2001 Used Nissan Engines For Sale

16
verified 2001 Nissan engines
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2001 Used Nissan Engines For Sale

Every 2001 Nissan engine we hold today, sorted by engine code rather than by badge. 2001 is the year the Pathfinder runs two different V6s and the 4th VIN digit D covers a 3.5L V6, a 2.4L truck four and a 1.8L Sentra four at once. Each unit is VIN-matched, ASE-tested and photographed before it ships.

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2001 Nissan Engine Families

Which engine sits under which 2001 Nissan, and how many of each we hold today.

Engine family Fits (2001) In stock
1.8L QG18DE four Sentra 1.8 XE and GXE, split across VIN C and VIN D by trim, twin-cam chain-driven 4
3.3L VG33E V6, longitudinal Frontier and Xterra at VIN E plus Pathfinder 3.3 at VIN A, rear-drive pan, brackets and intake routing 3
3.5L VQ35DE V6, longitudinal Pathfinder 3.5 at VIN D in both AT and MT, the 3.5L's first year in this body 2
2.4L KA24DE four, longitudinal Frontier and Xterra 2.4 at VIN D, twin-cam chain-driven truck four 2
2.4L KA24DE four, transverse Altima 2.4 at VIN D, front-drive sump and accessory drive, final year of this Altima 1
3.3L VG33E V6, supercharged Frontier supercharged option at VIN M, lower compression plus its own intake and boost hardware 1
3.3L VG33E V6, transverse Quest minivan at VIN T in the 8th digit, front-drive pan and accessory drive 1
3.0L VQ30DE V6 Maxima at VIN C, the final model year of the 3.0L before the 3.5L takes over 1
2.0L SR20DE four Sentra 2.0 at VIN B, the twin-cam SR's last Sentra year 1
Total 16

Other Nissan Model Years

Every model year we hold Nissan engines for. Years without a link are in stock but have no year page yet — text us your VIN.

202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001
2000
1999
199819971996199519941993199219911990

Why Buy a 2001 Nissan Engine from Auto Power Source

The single most useful thing to know before you buy a 2001 Nissan engine is that the Pathfinder changes engines inside this one model year. We hold both: the 3.3L VG33E at VIN A and the 3.5L VQ35DE at VIN D, in the same R50 body. They are not interchangeable — different block, different accessory drive, different mounts and wiring — so the badge on the tailgate settles nothing. The printed code or your VIN does.

The 4th VIN digit D is the widest letter of this model year and it carries three unrelated engines. It is the 3.5L VQ35DE in the Pathfinder, the 2.4L KA24DE truck four in the Frontier and the Xterra, and the 2.4L KA24DE again in the transverse Altima, and it is also half our 1.8L Sentra stock on the QG18DE. Letter C doubles as well: the 3.0L VQ30DE in the Maxima and the other half of the 1.8L Sentras. Give us the printed code if your listing carries one, and your own VIN either way.

The 1.8L Sentra is the clearest example of why the letter settles nothing in 2001. We hold four of them, all the same QG18DE, and they sit under two different letters: two at VIN C and two at VIN D, split by XE and GXE trim rather than by displacement or gearbox. A later year would tell you C means 1.8 litres. On 2001 stock it does not. The 2.0L SR20DE Sentra sits beside them at VIN B on its final Sentra year.

The 3.3L VG33E comes in two installations and they are not interchangeable. Longitudinal in the Frontier, the Xterra and the Pathfinder — two letters, E and A, one layout — and transverse in the Quest minivan, where the code is printed in the 8th VIN digit rather than the 4th. The oil pan, sump, brackets and intake routing differ between the two, so we hold them as separate family rows and label each by the donor vehicle's layout.

The truck line is the steady part of this year. A 2001 Frontier or Xterra is one of three things: 3.3L VG33E at VIN E, the same 3.3L supercharged at VIN M, or 2.4L KA24DE at VIN D. Those three run on unchanged through 2002, 2003 and 2004, so 2001 through 2004 truck units do interchange. 2005 moves to the 4.0L VQ40DE and the 2.5L QR25DE and shares none of them. The supercharged 3.3L is never offered as a substitute for the ordinary one in either direction.

Every engine here is used OEM from a low-mileage donor vehicle, compression-tested cylinder by cylinder with a leak-down evaluation, photographed from multiple angles for your approval before it leaves the warehouse, and shipped free with up to a 3-year warranty. We match the donor VIN to your VIN internally so the calibration, emissions package and gearbox pairing line up.

📱 Fastest way to match: text us your VIN, get options in minutes.Text Your VIN →

Your 2001 Nissan Engine Options: Compared

Most 2001 Nissan owners face four real choices when the engine fails:

← Swipe sideways to see all columns →
Option Cost Reliability Warranty Fitment Match
Used OEM (this collection) $$$ Best Value High — tested Included VIN-matched
New OEM (dealer) $$$$$ 2-4× more High Manufacturer Exact
Aftermarket / Reman $$$$ 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.

