Used Duramax L5P 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 L5P 6.6L — VIN-verified, tested, and shipped nationwide from our Pasadena, TX facility. Fits Chevy/GMC 2500HD/3500HD (2017-present).
The L5P runs a full DPF/SCR/DEF emissions system and a high-pressure common-rail fuel setup, so we VIN-verify the exact year and inspect the fuel system carefully before quoting. We check for injector and high-pressure pump condition plus overall bottom-end health. Every unit is tested, and we specify long-block versus complete so you know exactly what you're buying. 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 L5P
The 2017-plus L5P runs a full DPF, SCR, and DEF system with a high-pressure common-rail, so we verify injector and high-pressure pump condition along with overall bottom-end health. These are strong engines, but the high-pressure fuel side is where problems show up, and contaminated fuel can cause expensive damage. We check the aftertreatment and fuel system before quoting. Every L5P is VIN-matched to your 2500HD or 3500HD and drivetrain-tested in Pasadena before it ships.
Used vs. remanufactured Duramax L5P — which to buy
A tested used L5P is an excellent value on this newer, robust engine when the fuel system and bottom end check out, and ours are inspected for exactly that. Remanufactured makes sense if you tow heavy or want the high-pressure pump and injector concerns addressed from the start with a longer warranty. We carry both and match to your budget. Send your VIN and we will tell you honestly which is right for your L5P truck.
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 L5P engine near me in Houston?
Ultra Auto Parts TX stocks tested Duramax L5P engines at 5041 Spencer Hwy Ste 101 in Pasadena, near Houston. We offer free local Houston delivery and nationwide shipping. 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 for a tested engine.
How much does a used Duramax L5P engine cost?
L5P pricing depends on mileage, used versus remanufactured, and the exact 2017-plus configuration your truck needs. Since it is a newer engine, we quote only after seeing your VIN so the unit is correct. Every purchase carries a 0% restocking fee, so there is no risk if plans change. Send your VIN to 281-436-9991.
How do you verify an L5P fits and the fuel system is healthy?
We match by VIN to the correct 2017-plus configuration and confirm the DPF, SCR, and DEF hardware lines up with your 2500HD or 3500HD. We also inspect the high-pressure pump, injectors, and bottom end before quoting, since the common-rail fuel side is the known concern. Send your VIN to 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 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.