Jasper Engines and Transmissions Reviews

Purchased a Jasper Transmission. After about 4 weeks of use I totally lost reverse. I purchased a 3 year/100,000 miles warranty. (Parts and Labor). I was told that Jasper only covers up to 90 dollars a hour on labor and doesn’t cover fluids. So now after purchasing a s 6500 transmission and paying to have it installed. I will now have to pay an additional 45.00 dollars a hour per hour of repair and an additional 190.00 worth of fluids. At my own expense because if the transmission failure that is a 100 percent defect from Jasper.. Buyer Beware…. I’d give zero stars if possible.

Got a transmission from Jasper with a 3 year warranty. Paid 7,500 for this transmission and labor. After 3 weeks of driving my truck the transmission went out again. Jasper had to replace the transmission again and said they will pay for the 1,800 labor on the vehicle but I had to pay upfront and they would reimburse me after getting the other transmission back from the mechanic which takes about 3-5 weeks. Well it’s going on 12 weeks now and still no reimbursement. When I call they make excuses like the check got lost in the mail and there was an error on the check and had to be reissued and blah, blah, blah! Still no check and I would NEVER recommend this company!

A few years ago we had a Jasper transmission installed in our 1998 Expedition. It's an extra emergency vehicle so it wasn't used right away. In fact, it was not used until 2/3 the way through the warranty. Then, with less than 10,000 miles on the transmission, IT BROKE. Out of the blue-completely quit. We went back to the shop who installed it and neither they nor Jasper will absorb any of the cost of fixing it because we had passed the 3 year warranty mark. The fact that there is less than 10,000 miles on the transmission didn't even make them blush. An internal snap ring had broken, clearly indicating a manufacture problem, yet it became our problem because of the time frame. We will NEVER install another product from Jasper after this experience.

I was faced with a very difficult decision. I am in process of opening up an HVAC company and since money was tight, thought I could save a bundle by buying a used Cargo Van. Eventually, I chose a 2004 Ford E250 cargo van. Having only 150k and after doing an inspection and doing carfax report found this would be worth the risk. For the first Week the van ran like a champ. Started right up. Ran smooth, sounded smooth. Absolutely no warning signs to what was come.

I purchased a Jasper transmission for my “custom” jeep (as they put it) in I believe August 2019. It last less than 2000 miles. I took the vehicle back to the “authorized dealer” and it was replaced. I was told a gear burned up. That should have been my first clue The second transmission was out in and at the time I asked the shop manager if a trans cooker should be installed and he told me no. Second mistake. That transmission did not last very long either. That was replaced with Jasper transmission #3 in July of 2021 with a trans cooler. It lasted until last month and gave out. I contact the shop that installed the transmission and the same shop manager said he would contact the Jasper sales rep and see what could be done. I will add that I took my jeep to the shop that I had been doing business with for several years.

I purchased an engine block for a 7.4 liter engine in my boat. I paid top dollar for this engine. My boat was now running for about 6 miles out in to Lake Erie. That was when my Jasper engine blew. That was on May 10th. I finally got my warranty engine on July 28th. They lied about not being contacted until July 3rd. This was peculiar because they sent a person in late May to do a check to see if I got the engine hot, so they could void my warranty I'm sure. I warn anyone not to buy anything from this company. Pitiful service to say the least.

My original Chevy Silverado transmission was replaced 3 times in under $100,000 miles total, with a Jasper Transmission and should've been replaced again. The 1st replacement lasted approx. 36,000 miles. The 2nd replacement had a fluid leak and was replaced without question. The 3rd replacement had approximately 40,000 miles on it and had a bad throw out clutch to the torque converter and was replaced...again. The 4th and latest Jasper Transmission developed a whine, hence a bad torque converter, with only 9,000 miles on it. Jasper refused to replace this one, because it went above and beyond the warranty. I make sure I tell all my customers and mechanic friends to NEVER get a Jasper Transmission!! I'm not a mechanical expert, but I own a business and know cheap parts when used. I would've selected 0 stars given the opportunity.

Hotshot hauling (based in Baltimore Md) with 2010 Dodge Ram 3500 Dually pulling no more than 10k at any time. My OEM transmission failed at just under 186k miles. 1/7/2021 I replaced it with the 1st Jasper transmission and it lasted about 3 months failure to a broken input shaft and left me on the side of the road in VA. It Stayed in the shop approximately one month. Second transmission failed about 5-month failure value body left on side of the highway in NC. Stayed in the shop for a little over a month. 3rd transmission broken at about 6 months failure to fifth gear, left me on the side of the highway in North Carolina, again Truck stayed in the shop for about 1 month. 4th transmission failure at about 6 months left me on the side of the road iN SC. Failure to the overdrive. Stayed in the shop almost 3 months.

