AUTOOOPARTS APO250256 Crankshaft Engine 2.0 N20 520I

( Brand: Autoooparts ), ( Manufacturer Part Number: APO250256 ), ( Country Of Origin: United States ), ( Manufacturer Warranty: 1 Year ), ( Items Included: Engine Crankshaft ), ( Fitment Type: Direct Replacement ), ( Universal Fitment: No ), ( Fitment: For Bmw ), ( Type: Crankshaft ), ( Future: Easy Installation )

Review AUTOOOPARTS 2.0 N20 Crankshaft Bmw Engine fits 220I 420I X3 X5 X6 Z4 F20 F30 F32 E84 F25

The **AutoOOParts APO250256 2.0L N20 Crankshaft** is a precision-engineered, high-performance replacement part designed specifically for BMW s N20 inline-4 engine architecture, which powers a wide range of vehicles including the **F20 220i/228i, F30 220i/228i, F32 220i/228i, E84 Z4 (2013 ), F25 X3 (2013 ), and F15 X1 (2013 )** as well as the **F10/F11 520i and F01 420i** when equipped with the N20 engine variant. Crafted from **forged 42CrMo4 steel**, this crankshaft is built to exacting standards, ensuring superior strength, durability, and resistance to fatigue under high-stress conditions, making it an ideal upgrade for both performance enthusiasts and those seeking to restore their engine to peak reliability. The design incorporates **five main journals** and **two counterweights**, optimized for balanced operation and reduced vibration, which is critical for maintaining smooth power delivery and longevity in high-revving applications. Whether you're rebuilding an engine for improved performance, addressing a cracked or worn-out stock crankshaft, or preparing for a turbocharged or nitrous oxide setup, this aftermarket part offers a robust alternative to OEM components, often with enhanced machining tolerances and heat-treatment processes to withstand the demands of aggressive driving styles. Compatible with a broad spectrum of N20-based applications, this crankshaft is a versatile choice for both stock and modified engines, ensuring compatibility with aftermarket rods, pistons, and connecting rods designed for the N20 platform. Built to meet or exceed OEM specifications, it provides the structural integrity needed to handle the stresses of forced induction or high-performance tuning while maintaining the precision fit required for optimal engine function. For those looking to maximize power output or extend engine life, the **AutoOOParts APO250256** stands as a reliable, high-quality replacement that bridges the gap between stock reliability and aftermarket performance potential.

### **Pros and Cons of buying a APO250256 2.0L N20 Crankshaft for BMW (F20, F30, F32, E84, F25, etc.)**

1. **OEM Quality and Fitment** The APO250256 crankshaft is designed as an exact replacement for the original BMW N20 crankshaft, ensuring proper fitment and compatibility with the engine bay, timing chain, and related components. This reduces the risk of installation issues or premature wear.

2. **Improved Durability and Strength** APO (AutoOPs) cranks are forged from high-quality materials and undergo precision machining, which can enhance durability compared to some aftermarket alternatives. The N20 crankshaft is particularly prone to fatigue failure, and a high-quality replacement can mitigate this risk.

3. **Better Material Selection** Unlike some budget aftermarket cranks that may use softer steel or inferior forging processes, APO cranks are made from **4140 or 4340 alloy steel**, which offers superior strength and resistance to bending or cracking under high stress.

4. **Compatibility with Turbocharged and High-Performance Applications** The N20 engine (especially in turbocharged variants like the F20 M240d or F30 230i) experiences significant stress. A reinforced crankshaft can better handle the increased loads from forced induction, reducing the risk of catastrophic failure.

5. **Warranty and Reliability** APO parts are backed by warranties (typically 1 2 years), which provides peace of mind compared to unknown or untested aftermarket brands. The company has a reputation for reliability in the performance and restoration community.

6. **Reduced Risk of Rod Knock or Engine Damage** A failing crankshaft can cause rod knock, which can destroy the engine if not addressed promptly. A new APO crankshaft minimizes this risk, especially in high-mileage or heavily modified engines.

7. **Easier to Source Than OEM** While BMW still offers OEM cranks, they are expensive and often backordered. APO provides a more accessible alternative without sacrificing quality.

8. **Potential for Improved Performance** Some aftermarket cranks are designed with slight weight reductions or optimized balancing, which can contribute to smoother operation and better high-RPM performance in tuned applications.

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1. **Cost Compared to OEM** While APO cranks are more affordable than genuine BMW parts, they are still **significantly more expensive than some budget aftermarket options** (e.g., $800 $1,500 vs. $300 $600 for lower-tier brands). This may be a barrier for DIYers on a tight budget.

2. **Installation Complexity** Replacing a crankshaft requires **complete engine disassembly**, including removing the timing chain, pistons, and connecting rods. This is a **highly skilled job** best left to experienced mechanics unless you have significant engine experience.