2001 Nissan Engine Buying Guide

5 things to verify before buying a used 2001 Nissan engine:

  1. Settle which Pathfinder V6 you have. 2001 is the changeover year in this body. The 3.3L VG33E reads VIN A and the 3.5L VQ35DE reads VIN D, and we hold both. They share no major parts, so the model year and the badge are not enough on their own.
  2. Read the code, not the letter. On 2001 Nissan stock the 4th VIN digit settles less than on most years. D covers the 3.5L VQ35DE, the 2.4L KA24DE and the 1.8L QG18DE; C covers the 3.0L VQ30DE and the 1.8L QG18DE. Give us the printed code as well if your listing carries one.
  3. Settle the installation, not only the engine. A 3.3L VG33E out of a Frontier, Xterra or Pathfinder is mounted longitudinally; the one out of a Quest is transverse and is coded in the 8th VIN digit. Same code, different pan, brackets and intake routing. Tell us the donor model so the installation matches.
  4. Know which way the camshafts are driven. On 2001 stock the line follows the engine family's design era rather than its cylinder count. The older VG 3.3L V6 runs its cams off a belt; the newer VQ, KA, SR and QG families run chains, single cam and twin cam alike. Budget a belt and water-pump service at installation on a 3.3L and plan a chain and guide inspection on the rest.
  5. Confirm the match with your own VIN before you order. Your VIN settles the engine code, drivetrain and build split in one step. Text it to +1-307-441-5554 and we will confirm in writing exactly which unit fits your vehicle before you pay.

Our ASE-certified technicians verify every one of these points against your VIN before any unit ships.

📞 Need help choosing the right 2001 Nissan engine? Talk to our team live.Call 1-877-313-8995

Frequently Asked Questions

How many 2001 Nissan engines do you have in stock right now?
Sixteen, and the page is generated from live active listings, so the family table and the model tiles always add up to what is actually on the shelf. Text the VIN to +1-307-441-5554 and we will confirm which of the sixteen fits your vehicle.
Which engine is in a 2001 Pathfinder?
Either one. 2001 is the year the 3.5L VQ35DE arrives in this body alongside the 3.3L VG33E it replaces, and we hold both — the 3.3L at VIN A, the 3.5L at VIN D in AT and MT. They are not interchangeable in either direction, so send the 4th digit or the VIN and we will settle it before anything is picked.
The 4th VIN digit on my 2001 Nissan is D. Which engine is that?
D is the widest letter of this model year. It covers the 3.5L VQ35DE in the Pathfinder, the 2.4L KA24DE in the Frontier, the Xterra and the Altima, and half our 1.8L QG18DE Sentra stock. One letter, three different parts. The printed code or your VIN settles it in one step.
Which engine is in a 2001 Sentra?
Either the 1.8L QG18DE or the 2.0L SR20DE. We hold four of the 1.8L, two at VIN C and two at VIN D in XE and GXE trim, and one 2.0L at VIN B. The letter follows neither the litres nor the gearbox in 2001, so the printed code or your VIN is the only thing that settles it.
What engine does a 2001 Frontier or Xterra take?
One of three: the 3.3L VG33E at VIN E, the same 3.3L supercharged at VIN M, or the 2.4L KA24DE at VIN D. We hold all three in live stock as separate family rows. Tell us the 4th digit and we will point you at the right one.
Can I fit a 2002, 2003 or 2004 Frontier engine in my 2001?
On these three engines, yes. 2001 through 2004 Frontier and Xterra run the same 3.3L VG33E, supercharged 3.3L and 2.4L KA24DE. 2005 is where it breaks: that year moves to the 4.0L VQ40DE and the 2.5L QR25DE and shares none of them. Send the VIN and we will confirm before anything is picked.
Is the 3.3L in a 2001 Quest the same as the one in a 2001 Frontier?
Same VG33E code, not the same unit to buy. The Quest's is mounted transversely in a front-drive minivan, carries its own pan and accessory drive, and is coded in the 8th VIN digit rather than the 4th; the Frontier's is longitudinal. We hold them as separate rows and never read one across to the other.
Do you have a 2001 Maxima or Altima engine with the 3.5L V6?
Not on this model year, and not because we are out of stock. The 2001 Maxima is 3.0L VQ30DE — its final 3.0L year — and the 2001 Altima is 2.4L KA24DE on the last year of that body. Both move to the 3.5L VQ35DE for 2002. Text +1-307-441-5554 and we will tell you what the nearest year actually holds rather than guessing.
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100K+
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Our 6-Step Inspection & Shipping Process

Every Nissan engine we ship has been through these six steps:

1. VIN-Matching
We match the donor VIN to your VIN to confirm the engine code (4th VIN digit), California vs federal emissions calibration, and drivetrain fit.
2. Tested & Verified
ASE-certified technicians compression-test every cylinder and run leak-down evaluation. Every 2001 unit is checked on the installation its donor used, the supercharged 3.3L is evaluated on its boost hardware as well as its compression, and the 3.3L V6 rows are given a belt and water-pump review before any unit is picked.
3. Noise & Smoke Verification
Units are run to verify normal mechanical sound and clean operation — catches internal wear static tests miss.
4. Visual Inspection
Every accessible component is inspected: turbos, manifolds, valve covers, housings, accessories, sensor harnesses.
5. Photograph & Catalog
Multi-angle photos sent to you BEFORE we ship for your approval.
6. Palletize & Ship
Strapped on a heavy-duty wooden pallet, shipped via freight at no charge.

Our Photos-Before-Shipment Guarantee

Before any engine leaves our warehouse, we 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 the warranty included with every unit. Browse all 16 2001 Nissan engines below.

✉ Email Us at info@autopowersource.com
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