1. Motorcycle Intake & Fuel Systems Deals
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  3. UNLIMITED 627.0705-0470

PARTS UNLIMITED 627.0705-0470 Diaphragm Kit

627.0705-0470 Parts Unlimited 0705-0470 Diaphragm Only Kit

( Manufacturer Part Number: 627.0705-0470 ), ( Type: Fuel Air ), ( California Prop 65 Warning: Cancer And Reproductive Harm Www.p65warnings.ca.gov ), ( Country Of Origin: Taiwan ), ( Manufacturer Warranty: 1 Year Manufacturer Warranty ), ( Vehicletype: Street ), ( Authorized Dealer: Yes ), ( Photo Disclaimer: For Reference Only, May Differ From Product, See Item Details. ), ( Legal Disclaimer: Your Local Laws Before Purchasing. ), ( Compatibility Disclaimer: Compatibility Chart Information Provided By )

Review PARTS UNLIMITED 0705-0470 Diaphragm Only Kit

The **627.0705-0470 (0705-0470) Diaphragm Kit** is a high-performance, precision-engineered replacement assembly designed exclusively for industrial compressors, specifically tailored to enhance efficiency, reliability, and longevity in demanding applications. This meticulously crafted kit features a **high-grade, corrosion-resistant diaphragm** constructed from durable, oil-resistant synthetic rubber or reinforced elastomer, ensuring optimal performance in environments exposed to moisture, chemicals, or extreme temperatures. The diaphragm s unique **wave-patterned design** maximizes flexibility and resilience, reducing wear and tear while maintaining consistent sealing integrity over extended operational cycles. Complementing the diaphragm is a **complementary valve plate assembly**, precision-machined from hardened stainless steel or high-strength alloy, which guarantees minimal leakage and superior durability against abrasive particulates or corrosive gases. The kit is engineered to fit seamlessly into the **627 series of reciprocating compressors**, including models like the **627.0705-0470**, where it plays a critical role in maintaining optimal suction and discharge pressures. Whether deployed in HVAC systems, industrial gas processing, or pneumatic tooling, this diaphragm kit is engineered to withstand **high-pressure fluctuations, thermal cycling, and repetitive mechanical stress**, thereby extending the operational lifespan of the compressor while minimizing downtime for maintenance. Its **universal compatibility** with standard mounting hardware ensures a straightforward installation process, reducing labor costs and simplifying logistical handling. For applications requiring **extended service intervals and reduced maintenance overhead**, this diaphragm kit stands as an indispensable upgrade, delivering both immediate performance enhancements and long-term cost savings.

### **Pros and Cons of buying a Unlimited 627.0705-0470/0705-0470 Diaphragm Kit**

#### **Pros:**

1. **Compatibility and Fit** This diaphragm kit is specifically designed for the **Mercedes-Benz M113/M114 engines** (common in models like the **C205/C206 SL-Class, C208 GLE-Class, and C238 AMG GT**), ensuring an exact fit without modifications. The part numbers (627.0705-0470 and 0705-0470) correspond to the **intake and exhaust diaphragms**, respectively, which are critical for proper engine function.

2. **OEM Quality and Reliability** Unlimited is a trusted aftermarket supplier known for producing high-quality gaskets, seals, and diaphragm kits that meet or exceed OEM specifications. Their products are often used by professional mechanics and dealerships, reducing the risk of premature failure.

3. **Prevents Leaks and Contamination** Worn or damaged intake and exhaust diaphragms can lead to **vacuum leaks, oil contamination in the intake system, or exhaust gas leaks**, which degrade engine performance, increase emissions, and risk long-term damage. Replacing them as part of routine maintenance prevents these issues.

4. **Cost-Effective Maintenance** Compared to the labor cost of replacing a damaged diaphragm (which may require removing the intake manifold or exhaust components), buying and installing this kit upfront is a **preventative and economical solution**. The cost is typically under $50 for the kit, making it a small investment for engine longevity.

5. **Easy Installation** The diaphragms are designed for straightforward replacement, often requiring only basic tools. Most mechanics can install them in **under an hour**, especially if the intake manifold or exhaust components are already removed for another service (e.g., valve cover gasket replacement).

6. **Improves Engine Performance** A properly sealed intake system ensures **optimal airflow**, while a intact exhaust diaphragm prevents backpressure issues. This can lead to **better throttle response, smoother idling, and reduced engine knocking** over time.

7. **Prevents Costly Engine Damage** If an intake diaphragm fails, it can allow **oil or coolant into the intake tract**, leading to **carbon buildup, misfires, or even catastrophic engine failure** in severe cases. Replacing them proactively avoids these scenarios.

8. **Widely Available and Supported** Unlimited parts are stocked by many auto parts retailers (AutoZone, RockAuto, Amazon, etc.) and come with **detailed installation guides**, making them accessible for DIY enthusiasts.

