Used & Reman Differentials in Houston, TX — VIN-Verified.
Used & remanufactured differentials and rear axle assemblies — VIN-verified for the correct gear ratio, tested, and shipped from Pasadena. 0% restocking, ever.
Serving Houston, Pasadena and the surrounding metro with VIN-verified drivetrain parts.
Ultra Auto Parts TX is Houston's drivetrain specialist, and differentials and rear axle assemblies are squarely in our wheelhouse. From our shop at 5041 Spencer Hwy in Pasadena, we stock and source used and remanufactured differentials for trucks, SUVs and cars across the Houston metro — Ford 8.8 and 9.75, GM 10-bolt and 14-bolt, Dana 44 and Dana 60, Chrysler 9.25 and Toyota 8-inch. Every axle gets verified against your VIN and axle tag before it leaves. Drivetrain is our specialty, not a sideline — while general salvage yards sell whatever rolls in, we test differentials on backlash gauges and gear-pattern analyzers and match them to your exact gear ratio and traction setup. Whether you need a complete third member, a full-float rear axle assembly, or a limited-slip carrier, our bilingual (English/Spanish) team helps Houston, Pasadena, Deer Park and Pearland drivers get the right part the first time.
Why buy a quality used differentials?
A used or remanufactured differential is a fraction of new or dealer cost, and a complete used rear axle assembly often drops in with housing, carrier, gears and axle shafts already matched. Low-mileage salvage units from the same year/make/model carry the correct ratio and spline count, so you avoid guessing. Reman is built to OEM spec with new bearings and a fresh gear set for longer life and a stronger warranty.
Common signs you need a replacement
Failing differentials give warning signs: howling or whining that changes with speed (worn ring-and-pinion or bad bearings), a clunk on acceleration (worn spider/side gears or excess backlash), metal-flake in the fluid, and chatter on turns from a tired limited-slip. Ignored, spider gear failure or a spun bearing can lock or destroy the axle — replacing the unit is often smarter than a partial fix.
| Feature | Ultra Auto Parts TX | Typical salvage yard |
|---|---|---|
| Restocking fee | 0% — ever | ~20% |
| Warranty | 6 mo – 3 yr | 6 mo flat |
| Fitment | VIN-verified to your vehicle | Not verified |
| Drivetrain testing | Specialized per component | General salvage |
| Service | Bilingual · 10-min response | Varies |
Quick Quote Fastest lead
Send Name + Phone + Part + ZIP. VIN recommended for exact fitment.
Fitment Flags We Check
- Gear ratio MUST match the other axle (and speedometer/PCM) — 3.42 vs 3.73 will not mix on 4WD
- Open vs. limited-slip vs. locker changes the carrier and behavior — confirm what you have
- ABS/traction tone (reluctor) ring tooth count must match your sensor
- Axle width, spline count and flange/bolt pattern vary within the same axle family
- Drum vs. disc rear brakes affect the axle ends and backing plates
- Verify with VIN plus the axle tag / door-jamb RPO or axle code — not just year/make/model
Heavy-duty axles for diesel and tow rigs — Dana 60/70, GM 10.5 14-bolt full-float, and AAM 11.5 out of F-250/350, 2500/3500 and Ram HD trucks — are available and matched to your GVWR and ratio.
What to send for an exact quote
- VIN (best — locks ratio, traction type and spline)
- Year / make / model / trim
- Gear ratio (from the axle tag or door-jamb RPO)
- Open or limited-slip / locker
- Front or rear, and 2WD or 4WD
Every differential and rear axle carries our standard 6-month warranty, extendable up to 3 years on eligible units, with 0% restocking fee on returns — ever. Reman axles get the longest coverage.
Local Houston-area delivery is free with our own drivers; regional runs are a flat $100–200 and out-of-state ships at exact freight cost quoted up front — no surprise fees.
Popular Differentials by Make & Model
Browse by brand — every unit tested, VIN-verified, and warrantied.
Toyota / Lexus
1 modelFord
3 modelsRam / Jeep / Mopar
9 modelsGM / Chevy
4 modelsHow It Works
Overhaul, repair, or replace your rear end?
