Used Duramax LBZ 6.6L for Sale — VIN-Verified.
Powerstroke, Duramax & Cummins — VIN-verified, tested diesels for Houston trucks, shipped right the first time. 0% restocking, ever.
Used & remanufactured Duramax LBZ 6.6L — VIN-verified, tested, and shipped nationwide from our Pasadena, TX facility. Fits Chevy/GMC 2500HD/3500HD (2006-2007).
The LBZ is the last pre-DPF Duramax (EGR-equipped but no particulate filter), which is why it's so sought after — we VIN-verify you're actually getting an LBZ and not a later emissions variant. Known weak points we inspect include cracked pistons on tuned trucks and injector wear. Every engine is compression- and leak-tested before we give you a number, long-block or complete. Ultra Auto Parts TX is Houston's drivetrain specialist for used and remanufactured diesel engines, serving Pasadena, Deer Park, Baytown, La Porte, Channelview and the wider Gulf Coast truck market from our shop at 5041 Spencer Hwy, Ste 101, Pasadena, TX 77505. In a region built on work trucks, fleets and towing, we focus on the three diesel platforms Texans actually run — Ford Power Stroke, GM Duramax and Dodge/Ram Cummins — and match every long block or complete engine to your exact VIN before it ships. Unlike a general salvage yard, we treat diesels as core drivetrain, not random inventory. Every used diesel engine is VIN-verified against your truck's year, cab and emissions configuration, then inspected and tested before we quote a firm price. We speak English and Spanish, respond within 10 minutes during business hours, and back every diesel with a real warranty — so Houston owner-operators and shops buy with confidence.
Known issues we check on the Duramax LBZ
The 2006-2007 LBZ is the last pre-DPF Duramax and highly sought-after, but tuned trucks are prone to cracked pistons from added power, so we inspect the bottom end closely. We also check for injector wear, which is common as these engines age and rack up miles. Because many LBZ trucks were modified, we verify the engine has not been abused before we quote. Every LBZ is VIN-matched to your 2500HD or 3500HD and drivetrain-tested in Pasadena first.
Used vs. remanufactured Duramax LBZ — which to buy
A clean tested used LBZ is prized because this generation is so desirable, and ours are inspected for piston and injector condition before shipping. Remanufactured is the safer route if you plan to tune or tow heavy, since factory pistons are the weak point under added power. We carry both and will steer you straight based on how you use the truck. Send your VIN and we will tell you honestly which fits your plans and budget.
Why buy a quality used diesel engines?
A diesel is the most expensive component in the truck, and a proper machine-shop overhaul often runs $8,000–$15,000+ once you add gaskets, injectors, machine work and labor. A quality tested used engine or a reman built to OEM spec gets you back on the road faster, at a fraction of that cost, with a warranty covering the assembly — not a shop's one-off labor guarantee. For a work truck losing money every day it's down, verified used or reman is usually the smarter math.
Common signs you need a replacement
We know these platforms cold: 6.0L Power Stroke head-gasket and stretched-head-bolt failures, EGR and oil-cooler issues; 6.4L Power Stroke cracked pistons; LB7 Duramax injector failures and later LLY overheating; Cummins 5.9L (12v/24v) VP44 and lift-pump issues, 6.7L DPF/EGR and injector wear; and high-mileage blowby on all three. We inspect for exactly these before quoting.
| 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
- Year-specific emissions hardware (EGR/DPF/SCR) must match your truck
- Long block vs complete drop-in engine — confirm what's included
- VIN 8th-digit engine code identifies the exact diesel variant
- Cab & chassis vs pickup accessories and oil-pan/turbo differences
- Automatic vs manual transmission flexplate/flywheel and sensors
- California vs federal (49-state) emissions calibration
Diesel drivetrain is our specialty — alongside engines we also supply matched heavy-duty transmissions (Allison, TorqShift, 68RFE, ZF), transfer cases and Dana/AAM axles for the same trucks.
What to send for an exact quote
- VIN (best — locks exact fitment)
- Year/make/model (F-250/2500/3500, Silverado/Sierra HD, Ram HD)
- Engine (Power Stroke/Duramax/Cummins + displacement)
- Cab type (regular/extended/crew, pickup or cab-&-chassis)
- Mileage expectation and used vs. reman preference
Every used diesel engine carries a standard 6-month warranty, extendable up to 3 years on tiered/reman options. And we charge a 0% restocking fee on all returns — no penalty for making it right.
Diesel engines are heavy freight — local Houston-area delivery is free with our own drivers, while regional and out-of-state moves ship by freight at exact or quoted cost; we confirm the timing before we promise it.
How It Works
FAQ — Used Diesel Engines in Houston, TX
Where can I buy a used Duramax LBZ engine near me in Houston?
Ultra Auto Parts TX stocks tested Duramax LBZ engines at 5041 Spencer Hwy Ste 101 in Pasadena, near Houston. We offer free local Houston delivery and nationwide shipping on this in-demand engine. We are open Monday through Friday 8 to 5 Central and help customers in English and Spanish. Call 281-436-9991 or text 281-436-9991 with your VIN.
How much does a used Duramax LBZ engine cost?
LBZ pricing depends on mileage, used versus remanufactured, and demand for this sought-after generation. We do not quote from memory, so send your VIN and we price the correct tested unit for your 2500HD or 3500HD. Every purchase carries a 0% restocking fee, so there is no risk if plans change. Reach us at 281-436-9991.
How do you verify a Duramax LBZ fits my truck and was not abused?
We match by VIN to the correct 2006-2007 configuration and inspect the pistons and injectors, since tuned LBZ trucks often show bottom-end wear. Because this engine was frequently modified, we verify condition before quoting so you are not buying an abused core. Send your VIN to 281-436-9991 for confirmed fitment and condition.
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 diesel engine in Houston, TX? Ultra Auto Parts TX in Pasadena supplies VIN-verified, tested used and remanufactured Ford Power Stroke (7.3L, 6.0L, 6.4L, 6.7L), GM 6.6L Duramax and Dodge/Ram Cummins (5.9L, 6.7L) diesel engines for F-250/F-350, Silverado/Sierra 2500HD/3500HD and Ram HD trucks. As Houston's drivetrain specialist we match by VIN and emissions year, back every diesel with a 6-month to 3-year warranty and 0% restocking, and serve the whole Gulf Coast in English and Spanish.