Working Hours
  • Mon 8:00AM - 6:00PM
    Tue 8:00AM - 6:00PM
  • Wed 8:00AM - 6:00PM
    Thu 8:00AM - 6:00PM
  • Fri 8:00AM - 6:00PM
    Sat Closed
  • Sun Closed
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Heavy Duty Services: Engine Overhaul & Replacement

For the big jobs, take your vehicle to Giant Oak Automotive! Our expert services are ideal whether you have a late model import or newer domestic vehicle. And because we guarantee the work we perform, you can rest assured you are receiving the highest quality engine overhaul and replacement services in the Newbury Park, CA 91320 area.

Our heavy duty services include:

Authorized Jasper Dealer
Give Your Vehicle a New Lease on Life with JASPER. That big oil slick in your driveway or those strange noises from under your hood don't have to mean you'll be saddled with a new car payment soon. Instead, your trusted installer at Giant Oak Automotive can drop in a completely remanufactured JASPER gas or diesel engine, transmission or differential and get you back on the road again quickly! Call Giant Oak Automotive at 805-375-3117 to schedule an appointment. Proudly remanufactured in the U.S.A.

Cylinder Block
A cylinder block is the powerhouse for the motor vehicle. The solid cast car part houses the cylinders and their components (gaskets, valves, and seals) inside a lubricated and cooled crankcase. Since it is one of the most important parts of your car, the block is designed to be extremely strong and sturdy. Although strong and sturdy, the block is susceptible to failure resulting in a vehicle that won't start. Cracked blocks, porous blocks, core plug, or freeze plug failure are some of the problems facing cylinder blocks. Call 805-375-3117 to talk to the mechanics of Giant Oak Automotive about your cylinder block problems.

Cylinder Head
A cylinder head is the closed end of a cylinder (located in a car's engine block). It sits above the cylinder block, closing the top of the cylinder and forming the combustion chamber. The cylinder head coordinates airflow in and out of the engine. Since the cylinder head's chief function is to seal the cylinders properly, insufficient compression results in the car being difficult to drive. To have your cylinder head checked and repaired, talk to Giant Oak Automotive's cylinder head repair and reconditioning specialists today.

Diesel
Although diesel engines don't require tune-ups and tend to last longer than gasoline engines, they do require regular maintenance. Typical maintenance tasks include:

  • Changing the oil & filter
  • Changing the air filter
  • Changing the fuel filter
  • Bleeding the fuel system
  • Draining the water separators
  • Refilling the urea injection system

You can count on the experts at Giant Oak Automotive to help your diesel engine last a long time.

Engine Maintenance
Any car part manufacturer will tell you that preventive maintenance is critical to the part's lifespan. Like other auto parts, car engines aren't built to last forever. However, you can increase the engine's lifespan by performing regular preventive maintenance. The easiest way to maintain peak performance and fuel economy is to provide regular engine maintenance for your vehicle. To have your engine maintained by experts, visit Giant Oak Automotive.

Engine Repair
When your vehicle shows any sign of trouble, bring it to Giant Oak Automotive for full-service engine repair in Newbury Park, CA. From diagnostic check engine light repair to precision engine part repair, our expert auto mechanics are ready to help you.

Engine Repair and Rebuild
After years of use, your car's engine inevitably deteriorates. If you car needs a new engine and you are not ready to invest in a new car, consider having the engine rebuilt. This involves replacing or resurfacing all the rundown parts in an engine. Regardless of your engine replacement needs, Giant Oak Automotive has experienced engine rebuilders ready to assist you.

Engine Replacement
The engine converts energy into useful mechanical motion. This amazing machine is what keeps your vehicle moving. Although generally reliable, a car engine is susceptible to damage and breakdown. When this happens, do not sit and stress over it. Take action. Take the vehicle to a mechanic for an engine replacement. Bring it to Giant Oak Automotive. Visit us at 300 Giant Oak Ave
Unit A for quality engine replacement services.

Timing Belt
A timing belt is a part of your car's internal combustion engine. The belt synchronizes the camshaft and the crankshaft rotation so that the engine valves open and close at the correct timings. Also, the belt prevents the piston from striking the valves in an interference engine. A timing Belt is a rubber belt that usually features teeth on the inside surface, while a timing chain is a metal roller chain. Most cars we drive now have timing belts instead of timing chains and gears. Although different manufacturers have their recommended mileage, you need to have your car's timing belt checked regularly. To have it checked by experts, contact Giant Oak Automotive today.

Transmission Flush
Although most manufacturers recommend a transmission flush every 30,000 miles or every two years, some symptoms may indicate that you need a transmission flush sooner. Some of the symptoms that indicate that your car needs a transmission flush sooner are: transmission grinding or strange noises, problems shifting gears, slipping gears, surging of the car, and delay in vehicle movement. Flushing the used fluid from the transmission washes away tiny particles of dirt, clutch material, and metal shavings. For all your transmission flush needs, call 805-375-3117 or visit Giant Oak Automotive today - we are transmission experts.

