1998 Used BMW Engines For Sale | Auto Power Source

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1998 Used BMW Engines For Sale

12 tested 1998 BMW engines: the 2.8L M52B28 under the 328i, Z3 2.8 and E39 528i, four 1.9L M44B19 fours split by California AIR pump, the M3 and Z3 3.2 M six, the 323i 2.5L M52B25 (not the M50B25 of our 1990-1995 pages), the 740i 4.4L M62B44 and the 750i 5.4L M73B54 V12. No 1998 title prints an engine code - text your VIN.

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1998 BMW Engine Families

Which engine sits under which 1998 BMW, and how many of each we hold today.

Engine family Fits (1998) In stock
M52B28 2.8L DOHC Inline-6 328i (E36), 528i (E39 - the E34 left after 1996) and Z3 2.8 (E36/7). NOT the 2.5L M52B25 of the 323i despite the shared M52 family name, and NOT the 2.5L M50B25 that fills our live 1990-1995 pages. 3
M44B19 1.9L DOHC Inline-4 - no secondary-air pump 318i (E36) and Z3 1.9 (E36/7) built without the secondary-air pump. 1.9L M44B19, NOT the 1.8L M42B18 of the 1991-1995 318i, and not interchangeable with the California AIR-pump M44B19 below without its own intake, exhaust and calibration. 2
M44B19 1.9L DOHC Inline-4 - California AIR pump 318i (E36, marked TLEV) and Z3 1.9 (E36/7) with the California secondary-air (AIR) pump. Same M44B19 code and same 1.9 litres as the rows above, different emissions hardware, and still not the 1.8L M42B18. 2
S52B32 / S50B32 3.2L M Inline-6 M3 (E36) and Z3 3.2 / M Roadster (E36/7). At this build point the US 3.2 M six is the S52B32 and the European M3 3.2 is the S50B32. We name both candidates rather than assert one and confirm which against your VIN. There is no M52B32. 2
M52B25 2.5L DOHC Inline-6 323i (E36), the 2.5 six's first year under this badge. NOT the 2.5L M50B25 of the 325i and 525i that fills our live 1990-1995 pages: the M52 is an aluminium block with iron liners and its own head, intake and DME, the M50 is iron-blocked. Neither direction swaps in. 1
M62B44 4.4L DOHC 32-valve V8 740i (E38). NOT the 4.0L M60B40 that fills our live 1993, 1994 and 1995 pages, nor the 3.0L M60B30. Different bore, block, heads, management and accessory drive; neither direction swaps in. 1
M73B54 5.4L SOHC V12 750i (E38, listed 750i - the 1998 US flagship was sold as the 750iL). NOT the 5.0L M70B50 V12 of our 1990-1992 pages: same twelve-cylinder layout, different displacement, heads and twin-ECU management. 1
Total 12

Other BMW Model Years

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

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199819971996199519941993199219911990

Why Buy a 1998 BMW Engine from Auto Power Source

Every 1998 BMW engine here is used OEM pulled from a low-mileage donor vehicle, cataloged, and held pending sale. Each unit passes our six-step inspection: VIN-matching, ASE compression-test, noise and smoke verification, full visual inspection, multi-angle photography and palletized freight. Not one of the twelve 1998 titles prints an engine code, so every code named on this page rests on BMW production records for that nameplate, body and build date, read together with the displacement the title does state. We route the final match to your own VIN.

The 323i returns for 1998 on the 2.5L M52B25, and this is the one real 2.5L trap on the BMW arc. Our live 1990-1995 pages are full of 2.5L M50B25 sixes from the 325i and 525i. Same 2.5 litres, different family: the M52 is an aluminium block with iron liners carrying its own head, intake and DME, where the M50 is iron-blocked. Neither direction swaps in.

The 2.8L M52B28 is the volume 1998 six, under the 328i, the Z3 2.8 and the 528i. Label a 1998 5 Series E39, never E34 - the E34 left after 1996. The 2.8 is also not the 2.5L M52B25 of the 323i, family name notwithstanding.

The 740i 4.4L is the M62B44. It is not the 4.0L M60B40 that fills our live 1993, 1994 and 1995 pages, and not the 3.0L M60B30 either. Different bore, block, heads, management and accessory drive: a 4.0 will not stand in for a 4.4, and a 4.4 will not stand in for a 4.0.

The 750i 5.4L is the M73B54 V12, not the 5.0L M70B50 V12 of our 1990-1992 pages. Same twelve-cylinder layout, different displacement, heads and twin-ECU management. Twelve cylinders is not a fitment match on its own.

The 318i and Z3 1.9 run the 1.9L M44B19. That is not the 1.8L M42B18 of the 1991-1995 318i. The M44 has a larger bore, its own head, a different intake and different management, so a 1.8 is not a short-stroke 1.9 you can bolt in.

