put on the front but only brake pads were changed. Still had the old rotors that were warped and never even turned. Transmission looks nice like it was painted but it is going to have to be taken to a real shop and rebuilt properly. It's a shame people like this are out there screwing people over and taking their hard earned money read more

This place is great!!! I bought a 2005 Ford F350, crew cab dually a month ago from a local dealership. The dealership uses Ball'z exclusively for diesel repair. I had cold running issues that were difficult to diagnose at the shop so Ralph, the owner of Ball'z, came to my house on a Saturday morning to diagnose the issue while the truck was cold. He found the problem and promptly set an appointment for repair. He went above and beyond and the truck now runs great. Kudos to Ralph and Frankie for being prompt, honest, transparent in all repairs, and generally nice people to work with. Nice words to Corona Autoplex as well, and I will comment on their page as well. For diesel needs, this is the "go too" place.................... read more

My truck was repaired on 1/15/2018.......I have a 2011 Ford Lariat diesel 4 dr dually with 164,000 on it, with all the places ( Dealer $$$$, other shops $$$ ) that I could have taken it to or I should say had it towed too, I chose Ballz , I spoke with them on the phone pior as well as looked up history and spoke to a few others about my truck and about Ballz. Well I want to say that I feel much better that I had it towed there and fixed . Ralph called me with in an hour of the truck and I getting there and told me that he had it diagnosed , as I listened to what the problem was and how he was to fix it, I admit I was worried about the cost and time it would take to repair, Very impressed with his diagnose of the problem but much more happier to know that I could have it fixed with in the same day and I could have my truck back that afternoon repaired and I still had money left in my bank account. Like I said ,this was my FIRST TIME at Ballz and I am TRULY HAPPY I had my truck towed to there shop to have it repaired . Remember this next time your truck gets towed..... "I've been in automotive industry and There is nothing better that a shop likes is a truck being towed in....You are at their mercy , worried about the cost"..... I recommend Ballz for their honesty, Integrity , confidence in their ability to diagnose and fix the problem right the first time as well as price competitively fair in the business . I will be back for regular maintenance and repairs as needed .Thank you to Ralph , Frank, Freddy. read more