Transmission Maintenance
Any car part manufacturer will tell you that preventive maintenance is critical to the part's lifespan. Like other auto parts, car transmissions aren't built to last forever. However, you can increase the transmission's lifespan by performing regular preventive maintenance. The easiest way to maintain peak performance and fuel economy is to provide regular transmission maintenance for your vehicle. To have your transmission maintained by experts, visit Giant Oak Automotive.

Transmission Repair
Our services include transmission repair on both manual and automatic transmissions. The first step in getting you back on the road is assessing your transmission to accurately determine the source of the problem. In some cases, we are able to repair your transmission simply with adjustments, replacing external seals, or replacing accessible parts. To have this done by specialists, call 805-375-3117 to talk to the mechanics of Giant Oak Automotive today.

Transmission Repair and Rebuild
When it comes to automatic transmission repair, there are several options: buying a new one, buying a remanufactured one or having yours rebuilt. Each of the above options has its own share of advantages and disadvantages. Of the three options, rebuilt transmissions are the most economical. A rebuilt transmission involves removing the transmission from the car, disassembling it, replacing worn out parts, reassembling it, and then reinstalling it. To have this done by specialists, call 805-375-3117 to talk to the mechanics of Giant Oak Automotive today.

Transmission Replacement
In motor vehicles, the transmission usually refers to the gear box, which uses gears and gear trains to transmit speed and torque from a rotating power source to another device. You can have your car's transmission replaced with a new, rebuilt, remanufactured, repaired or used transmission. For more information contact Giant Oak Automotive in Newbury Park, CA. Our experienced service technicians can help you make the best decision for your vehicle and your wallet.


What Our Customers Are Saying

I cracked a cylinder head in my engine in my beloved 4Runner after initially thinking it was just a clamp accidentally left on my fuel line after a smog check elsewhere. Mike is so honest and his prices are so fair and reasonable and he even gave me a ride home and dropped me off. He also straightened out my license plate for free. What a guy!!!


-Heidi T.

This is the best place to take your vehicle for repairs. Mike is a straight shooter and made the process of dealing with my warranty company very simple and stress free. He was very responsive and kept me well informed throughout the process. I strongly recommend this place for any auto repairs you need!


-John L.

My wife and I have been taking our vehicles to Mike at Giant Oak Automotive for over 20 years. During that time Mike and his crew have consistently provided excellent service at very fair prices. He is honest, hard-working, knowledgeable, and will go the extra mile to get the job done, often without charging extra. I would recommend his shop without hesitation for anyone needing a reliable mechanic.


-Bill S.

Excellent service and the person that helped me was so helpful and honest. I will be going back to this mechanic from now on. Thank you for your help and for easing my mind by taking good care of me and my car.


-Olson R.

I did my homework...received quotes from two other local shops. I ended up here and what a great decision that was. Mike is such a great guy! His prices are more than fair and work and work ethics A+. Come to find out, my two brothers and nephew already use Giant Oak as their go to mechanic. You know the feeling when you really know you have found an honest mechanic...This is the place and Mike is the man!


-Rick S.

Best place in the world. Mike is a gem, honest, knowledgeable and a hellava,nice guy. This is the place for your car, they will not sell or fix anything that doesn't need fixing. Just like the old days, good price, great work.


-Lee J.

This is definitely an overdue review. A few months ago, my car battery was on the fritz. Giant Oak Automotive accommodated by schedule for same-day service, diagnosed the problem, and sold me a high-quality battery. Since that time, I have gone back to Giant Oak Automotive for preventative maintenance (e.g. oil changes), and have been very happy with the company's professionalism and customer service.


-Rachel A.

Mike is a great guy, does great work, and is very conservative with his treatment of your car. He doesn't take chances, and always looks out for your best interest. I trust him completely, and have been taking my cars to him for at least 15 years.


-Rob L.

Mike at Giant Oak Automotive was a huge help. We had a client in his area with a noisy belt and he was able to take care of it quickly.


-Nick M.

Love the owner, him and his team do great work.


-Tarrant R.

Very knowledgeable and reasonable. Love the way they take care of our cars.


-Nicole I.

I definitely trust these guys which has been hard for me to find in a mechanic shop. Highly recommend this place!


-Kevin T.

Guy is very helpful there. He helped me with my speedometer issues that kia would not help with!


-Kellen W.
  • ASE (Automotive Service Excellence)
  • AutoWares - Auto Value - CSC
  • BBB (Better Business Bureau)
  • BG Products
  • Enterprise
  • Gates
  • Call Us For Service: 805-375-3117