BMW 2247054 Cylinder Head 251666712486 525TDS

( Tuning Styling-teil: Nein ), ( Produktart: Zylinderkopf ), ( G Tesiegel Kennzeichnungen: Atm Tornau Motoren Gmbh Co. Kg ), ( Artikelnummer: 10013063 ), ( Gewicht: 21 Kg ), ( Im Lieferumfang Enthalten: Der Artikel Wird Verkauft, Wie Abgebildet. ), ( Hersteller: Amc ), ( Type: Cylinder Head ), ( UPC: 251666712486 ), ( Oe/oem Part Number: 2247054 ), ( Vergleichsnummer: 908072, 908076, 11122245275, 5607011, Amc, Opel ), ( Oe/oem Referenznummer N : 908072, 908076, 11122245275, 5607011, Amc, Opel, E36, E39, E34, 585td, 525tds, 325td, 325tds, Omega, M51d25, U25dt, U25dt, U25td, X25dt, X25td, 725tds, 6 Zylinder, Zylinderkopf, Cylinder Head )

Review BMW Cylinder Head Remanufactured fits E34 M51

The **BMW 251666712486 E34 525tds M51 Cylinder Head (Part Number 2247054)** is a meticulously engineered component designed specifically for the legendary **BMW M51 inline-six diesel engine**, which powered the **E34 525tds** from its introduction in 1991 through the early 1990s. This cylinder head is a critical part of the engine s combustion system, housing the intake and exhaust valves, spark plugs (in this diesel configuration, glow plugs), and the combustion chambers that deliver the power and torque synonymous with BMW s diesel offerings. Crafted from high-grade cast iron, the head is built to withstand the intense pressures and temperatures generated by the M51 s turbocharged diesel operation, ensuring durability and reliability over extended periods of use.

The **2247054 cylinder head** features a classic **M51 design**, characterized by its **six-cylinder, overhead valve (OHV) layout**, with a single camshaft driving the valves via pushrods and rocker arms a configuration that, while less modern than later overhead cam (OHC) designs, remains highly respected for its robustness and simplicity. The head includes **six intake ports and six exhaust ports**, each precisely machined to optimize airflow and combustion efficiency, contributing to the engine s smooth and responsive performance. The **glow plug bores** are strategically positioned to ensure quick and reliable cold starts, a crucial feature for diesel engines in colder climates.

One of the standout attributes of this cylinder head is its **compatibility with the E34 525tds s fuel injection system**, which includes the **Bosch VE or later electronic fuel injection (EFI) setup**, depending on the model year. The head is designed to integrate seamlessly with the **M51 s turbocharger**, allowing for efficient scavenging of exhaust gases and improved scavenging of intake air, which enhances both power delivery and fuel economy. Additionally, the **valve seats and guides** are precision-machined to minimize wear and prevent leaks, ensuring that the engine maintains optimal compression and power output over time.

For restoration or replacement purposes, this cylinder head is an excellent choice for enthusiasts seeking to revive or upgrade their **E34 525tds**, as it is a **direct-fit OEM replacement** that maintains the original engine s performance characteristics. Whether used in a classic restoration project or as a spare for a well-loved diesel BMW, the **2247054 cylinder head** exemplifies BMW s engineering precision, combining durability with the distinctive sound and torque of the M51 diesel. Proper installation, including the use of high-quality gaskets and torque specifications, is essential to ensure a leak-free and reliable operation, allowing the engine to perform at its best for years to come.

### **Pros and Cons of Buying a BMW E34 525tds (M51 Engine) Cylinder Head (Part Number: 2247054)**

1. **Reliability and Performance** The M51 engine is a robust inline-6 diesel unit known for its durability, especially in the E34 525tds. With proper maintenance, it can last well beyond 200,000 miles. The cylinder head (2247054) is a critical component that, when in good condition, ensures proper combustion, cooling, and power delivery.

2. **Aftermarket Support** The E34 platform has a strong aftermarket presence, meaning parts like the cylinder head are relatively accessible. Tuning options (such as Bosch EDC16 or Motronic ME7.9 ECUs) can improve performance if the engine is otherwise sound.

3. **Classic BMW Appeal** The E34 525tds is a sought-after classic, especially in diesel form, due to its rarity and strong following. A well-maintained example with a restored or genuine cylinder head can be a desirable project or daily driver for enthusiasts.

4. **Potential for Restoration** If the cylinder head is in need of repair or replacement, sourcing a used or reconditioned one (like the 2247054) can be cost-effective compared to buying new. Many E34 parts are available through specialty shops or online marketplaces.

5. **Fuel Efficiency** The 525tds was designed for efficiency, offering better MPG than its gasoline counterparts. If properly maintained, it remains a practical choice for long-distance driving.

