LYCOMING 4-652568-3-5-7 Turbocharger Blanket Insulation 4-652568-3/5/7 Blanket/insulation 3PCS 452 907/8/9

( Brand: Lycoming ), ( Manufacturer Part Number: 4-652568-3/5/7 )

Review LYCOMING 4-652568-3/5/7 Turbocharger Blanket/insulation 3pcs 452 907/8/9

The **Lycoming 4-652568-3/5/7 Turbocharger Blanket/Insulation (3-Piece Set, Part Numbers 452, 907/8/9)** is a meticulously engineered, high-performance insulation kit designed exclusively for Lycoming s 650-series turbocharged engines, including the iconic O-360, IO-360, and related aircraft powerplants. Crafted from advanced ceramic fiber materials, this three-piece blanket set provides superior thermal protection, ensuring optimal turbocharger efficiency while safeguarding critical engine components from excessive heat buildup. The insulation is engineered to withstand extreme temperatures, reducing heat transfer to surrounding structures such as the exhaust manifold, turbocharger housing, and intake piping thereby enhancing durability and preventing premature wear. Each piece in the set is precisely cut to fit snugly around the turbocharger s housing and exhaust ports, minimizing gaps that could compromise insulation effectiveness. The ceramic fiber composition not only resists thermal degradation but also offers excellent resistance to vibration and mechanical stress, making it ideal for the demanding conditions of high-performance and aerobatic aircraft applications. Whether installed on a classic Cessna 172, a high-performance Piper Archer, or a specialized aerobatic aircraft, this insulation kit helps maintain consistent turbocharger performance, reduces the risk of heat-related failures, and extends the lifespan of critical engine components. Its lightweight yet robust design ensures minimal impact on overall engine weight while maximizing thermal efficiency, making it a must-have upgrade for any turbocharged Lycoming engine owner seeking reliability and longevity.

### Pros and Cons of buying a Lycoming 4-652568-3/5/7 Turbocharger Blanket/Insulation (3PCS, Part Numbers 452-907/8/9)

1. **Enhanced Turbocharger Protection** The insulation blanket helps maintain optimal turbocharger temperatures by reducing heat loss, preventing thermal shock, and extending the lifespan of the turbo. This is particularly useful in high-performance or turbocharged Lycoming engines where overheating is a risk.

2. **Improved Efficiency** By retaining heat around the turbocharger, the insulation can help maintain consistent boost levels, reducing lag and improving throttle response. This is beneficial for aircraft that rely on smooth power delivery.

3. **Reduced Heat Transfer to Surrounding Components** The blanket minimizes heat transfer to adjacent parts (such as the exhaust manifold or intercooler), reducing the risk of warping, cracking, or premature wear in nearby components.

4. **Compatibility with Turbocharged Lycoming Engines** These part numbers (452-907/8/9) are designed specifically for the Lycoming 4-652 series (O-360, IO-360, etc.), ensuring a proper fit and function without modifications.

5. **Easy Installation** The 3-piece design allows for straightforward installation around the turbocharger housing, reducing labor time compared to custom or DIY solutions.

6. **Cost-Effective Upgrade** Compared to full turbocharger replacements or extensive engine modifications, this insulation is a relatively inexpensive way to improve turbo performance and longevity.

7. **Prevents Carbon Buildup** By maintaining stable temperatures, the blanket can reduce the formation of carbon deposits on turbo internals, which can degrade efficiency over time.

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1. **Limited Durability in Extreme Conditions** While high-quality, ceramic or fiber-based insulation can degrade over time, especially in environments with extreme temperature fluctuations, oil contamination, or mechanical stress. Regular inspection is recommended.

2. **Potential for Improper Installation** If not installed correctly (e.g., gaps, misalignment, or excessive compression), the blanket may fail to provide adequate insulation, leading to heat loss or even damage to the turbo.

3. **Cost of Replacement Parts** If the insulation degrades or is damaged, replacement may be necessary, adding to maintenance costs. Authentic Lycoming parts can be expensive compared to aftermarket alternatives.

4. **Compatibility Concerns with Modifications** If the aircraft has been heavily modified (e.g., forced induction, custom exhaust), the stock insulation may not fully address the new thermal loads. Additional cooling or insulation may be required.

5. **Weight Consideration** While minimal, adding insulation increases the turbo assembly s weight slightly, which could have negligible but cumulative effects on overall engine balance or performance in high-performance applications.

6. **Maintenance Requirements** The insulation should be inspected periodically for cracks, soot buildup, or deformation, especially in turbocharged engines where carbon and oil can accumulate. Neglecting maintenance could lead to reduced effectiveness.

7. **Potential for Overheating if Misused** In rare cases, if the turbo operates at excessively high temperatures (e.g., due to rich fuel mixtures or clogged intercoolers), the insulation could trap heat and contribute to overheating if the system lacks adequate cooling.

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The Lycoming 4-652 turbocharger insulation blanket is a **highly recommended upgrade** for owners of turbocharged Lycoming engines (such as the O-360 or IO-360 series) looking to improve turbo longevity, efficiency, and reliability. The benefits including better heat retention, reduced thermal stress, and easier installation outweigh the minor drawbacks, provided the insulation is installed correctly and maintained.

However, it is not a "set-and-forget" solution. Regular inspections and adherence to maintenance protocols are essential to ensure long-term performance. For heavily modified or high-performance aircraft, pairing this insulation with additional cooling solutions (e.g., intercooler upgrades or better exhaust routing) may further enhance protection.

- **Buy it if:** You have a turbocharged Lycoming engine and want to extend turbo life, improve boost consistency, or prevent heat-related failures. It s a worthwhile investment for most turbocharged Lycoming applications.

- **Consider alternatives if:** Your engine is heavily modified or operates under extreme conditions where additional cooling measures (e.g., a larger intercooler or forced-air cooling) are also needed.

- **Installation tip:** Follow Lycoming or manufacturer guidelines precisely to ensure a proper fit and seal. Use high-temperature adhesive or clamps as recommended.

- **Maintenance tip:** Inspect the insulation annually for damage, soot buildup, or degradation, especially in high-hour or high-performance aircraft.

**Final Verdict:** For standard turbocharged Lycoming engines, this insulation is a **strongly recommended upgrade** with a positive cost-to-benefit ratio.

Details:

Please all pictures as they are part of the. Unknown condition. More parts are available. Turbocharger Insulation blankets 3pcs 4-652568-3 4-652568-5 4-652568-7 Removed from N6542Y, 1968 Piper Aztec PA23-250, Lycoming IO540-J4A5 Sold as is.

part #: 4652568357 price

• $210.00

specifications engineaviatio:

• brand: Lycoming
• mpn: 4-652568-3/5/7

payments engineaviatio:

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

shipping engineaviatio:

• class: Standard
• carrier: USPS
• transit: 4-11 Days
• type: Calculated
• service: USPS Ground Advantage
• cost: $7.57

general engineaviatio:

• Aviation Parts Accessories > Engines > Engine Components
• condition: Used

seller engineaviatio:

• rating: 100.0%
• # reviews: 3
• city: Point Roberts, Washington

offer engineaviatio:

• options: Ship-to-home
• sold: 0
• started: February 24, 2026
• quantity: 1
• availability: In Stock
• best offers: True

returns engineaviatio:

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

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