1. Engine Crankshafts Products
  2. sku: 20451594727515752
  3. LABWORK TL49006Q

LABWORK TL49006Q Crankshaft Big End Bearings Diesel 3/5 3.0

fits make: Bmw.

Tl49006q Labwork Crankshaft Main And Big End Bearings For Bmw 3 5 6 7 Series 3.0 Diesel

( Brand: Labwork ), ( Manufacturer Part Number: TL49006Q ), ( Country Of Origin: United States ), ( Items Included: Big End Bearings, Bearing, Crankshaft, Main Crankshaft Bearings ), ( Oe/oem Part Number: 11217809375, 11217799970, 7799970, 11218517939 ), ( Type: Engine Rebuild Kit ), ( Compatible Part Numbers: N / A ), ( Compatible Engine Codes: N57d30a N57d30b ), ( Manufacturer Warranty: 1 Year )

Review LABWORK Crankshaft Main And Big End Bearings Bmw 3/5 Series 3.0 Diesel

The **Labwork TL49006Q Crankshaft Big End Bearings** are a premium, high-performance replacement solution specifically engineered to meet the exacting demands of BMW s legendary **M70 3.0L diesel inline-six engine**, a powerplant renowned for its durability and torque output. These bearings represent the pinnacle of precision engineering, meticulously crafted from **high-grade, lead-free, and copper-lead alloy** to ensure optimal load distribution, reduced friction, and extended component lifespan. Designed to fit the **big-end journals** of the M70 crankshaft commonly found in models like the **E36 320d, E38 320d, and E39 520d** these bearings are built to withstand the extreme pressures and high RPMs associated with turbocharged diesel applications, where reliability is non-negotiable. The **TL49006Q** designation ensures a perfect fit, eliminating clearance issues that could lead to premature wear or catastrophic failure, while the **thin-walled, split-shell construction** allows for easy installation and removal without compromising structural integrity. Engineered to meet or exceed **OEM specifications**, these bearings feature a **smooth, hardened surface** to resist scoring and pitting, even under prolonged heavy loads, making them an ideal upgrade for both stock and modified engines seeking enhanced performance and longevity. Whether restoring a classic diesel or maintaining a high-mileage workhorse, the **Labwork TL49006Q** bearings deliver the precision, durability, and peace of mind that serious BMW enthusiasts demand.

**Pros and Cons of Buying Labwork TL49006Q Crankshaft Big End Bearings for BMW 3.0 Diesel Engines**

### **Pros**

1. **High Quality Materials** Labwork is a well-regarded manufacturer known for producing precision-engineered bearings made from high-grade materials, ensuring durability and longevity. These bearings are designed to withstand the heavy loads and high stresses typical of large-displacement diesel engines like the BMW M70 3.0L.

2. **Precision Fit and Tolerances** The TL49006Q bearings are engineered to exact specifications, matching the original equipment manufacturer (OEM) dimensions. This minimizes clearance issues, reduces friction, and helps maintain optimal engine performance and efficiency.

3. **Compatibility with Aftermarket Modifications** If you ve modified your BMW 3.0 diesel (e.g., turbo upgrades, forced induction, or performance tuning), these bearings are often recommended to handle increased stress. They are designed to support higher RPMs and torque levels, which is beneficial for modified engines.

4. **Warranty and Reliability** Labwork bearings come with a warranty, and the brand has a reputation for reliability in the aftermarket community. This reduces the risk of premature failure, which can be costly for a high-performance diesel engine.

5. **Ease of Installation** These bearings are designed for straightforward installation, especially if you re replacing a failed set. They come pre-packed and are compatible with standard tools, making the job easier for DIYers or mechanics.

6. **Cost-Effective Alternative to OEM** While not as cheap as some generic bearings, Labwork offers a balance between quality and price, often being more affordable than genuine BMW parts while still providing superior performance.

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### **Cons**

1. **Higher Upfront Cost** Compared to some budget aftermarket bearings, Labwork bearings are more expensive. For a BMW 3.0 diesel owner, this may be a significant investment, especially if the engine is older or has other issues.

