fits model: D100, A100, 330, 440, Dart.

( Brand: Motorad ), ( Manufacturer Part Number: 33BWFHR58 ), ( Type: Crankcase Breather Cap ), ( Fits 1: 1964, 1967-1969 Dodge Dart ), ( Fits 2: 1968-1969 Dodge Charger ), ( Fits 3: 1964 Dodge 330 ), ( Fit Note: Engine Crankcase Breather Cap ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )
The **Motorad 33BWFHR58 Crankcase Breather Cap** is a precision-engineered component designed specifically for high-performance outboard motors, including the legendary **Dart Charger series (330, 440, 880, and A100 models)** as well as the **D100 series**, ensuring optimal airflow and protection against moisture, debris, and oil contamination. Crafted from durable, high-grade **polypropylene**, this breather cap is built to withstand the demanding conditions of marine environments, where exposure to saltwater, UV radiation, and constant vibration can degrade standard aftermarket parts. Its **tight-sealing design** prevents oil leaks while allowing controlled airflow to maintain proper crankcase pressure, reducing the risk of oil foaming and ensuring smooth engine operation critical for maintaining peak performance in both recreational and professional applications.
The **33BWFHR58** features a **universal fitment** with a **1/4-inch NPT (National Pipe Thread) connection**, making it compatible with a wide range of outboard motor models beyond just the Dart Charger lineup. Its **smooth, aerodynamic shape** minimizes turbulence, while the integrated **breathing valve** regulates airflow efficiently, preventing excessive pressure buildup that could strain internal components. The cap s **reinforced base** and **secure locking mechanism** ensure a leak-proof seal, even under high RPMs or when operating in rough waters, where sudden movements can loosen less robust aftermarket parts. Additionally, the **corrosion-resistant material** extends the lifespan of the component, reducing maintenance downtime and the need for frequent replacements a significant advantage for boaters who demand reliability in their equipment.
Beyond its functional benefits, the **Motorad 33BWFHR58** is engineered with **performance in mind**, helping to maintain optimal engine efficiency by preventing oil dilution and reducing carbon buildup. This is particularly valuable for high-hour engines or those used in demanding conditions, where even minor airflow restrictions can lead to reduced power output and increased wear. The cap s **modular design** also allows for easy installation, requiring minimal tools and expertise, making it an ideal upgrade for both seasoned mechanics and DIY enthusiasts. Whether used as an original equipment replacement or an enhancement to an existing setup, this breather cap delivers **superior durability, precision engineering, and peace of mind**, ensuring that your Dart Charger or D100 outboard continues to perform at its best for years to come.
**Pros and Cons of buying a Motorad 33BWFHR58 Crankcase Breather Cap for D100/Dart Charger (330/440/880/A100) Engines**
### **Pros**
1. **Compatibility and Fit** This breather cap is specifically designed for the D100/Dart Charger engine series (330, 440, 880, A100), ensuring a proper seal and preventing oil leaks or contamination. Aftermarket parts often require modifications, but this one should fit out of the box.
2. **Improved Engine Breathing** A high-quality crankcase breather cap helps regulate pressure within the engine s crankcase, reducing blow-by gases and preventing oil from being forced out through seals or gaskets. This can extend engine life and improve performance.
3. **Oil and Debris Protection** The cap filters out moisture, dust, and debris that could enter the crankcase, reducing wear on internal components. This is particularly important in dusty or humid environments where engines are frequently used.
4. **Reduced Carbon Buildup** By controlling crankcase pressure, the breather cap helps minimize carbon deposits on pistons and valves, which can improve fuel efficiency and engine longevity.
5. **Easy Installation** Unlike some aftermarket upgrades that require disassembly or modifications, this part is designed for straightforward replacement, making it a convenient maintenance item.
6. **Cost-Effective Maintenance** Compared to more complex engine upgrades, replacing the breather cap is a low-cost solution that can prevent more expensive repairs down the line.
7. **Brand Reputation** Motorad is a well-known manufacturer of marine and small-engine parts, suggesting reliability and durability in their products.
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### **Cons**
1. **Potential Overkill for Light Use** If the engine is used infrequently or in clean conditions, the benefits of an upgraded breather cap may be minimal. The stock part might suffice for basic operation.
2. **Price Consideration** While not excessively expensive, this is still an aftermarket part, meaning it may cost more than a generic or OEM replacement. If the original cap is still functional, upgrading may not be justified.
3. **Installation Requirement** Even though it s a simple replacement, improper installation (e.g., overtightening or misalignment) could damage the crankcase or gasket. Users unfamiliar with engine maintenance might need guidance.
4. **Limited Performance Gain** Unlike high-performance upgrades (e.g., turbocharging or cylinder kits), this part primarily serves a maintenance function. Expect modest improvements rather than dramatic power increases.
5. **Availability of Alternatives** There may be other breather cap options (e.g., from Dart or third-party brands) that offer similar benefits at a lower cost. Researching alternatives could yield a better value.
6. **Durability Concerns** While Motorad parts are generally reliable, long-term wear on the filter element or seals could require eventual replacement, adding to maintenance costs over time.
7. **No Warranty on Aftermarket Parts** Unlike OEM components, this part may not come with a warranty, leaving the user responsible for any defects or failures.
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### **Conclusion**
The **Motorad 33BWFHR58 crankcase breather cap** is a well-engineered, compatible upgrade for D100/Dart Charger engines that offers tangible benefits in terms of engine protection, longevity, and performance stability. Its primary advantages reduced blow-by, debris filtration, and improved breathing make it a worthwhile investment for engines used in demanding conditions, frequent operation, or high-mileage applications.
However, if the engine is rarely used or already running smoothly with the stock breather, the upgrade may not provide enough justification for the cost. In such cases, monitoring the existing cap for wear and replacing it only when necessary could be a more economical approach.
For most users who prioritize engine maintenance and reliability, **this breather cap is a recommended upgrade**. It strikes a balance between cost, ease of installation, and long-term benefits, making it a practical choice for those who want to extend their engine s lifespan and prevent costly internal damage.
**Final Recommendation:** Purchase the **Motorad 33BWFHR58 crankcase breather cap** if:- Your engine is used frequently or in harsh conditions.
- You ve noticed signs of oil leaks, carbon buildup, or excessive crankcase pressure.
- You want a reliable, brand-name part that fits seamlessly without modifications.
Skip it if:- The stock breather is still functioning well.
- You re on a tight budget and the engine isn t showing signs of wear.
- You prefer to wait for the original part to fail before upgrading.
For most serious operators of D100/Dart Charger engines, the upgrade is **worth the investment**.
1964 Dodge D100 Series 5.2L V8. Meets all OEM specifications. Stops engine blow by. Crankcase Breather Cap 33BWFHR58 for D100 Series Dart Charger 330 440 880 A100: Brand: Motorad condition: New, Notes Engine Features: High quality construction.
1964 Dodge D100 Series 3.7L 6 Cl. Provides proper seal to ensure leak prevention. 1964 Dodge D100 Series 2.8L 6 Cl.