JOHNSON 0311240 Outboard Bypass Cover CB5C

( Manufacturer Part Number: 0311240 ), ( Part Type: Cover Hp )

Review JOHNSON Outboard Hp Bypass Assembly Cover fits 1985

The **Johnson 0311240 CB5C Outboard Bypass Cover** is a meticulously engineered replacement part designed to ensure optimal performance, durability, and protection for the **85 HP CB5C outboard motor** series from Johnson, a trusted name in marine propulsion. Crafted from high-quality marine-grade materials, this bypass cover is built to withstand the harshest conditions encountered on the water, including exposure to saltwater corrosion, UV radiation, and mechanical stress. Its sleek, aerodynamic design not only enhances the aesthetic appeal of your outboard but also minimizes drag, allowing for improved fuel efficiency and smoother operation. The cover features a precise fit, ensuring a secure seal that prevents water ingress into critical components, thereby safeguarding the motor s internal systems from potential damage. Engineered with precision, the bypass cover aligns perfectly with the motor s internal bypass housing, maintaining the integrity of the cooling and lubrication pathways essential for long-term reliability. Whether you re preparing your boat for a day on the lake or a weekend of offshore fishing, this bypass cover is an essential component for preserving the performance and longevity of your Johnson 85 HP CB5C outboard. Its robust construction and attention to detail make it a must-have accessory for any boat owner seeking to maintain peak performance and extend the life of their marine engine.

### **Pros and Cons of buying a Johnson 0311240 CB5C Outboard (85 HP) with Bypass Cover (311240)**

1. **Reliable Brand Reputation** Johnson is a well-established manufacturer under the Brunswick Corporation, known for durable and dependable outboard engines. Their 85 HP engines are commonly used in fishing boats, pontoons, and small recreational vessels, offering a balance of power and efficiency.

2. **Proven Performance** The CB5C series is designed for mid-sized boats, providing sufficient horsepower for cruising, fishing, and light towing. The 85 HP rating is ideal for boats up to around 20 feet, depending on load and hull design.

3. **Fuel Efficiency** Compared to larger outboards, the 85 HP Johnson is relatively fuel-efficient, making it cost-effective for regular use. It s optimized for steady cruising rather than high-speed racing.

4. **Ease of Maintenance** Johnson outboards are known for straightforward maintenance procedures. The bypass cover (part 311240) is a common accessory that helps protect the engine from debris while allowing water to flow through, reducing strain on the cooling system.

5. **Compatibility with Accessories** The engine is designed to work with various Johnson-specific parts, including trim systems, steering units, and other performance upgrades. The bypass cover is a practical addition for boats operating in murky or debris-laden waters.

6. **Resale Value** Johnson outboards retain decent resale value, especially if well-maintained. The CB5C series is still in production or widely available, ensuring parts and service support for years.

7. **Versatility** Suitable for a range of applications, including fishing boats, ski boats, and small cruisers. The 85 HP is powerful enough for towing small watercraft or trailers without overloading the engine.

8. **Lower Operating Costs** Compared to larger outboards, the 85 HP model has lower fuel consumption and maintenance costs, making it a practical choice for casual boaters.

---

1. **Age of the Model** The CB5C series is not the latest generation of Johnson outboards. Newer models (e.g., E-TEC or newer Alpha series) offer improved fuel efficiency, emissions compliance, and digital diagnostics. If you prioritize modern features, this older model may lack them.

2. **Emissions and Regulations** Older outboards may not meet the latest EPA or CARB emissions standards, which could limit where you can operate the boat in certain regions. Check local regulations before purchasing.

3. **Limited Technology** Unlike newer engines with electronic fuel injection, real-time monitoring, and remote diagnostics, the CB5C relies on traditional carburetion or older fuel systems. This can make troubleshooting less precise.

4. **Potential for Higher Maintenance** Older engines may require more frequent maintenance, such as carburetor adjustments, spark plug replacements, and cooling system checks, compared to newer models with self-diagnostic capabilities.