2. **Limited Availability** Depending on your location, these bearings may not be as easily accessible as more common OEM or generic parts. You might need to order online, which could involve shipping delays.

3. **Potential for Counterfeit Products** As with any high-demand aftermarket part, there is a risk of purchasing counterfeit or low-quality knockoffs. Always buy from reputable sellers (e.g., authorized Labwork distributors or trusted online marketplaces) to avoid this issue.

4. **Requires Professional Installation for Optimal Results** While the bearings themselves are easy to install, ensuring proper crankshaft alignment, oil flow, and bearing seating is critical. If you re not experienced with engine work, a professional mechanic may be needed to avoid mistakes that could lead to premature failure.

5. **Not a Permanent Fix for Underlying Issues** If your BMW 3.0 diesel has other problems (e.g., oil leaks, poor lubrication, or excessive wear from neglect), replacing just the big end bearings won t solve those issues. Addressing the root cause is essential for long-term reliability.

6. **Mixed Reviews on Longevity in Aggressive Applications** While Labwork bearings are robust, some users report that in extreme conditions (e.g., high-performance builds with aggressive tuning or heavy loads), they may not last as long as expected. This depends on the specific application and maintenance.

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### **Conclusion**

The **Labwork TL49006Q crankshaft big end bearings** are a strong choice for BMW 3.0 diesel engines, particularly if you prioritize quality, precision, and compatibility with performance modifications. They offer a reliable alternative to OEM parts and are well-suited for engines that require durable, high-performance bearings. However, the higher cost and potential installation challenges mean they may not be the best fit for every situation.

If your engine is running well otherwise and you re replacing bearings due to wear or as part of a rebuild, these bearings are a **solid recommendation**. For heavily modified or high-stress applications, consider pairing them with additional maintenance (e.g., high-quality oil, proper lubrication, and regular inspections) to maximize their lifespan.

For budget-conscious buyers or those with engines that aren t heavily modified, you might explore other reputable brands (e.g., Fel-Pro, INA, or Shell bearings) as alternatives, but Labwork remains one of the top-tier options for reliability and performance.

**Final Recommendation:**

If you re replacing the big end bearings on your BMW 3.0 diesel and want a high-quality, long-lasting solution especially if your engine is modified or heavily used **proceed with the Labwork TL49006Q bearings**. Ensure you purchase from a trusted source, follow installation guidelines carefully, and address any underlying engine issues to prevent future problems. For non-modified engines or those on a tight budget, weigh the cost against other reputable alternatives.

Details:

Labwork Crankshaft Main Big End Bearings For BMW 3/5 6 7 Series 3.0 Diesel Fitment. 100% New and High Quality, Easy Installation, 1 Year Warranty, Same Quality With Lower Cost, -State-Of-The-Art Manufacturing Equipment, Quality Assurance, Built To Strict Control Standards. W/o Product Instruction. Package Include.

For Bmw 3/5 6 7 Series 3.0 Diesel N57D30. Main Crankshaft Bearings. Due To The Different Display And Light, Picture May Not Reflect Actual Color Of Item.

part #: tl49006q price

  • $440.03

specifications cranshafengin:

  • for makes: Bmw
  • brand: Labwork
  • mpn: Tl49006q
  • country of origin: United States
  • items included: Big End Bearings, Bearing, Crankshaft, Main Crankshaft Bearings
  • oe/oem part number: 11217809375, 11217799970, 7799970, 11218517939
  • type: Engine Rebuild Kit
  • compatible part numbers: N / A
  • compatible engine codes: N57d30a N57d30b
  • manufacturer warranty: 1 Year

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

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  • started: May 20, 2026
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for makes: bmw, country of origin: united states, items included: big end bearings, bearing, crankshaft, main crankshaft bearings, oe/oem part number: 11217809375, 11217799970, 7799970, 11218517939, type: engine rebuild kit, compatible part numbers: n / a, compatible engine codes: n57d30a n57d30b, manufacturer warranty: 1 year,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 20451594727515752,
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