Jasper Engines and Transmissions Reviews

So I purchased the 68rfe with a triple disc torque converter, yesterday my vehicle had a problem and wouldn’t shift….. They offered me nothing basically, told to go pound sand. Go buy a fire punk 68rfe before you waste your money on their transmission assembly. I also pulled my transmission apart today and found the valve body was loose and not torqued properly. I found all bolts installed finger “snug”.

If I could leave a 0 star review, I would. I purchased a 6.4 hemi Jasper motor (June of '23) after the stock motor dropped a cylinder at 160k miles. The first motor made it less than 2k miles before it started burning 1 quart of oil every 500-700 miles. That motor was replaced under warranty, although it took almost a year of oil consumption documentation before Jasper agreed to replace it. The 2nd motor lasted less than 5000 miles before it started knocking in cylinder #8.

Had a Jasper transmission installed in my 18 Sierra. The first transmission went 30 miles, had my vehicle towed back to the repair shop. The second transmission was installed and in less than 500 miles it started to heat, shift at high RPM's and would not shift into 6th gear. Rebuilding with cheap Chinese parts?

Very Poor Quality Engines and Warranty. Just had a Customer whom I recommended Jasper for their Quality. Also Customer Paid for Additional Warranty Coverage. New Engine was NO Good, Rattling on Start-Up. Got Jasper to send another engine and it had the exact same problem. Tried to get Problem Solved with Jasper, Only Now they say Customer drove first Engine in to water Ruining it. Which was a lie, Engine was never in water and Ran normally after the start-up rattle went away. Again, 2nd Engine does the EXCACT Same thing, from 1st start. Jasper Refuses to take care of customer or the shop they under paid. Stay Away from Jasper Engines and Transmissions.

Jasper engine for my 1990 Toyota 4- runner. Had for 4 months and head gasket leaked. They fixed it right away. Now 7,000 miles later 3 valves on the left all failed, and Jasper has not honored their 3 year/100,000 mile warranty. I keep my car meticulous and have every record since the day I bought the car. This is my third rebuild engine (576,000 miles) so not a newbie to the rebuilt engine idea. My last two engines lasted much longer than 3 years and 100,00. If Jasper does not honor the warranty - it has been 1 month, I will take legal action against them and file a formal complaint with the state.

Jasper used to be good. Not anymore. Their quality of products and customer service has dropped to a new low. We put in two Jasper motors this past summer 2024 and both are leaking all over. We reached out to the warranty department and told them that there was a leak between timing cover and block. He didn't believe us and told us that it was probably coming from not properly installed valve covers, which he said was a known problem area that needed to be redone before they would pay for any repairs because he said it was our fault. So we redid that repair knowing that that was not the problem to appease Jasper. What do you know, but it was still leaking in the same spot.

I don't usually write reviews but I really feel that future consumers should beware of this company. In November of 2023 we had the original transmission replaced with a Jasper transmission. That transmission failed after only 3 1/2 months. Jasper replaced that transmission but we were out of the labor cost, replacement of the cost of the other engine parts that were damaged because of the failure and missed work. Only to have that transmission fail in August.

Worst garbage engine I have ever bought. Jasper worst customer service. They do not give a rat's butt about you or the quality of their rebuilds. First time and last time I will ever use Jasper. 100 miles clicking, ticking upper end piston rod bearing making noise. Try to get Jasper to help. Ha ha ha. Good luck.

I overpaid to get a Jasper transmission for the warranty to find out they only pay so much. I put 200mi on when I started having issues. It's been in the shop 5 times for the same problem. I went to the shop they sent me to and ended up paying 500 out of pocket because they only pay so much labor. Then why send me there if they knew it wasn't going to be covered

I bought a Jasper Motor and it imploded, after an expensive tow job and an expensive diagnosis and paying $100 a day rental about $3,000 they sent a new motor. Then 3 months it fails. After an expensive tow and diagnostic tests and $100 a day rental they sent another motor. After 6 months the motor failed. After an expensive tow, and expensive diagnostic a new motor was sent. Keep in mind Jasper doesn't cover towing, it doesn't cover the mechanic checking multiple parts, it requires many new parts for the warranty to be covered. It doesn't cover rental. If I had advanced knowledge I would have bought a $30,000 truck rather than suffer their crap. And Jasper used to be a credible company.