M52B28 Engine for Sale: The Ultimate Guide to Buying and Owning the BMW Inline-Six Legend

Introduction to the M52B28 Engine
M52B28 Engine Specifications
Performance and Tuning Potential
Common Problems and Reliability
What to Look for When Buying a Used M52B28 Engine
Best Places to Find an M52B28 Engine for Sale
M52B28 Engine Swap Guide
Cost of Ownership and Maintenance
Comparison: M52B28 vs. Other BMW Engines
Conclusion
Frequently Asked Questions (FAQs)

1. Introduction to the M52B28 Engine

The M52B28 engine, often referred to simply as the M52 2.8L, is part of the legendary BMW M52 inline-six engine family, produced from 1995 to 2000. This naturally aspirated engine was a performance staple in models like the E36 328i, E39 528i, and Z3 2.8. Known for its smooth delivery, reliability, and tuning potential, it remains a popular choice among BMW enthusiasts looking for a cost-effective performance engine.

Whether you’re performing an engine swap, rebuilding a classic Bimmer, or seeking a solid platform for forced induction, the M52B28 engine for sale is worth considering.

2. M52B28 Engine Specifications

Here is a detailed breakdown of the BMW M52B28 engine specs:

Feature	Specification
Engine Code	M52B28
Production Years	1995–2000
Displacement	2.8 liters (2793 cc)
Configuration	Inline 6-cylinder
Bore x Stroke	84.0 mm × 84.0 mm
Compression Ratio	10.2:1 (non-TU), 10.0:1 (TU version)
Fuel System	Bosch Motronic M5.2 / M5.2.1 / MS41
Valvetrain	DOHC, 4 valves per cylinder
VANOS	Single VANOS (Dual VANOS on TU)
Max Horsepower	~193 hp (142 kW) at 5,300 rpm
Max Torque	~280 Nm (207 lb-ft) at 3,950 rpm
Redline	6,500 rpm
Engine Block	Aluminum with iron liners
Cylinder Head	Aluminum alloy
Engine Weight	~147 kg (324 lbs)

M52B28TU Note:

The “TU” (Technical Update) version, introduced in 1998, featured dual VANOS, revised intake manifolds, and MS42 engine management, improving low-end torque and fuel efficiency.

3. Performance and Tuning Potential

Stock Performance

The stock M52B28 already delivers respectable power and smooth torque delivery. In a standard BMW E36, 0–60 mph can be achieved in around 6.5 seconds.

Popular Performance Upgrades

M50 Intake Manifold Swap – Gains in high-RPM horsepower (~15–20 hp).
ECU Remap – Tunes like TRM or Active Autowerke can optimize fuel and timing.
Cold Air Intake + Exhaust – Improved throttle response and sound.
Turbo Kits – The M52B28’s iron-lined block is known to withstand up to 400+ hp with proper tuning.
Forged Internals (for high boost builds) – Required for over 450 hp.

This engine is a popular platform in drift builds, track cars, and street sleepers.

4. Common Problems and Reliability

The M52B28 is relatively reliable but, being over two decades old, it has some known issues:

1. Cooling System Failure

Water pump, thermostat, and radiator are weak points.
Regular replacement is recommended every 60,000–80,000 miles.

2. VANOS Rattle

Caused by worn VANOS seals; can be fixed with a rebuild kit.

3. Oil Leaks

Common leak points: valve cover gasket, oil filter housing, and oil pan gasket.

4. DISA Valve Failure (on TU models)

Leads to rough idle or poor performance.

5. Plastic Cooling Components

Expansion tanks and hose connectors can crack over time.

Maintenance Tips

Use high-quality synthetic oil (5W-30 or 5W-40).
Replace cooling components proactively.
Regularly inspect and clean the ICV (Idle Control Valve) and MAF.

5. What to Look for When Buying a Used M52B28 Engine

Checklist for Buyers

Compression Test: Look for 180–210 psi across all cylinders.
Check for Oil Leaks: Look underneath and near the valve cover.
Inspect Coolant Color: Milky coolant may indicate a head gasket issue.
Listen for Knocks: Rod knock or VANOS rattle should be red flags.
Check Engine Code: Ensure it’s a real M52B28, not a B25 or B20.

Red Flags

Unexplained coolant loss
Smoking from the tailpipe (blue or white smoke)
Rust or corrosion around engine mounts

6. Best Places to Find an M52B28 Engine for Sale

1. eBay Motors

Offers used and remanufactured engines.
Check seller reviews and warranties.

2. LKQ Online / Salvage Yards

Engines from totaled vehicles.
Often cheaper, but comes with risk.

