fits model: X4, F10, F11, F30, E90. make: Bmw.

( Brand: Epd ), ( Manufacturer Part Number: N47-CROD-12 ), ( Compatible Models 9: X1 ), ( X3: G01, F97, G08 ), ( 5 Gran Turismo: F07 ), ( Compatible Models 10: X3 Van ), ( X4: G02, F98 ), ( X5: F15, F85 ), ( Compatible Models 8: 5 Touring ), ( 5 Touring: G31 ), ( Compatible Models 5: 3 Gran Turismo ), ( 3 Touring: F31 ), ( Items Included: Connecting Rods X4 ), ( Compatible Models 6: 4 Convertible, F83 ), ( 4 Coupe: F32, F82 ), ( 4 Gran Coupe: F36 ), ( Compatible Models 3: 2 Convertible ), ( 2 Coupe: F22, F87 ), ( 3 Convertible: E93 ), ( 3 Coupe: E92 ), ( Compatible Models 2: 1 Convertible ), ( 1 Coupe: E82 ), ( Vintage Part: No ), ( Type: Connecting Rod ), ( Ipn: Om0036 ), ( Oe/oem Part Number: 11247807345, 11248473776, 7807345, 8473776 ), ( Manufacturer Warranty: 6 Months )
The **EPD N47-CROD-12 N47 Connecting Rod (x4) for BMW Mini F10/F11, 520d, and E90/E91 2.0L Diesel Engines** is a meticulously engineered, high-performance replacement part designed to restore peak efficiency and reliability to the robust yet demanding N47 inline-four diesel engine. Crafted from premium **forged 42CrMo4 steel**, this connecting rod set is precision-machined to BMW s exacting specifications, ensuring flawless fitment and optimal structural integrity under the high torque and stress conditions typical of the N47 s turbocharged diesel operation. Each rod in the set is dynamically balanced to eliminate vibration, reducing wear on the crankshaft and bearings while enhancing overall engine smoothness critical for maintaining the sporty yet refined driving experience that BMW Mini and 5-Series owners expect. The **CROD-12 designation** indicates a reinforced design with a **12mm rod bolt**, a common upgrade choice for enthusiasts seeking to bolster durability, particularly in high-mileage or modified applications where stock components may falter. Whether installed in the **F10/F11 Mini Cooper or Countryman** with its turbocharged 2.0L diesel, or in the **E90/E91 520d**, this rod set is engineered to withstand the relentless demands of daily driving, towing, or spirited acceleration without compromising on performance. The **four-rod set** ensures a complete, factory-matched replacement, eliminating the risk of mismatched components that could lead to premature failure. Backed by rigorous quality control and designed to meet or exceed OEM standards, these connecting rods are an ideal choice for mechanics and DIYers alike who demand precision, longevity, and the confidence of knowing their engine is running on parts built to last.
### **Pros and Cons of buying a EPD N47-CROD-12 (N47 Connecting Rod x4 for BMW N47 Diesel Engines)**
#### **Pros**
1. **Improved Engine Strength and Durability**
The N47 engine, particularly in the F10/F11/F30/E90 520d models, is known for its reliability but can suffer from premature rod bearing wear, especially in high-mileage or heavily modified engines. Upgrading to aftermarket connecting rods like the EPD N47-CROD-12 strengthens the rod assembly, reducing the risk of catastrophic failure. These rods are forged from high-quality materials, offering better fatigue resistance compared to stock components.
2. **Compatibility with High-Performance Modifications**
If you plan to modify your engine with a turbo upgrade, larger injectors, or aggressive tuning, stock connecting rods may not handle the increased stress. The EPD rods are designed to support higher torque and RPM ranges, making them suitable for forced induction builds. This is particularly useful for diesel engines that see increased load under boost.
3. **Reduced Risk of Rod Bearing Failure**
The N47 engine has a history of rod bearing wear, especially in older models or those with high mileage. Upgraded rods paired with high-quality bearings (such as those from EPD or other reputable brands) can significantly extend the life of the crankshaft and reduce the likelihood of a seized rod journal. This is a critical upgrade for engines approaching or exceeding 150,000 200,000 miles.
4. **Better Heat Dissipation**
Forged rods have improved heat dissipation properties compared to cast rods, which can be beneficial in high-stress applications. This helps maintain consistent oil film thickness and reduces the risk of scuffing or seizure, especially in diesel engines that run hotter than gasoline counterparts.
5. **Backed by Reputable Aftermarket Brands**
EPD (Engine Performance Dynamics) is a well-regarded manufacturer in the aftermarket performance parts industry. Their rods are designed to meet or exceed OEM specifications while offering upgrades in strength and reliability. The company provides warranties and technical support, which adds confidence in the purchase.
6. **Potential for Increased Power Output**
While the primary benefit is durability, stronger rods can also allow for more aggressive tuning without fear of failure. This is particularly useful if you plan to push the engine beyond stock limits, whether for daily driving or competition use.
7. **Ease of Installation**
The EPD N47-CROD-12 rods are designed to be a drop-in replacement for stock rods, meaning they can be installed without major engine disassembly. This makes the upgrade accessible for DIY enthusiasts or mechanics without specialized tools.
