Jasper Engines and Transmissions

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.