MAXPEEDINGRODS 7EFMI9 Benz Engine Crankshaft Rods Bearings M274 2.0 4PCS Set

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 7EFMI9 ), ( Part Type: Bearing Engine Crankshaft Rod ), ( Application: For Mercedes-benz M274 2.0 Turbocharged Engine ), ( Bearing Shell Oe: 271 038 01 10, 271 038 05 11, 270 033 02 01, 270 033 02 02 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Connecting Rods Oe: 270 030 01 20, 274 030 04 00, 274 030 00 20, 274 030 02 20 ), ( Important Notice: Package Included, Professional Installation Required ), ( Manufacturer Warranty: 2 Years ), ( Material: Cast Iron, Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: 2740300101, 2740300201, 2740300401, 2740300701, 2740300801 )

Review MAXPEEDINGRODS 2.0 Engine Crankshaft And 4pcs Rods Bearings Set Mercedes benz

The **Maxpeeding Rods 7EFMI9 M274 2.0 Engine Crankshaft Rods and Bearings Set** is a precision-engineered, high-performance replacement component designed exclusively for the Mercedes-Benz M274 2.0L inline-4 engine, commonly found in models such as the CLA-Class, A-Class, and GLB. This meticulously crafted four-piece set includes **two fully machined connecting rods** and **two premium-grade rod bearings**, all engineered to restore or enhance the structural integrity and performance of your engine s lower end. Crafted from **high-strength forged steel**, these rods are heat-treated to achieve an optimal balance of durability and flexibility, ensuring they can withstand the extreme stresses of high RPMs, aggressive driving, and prolonged use without compromising on reliability. The accompanying **two-piece rod bearing set** features **thin-wall, high-load-capacity bearings** with a specialized coating to minimize friction, reduce wear, and improve oil retention, even under demanding conditions. This combination of superior materials and advanced manufacturing techniques makes this set an ideal upgrade for enthusiasts seeking to boost engine longevity, reduce internal friction, and enhance overall power delivery. Whether you're restoring an older M274 engine or optimizing a high-performance build, this rods and bearings set provides the robustness and precision needed to maintain peak performance while minimizing the risk of catastrophic failure. Perfect for both professional mechanics and dedicated DIYers, this component set ensures a seamless fit and reliable operation, allowing your engine to operate at its full potential for thousands of miles.

### **Pros and Cons of buying a Maxpeedingrods 7EFMI9 M274 2.0 Engine Crankshaft 4-Piece Rod Bearing Set for Mercedes-Benz**

1. **High-Quality Materials** Maxpeedingrods is known for using premium materials, including high-grade steel and advanced coatings, which enhance durability and load-bearing capacity. This reduces the risk of premature failure compared to lower-quality aftermarket or OEM replacements.

2. **Improved Performance** A 4-piece rod bearing set can offer better oil distribution and reduced friction compared to traditional 2-piece bearings. This can lead to improved engine efficiency, especially under high-stress conditions like aggressive driving or forced induction.

3. **Compatibility with M274 Engine** The 7EFMI9 part number is specifically designed for the Mercedes-Benz M274 2.0L engine (common in models like the C203, C204, and some GLK/GLB variants). This ensures a proper fit without modification, reducing installation risks.

4. **Extended Engine Life** If the original bearings were worn or damaged, replacing them with a high-quality set can prevent catastrophic failure (e.g., rod knock) and extend the engine s lifespan.

5. **Easier Installation** Some aftermarket bearing sets come with clear installation instructions and may include tools or guides, making the process more straightforward for DIYers.

6. **Cost-Effective Alternative to OEM** While not as cheap as generic bearings, Maxpeedingrods offers a balance between performance and price, often being more affordable than genuine Mercedes-Benz parts.

7. **Warranty and Support** Reputable brands like Maxpeedingrods typically provide warranties (e.g., 12 24 months) and customer support, offering peace of mind in case of defects.

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1. **Higher Upfront Cost** Compared to basic aftermarket or OEM bearings, a premium 4-piece set from Maxpeedingrods will be more expensive. This may be a deterrent for budget-conscious buyers.

2. **Requires Professional Installation (Recommended)** While possible for experienced DIYers, rod bearing replacement involves precision alignment and torque specifications. Improper installation can lead to premature wear or failure, voiding warranties.

3. **Limited Availability of Parts** Some specialized bearing sets may not be as widely stocked as OEM parts, requiring advance ordering or purchasing from authorized dealers.

4. **Potential Overkill for Stock Engines** If the engine is stock and not modified, a 4-piece bearing set may not provide noticeable performance gains beyond what OEM parts offer. The benefit is more pronounced in high-performance or turbocharged applications.

