7632 Highway 66, Timbo, AR 72680
Mon–Fri 8am–5pm
Services All Platforms Pricing Reviews Warranty Builds Blog FAQ Get a Quote
Transmission Specialists · Diesel · Gas · Performance · Timbo, AR

Transmission Specialists. Done Right.

We do one thing — transmissions. Diesel, gas, manual, performance. Every rebuild leaves our Timbo, AR shop warranty-backed and built to exceed factory specs. No general repair shop can match the depth we bring to every job.

100%
Transmission
Only Shop
2yr
Diesel Rebuild
Warranty
5★
Google
Reviews
1yr
Gas & Auto
Warranty
01 — GAS AUTO

Gas Automatic Rebuild

6L80, 10L80, 4L60E, 10R80 and all major platforms. Complete rebuild with new clutch packs, valve body, seals — 1-year unlimited mile warranty.

02 — DIESEL

HD Diesel Rebuild

Allison, 68RFE, 5R110, 6R140 and more. Billet upgrades, custom TCM tuning, premium frictions — 2-year unlimited mile warranty.

03 — MANUAL

Manual Gearbox Specialist

NV5600, G56, NV4500, ZF S6-650. Carbon fiber synchronizers, steel shift forks, shimmed to blueprint tolerances.

04 — PERFORMANCE

Performance & Stage Builds

Triple-disc billet converters, billet shafts, custom TCM calibration for trucks that tow hard, pull hard, or race.

7632 Highway 66, Timbo, AR 72680
(870) 499-2082
Diesel · Gas · Manual · Performance · Serving All of North-Central AR
What We Do

All Transmissions. One Shop.

Gas, diesel, manual, or performance — transmissions are all we do. That means deeper expertise, better results, and stronger warranties than any general repair shop.

01

Gas Automatic Rebuild

Complete rebuilds for all major gas automatic platforms — 6L80, 10L80, 4L60E, 10R80, 6R80, and more. Every unit disassembled, cleaned, and rebuilt with new clutch packs, seals, and valve body work. Backed by our 1-year unlimited mile warranty.

All Gas Automatics
02

HD Diesel Rebuild

Our specialty. Allison 1000/2000, 68RFE, 5R110, 6R140, and all major diesel platforms rebuilt with premium high-energy frictions, upgraded internals, and custom TCM calibration. 2-year unlimited mile warranty — because we build them right.

Diesel Specialist
03

Gas Performance Build

Stage builds for gas trucks and performance vehicles. Billet-faced converters, upgraded clutch packs, valve body enhancements, and custom TCM tuning. Whether you're towing heavy or chasing performance, we build it to take the abuse.

Gas Performance
04

Manual Gearbox Specialist

NV5600, G56, NV4500, ZF S6-650 and all manual platforms. Carbon fiber synchronizers, steel shift fork upgrades, bearing replacement, and shimming to blueprint tolerances for crisp, precise driver feedback.

Manual / Standard
05

HD Performance Build

Triple-disc billet torque converters, billet shafts, enhanced lubrication flow, and full custom TCM calibration. Built for trucks that tow, haul, or compete at the highest level. Diesel or gas — we build transmissions that other shops won't touch.

Billet · Stage · Tow
06

Diagnostics & Preventative Care

Computer diagnostics, road testing, and full fluid service. We catch problems before they become expensive. Serving Mountain View, Mountain Home, Batesville, Clinton, Heber Springs and all of north-central Arkansas.

All Makes · All Models
Why a Transmission-Only Shop Makes All the Difference

General repair shops handle brakes, tires, oil changes, engines, and transmissions — transmissions might be 10% of what they do. At Ozark Transmissions, transmissions are all we do — gas, diesel, manual, and performance. That focus means we know every failure mode, every correct part, every clutch friction spec, and every calibration detail for every platform we touch. That's why our rebuilds hold up when dealer work and general shop work doesn't.

