27
verified 2004 bmw engines
2004 Used BMW Engines For Sale
27 verified 2004 BMW engines in stock — 3 Series (320i, 325i in M54 and SULEV M56 builds, 330i incl. Xi AWD), 5 Series (525i, 530i, 545i 4.4L V8), 645Ci, 7 Series (745i, 760i 6.0L V12), the S54-powered M3, plus Z4, X3, X5, and Mini Cooper (incl. supercharged Cooper S and John Cooper Works). VIN-matched to your vehicle, compression-tested by ASE-certified technicians, photographed before shipment, backed by up to a 3-year warranty plus 30-day money-back. Free freight nationwide.
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Compression-Tested & Verified
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Free Nationwide Shipping
Browse 2004 BMW Engines by Model
Pick your 2004 BMW model to see exact fitments in stock. Not sure which engine code fits? Text us your VIN and a specialist confirms the match.
2004 3 Series
320i (2.2L, Canada-market sedan), 325i 2.5L in M54 and SULEV M56 builds, and 330i 3.0L in 225 HP and 235 HP performance-package tune — RWD and Xi AWD.
2004 5 Series
525i 2.5L and 530i 3.0L inline-six, each with or without Dynamic Drive, plus the 545i 4.4L V8. Confirm the option package before ordering.
2004 6 Series
645Ci 4.4L V8 coupe and convertible. Same V8 family as the 545i, tested and warrantied.
2004 7 Series
745i 4.4L V8 and the flagship 760i 6.0L V12. Full-size sedan powerplants, compression-tested.
2004 M3
3.2L S54 inline-six, available with or without the SMG sequential manual gearbox.
2004 Z4
2.5L and 3.0L inline-six for the roadster. Both units tested and warrantied.
2004 X3
2.5L and 3.0L inline-six for BMW's compact SUV.
2004 X5
3.0L inline-six plus 4.4L and 4.8L V8. Confirm displacement by VIN before ordering.
2004 Mini Cooper
1.6L in base, supercharged Cooper S, and John Cooper Works tune — supercharged units are not interchangeable with base.
Why Buy a 2004 BMW Engine from Auto Power Source
Each 2004 BMW engine we stock comes out of a low-mileage donor vehicle, is cataloged by VIN, and waits in our climate-controlled warehouse until it sells. Every unit passes our six-step inspection — VIN-matching, ASE testing, noise & smoke verification, full visual inspection, multi-angle photography, and palletized shipping.
Before any 2004 BMW engine is cleared for sale, our ASE-certified technicians compression-test every cylinder and run a leak-down evaluation. You pay a fraction of dealer-new pricing for identical BMW engineering, ship free on a heavy-duty pallet anywhere in the continental U.S., and get up to a 3-year warranty plus 30-day money-back. Not sure which 2004 variant fits? Text your VIN and we will confirm.
📱 Fastest way to match: text us your VIN, get options in minutes.Text Your VIN →
Your 2004 BMW Engine Options: Compared
Most 2004 BMW 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 BMW engineering as new, fraction of the cost.
2004 BMW Engine Buying Guide
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Match the engine code, not just displacement. The 2004 BMW 325i ships as M54 or SULEV M56 — same 2.5L, different engine; the oil-filler-cap side of the rocker cover identifies them.
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Check RWD vs Xi (AWD). The 2004 325i and 330i come in both; mounts, oil pans, and accessories differ.
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Confirm the option package. Dynamic Drive on the 525i/530i and the 330i's 225 HP vs 235 HP performance package are distinct fitments.
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Watch supercharged and SMG variants. Mini Cooper base vs supercharged Cooper S / John Cooper Works, and M3 with vs without the SMG gearbox, are not interchangeable.
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Always run the donor VIN if available. We provide it on request for any engine in our inventory to verify mileage and history.
Our ASE-certified technicians verify every one of these points against your VIN before any engine ships.
Frequently Asked Questions
What is the warranty on a 2004 BMW engine?
Up to 3 years, depending on the specific unit. The exact warranty term is listed on each product page.
What does compression-tested mean?
ASE-certified technicians compression-test every cylinder and run a leak-down evaluation before the engine is cleared for sale.
How long until delivery?
Prep and ship time is 3-5 business days. Transit time is 2-3 business days via freight carrier after dispatch.
Can I see photos before I buy?
Yes. Multi-angle photos of the actual unit are sent before payment.
Do I need my VIN?
Strongly recommended. 2004 BMW engines vary by engine code, drivetrain (Xi AWD), and option package.
What if I do not approve the photos?
Every dollar back — no restocking fees, no return freight charges.
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 2004 BMW engine 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 a leak-down evaluation on each engine.
3. Noise & Smoke VerificationUnits are run to verify normal mechanical sound and clean operation — catches wear static 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.
★★★★★
Transaction was perfect
"Found me the right engine at a great price. Got it in 2 days and installed the car the next day. Runs absolutely beautiful."
— Kevin Graham, 2026-04-29
★★★★★
Repeat customer
"AutoPowerSource is a great company. I've used them several times for used motors. Low mileage when other companies gave up."
— Curtis Haines, 2025-12-23
★★★★★
Highly recommend Mike
"Mike reached out first thing in the morning regarding my inquiry for a used engine. Very informative and helpful."
— Beatrice, 2026-03-31
★★★★★
Great experience
"Daisy kept me in the loop every step. My original engine was damaged before shipping; she found a different one quickly."
— Bryan Perkins, 2026-03-25
Our Photos-Before-Shipment Guarantee
Before any 2004 BMW 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 up to a 3-year warranty.
✉ Email Us at info@autopowersource.com
