● Oakland Park, FL
Open Mon–Sat — (954) 535-9393
Call the shop
(954) 535-9393
Certified & Trusted Licensed & Insured Family-Owned Since 1983 ★★★★★ 4.6★ on Google · 229 ReviewsTrusted across South Florida
Oakland Park, FL · Since 1983

Custom Transmission
Rebuilds.

When a repair won’t cut it, a full rebuild will. Torn down to the case, inspected, and rebuilt with new parts — then backed by a 1-year / 12,000-mile warranty.

What is custom transmission rebuilds at Number One Transmissions?

Number One Transmissions builds custom transmission rebuilds for cars, trucks, and fleets from our Oakland Park shop, serving South Florida since 1983. Every unit is completely disassembled, cleaned, inspected, and rebuilt with all-new clutches, seals, gaskets and hard parts — then bench-tested and backed by a 1-year / 12,000-mile warranty. Free estimates. Call (954) 535-9393.

CK
Chris Koulouvaris — Owner Three generations of transmission specialists, hands-on since 1983. Reviewed & updated
ASE CertifiedA+ BBB Accredited40+ YearsLicensed & Insured

Expert custom transmission rebuilds in South Florida

A rebuild is the right call when the internal wear is done — not just one part. If there’s metal in the fluid, multiple gears are failing, the clutches are burnt, or the transmission simply has the miles, patching one piece is throwing money at a problem that’s bigger inside. A proper rebuild resets the whole unit.

At Number One Transmissions, a rebuild is all done in-house: full teardown, cleaning, and inspection down to the bare case, then reassembly with an all-new master overhaul kit — clutches, steels, seals, gaskets, Teflon rings, filter — plus upgraded hard parts at the known failure points. It leaves shifting like new. Want more than stock? See our 500-1000+ HP performance builds.

Signs your transmission needs a rebuild, not just a repair

If your vehicle is showing any of these, bring it in for a free diagnosis before a small problem becomes a big one:

Metal in the Fluid

Shiny flakes or a milkshake-colored fluid mean internal parts are grinding themselves apart.

Multiple Gears Failing

Slipping or no engagement across several gears points to worn clutches, not one part.

Burnt Fluid Smell

A hot, burnt smell means the clutches have overheated and the fluid has broken down.

High Mileage & Wear

A high-mile transmission that’s slipping is usually cheaper to rebuild once than to repair repeatedly.

No Drive at All

When nothing engages, the internal failure is major — a rebuild restores it properly.

Repeated Repairs

If it keeps coming back for the “next” problem, a rebuild ends the cycle for good.

Process

How we handle your custom transmission rebuilds

The same honest, four-step process on every job — a solution, not a guess:

Full Teardown

The transmission is completely disassembled, cleaned, and inspected down to the bare case.

All-New Wear Parts

New clutches, steels, seals, gaskets, Teflon rings and filter — a complete master overhaul kit.

Factory Fixes

The known failure points for your transmission family are upgraded, not just replaced.

Test & Warranty

Bench-tested and shift-verified, then backed by a 1-year / 12,000-mile warranty.

Why South Florida trusts Number One Transmissions

A transmission is not a job for a general shop. Here’s what you get with a dedicated, family-owned specialist:

  • 40+ years, three generations — a true transmission shop, not a franchise.
  • ASE-certified, licensed & insured, A+ BBB accredited.
  • Free diagnostics & honest estimates — the price we quote is the price you pay.
  • 1-year / 12,000-mile warranty on every repair and rebuild.
  • 4.6★ across 229 Google reviews — nearly every one names owner Chris.
  • Veteran & first-responder discount.
Reviews
4.6★ Google · 229 Reviews

Trusted by South Florida drivers.

★★★★★

“You did a great job, Chris, of rebuilding my transmission. My 1999 Dodge Ram has 391,000 miles and going. Shifting firm and precise.”

Kyriakos Moforis · Google
★★★★★

“Great price and great service. The owner Chris built a great transmission and shipped it all the way to Northern California for my LS3 build.”

Thaddeus Wiltz · Google
★★★★★

“Chris is the real deal — he knows his stuff and gave me a very fair price. Honest and trustworthy.”

Brandon Michaels · Google
★★★★★

“Chris was amazing, very knowledgeable. Got me back on the road as promised with zero issues. A1 customer service.”

Michael Barnes · Google
★★★★★

“My transmission was a mess and they not only did a perfect job but they fixed it fast. Chris takes pride in his work.”

Juli Nickell · Google
Answers
Custom Transmission Rebuilds FAQ

Questions, answered.

How much does a transmission rebuild cost?
It depends on your vehicle and what the teardown finds. We give a free estimate before any work begins and never start without your approval. Call (954) 535-9393.
Is it better to rebuild or replace my transmission?
A quality rebuild restores your original unit with new wear parts and is usually the best value. A remanufactured or used replacement can make sense in some cases — we’ll give you the honest trade-offs for your vehicle. We also sell rebuilt units.
How long does a rebuild take?
A typical rebuild takes a few business days. We’ll give you a realistic timeline with your estimate and keep you posted.
What’s included in your rebuild?
A full teardown and inspection, an all-new master overhaul kit (clutches, steels, seals, gaskets, rings, filter), upgraded hard parts at the weak points, and bench testing — all backed by a 1-year / 12,000-mile warranty.
Do you rebuild performance transmissions?
Yes — from stock rebuilds up to 500-1000+ HP performance builds. We build and ship nationwide.
Free Quote

Tell us what it’s doing.

Free diagnosis, honest estimate, and a straight answer — from South Florida’s transmission specialists since 1983.