MERCEDES 110-038-01-72 Connecting Rod Nut Benz 79-85

( Manufacturer Part Number: 110-038-01-72 ), ( Part Description: Nut ), ( Type: Connecting Rod Nut ), ( Items Included: As Pictured ), ( Note: Includes One Single Piece ), ( Quantity: 1 Pcs ), ( Universal Fitment: No ), ( Vintage Part: Yes ), ( Compatibility: Mbz M110, 280sel 79-85 ), ( California Prop 65 Warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer And Reproductive Harm. )

Review MERCEDES benz Connecting Rod Nut Pc And 79-85 fits 280SE 280SEL

The **Mercedes-Benz 110-038-01-72 connecting rod nut** is a precision-engineered fastener designed exclusively for the high-performance inline-six engine architectures found in the iconic **W123 280 SE and 280 SEL models** produced between **1979 and 1985**. This critical component plays a pivotal role in maintaining the structural integrity of the engine s crankshaft assembly, ensuring optimal power transfer and longevity under the demanding conditions of daily driving or spirited acceleration. Crafted from **high-strength alloy steel**, the nut is heat-treated to achieve an exceptional tensile strength, allowing it to withstand the immense clamping forces exerted by the connecting rod bolts while resisting deformation, fatigue, and premature wear. Its **fine-threaded design** ensures a secure, vibration-dampening fit against the corresponding rod cap, preventing loosening under the dynamic loads of engine operation whether during cruising on the Autobahn or towing heavy loads.

The **110-038-01-72** is a **replacement part** that adheres to Mercedes-Benz s original specifications, guaranteeing compatibility with the **M116 2.8-liter inline-six engine**, which powers these legendary sedans. Unlike aftermarket alternatives that may compromise on material quality or thread precision, this genuine nut features a **smooth, corrosion-resistant finish** and is engineered to match the original part s torque specifications, typically around **60 70 Nm (44 52 lb-ft)** when installed in conjunction with the correct rod bolts. Its **hex socket drive** allows for precise installation using a deep-socket wrench, ensuring proper alignment and torque application without stripping or cross-threading. Beyond its functional reliability, this component reflects Mercedes-Benz s commitment to engineering excellence, embodying the same meticulous standards that define the brand s reputation for durability and performance.

For restoration enthusiasts, mechanics, or owners seeking to maintain their **W123 s** original integrity, the **110-038-01-72** is an indispensable part, often required during overhauls, rebuilds, or routine maintenance where connecting rod assemblies may have been removed or damaged. Its inclusion in a repair ensures that the engine s critical moving parts operate with the same precision as when the vehicle left the factory, reinforcing the reliability that has made the **280 SE and 280 SEL** timeless classics. Whether used in a full engine rebuild or as part of a targeted repair, this nut exemplifies Mercedes-Benz s legacy of engineering precision, making it a must-have for anyone committed to preserving the performance and heritage of these engineering masterpieces.

### Pros and Cons of buying a Mercedes-Benz 110-038-01-72 Connecting Rod Nut for 280SE/280SEL (1979 1985)

1. **OEM Quality and Fit** This is an original equipment part (OEM) designed specifically for the M116 engine used in the 280SE/280SEL (W123) from 1979 to 1985. It ensures a perfect fit without modifications, reducing the risk of improper installation or premature failure.

2. **Durability and Reliability** Mercedes-Benz connecting rod nuts are built to withstand high torque and stress, which is critical for maintaining engine integrity over time. A genuine part is less likely to strip or fail compared to aftermarket alternatives.

3. **Compatibility with Original Specifications** The part adheres to the manufacturer s torque specifications and material standards, ensuring the engine operates as intended. This is particularly important for high-performance or modified engines where stress on the rod bolts is increased.

4. **Long-Term Engine Protection** The connecting rod nuts play a crucial role in holding the piston and rod assembly in place. A faulty or improperly tightened nut can lead to catastrophic engine failure. A genuine part minimizes this risk.

5. **Ease of Installation** Since it is an OEM part, it should be straightforward to install, assuming the correct tools (like a torque wrench) and techniques are used. No additional machining or adjustments are typically required.

6. **Resale Value Preservation** Using OEM parts can help maintain the vehicle s value, especially if you plan to keep or sell the car in the future. Potential buyers often prefer cars with original or high-quality aftermarket parts.

7. **Warranty Coverage** If purchased from an authorized dealer or a reputable supplier, the part may come with a warranty, providing peace of mind against defects.

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1. **High Cost** OEM parts are significantly more expensive than aftermarket alternatives. The 110-038-01-72 nut can cost several times more than a generic replacement, which may be a barrier for budget-conscious buyers.