We put in a Jasper transmission in our Suburban. Within 5000 miles the torque convertor went bad and they replaced it with another transmission under the warranty. That torque convertor went bad within 3000 miles and they replaced it again. We just recently got the Suburban back from the 3rd transmission being replaced and it has been less than 1000 miles and 3 weeks and the torque convertor is bad again. We will be putting in a fourth transmission within a year. It is ridiculous and we are going to be discussing other options at this point. I would never recommend Jasper to anyone. This is the worst experience we have ever had with any automotive parts.

Had a brand new rebuilt transmission from Jasper installed on a 2006 Ram 2500. The transmission only lasted 3000 miles. They do replace the transmission but they do not cover any parts and they say how long it will take to take out and put in in the end after spending $7,000 on a new one. It end up costing me another $2,000 to replace one with 3,000 miles on it. The manufacturer themselves could not care less that is their warranty. You end up getting screwed in the end stay away from their transmissions and their company. I am in line with all the other terrible reviews about this company.

Stay away from Jasper. Especially the transmissions. I guess they can't find good help or have any quality control. I bought a rebuilt E40D for my F350 and the torque converter failed after 5000 miles. They did replace it and the second one has almost 20,000 but I'm having trouble with it now and it's out of warranty. You're basically screwed if you spend your hard earned money on any of their products.

Paid some good $$$ for Jasper to build me a lightly modified old school 350 to go in my 75 Camaro. Engine was rated at 350hp and lasted under 1200 miles before a flat spot formed on cam. They only gave me a 12 month warranty, and of course this happened at 14 months. I called them and they refused to stand behind the engine. Never again Jasper. Find someone else to buy from if you want an engine... Jasper is sub-par at best.

Had a Jasper replacement engine in a 2012 Chevrolet Suburban and it failed just outside of the warranty time frame, but not even close to the mileage limit. Jasper did not warranty, but instead offered a discounted replacement engine at a reduced price, but with no warranty. The 2nd Jasper engine failed in under $15k miles. They refused to help on the replacement or with any parts. Terrible product. I highly recommend that you find another solution. We purchased through them because of their reputation, but as I've dug deeper I've found that their product and customer service have taken a sharp nose dive. DO NOT BUY A JASPER ENGINE.

This company sucks. First they tell you a story that they have your parts in stock until they charge you and then they call you to let you know that your parts are not available and that your parts are going to be deliver in weeks while you sold the job and gave the customer a timeframe... Very embarrassing for shops due to negligence of Jasper. The worst part is you have to wait 3-7 business days to get your money back. Very bad business.

Crap product. To spend over 5 k on a diesel motor and have all the oil changes, regular service and get 30k miles off the motor before it blows up is embarrassing. This company is an embarrassment. I will never go to any shop that Carries their sub par product.

Got a Rear Differential for a 2002 Explorer installed. After 5 months the differential started making noise while driving. Called Jasper and Tom recommended to do a Drain and Fill of the differential and add friction modifier and drive for week to see if noise goes away. The noise did not, and Jasper agreed to warranty out the differential and sent a new one. They declined labor warranty according to Tom stating they boil tested the fluid and it had water in it??? After asking how they thought water got in it, Tom stated it could have been through a breather tube? If that was the case, then it's their design issue and this differential is a carrier style with no breathers? After another phone call back, they still denied labor coverage stating water in the brand-new fluid!!!

We are a small shop that has purchased a motor from Jasper Engines and it was junk and had used oil in it. Then to top it off, the salesman in the area started saying negative things about our shop that were absolutely not true. Jasper Engines sell complete junk and their salesmen are terrible to slander another business. Would never recommend them and only to stay away from a company like this.

Jasper does not honor their warranty. I had to have my turbocharger replaced on my diesel truck about a year ago. My regular mechanic was doing a routine check and found the turbine blades were breaking apart. The mechanic is someone that I have trusted for 10 years so called Jasper concerning the warranty. Basically, without even requesting for the turbocharger to be sent to them for future investigation, is blaming the damage on everything except the turbo. According to my mechanic there is no other reason for the turbo charger damage is that Jasper did a very poor rebuild and sold a faulty part. I don't drive this vehicle much so there is maybe 600 miles on this "new" faulty turbocharger.

Replaced the engine the engine in January 2017. December 2020 and a cylinder blew. I'm retired and no longer drive that much. The new engine had less than 12 thousand miles on it. I realize that, technically, the warranty, 100,000 miles or 36 months, had expired, but come on. The oil was changed every 1000 miles. If Jasper engines are so wonderful, why did this happen? I am not impressed. I will not recommend Jasper Engines in future.

I had the engine replaced on my 2010 Ford Ranger with a Jasper Engine - before warranty ran out the engine failed by having poor parts built in the engine. In March 2020 a replacement engine was put in - I had to pay all the labor to get the old engine out and a new engine put in. The truck was not driven due to the Covid Pandemic and I didn't leave the house. Since then I have put on just over 4,000 miles and the engine died 4 days ago and I was stranded. I had the car towed to Hals Auto Repair where the engine was put in.