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#### **Cons**
1. **Cost**
Upgraded connecting rods are significantly more expensive than OEM parts. The EPD N47-CROD-12 rods (a set of four) will cost several hundred dollars, which is a substantial investment compared to the relatively low cost of stock rods. This expense may not be justified for low-mileage engines or those without modification plans.
2. **Potential Overkill for Stock Applications**
If your engine is in excellent condition with low mileage and no plans for forced induction or aggressive tuning, the stock rods may suffice. Upgrading to aftermarket rods in this case is unnecessary and adds unnecessary cost without tangible benefits.
3. **Installation Complexity**
While the rods are a drop-in replacement, their installation requires careful attention to detail. Improper installation such as incorrect oil clearance, misalignment, or failure to torque bolts to specification can lead to premature failure. This may require professional installation, adding to the overall cost.
4. **Limited Long-Term Data on Specific Models**
While EPD and other aftermarket brands have extensive testing and real-world data, the N47 engine is not as widely modified as some others (e.g., BMW S54 or S65). There may be fewer long-term case studies or community feedback specific to the N47-CROD-12 rods in high-mileage or heavily modified applications. Always cross-reference with forums like Turbochips, DieselPower, or BMW-specific groups.
5. **Compatibility with Other Upgrades**
If you plan to pair these rods with other performance parts (e.g., a different crankshaft, pistons, or bearings), you must ensure full compatibility. Mixing brands or components without proper engineering can lead to issues such as incorrect rod length, oil clearance, or balance problems. Consulting with a performance specialist is advisable.
6. **Warranty Considerations**
Some BMW dealerships or extended warranties may void coverage if aftermarket parts like upgraded rods are installed. Always check your warranty terms before proceeding with modifications.
7. **Time and Labor Intensive**
Replacing connecting rods requires a major engine teardown, including removal of the oil pan, crankshaft, and other components. This is a labor-intensive process that may require multiple days of work, especially for inexperienced mechanics. The cost of labor can add significantly to the overall expense.
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### **Conclusion**
The EPD N47-CROD-12 connecting rods are a worthwhile upgrade for BMW N47 diesel engines (F10/F11/F30/E90 520d) in specific scenarios:- **High-mileage engines** (150,000 miles) showing signs of rod bearing wear or excessive oil consumption.
- **Engines with forced induction modifications** (turbo upgrades, larger injectors, or aggressive tuning).
- **Engines intended for high-stress applications** (towing, heavy loads, or competition use).
- **Owners planning long-term reliability** and willing to invest in preventative maintenance.
However, for low-mileage engines in stock or lightly modified condition, the cost may not be justified. In such cases, regular maintenance (oil changes, bearing checks) and monitoring for symptoms of rod bearing wear (knocking, oil leaks, power loss) may be sufficient.
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### **Recommendation**
1. **Assess Your Engine s Condition**
Before purchasing, have a professional inspection of your N47 engine. Check for:- Rod bearing wear (measure clearance with a feeler gauge).
- Oil consumption or leaks (indicating potential bearing issues).
- Knocking or unusual noises under load.
If the engine is healthy with no signs of distress, the rods may not be necessary.
2. **Consider a Full Engine Rebuild**
If your engine is approaching failure or has significant wear, a full rebuild with upgraded rods, bearings, and other components (e.g., EPD crankshaft, pistons) may be more cost-effective than a partial upgrade. A rebuild ensures all critical parts are fresh and reduces the risk of future issues.
3. **Pair with Other Upgrades**
If you decide to upgrade the rods, consider complementary parts such as:- High-quality rod bearings (e.g., EPD or INA).
- A performance crankshaft (if stock is worn).
- Upgraded oil pump and oil cooler for better lubrication.
This creates a more robust engine rather than a piecemeal fix.
4. **Budget Accordingly**
The EPD rods are a significant investment. Factor in labor costs, potential additional upgrades, and the opportunity cost of downtime. If your budget is limited, prioritize other maintenance tasks (e.g., fuel system cleaning, turbo upgrades) before committing to rod replacements.
5. **Consult a Performance Specialist**
If you re unsure whether this upgrade is right for your engine, consult a BMW performance specialist or diesel tuning expert. They can provide tailored advice based on your engine s specific condition and intended use.
**Final Verdict:**The EPD N47-CROD-12 rods are a strong choice for N47 diesel engines in high-mileage, modified, or high-stress applications. For stock or lightly used engines, the upgrade is unnecessary and costly. Always weigh the benefits against your engine s needs and budget before proceeding.
N47 CONNECTING ROD X4 FITS BMW MINI F10 F11 520D F30 E90 2.0L DIESEL ENGINE. The part fails or becomes defective due to the vehicle being involved in a collision. Warranty Null and Void If. Failure is attributed to abuse, misuse, or alterations.
Connecting Rods - X4. Compatibility. N47 D20A, D20B, D20C, D20D. The vehicle is converted from private passenger use to commercial fleet use, or utilized for racing, other competitions, off-road recreational activities.
Compatible Engines Code. Item Included. Failure is resulted due to neglect in engine service as recommended by manufacturer.
Engine Size: 2.0 Diesel.