Call (870) 499-2082
Our Work

Featured Builds & Rebuilds

Every unit that leaves our Timbo, AR shop is rebuilt to exceed factory specs. Here's a look at our recent work.

HD Allison diesel transmission rebuild with Goerend performance upgrades - Ozark Transmissions Timbo AR
HD Diesel Build
Allison 1000 · Goerend Stage Build
Premium performance clutch frictions & billet upgrades for Duramax diesel
6L80 gas engine automatic transmission rebuild - Ozark Transmissions Timbo AR
HD Gas Build
GM 6L80 · Complete Rebuild
High-energy frictions, pump assembly, valve body — rebuilt to exceed OEM specs
NV5600 manual transmission rebuild for 5.9 Cummins diesel - Ozark Transmissions Timbo AR
Manual Rebuild
NV5600 · 5.9 Cummins Mated
Carbon fiber synchronizers, shimmed to blueprint tolerances for ultimate driver feel
Ozark Transmissions build room and shop facility in Timbo Arkansas
Our Facility
Dedicated Build Room · Timbo, AR
Purpose-built transmission shop — clean, organized, equipped for precision work
ZF automatic transmission rebuild specialist - Ozark Transmissions serves Mountain View Mountain Home Batesville AR
European Precision
ZF Automatic · Complete Overhaul
Solenoid matching, mechatronic board diagnostics, OE-level recalibration
Fresh Out of the Shop

Recent Builds

A rolling gallery of our latest work — updated regularly. Every build is different. Every one is built to last.

New build photos coming soon. Check back regularly!
Why Mountain View Drivers Choose Us

Built Different. Built Better.

We're not a general shop that dabbles in transmissions. Gas, diesel, manual, or performance — transmissions are our entire business. From your neighbor's daily driver to a fleet of diesel work trucks, our Timbo, AR facility handles the jobs other shops turn away.

Gas & Diesel Manual & Automatic Performance Builds Fleet & Commercial All Makes & Models Domestic & Foreign

1-Year Unlimited Mile Warranty

Most automatic and manual rebuilds backed by our comprehensive warranty. We stand behind our work, period.

Transmission-Only Specialists

We don't do oil changes or tire rotations. Transmissions are all we do — and that focus shows in our results.

Fair, Transparent Pricing

We quote it straight, stick to it, and explain everything. No surprises on your invoice.

Custom TCM Tuning & Calibration

In-house transmission control module programming for performance builds, ensuring optimal shift behavior for your specific application.

Transparent Pricing

Straightforward Pricing

No surprises, no runaround. Here's what to expect for the most common transmission work — gas, diesel, manual, and performance. We quote you exactly before we touch anything.

Most Common
GAS / AUTO REBUILD
$1,800 starting
6L80, 10L80, 10R80, 4L60E & all common automatics
  • Complete disassembly & inspection
  • New clutch packs, seals & valve body
  • Pump assembly & filter replaced
  • 1-Year / Unlimited Mile Warranty
Get a Quote
Diesel Specialist
DIESEL REBUILD
$2,800 starting
Allison 1000, 68RFE, 5R110, 6R140 & more
  • Complete disassembly & inspection
  • Premium high-energy clutch frictions
  • Pump & valve body rebuild
  • 2-Year / Unlimited Mile Warranty
Get a Quote
MANUAL GEARBOX REBUILD
$1,400 starting
NV5600, G56, NV4500, ZF S6-650 & more
  • Full disassembly & bearing replacement
  • Carbon fiber synchronizers available
  • Shimmed to blueprint tolerances
  • 1-Year / Unlimited Mile Warranty
Get a Quote
HD PERFORMANCE BUILD
$4,500 starting
Billet builds, triple-disc converters, stage kits
  • Triple-disc billet torque converter
  • Billet shafts & upgraded internals
  • Custom TCM tuning & calibration
  • Warranty documented in writing
Get a Quote

All prices are starting points — final cost depends on vehicle, condition, and selected parts. We quote before we start, always.