In 6/6/2019, I bought a remanufactured motor from Jasper Engines and Transmission to replace the one that had failed. I got the extra insurance on rental car and mechanic labor cost. First motor ran a bit rough and within 20,000 miles was using almost 2 quarts per 5000 mile oil change. Upon testing, I had multiple cylinders that failed cylinder pressure test. Jasper agreed to replace motor. I got a new motor and check engine light started coming on. I assumed it was due to all oil that got into the catalyst since it was a Catalyst error.

The transmission in my 2002 Toyota Tundra was replaced by my mechanic in California with a Jasper transmission. It started to leak fluid after only 750 miles when I drove to Utah. I contacted Tom at Jasper who recommend a “Preferred Installer” in Bountiful, Utah. After the transmission was replaced with a new transmission from Jasper I was charged an additional $200. The difference between what the installers charge and what Jasper will pay. When I contacted Tom about how I how to get reimbursed he informed me that that’s all the warranty covers. So to be clear, I paid Jasper $1,600 for a new transmission that failed in less than 1,000 miles and I’m on the hook for getting it replaced!

My car was stolen and the engine was blown. I had a new Jasper Engine put in NOV 22nd 2019(2012 Cadillac CTS coupe). I have barley driven this car due to the fact that I take a shuttle to work and have been quarantined for 3 months now. I've put 2000 miles on it since I got it back, and as I was leaving a funeral I started having bad car troubles. I made it down the street to my local Firestone who just informed me that another new engine will need to be put in (5/26- broke down 5/23). It took a month to have the new engine delivered and put in the first time, and I cannot keep going through this hardship without a reliable vehicle. Especially when I paid 11k to have the new engine put in it once already!!! I dont trust that the second engine will last either and even though I love this car I feel I will have to sell it as I cannot trust this company at all!

No company resolution as it was not needed, original install shop uncovered a very coincidental problem in close proximity to the engine that simply mimicked engine failure noise, but wasn't.

Attempted to buy a truck engine and they would not accept a credit card for payment. They wanted a wire transfer from my bank or cash approx three thousand! Or they want you to go thru one of their installers. They lost this sale and from what I have found out they are problematic about their warranties.

In May of 2019, I had a Jasper engine replaced in my 2011 Jeep Wrangler -Stock #248010 Production #485629 @ mileage of 140630, which was installed by a Jasper Distributor in Wichita, KS. That replacement motor lasted approximately 10000 miles and 6 months when it failed. After having it towed over 200 miles (no reimbursement under the warranty) and three weeks for Jasper and the Wichita distributor to decide to replace the motor. The second replacement motor has now failed!! Which lasted 12 days and less than 1000 miles. Ticket #**.

I seriously never complain or do negative reviews but this needs to be known. We put a new Jasper engine in our truck in Feb of 2016. It is now Nov of 2019. The engine has 80,000 miles on it. We learned something was wrong with the engine. We took the truck in for some routine maintenance and to have a couple of things fixed. We really trust the place we take our trucks to be worked on. They found about $2,600.00 worth of repairs needed because of the engine alone. We didn't know at the time, but the owner of the repair shop called Jasper to let them know about this faulty engine. Jasper would not budge and stood by their warranty, which was expired in Feb 2019, even though these engines are supposed to go 300,000 miles and this engine only went 80,000.

This 1990 Ford Bronco two had a Jasper Reman engine installed on 8/2016. This engine never ran correctly. It must have been running poorly when Jasper ran tested it too. I removed the cylinder heads and found the valve seats on two cylinders were missing so I guess they do not check installed valve height because those valves were 3/8 of an inch higher than the other valves. I contacted Jasper and they said, "Sorry it's out of warranty." I sent them pictures to prove that the parts were never installed and they won't budge on the warranty because it would set a precedent. I told them THE precedent you should set is taking care of your customers. Needless to say this shop will never install another Jasper product. Previously we installed 2 Jasper transmissions and both were fixed or replaced under warranty. 3 strikes and you're out.

Transmission put in July, 2019 and within a month, the transmission was leaking. Fixed transmission supposedly and leaking again in Oct. Had to stop and get someone to look at and they found multiple leaks and put fluid in so I could get it to shop. Jasper will not pay for that stop because no one called. Really???? The transmission hasn't been in the car 3 months. Bad customer service and evidently their product is terrible and I would never suggest this company for anything to anyone.

Recently we purchased a marine engine from jasper. After the engine was completely installed in the boat we attempted to start the engine before launching the boat to make sure all was good. This is on a 30+ foot boat so it needs to be launched by a Travel lift. At the test start the starter would not engage. After a few hours of troubleshooting it was determined one of the holes to mount the starter had been repaired and the starter would not align properly to the flywheel. We had to remove the engine and start over. The engine swap on this boat is a 40 plus hour install. Jasper would only offer 20 hours reimbursement at a reduced rate. Their rep said we should have purchased the additional warranty.