Differentials in Round Rock, 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.
Ultra Auto Parts TX ships VIN-verified, tested used & remanufactured engines, transmissions, transfer cases and differentials to Round Rock, Williamson County with fast Texas-wide shipping — each unit matched to your exact vehicle by VIN before it leaves our Pasadena facility. Round Rock is a fast-growing tech suburb north of Austin with heavy I-35 commuting. Ultra Auto Parts TX ships VIN-verified used and reman drivetrain parts statewide to Round Rock.
Differentials in Round Rock, Williamson County
Need differentials in Round Rock, TX? Ultra Auto Parts TX supplies VIN-verified, tested differentials to Round Rock drivers — matched to your exact vehicle, backed by a 6-month to 3-year warranty and a 0% restocking fee, with fast Texas-wide shipping to Round Rock and nearby Pflugerville.
Round Rock built its identity around Dell Technologies and rapid suburban growth just north of Austin. Commuters share I-35 with the SH-45 and SH-130 tollways and US-79, funneling daily traffic between corporate campuses, the Dell Diamond area, and expanding subdivisions. As one of the metro's fastest-growing communities, Round Rock keeps a large fleet of commuter sedans, crossovers, and family SUVs on the road, plus pickups tied to the construction feeding all that new development. The I-35 bottleneck through Williamson County means long stretches of stop-and-go that wear transmissions and heat engines hard. When a drivetrain component fails, Ultra Auto Parts TX supplies VIN-verified, tested used and remanufactured engines, transmissions, transfer cases, and differentials to Round Rock with fast Texas-wide shipping, matching each unit to the exact vehicle before it ships.
Round Rock and neighboring Pflugerville, Hutto, and Cedar Park host a growing set of independent shops serving tech-corridor commuters and the construction trades expanding the suburbs. Their customers run everything from efficient daily drivers to heavy-duty work trucks, and a wrong-fit drivetrain part means a missed commute or a stalled job. Ordering a used engine or transmission blind from a distant seller invites variant mismatches, undisclosed core wear, and no real recourse. A VIN-verified, tested unit shipped from an established Texas drivetrain specialist lets a Round Rock mechanic confirm the part against the customer VIN, install once, and back the work with a warranty, keeping a fast-moving suburb's commuters and contractors on schedule instead of waiting on a redo.
Round Rock is a fast-growing tech suburb north of Austin with heavy I-35 commuting. Ultra Auto Parts TX ships VIN-verified used and reman drivetrain parts statewide to Round Rock. Serving Round Rock and nearby Pflugerville, Cedar Park, Georgetown, Hutto in Williamson County — one call for the whole drivetrain: engines, transmissions, transfer cases and differentials, VIN-matched to your exact vehicle.
ZIP codes we serve in Round Rock, TX
- Serving Round Rock, Williamson County + nearby Pflugerville, Cedar Park, Georgetown
- fast Texas-wide shipping to Round Rock ZIPs: 78664, 78665, 78681
- VIN-verified fitment · tested drivetrain · 0% restocking · 6mo–3yr warranty · bilingual
Get a VIN-matched differentials for your Round Rock vehicle below, or see the full Differentials guide, FAQ & inventory for all the details.
| 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 |
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Send Name + Phone + Part + ZIP. VIN recommended for exact fitment.
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FAQ — Differentials in Round Rock, 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 WhatsApp 832-373-0342, 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 — rebuilt to OEM spec with new bearings and gears — carry the longest coverage. Ask us about tiered/extended options when you get your quote.
Ultra Auto Parts TX is a used and remanufactured drivetrain-parts dealer in Pasadena, TX (Houston metro), serving Round Rock and Williamson County. 5041 Spencer Hwy Ste 101, Pasadena TX 77505 · (281) 436-9991 · Mon–Fri 8am–5pm CT · Bilingual · 0% restocking · 6mo–3yr warranty.