Parsippany, NJ • Morris County's #1 Transmission Shop

Drivetrain Specialists You Can Trust

Certified transmission rebuilds, repairs, and full automotive services. Locally owned & operated - serving all of New Jersey since 2010.

Official TCT shop truck in front of Parsippany shop
Classic car transmission restoration in progress
Vehicle completed after transmission rebuild
Side view of customer vehicle at TCT shop
Customer vehicle in front of Tri-County Transmissions shop
Custom purple vehicle serviced at TCT

Expert Automotive Services

From complete transmission rebuilds to full drivetrain diagnostics - we have the expertise to fix it right the first time.

Technician rebuilding a transmission at Tri-County Transmissions

Transmission Rebuild

Complete disassembly, cleaning, inspection, and reassembly using premium parts. We restore your transmission to factory spec - or better.

Transmission Rebuild Details
Transmission repair being performed on a vehicle

Transmission Repair

Targeted repairs for slipping, hard shifts, leaks, solenoid failures, and more. We diagnose precisely so you only pay for what's needed.

Transmission Repair Details
Advanced automotive diagnostic scanner connected to a vehicle

Automotive Diagnostics

State-of-the-art scan tools and experienced eyes. We pinpoint problems fast and give you a clear, honest picture before any work begins.

Automotive Diagnostics Details
Brake rotor and caliper inspection at Tri-County Automotive

Brake Services

Pads, rotors, calipers, and brake fluid services. We keep your stopping power reliable and safe for every mile ahead.

Brake Services Details
Suspension component inspection on a lifted vehicle

Suspension Services

Shocks, struts, control arms, tie rods, and alignment. Restore the ride quality and handling your vehicle was engineered for.

Suspension Services Details
Drivetrain and driveshaft service at Tri-County Transmissions

Drivetrain Services

CV axles, driveshafts, differentials, and transfer cases. Our drivetrain expertise goes from front-wheel to 4WD and AWD.

Drivetrain Services Details
Side view of a transmission removed from a vehicle at TCT shop
Detailed close-up of transmission internals being inspected

15+

Years Experience

Why Choose TCT

What Sets Us Apart

We are not just another auto shop. We are your neighbors, your advocates, and your vehicle's most dedicated specialists.

Locally Owned & Operated

We are invested in this community. As your neighbors, we treat every vehicle like it belongs to family - because it does.

Certified Master Technician

Brad brings deep expertise, continuous training, and a genuine passion for all things automotive to every job he touches.

Advanced Diagnostic Technology

We use HP Tuners and professional-grade equipment to diagnose with precision - so you never pay for guesswork.

Customer Satisfaction Guaranteed

We stand behind every repair. If you are not completely satisfied, we make it right - that is our promise.

Proud Partner

Authorized HP Tuners
diagnostic & calibration partner

How It Works

Simple. Transparent. Reliable.

We make the repair process stress-free from your first call to your final pickup.

Schedule

Call, text, or book online. We will confirm your appointment and prepare for your vehicle's arrival.

Diagnose

We perform a thorough inspection and diagnostic. You receive a clear, written report with no hidden surprises.

Repair

With your approval, our certified technician performs the repair using quality parts and proven techniques.

Road Test

Every repaired vehicle is road-tested before pickup. We do not hand over keys until we are 100% satisfied.

Customer Reviews

What Our Clients Say

★★★★★

"Brad and his team rebuilt my truck's transmission and it shifts better than the day I bought it. Honest, fast, and incredibly knowledgeable. I won't take my vehicles anywhere else."

Morris County, NJ • Verified Google Review

★★★★★

"Came in with a major slipping issue. They diagnosed it same-day, gave me a fair price, and had my car back in 4 days. Exceptional service from start to finish - highly recommended."

Parsippany, NJ • Verified Google Review

★★★★★

"Drove from Bergen County specifically because of the reviews and wow, they delivered. Thorough diagnosis, no upselling, quality work. This is what a great local shop looks like."

Bergen County, NJ • Verified Google Review

Got Questions?

Frequently Asked Questions

Everything you need to know about our transmission and automotive services. Can't find your answer here? Reach out - we're happy to help.

If your vehicle slips between gears, hesitates when shifting, or shows signs of severe internal wear on inspection, a full rebuild is typically recommended. Minor leaks, solenoid failures, or sensor issues can often be repaired without a full rebuild. Our certified technician performs a complete diagnostic to recommend the most cost-effective solution for your situation.

A transmission rebuild typically takes 3–5 business days depending on parts availability and the complexity of your transmission. We will provide you with a detailed timeline and keep you updated throughout the entire process.

Yes. We service domestic and foreign vehicles including cars, trucks, SUVs, and performance vehicles. Our certified technician is experienced with automatic and manual transmissions across virtually all makes and models.

We are located in Parsippany, NJ and primarily serve Morris County, but we welcome customers from Essex, Passaic, Bergen, and Sussex counties - as well as out-of-state customers. Many clients drive from New York, Pennsylvania, and Connecticut for our specialized services.

Our diagnostic service uses advanced scan tools to read fault codes, live data, and system parameters across engine, transmission, ABS, and other modules. We provide a written report of all findings with our recommended course of action and transparent pricing before any work begins.

Yes. We stand behind our work with a warranty on parts and labor for our transmission rebuilds. Please contact us directly for full warranty details applicable to your specific vehicle and service.

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