CONTINENTAL 653129 Tcm Crankshaft Counterweights M010 0000A

( Brand: Continental ), ( Manufacturer Part Number: 653129 ), ( Part Type: Crankshaft )

Review CONTINENTAL Tcm Crankshaft Counterweights fits IO-360

The **Continental 653129 TCM IO-360 Crankshaft Counterweights (M010 0000A)** is a precision-engineered component designed exclusively for the high-performance **IO-360 engine family**, a staple in the aviation and marine industries for decades. These counterweights are a critical part of the crankshaft assembly, meticulously crafted to balance the rotating mass and minimize harmful vibrations that could compromise engine longevity and performance. Engineered from high-grade, heat-treated steel, these counterweights are built to withstand the extreme stresses of high RPM operation, ensuring smooth and reliable power delivery under demanding conditions. The **M010 0000A** designation indicates a specific revision or variant tailored for certain applications, often requiring exacting tolerances to maintain optimal engine balance and efficiency. Whether installed in a **Lycoming IO-360** aircraft engine or a marine propulsion system, these counterweights play a vital role in preserving the structural integrity of the crankshaft while enhancing overall engine durability. Their precise machining and robust construction make them a trusted replacement part for both original equipment manufacturers (OEM) and aftermarket restorations, ensuring that engines continue to operate with the same level of precision and reliability for which Continental engines are renowned.

**Pros and Cons of Buying Continental 653129 TCM IO-360 Crankshaft Counterweights (M010 0000A)**

### **Pros**

1. **OEM Quality and Fitment** These counterweights are designed as genuine parts for the Continental IO-360 engine, ensuring a precise fit and proper balance. Using OEM components reduces the risk of compatibility issues or premature wear.

2. **Durability and Performance** Continental s manufacturing standards ensure high-quality materials and machining, which contribute to long-term reliability and optimal engine performance. Properly balanced crankshaft counterweights help maintain smooth operation and reduce vibration.

3. **Warranty and Support** As an original equipment part, these counterweights may come with a manufacturer s warranty or support, providing peace of mind in case of defects or installation issues.

4. **Compatibility with Aftermarket Upgrades** Since the IO-360 is a popular engine in performance applications (e.g., turbocharging, forced induction), these counterweights are likely to be compatible with aftermarket modifications, provided the rest of the engine is properly supported.

5. **Prevents Engine Damage** An improperly balanced crankshaft can lead to excessive wear on bearings, seals, and other components. Using the correct counterweights helps prevent costly damage and extends engine life.

6. **Easier Installation** Being a direct replacement part, these counterweights should align seamlessly with the crankshaft s existing design, simplifying the installation process compared to aftermarket alternatives that may require machining or modification.

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### **Cons**

1. **Cost** OEM parts like these are typically more expensive than aftermarket alternatives. The price may be a significant investment, especially if purchasing as a standalone part rather than as part of a full engine rebuild kit.

2. **Limited Availability** Depending on the region and supplier, these parts may not always be in stock, requiring patience or expedited shipping. Some specialty distributors may charge additional fees for urgency.

3. **Potential for Counterfeit Parts** If purchasing from non-authorized sellers, there is a risk of receiving counterfeit or substandard parts that do not meet Continental s quality standards. Always verify the seller s reputation and authenticity.

4. **Installation Complexity** While the part itself is straightforward, replacing crankshaft counterweights often requires removing the crankshaft from the engine block, which can be labor-intensive. This may necessitate professional assistance, adding to the overall cost.

5. **No Flexibility for Customization** Unlike some aftermarket options, these counterweights do not offer weight adjustments or customization for specific tuning needs. If you re modifying the engine for extreme performance (e.g., high RPM or aggressive turbocharging), you may need to explore alternative solutions.

6. **Depreciation Risk** If the engine is part of a vehicle or application with high mileage or wear, the cost of replacing just the counterweights may not justify the investment compared to a full engine overhaul or replacement.

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### **Conclusion**

The **Continental 653129 TCM IO-360 crankshaft counterweights (M010 0000A)** are a reliable and high-quality choice for maintaining or restoring the balance and performance of your IO-360 engine. They offer the advantage of OEM fitment, durability, and compatibility with stock and many aftermarket setups. However, the higher cost, potential availability issues, and the labor-intensive installation process are notable drawbacks.

If your priority is **long-term reliability, engine protection, and peace of mind**, these counterweights are a strong recommendation, especially if you re performing a rebuild or addressing known balance issues. If budget or convenience is a concern, you may weigh the option of purchasing from a reputable aftermarket supplier (while ensuring compatibility) or consulting a mechanic to assess whether the counterweights are truly necessary for your specific application.

- You are rebuilding or restoring an IO-360 engine and need OEM-quality parts.

- You have confirmed that the crankshaft balance is compromised (e.g., due to wear, modification, or damage).

- You are willing to invest in genuine parts to avoid potential long-term engine issues.

- You are on a tight budget and can find equally reliable aftermarket alternatives at a lower cost.

- The engine is severely worn, and a full rebuild or replacement may be more cost-effective.

- You lack the tools or expertise to install them properly, and professional labor would significantly increase the expense.

For most serious engine enthusiasts or professionals, the benefits of using OEM counterweights outweigh the drawbacks, making them a worthwhile investment. Always pair this purchase with a thorough inspection of the crankshaft and surrounding components to ensure optimal performance.

Details:

Excellent condition. Also includes 2 overhauled counterweights. Selling a TCM Continental IO-360 crankshaft with counterweights. Recently overhauled by Aircraft Specialties 3/2026.

Mains and Rod both M010.

part #: 653129 prices

• $300.00-$950.00

specifications engineaviatio:

• for models: Io-360
• brand: Continental
• mpn: 653129
• part type: Crankshaft

shipping engineaviatio:

• class: Standard
• type: Calculated
• transit: 3-9 Days
• cost: $144.94
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery

offer engineaviatio:

• started: March 31, 2026
• options: Ship-to-home
• best offers: True
• availability: In Stock
• quantity: 1
• sold: 0

seller engineaviatio:

• city: Lakeland, Florida
• rating: 100.0%
• # reviews: 3790

payments engineaviatio:

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

returns engineaviatio:

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

general engineaviatio:

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

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