3
verified units in stock
2018 Used Nissan Titan Engine For Sale
3 verified 2018 Nissan Titan engines in stock — 5.6L VK56VD V8 gasoline (standard Titan + Titan XD) and 5.0L Cummins ISV turbo-diesel V8 (Titan XD only). VIN-matched, ASE-tested by certified technicians, oil-sample-checked on diesel units, photographed before shipment, backed by up to a 3-year warranty. Free freight nationwide.
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Free Nationwide Shipping
Browse 2018 Nissan Titan sub-models
The 2018 Nissan Titan and Titan XD share a chassis but split on engine: the standard Titan uses Nissan's own 5.6L VK56VD V8 gasoline, while the heavy-duty Titan XD adds the Cummins ISV 5.0L turbo-diesel V8 — a 555-lb-ft, light-truck-class diesel only Nissan offered in this displacement.
Why Buy a 2018 Nissan Titan Engine from Auto Power Source
The 2018 Titan and Titan XD share a chassis but represent two different engine philosophies. The standard Titan runs Nissan's 5.6L VK56VD direct-injected V8 (390 hp, 394 lb-ft) — the same family used in the Armada and the NV vans. The Titan XD pairs an upgraded frame with the optional Cummins ISV 5.0L turbo-diesel V8 (310 hp, 555 lb-ft) — a 32-valve light-truck-class diesel that competes with the Ford 6.7L Power Stroke and Ram 6.7L Cummins on torque, but in a half-ton-plus chassis Ford and Ram did not build. 2018 is the last full year of production before Cummins and Nissan agreed to drop the 5.0L diesel from the lineup, making 2017-2019 the only model-year window for this engine.
Our 3 verified 2018 Titan engines come from low-mileage donor trucks, cataloged by VIN, and inspected by ASE-certified technicians. The 5.6L gas units get full compression and leak-down testing on the bench. The 5.0L Cummins diesel gets oil-sample testing for fuel dilution and coolant intrusion in addition to compression — diesels reveal failure modes oil tells you about long before the bottom end goes. Multi-angle photographs of the actual unit are sent to you for approval before any shipment leaves.
Up to a 3-year warranty plus 30-day money-back, no restocking fees, no return freight charges. Free pallet freight to all 50 states. 46,000+ engines and transmissions shipped, 0% fitment-related returns, Excellent Customer Reviews on Trustpilot.
📱 Fastest way to match: text us your VIN, get options in minutes.
Text Your VIN →
Your 2018 Titan Engine Options: Compared
Most Nissan owners face four real choices when their engine fails:
← Swipe sideways to see all columns →
| Option |
Cost |
Reliability |
Warranty |
Fitment Match |
| Used OEM (this collection) |
$$$ Best Value |
High |
Up to 3 years |
VIN-matched |
| New OEM (dealer) |
$$$$$ 2-4× more |
High |
Manufacturer |
Exact |
| Aftermarket / Reman |
$$$$ |
Varies |
6-12 mo |
May adapt |
| Junkyard |
$ Cheapest |
Unknown |
None |
DIY |
Tested used OEM hits the sweet spot — same engineering as new, fraction of the cost.
2018 Nissan Titan Engine Buying Guide
Five things to verify before buying a 2018 Titan or Titan XD engine:
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Confirm Titan (light duty) vs Titan XD (heavy duty) chassis. Engine mounts, oil pans, and exhaust manifolds differ between the two trucks even when both run the 5.6L gas V8.
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For Titan XD, choose 5.6L gas (VIN A) or 5.0L Cummins diesel (VIN B) — never assume. These two engines share NO common parts. Different cradle, different mounts, different harness, different fuel system.
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For 5.0L Cummins, ask about EGR cooler and DPF state. The 5.0L ISV has known EGR-cooler service items; a well-cataloged donor saves you a $1,500+ repair down the road.
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Specify 4x2 vs 4x4 — bellhousing accessories differ. The transmission flange and bellhousing accessory pattern are different between drivetrains.
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Get the build date. 2018 Titan production spans 11/01/17 (early MY) to mid-2018; certain harness updates split production roughly in the middle.
Our ASE-certified technicians verify every one of these points against your VIN before any engine ships.
Frequently Asked Questions
What is the warranty?
All 2018 Titan engines include a warranty up to 3 years, depending on the specific unit.
What does ASE-tested mean?
ASE-certified technicians compression-test every cylinder and run leak-down evaluation on engines. Transmissions are Shift-Tested through all gears. Plus noise & smoke verification, visual inspection, and multi-angle photography before shipment.
How long until delivery?
Prep and ship time is 3-5 business days. Transit time is 2-3 business days after dispatch via freight carrier.
Can I see photos before I buy?
Yes. Multi-angle photos of the actual unit sent before payment.
Do I need my VIN?
Strongly recommended for exact-fit matching.
What if I do not approve the photos?
Every dollar back. No restocking fees, no return freight charges. Pay first, see your exact unit, ship third — full refund if you do not approve.
Why cheaper than dealer new?
Used OEM from low-mileage donors. Same Nissan engineering.
When can I reach customer service?
24 hours Monday through Saturday.
46,000+
engines + transmissions shipped
0%
fitment-related returns
All 50
states covered, free freight
Excellent Customer Reviews
rated on Trustpilot
Our 6-Step Inspection & Shipping Process
Every unit we ship has been through these six steps:
1. VIN-MatchingWe match the donor VIN to your VIN to confirm engine code, emissions calibration, and drivetrain fit.
2. Tested & VerifiedASE-certified technicians compression-test every cylinder and run leak-down evaluation on each engine. Transmissions are Shift-Tested through all gears.
3. Noise & Smoke VerificationEngines are run on the test stand to verify normal mechanical sound, clean exhaust, and no abnormal smoke — catches internal wear static pressure tests miss.
4. Visual InspectionEvery accessible component is inspected: turbos, manifolds, valve covers, accessories, sensor harnesses.
5. Photograph & CatalogMulti-angle photos sent to you BEFORE we ship for your approval.
6. Palletize & ShipStrapped on a heavy-duty wooden pallet, shipped via freight at no charge.
What Our Customers Say
Rated Excellent by our customers on Trustpilot. Real reviews from our Trustpilot profile.
★★★★★
Verified Trustpilot
Jeep Commander engine
"Extraordinary experience from payment to delivery. I am back on the road. Communication was excellent."
— John Williams, 2025-10-26
★★★★★
Verified Trustpilot
Very professional
"Very professional and secure of what you doing"
— Roberto Villatoro, 2026-05-12
★★★★★
Verified Trustpilot
Great communication
"Catherine was able to assist me in finding the correct transmission for my car and made the process very simple and straightforward."
— Dan, 2026-05-06
★★★★★
Verified Trustpilot
Transaction was perfect
"Found me the right engine at a great price. Got it in 2 days and installed the car the next day. Engine runs absolutely beautiful."
— KEVIN GRAHAM, 2026-04-29
Our Photos-Before-Shipment Guarantee
Before any engine leaves our warehouse, we dismantle the donor unit and send you multi-angle photographs. You approve. If you do not approve, you get every dollar back — no questions, no restocking fees, no return freight charges. On top of 30-day money-back and up to 3-year warranty. Have a question about the guarantee or your specific order?
✉ Email Us at info@autopowersource.com