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1. **Aging and Wear** The M51 engine, while durable, is prone to common diesel issues such as **turbocharger failure, injector leaks, and fuel system wear**. The cylinder head (2247054) may show signs of **warping, cracked valves, or worn valve seats**, especially if the engine has high mileage or poor maintenance history. A thorough inspection is essential.

2. **Cost of Repairs** Even if the cylinder head itself is affordable, labor costs for removal, inspection, and reassembly can be high. Specialized knowledge of BMW diesel engines may be required, adding to expenses.

3. **Emissions and Modern Compliance** The E34 525tds predates modern emissions standards. If you plan to drive it frequently, you may face challenges with **smog checks, insurance, or road legality** in some regions. Retrofitting emissions equipment (e.g., EGR coolers, DPF) can be costly and may not be worth it for a classic.

4. **Fuel Availability** Diesel fuel quality has improved, but older vehicles may still struggle with **contaminants or fuel system compatibility**. Some modern diesel fuels contain additives that can clog or damage older injectors and pumps.

5. **Market Value and Depreciation** While the E34 525tds holds value among enthusiasts, it is not a practical daily driver for most due to **fuel costs, maintenance needs, and limited modern convenience features**. The resale value may not justify the investment for casual buyers.

6. **Potential for Hidden Issues** The cylinder head (2247054) may have **internal damage (e.g., cracked combustion chambers, worn lifters, or failing valve springs)** that isn t immediately visible. A **compression test, leak-down test, and valve inspection** are critical before purchasing.

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Buying a BMW E34 525tds with a cylinder head (2247054) can be a rewarding project for an enthusiast who is prepared for the challenges of maintaining a classic diesel engine. The M51 is capable of long-term reliability if properly cared for, but it requires **knowledge, budgeting for repairs, and patience**. If your goal is a **restoration or a show car**, the investment may be justified. However, if you seek a **practical daily driver**, the costs and hassles may outweigh the benefits.

- **If you are an experienced mechanic or have access to one**, and you re buying the car for **restoration or enthusiast use**, proceed with caution. **Inspect the cylinder head thoroughly** (look for cracks, warping, or signs of overheating) and **test the engine s compression and valve operation**. Consider a **used but well-documented cylinder head** from a trusted source to avoid costly surprises.

- **If you are a casual buyer or not prepared for diesel maintenance**, this may not be the best purchase. Instead, consider a **gasoline E34 (e.g., 528i or 535i)** or a more modern BMW with lower ownership costs.

- **Budget for the unexpected** diesel engines, especially older ones, often require **unplanned repairs** (turbo, injectors, fuel system). Have **emergency funds** set aside for at least **$1,000 $3,000** in additional costs beyond the cylinder head replacement.

- **Prioritize fuel system health** if the injectors, fuel pump, or turbo are failing, the cylinder head repair will be temporary. A **full engine inspection** is essential before committing.

**Final Verdict:** Only purchase this E34 525tds with a cylinder head (2247054) if you are **prepared for the work, have the skills or resources to maintain it, and view it as a passion project rather than a practical vehicle**. For most buyers, the rewards may not justify the risks.

Details:

Guides replaced, new valves, comes assembled ready to be installed. BMW E34 525TDS M51 Cylinder Head 2247054 Remanufactured.

part #: 251666712486 prices

• $130.77-$1600.00

specifications cylinderheapar:

• for models: E34, M51
• for makes: Bmw
• tuning styling-teil: Nein
• produktart: Zylinderkopf
• g tesiegel kennzeichnungen: Atm Tornau Motoren Gmbh Co. Kg
• artikelnummer: 10013063
• gewicht: 21 Kg
• im lieferumfang enthalten: Der Artikel Wird Verkauft, Wie Abgebildet.
• hersteller: Amc
• type: Cylinder Head
• upc: 251666712486
• oe/oem part number: 2247054
• vergleichsnummer: 908072, 908076, 11122245275, 5607011, Amc, Opel
• oe/oem referenznummer n : 908072, 908076, 11122245275, 5607011, Amc, Opel, E36, E39, E34, 585td, 525tds, 325td, 325tds, Omega, M51d25, U25dt, U25dt, U25td, X25dt, X25td, 725tds, 6 Zylinder, Zylinderkopf, Cylinder Head

general cylinderheapar:

• condition: Remanufactured
• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads

returns cylinderheapar:

• policy: No Returns

payments cylinderheapar:

• wallet: Google-pay
• credit card: Discover
• other
• money order

offer cylinderheapar:

• best offers: True
• sold: 0
• quantity: 1
• started: April 14, 2026
• availability: In Stock
• options: Ship-to-home

shipping cylinderheapar:

• transit: 4-10 Days
• cost: $0.00
• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• class: Standard

seller cylinderheapar:

• city: Federal Way, Washington
• rating: 100.0%
• # reviews: 3

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