A howling, whining, or clunking rear end usually points to worn ring-and-pinion gears, failed bearings, or spider-gear damage — and the right fix depends on how far it has gone. A fresh fluid issue or a single bad bearing caught early can be worth a targeted repair. Once the ring and pinion are worn or the carrier is damaged, though, an overhaul is labor-intensive and quality depends entirely on the shop, so a complete VIN-matched used or reman differential is often the faster, more reliable path back on the road. We match the correct gear ratio and carrier type so the axle drops in and drives right the first time, backed by a 6-month to 3-year warranty and a 0% restocking fee. Tell us the symptom and your VIN and we will tell you honestly whether to repair or replace.
Axle codes & gear ratios we match
We match differentials, rear ends, and complete rear axle assemblies by VIN, axle tag, and RPO code so you get the exact gear ratio and carrier type. Ford: 8.8-inch (28/31-spline, 3.31–4.10), 9.75-inch, and the classic 9-inch third member. GM: 8.5-inch 10-bolt, 9.5-inch 14-bolt semi-float, and 10.5-inch 14-bolt full-float for 1-ton trucks. Dana: 30, 35, 44, 60, 70, and 80 for trucks, Jeeps, and duallies. Chrysler 8.25 and 9.25, AAM 9.25 and 11.5, and Toyota 8-inch. We stock open, limited-slip (posi), and locker carriers in common ratios like 3.42, 3.73, and 4.10. Send your VIN or read the axle tag on the rear cover, and we will confirm the ring-gear size, spline count, and ratio before anything ships — Ford 8.8 rear ends, GM 14-bolt axles, and Dana 60s are among our most-requested.
FAQ — Differentials in Houston, TX
Where can I buy a used differential or rear axle in Houston?
Ultra Auto Parts TX at 5041 Spencer Hwy, Ste 101, Pasadena, TX 77505 (Houston area) stocks and sources used and remanufactured differentials — Ford 8.8, GM 10-bolt/14-bolt, Dana 44/60 and more. Call (281) 436-9991 or text 281-436-9991, Mon–Fri 8–5 CT. We're Houston's drivetrain specialist, so differentials are our specialty.
How do I find my gear ratio, and why does it have to match?
Your gear ratio (e.g., 3.42, 3.73, 4.10) is stamped on the axle tag or listed as an RPO/axle code on the driver's door jamb. The ratio must match your other axle and speedometer/PCM — on a 4WD, a mismatched front and rear ratio causes bind, driveline wear and errors. Send us your VIN and we'll confirm the exact ratio before shipping.
What warranty comes with a used differential?
A standard 6-month warranty, extendable up to 3 years on eligible units. Remanufactured axles — built to OEM spec with new bearings and gears — carry the longest coverage. Ask us about tiered/extended options when you get your quote.
Is there a restocking fee if the axle doesn't work out?
No. We charge a 0% restocking fee on all returns — ever. If a part isn't right, we make it right and expedite the correct differential fast. Many general salvage yards charge 20%; we don't.
How do you make sure the differential fits my vehicle?
We verify fitment against your VIN plus the axle tag or door-jamb RPO — confirming ratio, open vs. limited-slip, spline count, axle width, ABS tone-ring teeth and drum vs. disc ends. VIN-first matching is why our Houston customers avoid wrong-part trips.
¿Tienen diferenciales usados para mi troca en Houston?
Sí. En Ultra Auto Parts TX (5041 Spencer Hwy, Pasadena, TX 77505) somos especialistas en drivetrain y tenemos diferenciales y ejes traseros usados y remanufacturados — Ford 8.8, GM 10-bolt y 14-bolt, Dana 44/60 y más. Mándanos tu VIN por texto al 281-436-9991 y confirmamos el ratio exacto (3.42, 3.73, 4.10) y si es open o limited-slip. Garantía de 6 meses hasta 3 años y 0% de cargo por devolución.
What's the difference between a rear end, a differential, and a rear axle?
People use them interchangeably. The differential (or third member/carrier) is the gearset that splits power to the wheels; the rear end or rear axle is the complete assembly — housing, axle shafts, and differential together. We sell both the complete assembly and, on many applications, just the center section, all VIN-matched to your ratio.
Do you sell limited-slip (posi) rear ends?
Yes. We stock open, limited-slip (posi), and locker carriers in common gear ratios like 3.42, 3.73, and 4.10. Tell us your VIN or axle tag and we confirm the exact carrier type and ratio before it ships.
How do I read my axle tag to find my gear ratio?
