Used TH350 / TH400 for Sale — VIN-Verified.
VIN-verified used and remanufactured transmissions for Houston drivers — tested, warrantied, and ready to ship from Pasadena. 0% restocking, ever.
Used & remanufactured TH350 / TH400 — VIN-verified, tested, and shipped nationwide from our Pasadena, TX facility. Fits Classic Chevy/GMC C/K trucks, Camaro, Chevelle, Corvette, Cadillac.
The TurboHydramatic TH350 and heavy-duty TH400 (3L80) are GM's classic 3-speed automatics — fully hydraulic with no electronics. Because they're non-computer units, fitment comes down to bolt pattern, tailshaft and yoke, so we VIN- or application-match and pressure/shift-test each one. No PCM relearn needed; just verify kickdown linkage or vacuum modulator setup. Ultra Auto Parts TX is Houston's drivetrain specialist for quality used and remanufactured transmissions, based at 5041 Spencer Hwy Ste 101 in Pasadena, TX 77505. Transmissions are one of our four core specialties (alongside engines, transfer cases, and differentials), so every unit we sell is pressure-tested, shift-verified, and matched to your exact vehicle before it ships — not pulled blind from a salvage row. We stock automatic transmissions, CVTs, and select manual gearboxes for domestic and import cars, trucks, SUVs, and heavy-duty diesels. Serving Pasadena, Houston, Deer Park, Baytown, and the greater Gulf Coast, our bilingual (English/Spanish) team confirms fitment by VIN and transmission tag number, quotes honest ranges, and backs the sale with a real warranty — so you buy with confidence and avoid a second wasted install.
Known issues we check on the TH350 / TH400
The TH350 and heavy-duty TH400 (3L80) are fully hydraulic 3-speeds with no electronics, so failures are mechanical: worn clutch packs and bands, a leaking front pump or rear seal, and on the TH350 a worn kickdown/detent cable, on the TH400 a failing vacuum modulator. We pressure- and shift-test each unit and application-match by bolt pattern, tailshaft, and yoke. No PCM relearn is needed — just verify kickdown linkage or modulator setup.
Used vs. remanufactured TH350 / TH400 — which to buy
A tested used TH350 or TH400 is a value when the clutches and pump check out, and ours are shift-tested first. Remanufactured makes sense on a build you plan to keep or drive hard, where fresh clutches, bands, and seals plus a longer warranty are worth it. We carry both and application-match by bolt pattern and tailshaft. Tell us your setup and we recommend the right unit honestly.
Why buy a quality used transmissions?
A tested used or remanufactured transmission is often the smartest money in the whole repair. A local overhaul depends entirely on one shop’s own bench and can hide the same worn hard parts, while a new OEM unit can cost thousands more. Our used units come from low-mileage donors and are bench/pressure tested; reman units are built to OEM spec with a longer warranty. You get proven hardware, VIN-matched fitment, and a warranty in writing.
Common signs you need a replacement
Signs your transmission is failing: slipping between gears or high RPM without acceleration, hard or delayed shifts, dropping into limp mode, torque converter shudder around 40–50 mph, no reverse or no forward engagement, burnt-smelling fluid, and codes like P0700, P0730, or P0740. Once these appear, replacement is usually more reliable than a patch.
| 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
- Bellhousing bolt pattern must match your engine family (LS 5.3 vs 5.7, etc.)
- 2WD vs 4WD/AWD — tailshaft/output housing and length differ
- Valve body, tune, or calibration must match the year/trim
- Final drive / gear ratio must match axle for correct speed and shift
- VIN + transmission tag/ID number must be cross-checked, not just year/make/model
- Post-install PCM/TCM programming or adaptive relearn often required
Heavy-duty diesel transmissions — Allison 1000, Ford 5R110/6R140, and Dodge 68RFE/48RE — are available for Duramax, Powerstroke, and Cummins trucks that tow and haul.
What to send for an exact quote
- VIN (best — confirms exact fitment)
- Year / make / model / trim
- Transmission code or tag/ID number
- 2WD, 4WD, or AWD
- Engine size (displacement)
Every transmission carries a 6-month standard warranty, extendable up to 3 years on qualifying used and remanufactured units. And like all our parts, transmissions ship with 0% restocking fee on any return — ever.
Local Houston-area delivery is free with our own drivers; regional deliveries are a flat paid rate and out-of-state ships at exact carrier cost — send your ZIP and we'll confirm.
How It Works
FAQ — Used Transmissions in Houston, TX
Where can I buy a used TH350 or TH400 transmission near me in Houston?
Ultra Auto Parts TX stocks tested TH350 and TH400 transmissions at 5041 Spencer Hwy Ste 101 in Pasadena, near Houston. We offer free local Houston delivery and nationwide shipping, open Monday through Friday 8 to 5 Central, English and Spanish. Call or text 281-436-9991 with your application details.
How much does a used TH350 or TH400 cost?
Price depends on the exact unit, condition, and used vs remanufactured. We never quote from memory — send your application details to 281-436-9991 for the correct tested unit. Every order carries a 0% restocking fee, so there is no risk if plans change.
How do you verify a TH350 or TH400 fits my build?
Because these are non-computer units, fitment comes down to engine bolt pattern, tailshaft length, and output yoke, so we application-match those and verify kickdown linkage or vacuum-modulator setup. We pressure- and shift-test before shipping. Reach us at 281-436-9991 to confirm fitment.
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.
Looking for a used transmission in Houston, TX? Ultra Auto Parts TX in Pasadena stocks tested, VIN-verified used and remanufactured automatic transmissions, CVTs, and diesel units for cars, trucks, and SUVs — GM 6L80E, Ford 10R80, Chrysler 68RFE, Allison 1000, JATCO CVT and more. Every transmission is pressure- and shift-tested, matched to your vehicle by VIN and tag number, and backed by a 6-month-to-3-year warranty with 0% restocking fee. Serving Pasadena, Houston, Deer Park, and Baytown with free local delivery.