I.G. Diego Engine and Transmission Rebuilders Inc.

HORRIBLE experience with IG Diego. Full rebuild from them lasted less than 30k miles in under 2yrs on my Toyota Pickup. Their warranty only covers 18 months with no option to extend said warranty. I was having a bad misfire after the rebuild and took it to them for diagnostic. They claimed I was using “bad gas” that caused the failure. I only get gas from Sam’s Club or Chevron, so I knew this was a lie. So after nearly $4000 spent at IG Diego, they said it would cost me another $2500 to repair the motor they rebuilt. I had another shop remove the heads to find the actual cause of failure. IG Diego apparently used the cheapest no-name pistons and rings which had failed in 2 cylinders (pictured). The shop also found that a recent coolant leak came from a hose on the block that IG Diego had

I had a Chevy 250 I6 rebuilt and they've done a good job, so far so good at 5000 miles post rebuild. The engine runs great, huge improvement from how it was before. They pulled my engine and rebuilt it for a very fair price, half the price of anywhere else I called, most of which couldn't even pull the engine. I took the car back for the 1000 miles oil change and they fixed an exhaust leak and rear mean seal leak under warranty, but they did crank my oil filter on like crazy, I had to buy a tool to get it off. I took the car back for a knocking sound and black smoke, which I thought was related. The black smoke was just my carburetor which I've fixed now, and the knock was lifter bleed down which is common these engines, the mechanic told me to run 20w50 and it should go away after a few

In early February 2025, my wife and I found IG Diego Engine & Trans. Inc when we were looking for a place to have the engine of our 2006 GMC Yukon rebuilt. Gabriel and Diego were very helpful on deciding what kind of service our truck needed. We were quoted a price before the engine removal and inspection, but when the mechanics disassembled the engine, they discovered more damage to other internal parts. IG Diego gave us a new estimate and, even though it was a lot more than what we were thinking, we decided to get the job done with them. We liked the fact that they were really clear about the price of the new parts, including the engine block and the labor charges. In just two days, they completely rebuilt the engine and had it running like new. We have had our Yukon since 2008 and we w

I.G Diego shop was great, reliable, and trustworthy, they replaced a head and fixed massive misfire on my 91 Silverado, runs great, I would recommend this shop to anyone with mechanical issues Shoutout from Bakersfield,CA

IG Diego Engine and transmission are my go to for engine service. I have a 2003 Celica with a built 1ZZ, Three years ago I purchased a “professionally built 1ZZ engine from a company called MonkeyWrench Racing”. They promised that the motor would run great, instead the engine leaked, issues with misfire and oil consumption. I looked around for a great engine builder and IG Diego was that. They corrected the issues I had with the previous motor while strengthening it at the same time. The pricing was better and reasonable than shipping my motor back to the MWR for them to “fix it”.