5. **Risk of Counterfeit Products** Purchasing from unverified sellers (e.g., third-party marketplaces) could result in fake or substandard bearings. Always buy from authorized dealers or reputable online retailers.

- Engine oil and filter change (recommended after installation).

- Torque wrench and specialized tools (if not already owned).

- Labor costs if using a shop (though this is a pro for those without mechanical skills).

7. **Mixed Reviews on Longevity** While Maxpeedingrods has a strong reputation, some users report that even high-quality bearings may not last as long as OEM parts in severe conditions (e.g., extreme towing, frequent high-RPM driving).

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The Maxpeedingrods 7EFMI9 4-piece rod bearing set is a **strong aftermarket alternative** to OEM parts, offering superior materials, better performance, and compatibility for the M274 engine. It is particularly justified for:

- Engines with existing wear or damage.

- High-performance or turbocharged applications.

- Owners seeking an upgrade beyond stock OEM bearings.

However, it is **not a necessary upgrade for stock engines** running under normal conditions, where OEM or high-quality generic bearings may suffice. The decision should weigh the **cost, installation difficulty, and expected benefits** against the engine s current state and usage.

- Your engine shows signs of rod bearing wear (e.g., knocking, oil consumption, or previous bearing failure).

- You are modifying the engine (e.g., forced induction, high compression) and want to future-proof it.

- You prioritize performance and longevity over cost savings.

- You have access to proper installation tools or a trusted mechanic.

- The engine is stock and running smoothly with no issues.

- You are on a tight budget and can use OEM or reputable generic bearings instead.

- You lack mechanical experience and cannot ensure proper installation.

- Purchase from an **authorized Maxpeedingrods dealer** or a trusted online retailer (e.g., Amazon, RockAuto, or specialty performance shops).

- Follow the **manufacturer s installation guidelines** strictly.

- Consider **professional installation** if unsure about the process.

- Pair the bearing set with a **high-quality oil and filter** (e.g., Mobil 1, Liqui Moly) for optimal performance.

For most Mercedes-Benz M274 owners, this bearing set is a **worthwhile investment** if there is a legitimate need for replacement, but it is not a mandatory upgrade for healthy engines.

Details:

274 030 02 01, Replacement OE#, 01 04 07 08 270 05. It is usually behind the cars windshield or on nameplate. Connecting Rod OE#. Guaranteed Fitment Always the correct part.

OE/Part number. Crankshaft Bearing OE#. Crankshaft OE#. Fit M274.920 / 2.0 Turbocharged 1991cc.

Connecting Rod Bearing OE#. 270 030 01 20, Replacement OE#, 274 04 02 20. Brand New, Built to strict quality control standards, High Metal and constructed for Antitrust Anti corrosion, durable stable performance long time use. For Mercedes-Benz C200 W205 2013 -2018, C250 2014 -2018, C260 2015 -2018, C300 C350e CLS260 C218 2015 - 2017, E200 W212 W213 E250 E260 E300 2016 -2018, GLC200 X253 GLC250 C253 GLC260 GLC300 GLK200 X204 2013 - 2015, GLK250 SLK200 / SLC200 R172 SLK300 SLC300 V250 W447 Infiniti Q50 2016 -2019, Q60 QX30 2017 -2019.

part #: 7efmi9 price

• $195.00

specifications cranshafengin:

• for makes: Mercedes
• brand: Maxpeedingrods
• mpn: 7efmi9
• part type: Bearing Engine Crankshaft Rod
• application: For Mercedes-benz M274 2.0 Turbocharged Engine
• bearing shell oe: 271 038 01 10, 271 038 05 11, 270 033 02 01, 270 033 02 02
• california prop 65 warning: California Prop 65 Warning
• connecting rods oe: 270 030 01 20, 274 030 04 00, 274 030 00 20, 274 030 02 20
• important notice: Package Included, Professional Installation Required
• manufacturer warranty: 2 Years
• material: Cast Iron, Steel
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part.
• oe/oem part number: 2740300101, 2740300201, 2740300401, 2740300701, 2740300801

general cranshafengin:

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

payments cranshafengin:

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

returns cranshafengin:

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

seller cranshafengin:

• # reviews: 7314
• city: Houston, Texas
• rating: 99.4%

offer cranshafengin:

• quantity: 5
• started: February 14, 2026
• sold: 0
• best offers: True
• availability: In Stock
• options: Ship-to-home

shipping cranshafengin:

• type: Fixed
• class: Standard
• service: Standard
• cost: $0.00
• transit: 5-10 Days

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