1. Engine Crankshafts Products
  2. sku: 18708664338380891
  3. MERCEDES 1100322704

MERCEDES 1100322704 Harmonic Balancer Crank Pulley Benz

fits model: R107, 560sl. make: Mercedes. year: 1986–1989.

1100322704 Mercedes-benz R107 560sl Harmonic Balancer And Crank Pulley 86-89

( Manufacturer Part Number: 1100322704 ), ( Part Type: Balancer Crank ), ( Material: Steel ), ( Vintage Part: Yes ), ( Country Of Origin: Germany ), ( Performance Part: No )

Review MERCEDES benz Harmonic Balancer And Crank Pulley fits R107 560SL 1986–1989

The **Mercedes-Benz 1100322704 R107 560SL Harmonic Balancer and Crank Pulley (1986 1989)** is a precision-engineered component designed exclusively for the iconic **3.5-liter M117 V8 engine** found in the legendary **560SL roadster**, a model celebrated for its blend of luxury, performance, and timeless elegance. This high-performance assembly serves as the critical interface between the engine s crankshaft and the accessory drive system, ensuring smooth operation while absorbing vibrations generated by the powerful V8 s high-revving nature. Crafted from durable cast iron with a meticulously balanced core, the harmonic balancer is engineered to dampen torsional vibrations, preventing excessive stress on the drivetrain and enhancing both drivability and longevity. The crank pulley, machined from high-grade steel, features a precisely contoured surface to accommodate the serpentine belt system, minimizing wear and ensuring optimal tension and alignment. This component is not merely a functional part but a testament to Mercedes-Benz s engineering precision, designed to maintain the integrity of the engine s performance characteristics while delivering the refined, effortless power delivery that the 560SL is renowned for. Whether restoring a classic SL to its original glory or upgrading an existing installation, this OEM-quality harmonic balancer and crank pulley assembly ensures compatibility with the R107 s drivetrain, delivering the reliability and performance expected from one of Mercedes-Benz s most revered models.

### **Pros and Cons of buying a Mercedes-Benz 1100322704 (R107 560SL Harmonic Balancer/Crank Pulley, 86-89)**

#### **Pros:**

1. **Direct Fitment** This part is specifically designed for the R107 560SL model from 1986 to 1989, ensuring compatibility without modifications.

2. **High-Quality Material** Mercedes-Benz parts are generally built to meet or exceed OEM standards, providing durability and reliability.

3. **Prevents Engine Damage** A failing harmonic balancer or crank pulley can cause severe engine damage due to vibration or imbalance. Replacing it proactively avoids costly repairs.

4. **Improves Smoothness** A worn balancer can introduce excessive vibration, reducing ride comfort and potentially affecting drivability.

5. **Authentic Performance** Using an OEM or high-quality aftermarket part ensures the engine runs as intended by Mercedes-Benz engineering.

6. **Warranty Coverage** If purchased from a reputable dealer or supplier, it may come with a warranty, offering peace of mind.

7. **Easier Installation** Since it s a direct replacement, installation is straightforward for those with mechanical experience or when done professionally.

#### **Cons:**

1. **High Cost** Mercedes-Benz OEM parts, especially for older models, can be expensive compared to aftermarket alternatives.

2. **Limited Availability** Finding this exact part may require ordering from specialty suppliers, which could involve shipping delays.

3. **Potential Counterfeit Risk** If buying from untrusted sources, there s a chance of receiving a fake or low-quality part, which could fail prematurely.

4. **Labor Costs** Replacing a harmonic balancer/crank pulley typically requires removing the timing belt/chain cover, which may incur significant labor fees at a dealership or mechanic.

5. **Mixed Reviews on Aftermarket Options** While OEM is ideal, some aftermarket versions may not match the durability or fitment precision of the original.

6. **Age of the Part** Since this is an older model, the part may not be as readily available as newer Mercedes components, potentially increasing lead times.

7. **Maintenance Overhead** If the engine has other wear issues (e.g., timing belt, water pump), addressing them simultaneously may be advisable, adding to the cost.

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### **Conclusion**

The **Mercedes-Benz 1100322704 harmonic balancer/crank pulley (R107 560SL, 86-89)** is a critical component that, when replaced, prevents catastrophic engine failure and maintains smooth operation. While the **pros** such as direct fitment, high quality, and proactive engine protection outweigh the **cons** (primarily cost and availability), the decision depends on your budget, priorities, and whether you re addressing a known issue or performing preventive maintenance.

If the part is needed urgently or you prioritize reliability, **purchasing the OEM or a trusted aftermarket version from a reputable supplier is recommended**. However, if cost is a concern, compare quotes from multiple sources and consider whether a high-quality aftermarket alternative (e.g., from **Fel-Pro, Duralast, or a Mercedes specialist**) offers a comparable balance of performance and price.

**Final Recommendation:**

- **Buy from a trusted supplier** (e.g., **Mercedes-Benz dealership, RockAuto, or a specialist parts store**) to avoid counterfeit or low-quality parts.

- **Budget for labor** this is not a DIY job for most owners unless they have experience with engine work.

- **Check for bundled deals** if replacing the timing belt or water pump simultaneously, some shops offer discounts for combined services.

- **Verify the part s condition** upon receipt (e.g., check for cracks, wear, or damage) before installation.

For long-term reliability, **OEM is the safest choice**, but a well-reviewed aftermarket part from a brand with a strong reputation in automotive components can also be a cost-effective alternative. Always prioritize quality over price when it comes to critical engine components.

Details:

part #: 1100322704 price

  • $300.00

specifications cranshafengin:

  • for models: R107, 560sl
  • for makes: Mercedes
  • for years: 1986-1989
  • mpn: 1100322704
  • part type: Balancer Crank
  • material: Steel
  • vintage part: Yes
  • country of origin: Germany
  • performance part: No

seller cranshafengin:

  • rating: 99.6%
  • # reviews: 2943
  • city: Myrtle Beach, South Carolina

shipping cranshafengin:

  • transit: 5-12 Days
  • type: Fixed
  • cost: $0.00
  • service: Standard
  • class: Standard

offer cranshafengin:

  • availability: In Stock
  • sold: 0
  • quantity: 1
  • started: February 6, 2026
  • options: Ship-to-home

returns cranshafengin:

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

general cranshafengin:

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

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for models: r107, 560sl, for makes: mercedes, for years: 1986-1989, part type: balancer crank, vintage part: yes, country of origin: germany, performance part: no,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, material: steel, sku: 18708664338380891,
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