MERCEDES 1170160705 Engine Cylinder Valve Cover Right Benz 86-91

( Manufacturer Part Number: 1170160705 ), ( Part Type: Valve Cover Engine Cylinder ), ( Oe/oem Part Number: Oem ), ( Manufacturer Warranty: No Warranty ), ( Vintage Part: Yes ), ( Country Of Origin: Germany ), ( Performance Part: No ), ( California Prop 65 Warning: Motor Vehicles California Requires The Following Notice, Oils And Fluids, Battery Posts, Terminals And Related Accessories Which Contain Lead And Lead Compounds And Other Chemicals Known To The State Of California To Cause Cancer, Birth Defects And Other Reproductive Harm. These Chemicals Are Found In Vehicles, Vehicle Parts And Accessories, Both New And As Replacements. When Being Serviced, These Vehicles Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm. )

Review MERCEDES benz 86-91 Oem Engine Cylinder Valve Cover Right fits W126 420SEL

The **Mercedes-Benz 1170160705 engine cylinder valve cover** is a precision-crafted component designed exclusively for the iconic **W126 420SEL models** produced between **1986 and 1991**, marking it as a rare and highly sought-after part for enthusiasts and restorers of this legendary luxury sedan. Engineered to exacting standards, this valve cover is manufactured from high-quality **cast aluminum**, ensuring durability, thermal efficiency, and a sleek, aerodynamic finish that complements the engine bay s refined aesthetic. The cover features a **right-side orientation**, aligning perfectly with the **M117 4.2-liter inline-six engine**, which powers the 420SEL with its smooth, torque-rich performance. Its design incorporates a **sealed gasket interface**, complete with precision-machined surfaces to prevent oil leaks and maintain optimal engine integrity, a critical consideration for maintaining the engine s longevity and performance. The cover is also equipped with **breathing ports** for the PCV (Positive Crankcase Ventilation) system, ensuring proper crankcase pressure regulation while minimizing emissions a feature essential for both performance and compliance with emissions standards of the era. Whether used in a meticulous restoration project or as a replacement for an aging original, this valve cover exemplifies Mercedes-Benz s commitment to engineering excellence, blending functionality with the timeless elegance of the W126 platform. Its compatibility with the **420SEL s** signature V8 and inline-six configurations makes it a versatile upgrade for those seeking to preserve or enhance the mechanical heritage of this legendary automobile.

### **Pros and Cons of Buying a Mercedes-Benz W126 420SEL (1986-1991) Right Cylinder Valve Cover (Part Number: 1170160705)**

1. **Authentic Fit and Finish** This is an original Mercedes-Benz part, ensuring a perfect fit with the engine bay s aesthetics. It maintains the vehicle s classic look, which is important for owners who value authenticity in their W126 models.

2. **Reliability and Durability** Mercedes-Benz parts, especially those from the original manufacturer, are generally built to last. The valve cover is made from high-quality materials designed to withstand the engine s heat and vibrations over time.

3. **Prevents Leaks and Contamination** A worn or damaged valve cover can lead to oil leaks, which can contaminate the engine s electrical components (such as the distributor or ignition system) and reduce performance. Replacing it ensures a proper seal and prevents such issues.

4. **Maintenance of Engine Health** The valve cover protects the engine s internal components from dust, moisture, and debris. A well-sealed cover helps maintain optimal engine performance and longevity.

5. **Compatibility with Aftermarket Modifications** If you plan to modify your engine (e.g., performance upgrades, intake/exhaust changes), an original valve cover ensures compatibility with aftermarket parts that may require proper sealing.

6. **Resale Value Preservation** Keeping original parts intact can help preserve the vehicle s value, especially if you plan to sell it in the future. Buyers often prefer cars with minimal aftermarket modifications.

7. **Easier Installation** Since it s an OEM part, it should fit without requiring extensive modifications, making the installation process smoother compared to aftermarket alternatives that may not align perfectly.

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1. **Cost** Original Mercedes-Benz parts, especially for older models like the W126, can be expensive. The valve cover itself may not be the most costly component, but if labor costs are high (due to the complexity of the engine bay), the total repair expense can add up.