Customer Reviews

What Our Customers Say

Real feedback from Mountain View drivers and Ozark-region customers who trusted us with their vehicles.

"
Hands down the best transmission shop I've dealt with. They walked me through what was wrong, gave me a fair quote, and stuck to it. My 2023 Explorer shifts smoother now than when I bought it.
MR
Mark R.
Google Review
"
I was nervous about needing a full rebuild, but these guys made it easy. They kept me updated, finished when they said they would, and my truck pulls my fifth wheel like a champ now — firm shifts and way lower transmission temps.
TH
Tom H.
Google Review
"
If you have a 10-speed Duramax that has issues, these guys at Ozark Transmissions in Timbo, AR will get you fixed! They repaired 2 of our fleet trucks when the dealer couldn't. Incredible work.
FI
Fiber I.
Google Review · Fleet Customer
Warranty Coverage

Industry-Leading Warranty Coverage

2-year unlimited mile warranty on diesel rebuilds. Because we build them right the first time.

Gas / Auto Rebuild

1 Year
Unlimited miles. Covers automatic and manual gas transmission rebuilds — parts and workmanship, performed at our Timbo, AR shop.

CVT & Performance

12 Mo.
CVT: 12 months or 12,000 miles. Performance/racing builds covered case-by-case — documented in writing on your invoice.

Full warranty terms, exclusions, and how to make a claim: ozarktransmissions.com/warranty.html

Every Platform. Every Build.

Gas, Diesel & Performance

Every major transmission platform — rebuilt right, tuned right, and backed by our industry-leading warranty coverage.

GAS AUTOMATIC
6L80 · 10L80 · 10R80 · 6R80 · 4L60E · 8HP
GM, Ford, and Chrysler gas automatics for cars, trucks, and SUVs. Full rebuilds, valve body upgrades, TCM calibration. 1-year unlimited mile warranty.
DURAMAX
Allison 1000 / 2000
6.6L LB7 · LLY · LBZ · LMM · LML · L5P. 5-speed through 10-speed. Stage builds, billet upgrades, custom TCM tuning.
CUMMINS
NV5600 · G56 · 68RFE · 47RE/48RE
5.9L & 6.7L ISB. Manual and automatic platforms. Carbon fiber synchros for NV5600/G56. Heavy-duty 68RFE performance builds.
POWER STROKE
5R110 TorqShift · 6R140
6.0L · 6.4L · 6.7L Ford diesel. 5R110 & 6R140 rebuilds with upgraded clutch packs, valve body, and billet shaft options.
EUROPEAN DIESEL
ZF 8HP · ZF 6HP · Aisin
Solenoid matching, mechatronic board diagnostics, full OE-level recalibration. Ram, Jeep, BMW, Land Rover applications.
ALL OTHERS
CVT · Import · Standard
CVT service (12mo/12k warranty), import automatics, and standard manual gearboxes for all makes and models. Call to discuss.

Don't see your platform? Call us — if it's a transmission, we've likely worked on it.

Call (870) 499-2082
Service Area

Serving All of
North-Central AR

Located at 7632 Highway 66 in Timbo, Arkansas, Ozark Transmissions is the transmission specialist for drivers across north-central Arkansas. We regularly serve customers from Mountain View, Mountain Home, Batesville, Clinton, and Heber Springs — and everywhere in between.

Whether you're coming from the Twin Lakes area, the White River corridor, or down from the Greers Ferry Lake region — precision transmission work is worth the drive to Timbo.

Mountain View, AR Mountain Home, AR Batesville, AR Clinton, AR Heber Springs, AR Calico Rock, AR Melbourne, AR Flippin, AR Yellville, AR Marshall, AR Greers Ferry, AR Timbo, AR Stone County Baxter County Independence County Van Buren County Cleburne County Izard County Searcy County
Get Directions

Ozark Transmissions

7632 Highway 66, Timbo, Arkansas 72680

Click "Get Directions" to open
in Google Maps

Transmission Tips & News

From the Shop

Practical advice from our transmission specialists — helping drivers across Mountain View, Mountain Home, Batesville, Clinton and Heber Springs keep their vehicles running right.