The gear ratio is stamped on the axle tag (usually on a differential cover bolt) or encoded in your RPO/axle code. Send us a photo of the tag or your VIN and we will decode the ring-gear size, spline count, and ratio for you.
Open vs. limited-slip (posi) — which do I need?
It has to match what your vehicle came with (or the setup you want). An open differential sends power to one wheel; limited-slip (posi) splits power for better traction when towing or in the rain. Tell us your VIN or axle tag and we confirm open vs. limited-slip plus the exact ratio before it ships.
Do you carry both front and rear differentials?
Yes — front and rear differentials and complete axle assemblies for 4x4 trucks and SUVs, VIN-matched to your ratio and spline count. Send your VIN and we'll pull the correct front or rear unit for your vehicle.
Is there a core charge on a used differential?
Most tested used differentials have no core charge — any deposit or exchange is stated clearly on your quote up front, never a surprise. And with a 0% restocking fee there's no penalty risk if it doesn't work out.
Is the differential inspected before it ships?
Yes. We check backlash, gear pattern, and bearing condition and confirm the ratio before it leaves our Pasadena shop — specialist testing you won't get pulling a random axle from a salvage yard. Every unit is VIN-matched and warrantied.
used vs. remanufactured differential — what's the difference?
A used differential is a tested unit matched to your ratio (lowest cost). A remanufactured unit gets new bearings, seals, and setup to spec with a longer warranty. We carry both — send your VIN and we'll price them side by side.
How fast can I get a differential?
Most VIN-matched differentials ship quickly, with free local delivery across the Houston area and nationwide shipping elsewhere. Send your VIN to 281-436-9991 and we'll confirm availability and timing the same day.
Ultra Auto Parts TX is a used and remanufactured drivetrain-parts dealer in Pasadena, TX (Houston metro). 5041 Spencer Hwy Ste 101, Pasadena TX 77505 · (281) 436-9991 · Mon–Fri 8am–5pm CT · Bilingual · 0% restocking · 6mo–3yr warranty.
Shopping for a used differential or rear axle assembly in Houston TX? Ultra Auto Parts TX in Pasadena is Houston's drivetrain specialist for used and remanufactured differentials — Ford 8.8 and 9.75, GM 10-bolt and 14-bolt, Dana 44, Dana 60, Chrysler 9.25 and Toyota 8-inch. Every unit is VIN-verified for the correct gear ratio (3.42, 3.73, 4.10) and open vs. limited-slip setup, tested, and backed by a 6-month to 3-year warranty with 0% restocking. Bilingual service.
Diferenciales Usados en Houston, TX
¿Buscas un diferencial o eje trasero completo en Houston? En Ultra Auto Parts TX en Pasadena, TX somos especialistas en diferenciales usados y remanufacturados — Ford 8.8 y 9.75, GM de 10 y 14 birlos, Dana 44, Dana 60, Chrysler 9.25 y Toyota de 8 pulgadas. Verificamos cada diferencial por VIN para que traiga la relación de corona y piñón correcta (3.42, 3.73, 4.10) y el tipo correcto (abierto o de deslizamiento limitado/limited slip). Todo va probado y con garantía de 6 meses hasta 3 años y 0% de cargo por devolución. Somos especialistas en tren motriz, no un deshuesadero cualquiera. Entrega local gratis en Houston, Pasadena y toda el área, más envío a todo el país. Te atendemos en español, rápido. Mándanos el VIN por texto al (281) 436-9991 o llama al (281) 436-9991 para tu diferencial usado cerca de ti.
¿Venden diferenciales y ejes traseros usados en Houston?
Sí, en Ultra Auto Parts TX en Pasadena. Diferenciales usados Ford 8.8/9.75, GM 10 y 14 birlos, Dana 44/60 y más — verificados por VIN con la relación correcta. Llama o manda texto al (281) 436-9991.
¿Cómo sé la relación de mi diferencial?
La verificamos por VIN y por la etiqueta del eje para darte la relación correcta (3.42, 3.73, 4.10) y el tipo (abierto o posi/limited slip). Mándanos tu VIN y lo confirmamos.
¿Tienen diferenciales posi (deslizamiento limitado)?
Sí, manejamos diferenciales abiertos y de deslizamiento limitado (posi). Todos con garantía de 6 meses a 3 años y 0% de devolución.
What Houston Says About Us
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