Our four 1.9L units split by emissions hardware rather than by code: two were built without the secondary-air pump and two carry the California AIR pump, one of those marked TLEV. Same M44B19, same 1.9 litres, different intake, exhaust and management calibration. The two groups are not interchangeable without their own hardware.

The M3 and the Z3 3.2 are both listed at 3.2L. At this build point the US 3.2 M six is the S52B32 and the European M3 3.2 is the S50B32, and the Z3 M Roadster runs the S52B32. We name both candidates rather than assert one, and confirm which against your VIN. There is no M52B32: a 3.2L 1998 BMW six is an S engine. You pay a fraction of dealer-new for identical BMW engineering, ship free on a heavy-duty pallet anywhere in the continental US, and get up to a 3-year warranty plus 30-day money-back. Because no 1998 title carries a code, text your VIN to +1-307-441-5554 or call 1-877-313-8995 and we confirm the family, the emissions calibration and the body against your car before anything ships.

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

Your 1998 BMW Engine Options: Compared

Most 1998 BMW 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.

1998 BMW Engine Buying Guide

5 things to verify before buying a used 1998 BMW engine:

  1. Confirm the engine code from your VIN. No 1998 title prints one. The year spans M44B19 1.9L, M52B25 2.5L, M52B28 2.8L, M62B44 4.4L V8, M73B54 5.4L V12 and the 3.2L M six. Same litres can be a different family.
  2. Watch the 2.5L and the two V-engine traps. A 2.5L 1998 323i is an M52B25, not the M50B25 of our 1990-1995 pages. A 4.4L M62B44 is not a 4.0L M60B40, and a 5.4L M73B54 is not a 5.0L M70B50.
  3. Match the emissions hardware on a 1.9L. Two of our four M44B19 units were built without the secondary-air pump and two carry the California AIR pump. Same code, different intake, exhaust and calibration.
  4. Read the body code and the listed nameplate with care. A 1998 5 Series is an E39, never the departed E34. Our 5.4L car is listed 750i where the 1998 US E38 flagship was sold as the 750iL - we flag that rather than retitle it.
  5. Confirm the match with your own VIN before you order. Our ASE-certified technicians check family, displacement, emissions calibration and body code against your VIN before any unit is cleared to ship.

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

📞 Need help choosing the right 1998 BMW engine? Talk to our team live.Call 1-877-313-8995

Frequently Asked Questions

Which engine families do you have for 1998 BMW?
M52B28 2.8L six (3), M44B19 1.9L four without the AIR pump (2), M44B19 1.9L with the California AIR pump (2), the 3.2L M six (2), M52B25 2.5L six (1), M62B44 4.4L V8 (1) and M73B54 5.4L V12 (1).
No 1998 title lists an engine code. How do you know which engine it is?
Each code on this page rests on BMW production records for that nameplate, body and build date, read with the displacement the title does state. We assert nothing beyond that and route the final match to your own VIN.
Is the 323i 2.5L the same as a 325i or 525i 2.5L?
No. The 1998 323i is the M52B25; our 1990-1995 2.5L listings are the iron-block M50B25. Different block, head, intake and DME. Neither swaps in.
Is a 4.4L M62B44 interchangeable with a 4.0L M60B40?
No, in either direction. Different bore, block, heads, management and accessory drive - and a cross-year trap, because our live 1993-1995 pages are full of M60 V8s.
Is the 750i 5.4L the same as a 5.0L V12?
No. The 5.4L M73B54 differs from the 5.0L M70B50 in displacement, heads and twin-ECU management. Same cylinder count is not a fitment match.
Is the 1.9L M44B19 the same as the 1.8L M42B18?
No. The M44 has a larger bore, its own head, intake and management. The 1.8L M42B18 fits the 1991-1995 318i, not a 1998 one.
Why does the California AIR pump matter on a 1.9L?
It changes the intake, exhaust and management calibration. Two of our four M44B19 units have it and two do not, so the groups are not interchangeable without their own hardware.
Is the M3 3.2L an S52B32 or an S50B32?
The US 1998 M3 3.2 is the S52B32 and the European car is the S50B32. We name both candidates rather than assert one, and confirm which against your VIN. There is no M52B32.
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100K+
Engines+Transmissions In Stock
0%
fitment-related returns
All 50
states covered, free freight
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brands covered

Our 6-Step Inspection & Shipping Process

Every 1998 BMW engine we ship has been through these six steps:

1. VIN-Matching
We match the donor VIN to your VIN to confirm engine code, chassis code, LCI status, and drivetrain fit.
2. Tested & Verified
ASE-certified technicians compression-test every cylinder and run leak-down evaluation on engines. Transmissions are Shift-Tested through all gears.
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, VANOS solenoids, oil-feed plumbing, 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 12 1998 BMW engines below.

✉ Email Us at info@autopowersource.com
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