2. **Limited Availability** While not extremely rare, OEM parts for older Mercedes models can be harder to source than aftermarket options. You may need to order from specialty suppliers, which could involve longer lead times.

3. **Potential for Overkill** For a car that is not heavily modified or used for high-performance driving, an OEM part may be more than necessary. In some cases, a high-quality aftermarket nut (e.g., from ARP, EBC, or Mucoff) could offer comparable performance at a lower cost.

4. **Installation Complexity** While the part itself is simple, improper installation (e.g., overtightening, cross-threading, or incorrect torque) can still cause issues. This requires careful attention to the manufacturer s specifications and proper tools.

5. **Environmental and Ethical Considerations** Purchasing OEM parts contributes to new manufacturing, which may have environmental impacts. Some buyers prefer to source used or refurbished parts to reduce waste.

6. **Risk of Counterfeit Parts** When buying from non-authorized sources (e.g., eBay, untrusted online marketplaces), there is a risk of receiving counterfeit or substandard parts. Always verify the seller s reputation and authenticity.

7. **Maintenance Overhead** If the nut fails or needs replacement again in the future, the cost and effort of sourcing another OEM part may be a recurring concern, especially for older cars with high mileage.

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The Mercedes-Benz 110-038-01-72 connecting rod nut is an excellent choice if you prioritize **reliability, longevity, and compatibility** with your 280SE/280SEL s original specifications. It is the safest option for maintaining engine integrity, especially if the car is used for daily driving, long distances, or performance applications. However, the **high cost and limited availability** make it less ideal for casual enthusiasts or those on a tight budget.

For most owners of a 1979 1985 280SE/280SEL, the **pros outweigh the cons**, particularly if the car is a project or a cherished classic. The peace of mind from using a genuine part is invaluable, and the potential consequences of using a cheaper alternative (e.g., engine damage) far exceed the cost difference in the long run.

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- You want the absolute best fit and reliability for your engine.

- You are restoring or maintaining the car to original specifications.

- You plan to keep the vehicle long-term and value its integrity.

- You have the budget to invest in high-quality parts.

- You are purchasing from a **trusted Mercedes-Benz dealer or authorized supplier** to avoid counterfeits.

- You are on a tight budget and can find a reputable aftermarket nut (e.g., ARP, EBC, or Mucoff) that meets or exceeds OEM standards.

- The car is not used for high-performance driving and the original nut is not critically failing.

- You are comfortable researching and verifying the aftermarket part s compatibility and reviews.

- Always use a **torque wrench** and follow Mercedes-Benz s torque specifications (typically around **60 70 Nm** for these nuts, but confirm for your specific model year).

- Inspect the threads and nut condition before installation. Replace if the threads are damaged or stripped.

- If the nut is part of a larger overhaul (e.g., engine rebuild), consider replacing all connecting rod nuts and bolts for consistency.

- Store the part properly to prevent corrosion, especially if it s a spare for future use.

Details:

Everyone pays the price for this. This is not acceptable. All costs have to be included in the delivered price. Part Template Mercedes-Benz Connecting Rod Nut 1 PC - 110-038-01-72 For 280SE 280SEL 79-85.

This has no negative effect on the parts or their performance. Please verify with your local dealer before purchasing. Part numbers are from the actual packaging and may not have a make/ model reference. These parts are NOS which is New Part - Old Stock, They may have some minor blemishes and / or discoloration from long-term storage.

part #: 1100380172 prices

• $31.95-$44.10

specifications pistonrinro:

• for models: 280se, 280sel
• for makes: Mercedes
• mpn: 110-038-01-72
• part description: Nut
• type: Connecting Rod Nut
• items included: As Pictured
• note: Includes One Single Piece
• quantity: 1 Pcs
• universal fitment: No
• vintage part: Yes
• compatibility: Mbz M110, 280sel 79-85
• california prop 65 warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer And Reproductive Harm.

general pistonrinro:

• condition: New other see details
• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts

seller pistonrinro:

• city: Bakersfield, California
• rating: 99.9%
• # reviews: 2090

offer pistonrinro:

• options: Ship-to-home
• started: March 19, 2026
• sold: 0
• quantity: 8
• availability: In Stock

payments pistonrinro:

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

shipping pistonrinro:

• type: Calculated
• cost: $5.52
• carrier: USPS
• service: USPS Ground Advantage, USPS Priority Mail
• transit: 5-11 Days
• class: Standard, Expedited

returns pistonrinro:

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

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