Diesel Transmissions

5 Warning Signs Your Allison 1000 Needs Attention

The Allison 1000 is one of the most capable diesel transmissions ever built — but even the toughest units show warning signs before failure. Slipping between gears, delayed engagement, and unusual fluid color are all early indicators that something isn't right. Catching these early can be the difference between a fluid service and a full rebuild.

Ozark Transmissions
Gas Automatics

6L80 vs 10L80: What GM Truck Owners Need to Know

GM's 6L80 has been a workhorse in trucks and SUVs for years. The 10L80 replaced it with more gears and better fuel economy — but also brought new failure patterns. If your Silverado or Tahoe is hunting for gears or shuddering at highway speed, here's what's likely going on and what to do about it.

Ozark Transmissions
Maintenance

How Often Should You Change Transmission Fluid in Arkansas?

Arkansas driving — hilly terrain, hot summers, and plenty of towing — puts extra stress on transmissions. Most manufacturers say 30,000–60,000 miles between fluid changes, but if you're towing, hauling, or driving in the Ozarks regularly, we recommend checking it more frequently. Here's what to look for and when to call us.

Ozark Transmissions

New posts added regularly. Have a transmission question? Call us at (870) 499-2082 — we're happy to talk it through.

Common Questions

Frequently Asked Questions

Everything you need to know before bringing your vehicle in.

Common warning signs include slipping or hesitating between gears, delayed engagement when shifting, grinding or whining noises, a burning smell, transmission warning light, fluid leaks under your vehicle, or difficulty staying in gear. If you notice any of these near Mountain View, Mountain Home, Batesville, Clinton, Heber Springs, or anywhere in the Ozarks — call us at (870) 499-2082.
Yes — we specialize in both automatic and manual (standard) transmissions across all domestic and foreign makes and models. We also handle CVT transmissions, European ZF and Aisin units, and heavy-duty diesel platforms like 10-speed Duramax setups.
Diesel transmission rebuilds carry our best coverage: 2 years, unlimited miles. Gas and automatic rebuilds are covered for 1 year, unlimited miles. CVT transmissions receive 12 months or 12,000 miles. Performance and custom builds are documented in writing on your invoice. All warranty work is performed at our Timbo, AR shop.
Absolutely. We specialize in heavy-duty diesel transmission rebuilds, including 10-speed Duramax and other demanding platforms. We've successfully repaired fleet diesel trucks that even dealerships couldn't fix. Our HD Diesel Series Rebuild features triple-disc billet converters, billet shafts, enhanced lubrication flow, and custom TCM calibration.
Yes — Ozark Transmissions in Timbo, AR serves both Mountain Home (Baxter County) and Heber Springs (Cleburne County). We're the most specialized transmission shop in north-central Arkansas, with 5-star Google reviews and a 1-year unlimited mile warranty on most rebuilds. The drive is worth it.
Yes. We serve Batesville (Independence County) and Clinton (Van Buren County) customers from our Timbo, AR shop. We handle everything from everyday automatic rebuilds to fleet-level diesel work — the kind of jobs local shops and dealerships often turn away.
Request a free quote by scrolling to our contact form, call us at (870) 499-2082, or email info@ozarktransmissions.com. Online booking is available at ozarktransmissions.com/book-online. We're at 7632 Highway 66, Timbo, Arkansas 72680.
Get in Touch

Request a Free Quote

Tell us about your vehicle and what's going on. We'll get back to you fast — usually same day.

Contact Us Directly
What to have ready
  • Year, make, and model of your vehicle
  • Describe the problem (slipping, noise, warning light, etc.)
  • Approximate mileage
  • Whether it's automatic, manual, or diesel

Gas, Diesel, Manual or Performance — We've Got You.

Transmissions are all we do. Call or request a free quote and we'll tell you exactly what's wrong and what it costs — before we start anything.

Call Now Free Quote