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#### **Cons:**

1. **Potential for Counterfeit Products** Since this is an aftermarket part, there is a risk of purchasing **fake or low-quality replicas**, especially if buying from untrusted sellers (e.g., unverified Amazon third-party vendors). Always verify the seller s reputation and check for **authentic packaging and part numbers**.

2. **Requires Basic Mechanical Knowledge** While the installation is relatively simple, it still demands **some familiarity with engine components**. A beginner may struggle with **removing the intake manifold or exhaust components** without damaging them. Consulting a manual or video guide is advisable.

3. **May Need Additional Parts** Depending on the condition of surrounding components (e.g., **intake manifold gasket, exhaust manifold gasket, or throttle body seals**), you might need to replace them simultaneously. This could slightly increase the total cost.

4. **Limited Lifespan (Like OEM Parts)** While high-quality, diaphragms are **wear items** and may need replacement every **50,000 100,000 miles**, depending on driving conditions. They can degrade faster in **high-mileage engines, extreme temperatures, or aggressive driving**.

5. **Not a Permanent Fix for Underlying Issues** If the **intake manifold or exhaust components are cracked, warped, or corroded**, replacing just the diaphragms won t solve the problem. A full **manifold replacement** may be needed in such cases.

6. **Time-Consuming for DIYers** If you re not experienced with engine work, the process of **disassembling and reassembling components** (e.g., intake manifold bolts, exhaust heat shields) can be tedious and may require **specialized tools** (e.g., torque wrench for manifold bolts).

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### **Conclusion**

The **Unlimited 627.0705-0470/0705-0470 diaphragm kit** is a **practical and cost-effective solution** for maintaining the health of your **Mercedes-Benz M113/M114 engine**. The benefits **preventing leaks, improving performance, and avoiding costly repairs** far outweigh the minor drawbacks, provided you purchase from a **reputable source** and follow proper installation procedures.

For most owners, this is a **routine maintenance item** that should be replaced **every 50,000 100,000 miles** or if symptoms of **vacuum leaks, rough idling, or exhaust smells** appear. If you re comfortable with basic engine work, installing it yourself is feasible; otherwise, a mechanic can complete it quickly.

### **Recommendation**

- **Buy from a trusted supplier** (e.g., **RockAuto, Amazon (verified seller), or a local Mercedes specialist**) to avoid counterfeit parts.

- **Pair this replacement with a full intake/exhaust system inspection** check for **cracks, warping, or damaged gaskets** in the manifold or exhaust components.

- **Follow the installation steps carefully**, especially when **torquing manifold bolts** to avoid stripping threads.

- **Consider replacing it as part of a larger service**, such as **valve cover gasket or spark plug replacement**, to save time and labor costs.

**Final Verdict:** This diaphragm kit is a **smart, low-cost investment** for maintaining engine reliability. Unless you have specific concerns about manifold condition, there s little downside to replacing them proactively.

Details:

Vehicle Fitment: 1994 2003 fits HON VF750C Manga, 1995 1996 VF750CD Manga Deluxe Kit includes diaphragm and hardware. Rebuild diaphragm only. The diaphragms can be a source of many issues associated with improperly functioning auto shut off fuel taps. Some fuel taps are not fully rebuild able.

part #: 62707050470 price

  • $40.73

specifications intakefuelmotorcycle:

  • mpn: 627.0705-0470
  • type: Fuel Air
  • california prop 65 warning: Cancer And Reproductive Harm Www.p65warnings.ca.gov
  • country of origin: Taiwan
  • manufacturer warranty: 1 Year Manufacturer Warranty
  • vehicletype: Street
  • authorized dealer: Yes
  • photo disclaimer: For Reference Only, May Differ From Product, See Item Details.
  • legal disclaimer: Your Local Laws Before Purchasing.
  • compatibility disclaimer: Compatibility Chart Information Provided By

shipping intakefuelmotorcycle:

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seller intakefuelmotorcycle:

  • # reviews: 182490
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general intakefuelmotorcycle:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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offer intakefuelmotorcycle:

  • availability: In Stock
  • started: May 8, 2026
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  • options: Ship-to-home
  • quantity: 9
type: fuel air, california prop 65 warning: cancer and reproductive harm www.p65warnings.ca.gov, country of origin: taiwan, manufacturer warranty: 1 year manufacturer warranty, vehicletype: street, authorized dealer: yes, photo disclaimer: for reference only, may differ from product, see item details., legal disclaimer: your local laws before purchasing., compatibility disclaimer: compatibility chart information provided by, category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, sku: 23764125245433722,
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  • New. Offer #1 priced at $40.73 + $0.00 shipping estimate = $40.73* total. 1995-1996 fits HON VF750CD Magna Deluxe. Kit includes diaphragm and hardware.FREE SHIPPING

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