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New ownership since 2016! 520-351-2061

Heavy Duty Services: Engine Overhaul & Replacement

For the big jobs, take your vehicle to Covenant Automotive Repair & Service! 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 Tucson, AZ 85712 area.

Our heavy duty services include:

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 Covenant Automotive Repair & Service.

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 Covenant Automotive Repair & Service. Visit us at 4950 E Speedway Blvd for quality engine replacement services.

Engine Repair
When your vehicle shows any sign of trouble, bring it to Covenant Automotive Repair & Service for full-service engine repair in Tucson, AZ. From diagnostic check engine light repair to precision engine part repair, our expert auto mechanics are ready to help you.

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 Covenant Automotive Repair & Service.

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, Covenant Automotive Repair & Service has experienced engine rebuilders ready to assist you.

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 Covenant Automotive Repair & Service in Tucson, AZ. Our experienced service technicians can help you make the best decision for your vehicle and your wallet.

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 520-351-2061 to talk to the mechanics of Covenant Automotive Repair & Service 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 520-351-2061 or visit Covenant Automotive Repair & Service today - we are transmission experts.

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 Covenant Automotive Repair & Service's cylinder head repair and reconditioning specialists today.

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 Covenant Automotive Repair & Service today.

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 Covenant Automotive Repair & Service can drop in a completely remanufactured JASPER gas or diesel engine, transmission or differential and get you back on the road again quickly! Call Covenant Automotive Repair & Service at 520-351-2061 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 520-351-2061 to talk to the mechanics of Covenant Automotive Repair & Service about your cylinder block problems.


Engine Mounts, Timing Belt, Valve Cover Gaskets

ASSOCIATIONS

  • ASE (Automotive Service Excellence)
  • Parts Plus
  • BBB Reviews
  • Car Care Aware

Testimonials

  • We found our former auto repair shop closed only to "randomly" pull into Mark Knaak's, Covenant Automotive, LLC today. While it makes sense to get an appointment, they performed mechanical service on two of our cars without hesitation. They were pleasant to work with, asked appropriate questions, provided information and excellent service second to none. Mark is a VERY experienced mechanic and able to work on almost ANY make or model. He specializes in "high end" luxury vehicles. Raise your prices, Mark! You deserve EVERY penny. THANK YOU. We'll be back!
    -Thomas & Gloria W.

  • Mark was honest, kind, worked very efficiently, and made my experience at Covenant Automotive not only enjoyable but heaven sent. I will certainly be taking my Nissan to him and his team as long as they are in business in Tucson. Thank you Mark for your kind heart and excellent service!
    -Hallah K.

  • Very impressed! I just dropped in before 3pm on 2/19/2018 with my 2001 F150 Lariat, thinking I might need a fuel filter replacement..."Service Engine Soon" light was lit. When they checked, it was determined the truck was misfiring on #8. I thought I'd have to arrange another day to bring it in for the estimated 3 hour job; Mark assured me that he could get two guys to work on it right away, and if they had to go a little past 5, they'd do whatever was needed to get me going. Well, a whole set of plugs and a new coil, and they finished at 4:50! Amazing work!
    -Pam D.

  • My stepdad brings in our cars to Mark and he does a fabulous job taking care of them! I took my Nissan Maxima in for an oil change and to get my splash guard nailed back into place. They took excellent care of my car and I am very impressed with them! Will be back with my husband's car for an oil change, and will keep coming back! The oil change is a great price for the service that you receive!
    -Renee F.

  • Very honest work done in timely manner prices very good
    -Sean H.

  • Mark has worked on my Mercedes E350...and now a doge journey (only an oil change and inspection before cross country trip.) The service and above all, honesty you'll get here is just the best. We're moving east and will miss them!
    -Phyllis G.

  • Very honest and fair! My stepdad has been bringing the cars here for years and they are very fast and effeciant. I will be coming back again in the future for any work that needs to be done to my car.
    -Renee

  • Covenant has repaired my BMW multiple times and are amazing to work with. I always get a fair price and they are extremely responsive. They will continue to get my families business.
    -Elise N.

  • My 2000 GMC 1500 SLT 2WD with 147K original miles had developed a popping sound in the frt left side while I was visiting in Tucson, and being a bit of a motorhead from years past, I had a good idea as to what it was. I took it into a well known national chain garage to do an inspection, not only did they charge me $20 to do the inspection, they quoted me well over $2300 to complete the work. Then I did a little web search and found Covenant Automotive which is backed by NAPA so I called made an appt. I took it in as scheduled and they got right on it, doing the inspection and working up a quote, that is when Mark told me that he would quote the job in the most economical manner, which meant replacing the entire upper arm rather than replacing the bushings and the ball joint separately on both sides, as well as the tie rods on both sides. He quoted me $1017 and change which also included an alignment. They took me back to the RV Park where I was staying and finish! ed the work as promised, on time and on budget! I have driven the truck now for a few weeks, took a 500 mile road trip and I am completely satisfied with the quality level of their work. Mark and his team are not just mechanics, they are motorheads themselves and it is in their blood, they will work on your car or truck as if it was their own and they take great pride in their commitment to their customers My thanks to the team at Covenant Automotive, and Happy New Year!
    -Marc G.

  • All I can say is I wish you were here in Amarillo where I just moved. I've never had such good service from anyone, and I am a real skeptic when it comes to mechanics. You and your crew are the best. Thank you!
    -Bonnie Lundy