2. **Availability and Lead Times** Finding an exact OEM replacement part may require ordering from specialty suppliers, which can result in longer wait times compared to more common aftermarket parts.

3. **Potential for Counterfeit Parts** There is a risk of purchasing a fake or low-quality OEM part, especially if buying from untrusted sources. Always verify the seller s reputation and the part s authenticity.

4. **Labor Intensity** Removing and installing the valve cover on a W126 engine can be labor-intensive due to the engine s size and the number of components that need to be disconnected (e.g., intake manifold, hoses, electrical connectors). This may require professional installation, increasing costs.

5. **Alternative Aftermarket Options** While not always as high-quality, aftermarket valve covers may be cheaper and available more quickly. Some aftermarket parts are designed to match the original closely, offering a cost-effective alternative without sacrificing too much on fit or finish.

6. **Potential for Overkill** If the valve cover is only slightly damaged (e.g., minor cracks or minor oil leaks), some owners might consider a less expensive fix (e.g., sealing compound or a gasket replacement) instead of a full valve cover swap.

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Buying an original Mercedes-Benz W126 420SEL right cylinder valve cover (part number 1170160705) is a **strong choice** if you prioritize authenticity, long-term reliability, and the preservation of your vehicle s classic appeal. The part ensures a proper seal, prevents leaks, and maintains the engine s health, which is critical for an older luxury car like the W126. However, the higher cost and potential lead times may be drawbacks, especially if you re on a tight budget or need the part urgently.

If you re willing to invest in maintaining your car s originality and don t mind the associated expenses, the OEM part is the best option. If cost is a major concern, you could explore high-quality aftermarket alternatives (e.g., from reputable brands like **Fel-Pro, Eurospec, or Mopar**) that offer a good balance between price and performance. Always ensure the aftermarket part is compatible and comes with a good warranty.

- **If budget allows and authenticity is a priority:** Purchase the original Mercedes-Benz valve cover (1170160705) from a trusted supplier (e.g., **Mercedes-Benz Parts Center, eBay Motors with verified sellers, or specialty European auto parts dealers**).

- **If cost is a concern but quality is still important:** Look for a high-quality aftermarket valve cover from a well-reviewed brand, ensuring it matches the original dimensions and material specifications.

- **If the damage is minor:** Consider a gasket replacement or sealing compound as a temporary fix before committing to a full valve cover swap.

For the best results, consult with a Mercedes-Benz specialist or a trusted mechanic to confirm whether the valve cover is the only issue or if other components (e.g., gaskets, seals) need attention during the repair. Regular maintenance of the valve cover and surrounding components will help extend the life of your W126 engine.

Details:

86-91 OEM MERCEDES W126 420SEL Engine Cylinder Valve Cover Right.

part #: 1170160705 prices

• $79.00-$224.95

specifications cylinderheapar:

• for models: W126, 420sel
• for makes: Mercedes
• mpn: 1170160705
• part type: Valve Cover Engine Cylinder
• oe/oem part number: Oem
• manufacturer warranty: No Warranty
• vintage part: Yes
• country of origin: Germany
• performance part: No
• california prop 65 warning: Motor Vehicles California Requires The Following Notice, Oils And Fluids, Battery Posts, Terminals And Related Accessories Which Contain Lead And Lead Compounds And Other Chemicals Known To The State Of California To Cause Cancer, Birth Defects And Other Reproductive Harm. These Chemicals Are Found In Vehicles, Vehicle Parts And Accessories, Both New And As Replacements. When Being Serviced, These Vehicles Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm.

offer cylinderheapar:

• options: Ship-to-home
• sold: 0
• best offers: True
• started: June 11, 2026
• availability: In Stock
• quantity: 1

seller cylinderheapar:

• # reviews: 326
• rating: 100.0%
• city: Carlsbad, California

returns cylinderheapar:

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

shipping cylinderheapar:

• carrier: USPS
• type: Calculated
• transit: 5-12 Days
• service: USPS Ground Advantage
• cost: $0.00
• class: Standard

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

payments cylinderheapar:

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

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