Mark's Transmissions and Performance

01/20/2026

⚠️ Weather Closure Notice ⚠️

Due to the winter weather expected in the Fort Worth, TX area, Mark’s Transmission will be closed Friday, to ensure the safety of our customers and our team.

We will resume normal business hours once conditions improve. Thank you for your understanding—please stay safe and warm!

— Mark’s Transmission Team

11/23/2025

Hauling heavy loads puts extra strain on your truck’s transmission. Did you know that nearly 90% of transmission failures are caused by overheating, poor maintenance, or not changing the fluid regularly? Watch for these five signs your truck may need transmission repair: Difficulty shifting gears, burning smells from the engine, slipping gears with sudden power loss, leaking fluid under your truck, or shaking and grinding noises while driving. Each of these symptoms can mean your transmission is wearing out and needs attention to avoid more costly repairs. Don’t wait until a small issue becomes a big problem, take care of your truck and stay safe on the road. For more tips or to schedule service, visit our website today.

https://www.markstransmissionsandperformance.com

09/03/2025

This September, we're offering our reliable and tested 6L80E transmission package. It includes everything needed to resolve common 6L80E issues. The package features a new billet torque converter, high-energy clutches, new steels, bushings, seals, gaskets, molded pistons, Transgo SK kit, Transgo TCC kit, Transgo OS, P.R. Valve, a new OEM filter, and synthetic transmission fluid. We'll also provide transmission tuning for 6-speed transmissions from 2007-2018.

08/28/2025

08/04/2025

07/25/2025

Got a Ford with the infamous 10R80? Don't let it worry you, we've got you covered. Call us today to schedule your appointment..

Mark's Transmissions is a family owned and operated transmission repair shop in Ft. Worth Tx.

07/10/2025

Don't forget, we have our 10R80 Ford F150 special going on until the end of July. Give us a call or stop by for more information.

02/27/2025

The customer noticed that the converter was shuddering, so we looked at it more closely. The problem turned out to be a worn-out pressure regulator valve in the 6L80E. These 6L80E and 6L90E transmissions never make for a quick and easy repair.

02/06/2025

We often receive inquiries about why our transmission rebuilds take longer than expected. The reason is that we meticulously inspect all transmission components. Sometimes, components may appear to be in good condition, but upon closer examination, we find they are actually worn out. Our goal is to ensure quality and perfection in our work, and we appreciate your patience as we strive to deliver the best results.

01/23/2025

We have a fresh stock of 4L60E transmissions with torque converters, ready to go. $1100 or $1650 installed. One-year, unlimited-mile warranty. Call us at 682-708-3027.