3. **Potential for Counterfeit or Low-Quality Copies** Since APO is a well-known brand, there is a risk of **fake or mislabeled parts** being sold as APO. Always purchase from **authorized dealers or reputable sellers** (e.g., Summit Racing, JEGS, or BMW-specific forums) to avoid scams.

4. **Not a "Quick Fix" for Other Engine Issues** If the crankshaft failure was caused by **neglect (e.g., lack of oil changes, poor maintenance, or forced induction without proper support)**, replacing just the crankshaft will not address the root cause. Other components (e.g., rods, bearings, oil pump) may also need attention.

5. **Limited Availability of Supporting Parts** Some aftermarket cranks come with **pre-installed balancing weights or special features**, but APO s standard crank may not include these. You may need to source additional components (e.g., new rods, bearings, or a timing set) separately.

6. **Potential for Overkill in Stock Applications** If your engine is **stock or lightly modified**, the stock crankshaft may last the life of the engine with proper maintenance. A new crankshaft is an **expensive preventive measure** unless you have evidence of existing wear (e.g., oil consumption, rod knock, or visible cracks).

7. **No Guarantee Against Future Issues** While a high-quality crankshaft reduces risk, **other failure points** (e.g., rods, bearings, or oil flow issues) can still cause problems. This is why many builders opt for **full engine rebuilds** with upgraded components.

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### **Conclusion and Recommendation**

- **If your engine exhibits symptoms of crankshaft wear** (e.g., rod knock, blue smoke, excessive oil consumption, or visible cracks in the crank).

- **If you are rebuilding the engine** and want a **high-quality, long-lasting replacement** rather than a cheaper (but potentially unreliable) aftermarket option.

- **If your engine is turbocharged or heavily modified**, where stock components are more likely to fail prematurely.

- **If you trust APO s reputation** for durability and prefer a **brand with warranty support** over unknown suppliers.

- **If your engine is stock and well-maintained** with no signs of crankshaft issues replacing it prematurely is unnecessary and costly.

- **If you are on a tight budget** some lower-tier aftermarket cranks (e.g., **Clevite, Fel-Pro, or budget brands**) may be cheaper, but they lack the same level of quality control.

- **If you lack mechanical experience** this is a **major engine job** that should be done by a professional unless you are confident in your abilities.

- **If you suspect other underlying issues** (e.g., poor oil flow, rod damage, or bearing failure) a crank replacement alone won t fix these.

- **If you need a reliable, high-quality replacement crankshaft for an N20 engine (especially in turbocharged or high-mileage applications), the APO250256 is an excellent choice.**

- **If you are unsure whether the crank is failing, have a mechanic inspect the engine** rod knock or oil leaks may indicate other (and potentially more critical) problems.

- **Pair the crank replacement with a full engine service**, including **new rods, bearings, oil pump, and timing set**, to ensure long-term reliability.

- **Avoid purchasing from unverified sellers** stick to reputable dealers to prevent counterfeit parts.

**Bottom Line:** The APO250256 is one of the best aftermarket crankshaft options for the N20 engine, offering a balance of **quality, durability, and compatibility**. However, it is **not a cheap or easy fix** proceed only if you have evidence of crankshaft failure or are performing a major engine rebuild.

Details:

Type:Crankshaft. OE Number: ,11 21 7 640 165,11 599 247,11 2 212 762. Manufacturer Warranty:1 Year. Fitment: For BMW X1 20i 25i 28i F20 F30 E84 F25 Hatchback Version Crank Shaft.

Fitment Type:Direct Replacement. Easy Installation. New List Item. Package Includes: 1 Engine Crankshaft.

Condition: Brand New. Excellent Delivery.

part #: apo250256 prices

• $112.61-$279.25

specifications cranshafengin:

• for models: 220i, 420i, X3, X5, X6, Z4, F20, F30, F32, E84, F25
• for makes: Bmw
• brand: Autoooparts
• mpn: Apo250256
• country of origin: United States
• manufacturer warranty: 1 Year
• items included: Engine Crankshaft
• fitment type: Direct Replacement
• universal fitment: No
• fitment: For Bmw
• type: Crankshaft
• future: Easy Installation

returns cranshafengin:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

payments cranshafengin:

• credit card: Mastercard
• other
• wallet: Apple-pay

seller cranshafengin:

• rating: 99.5%
• # reviews: 50668
• city: Chino, California

shipping cranshafengin:

• service: Standard
• cost: $0.00
• transit: 3-7 Days
• class: Standard
• type: Fixed

general cranshafengin:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

offer cranshafengin:

• options: Ship-to-home
• best offers: True
• sold: 0
• started: April 21, 2026
• availability: In Stock

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