3. Facebook Marketplace / Craigslist

Good deals, but always inspect before purchase.

4. Enthusiast Forums

BMW forums like Bimmerforums, E46Fanatics, and r/BMW.

5. Engine Importers / Rebuilders

Look for suppliers offering dyno-tested or warrantied engines.

Sample Listings

Source	Condition	Price Range
eBay Motors	Used	$1,000–$2,200
Junkyards	Used	$700–$1,500
Engine Builders	Rebuilt	$2,500–$3,500
Facebook Groups	Used	$800–$1,600

7. M52B28 Engine Swap Guide

Popular Swap Targets

E30 3 Series – Lightweight chassis + powerful inline-six = perfection.
E34 5 Series – A direct bolt-in upgrade for base trims.
E36 318i/323i – Massive performance jump with minimal fabrication.

What You’ll Need for a Swap

Engine + ECU + wiring harness
Transmission (Getrag 250 or ZF 5-speed)
Driveshaft (may require shortening)
Engine mounts
Cooling system components
Custom exhaust

Swapping an M52B28 is common due to its compatibility across many BMW chassis. Kits and guides are available for most popular platforms.

8. Cost of Ownership and Maintenance

Maintenance Item	Cost (USD)	Frequency
Oil Change	$70–$100	Every 5,000–7,000 mi
VANOS Seal Kit	$80–$120	Once every 100,000 mi
Water Pump + Thermostat	$200–$400	Every 60,000 mi
Valve Cover Gasket	$30–$60	As needed
Coolant Flush	$50–$80	Every 2 years
Timing Chain	Long-life	Rarely needed

The M52B28 is budget-friendly compared to modern engines, with most parts being readily available and affordable.

9. Comparison: M52B28 vs. Other BMW Engines

Engine	Displacement	Horsepower	Notes
M50B25	2.5L	189 hp	Stronger intake manifold
M52B28	2.8L	193 hp	More torque, smoother idle
M54B30	3.0L	228 hp	More power, but more electronics
S52B32	3.2L	240 hp	US-spec M3 engine
N52B30	3.0L	255 hp	More efficient, but less tunable

While newer engines like the M54 or N52 have more horsepower, the M52B28 is simpler, cheaper to maintain, and perfect for DIY mechanics.

10. Conclusion

The BMW M52B28 engine remains one of the best choices for anyone seeking a robust, affordable, and tunable inline-six. Whether you’re looking for a reliable replacement, planning an ambitious swap, or gearing up for a drift project, this engine delivers performance and value.

With engines widely available from reputable sellers and a massive aftermarket community, now is a great time to find an M52B28 engine for sale.

11. Frequently Asked Questions (FAQs)

Q1: What BMW models came with the M52B28 engine?

A: The M52B28 was found in:

E36 328i / 328is (1995–1999)
E39 528i (1996–2000)
E38 728i (European market)
Z3 2.8 (1996–2000)

Q2: How much horsepower does an M52B28 have?

A: Stock output is around 193 horsepower and 207 lb-ft of torque. The TU (Technical Update) model had similar horsepower with improved torque delivery.

Q3: Is the M52B28 a good engine for turbocharging?

A: Yes! Many enthusiasts run turbocharged M52B28 setups making 300–450 hp with forged pistons, injectors, and ECU tuning.

Q4: What’s the difference between M52B28 and M52B28TU?

A: The TU (Technical Update) version features:

Dual VANOS (better low-end torque)
Revised intake manifold
MS42 ECU (more advanced engine management)

Q5: Can I install an M52B28 in an E30?

A: Yes, it’s a popular swap, though it requires:

Custom mounts
Driveshaft mods
Wiring adaptation
E36 transmission and engine harness

Q6: How long does an M52B28 engine last?

A: With proper maintenance, the engine can last 250,000+ miles. Common issues like cooling system and oil leaks need to be addressed for longevity.

Q7: What’s the average price for an M52B28 engine?

A: Prices range from $700 to $3,500, depending on condition (used vs. rebuilt), included accessories, and seller reputation.

Q8: What oil should I use in an M52B28?

A: Use 5W-30 or 5W-40 full synthetic oil, preferably with BMW LL-01 certification for optimal performance.

Q9: Is the M52B28 better than the M50B25?

A: The M52B28 has more torque and smoother operation, while the M50B25 has a more aggressive intake manifold and iron block (better for high boost).

Q10: Does the M52B28 require special tools for maintenance?

A: Not generally, though VANOS repairs and timing chain jobs may need BMW-specific tools. Most routine maintenance can be done with standard tools.