5. **Bypass Cover Limitations** While the bypass cover (311240) is useful for debris protection, it may not be as effective as modern intake guards or strainers in very dirty water. Over time, clogging can still occur, requiring cleaning.

6. **Noise and Vibration** Older outboards can be noisier and vibrate more than newer, refined engines. This may affect comfort, especially in enclosed cabins or during long trips.

7. **Parts Availability** While still available, some specialized parts for older models may become harder to find as Johnson shifts focus to newer lines. Stocking up on essential parts (e.g., belts, hoses, filters) is advisable.

8. **Lower Fuel Efficiency Than Newer Models** Newer Johnson outboards (e.g., Alpha series) offer significant improvements in fuel efficiency, potentially saving money over time. The CB5C may consume more fuel for the same performance.

---

The Johnson 0311240 CB5C 85 HP outboard with bypass cover (311240) is a solid, reliable choice for boaters who prioritize durability, simplicity, and cost-effectiveness. It excels in applications where high performance isn t critical, such as fishing, cruising, or light towing. However, if you re looking for modern efficiency, emissions compliance, or advanced diagnostics, a newer model may be a better long-term investment.

The bypass cover is a practical accessory for protecting the engine in dirty water, but it s not a substitute for regular maintenance. Overall, this engine is a good option for budget-conscious buyers who value a proven, no-frills outboard.

---

- **Buy if:** You need a dependable, mid-sized outboard for fishing, cruising, or light towing; you re on a budget; and you re okay with occasional maintenance. The bypass cover is a worthwhile addition for boats in murky waters.

- **Consider alternatives if:** You want better fuel efficiency, emissions compliance, or modern features. In that case, explore newer Johnson models (e.g., Alpha 80 or E-TEC series) or other brands like Yamaha or Mercury, which offer similar power with updated technology.

- **Before purchasing:** Inspect the engine thoroughly for wear, check the service history, and ensure the bypass cover fits properly. Test the engine in water to confirm performance and cooling efficiency. If buying used, verify that all necessary parts (e.g., belts, hoses) are in good condition.

Details:

Good condition, Fresh Water.

part #: 0311240 prices

• $12.95-$25.49

specifications ouboaen:

• for makes: Johnson
• for years: 1985
• mpn: 0311240
• part type: Cover Hp

shipping ouboaen:

• service: Economy
• transit: 2-6 Days
• cost: $5.00
• type: Fixed
• class: Economy

returns ouboaen:

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

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Other

seller ouboaen:

• rating: 99.9%
• # reviews: 13945
• city: Belgium, Wisconsin

offer ouboaen:

• started: March 5, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1

payments ouboaen:

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

Johnson 0311240 Is Similar To:

• 0116761 Evinrude-johnson Bow Arm Assembly 089287000156 (32.2% similar) Bow arm assembly...(July 25th, 2017)
• 0123278 0123610 Omc Johnson Evinrude Outboard Motor Binnacle Control Box Handle Kit (36.2% similar) New handle kit fits single and dual mount binnacle controls...(May 28th, 2018)
• 0127280 Johnson Evinrude Nos Outboard Key (40% similar) Calculated shipping uses calculator. Sales: use shipping calculator to get charges. Buyer pays shipping except if free is offered. E of the value prop shaft. Note: ups cannot deliver to a PO. Under no circumstances will we falsify or undervalue export declared value documents. Torn, broken, written ...(February 19th, 2019)
• 0172522 Evinrude Johnson Oem Brp Outboard Ignition Kit 745419000677 (35.1% similar) 5 hp looking for something else. Items will only be accepted for return in their original condition, with absolutely no accessories missing. Correspondence via messaging is preferred...(May 6th, 2018)
• 0174469 Johnson Evinrude Mph Speedometer Kit Outboard Motor Part (34.4% similar) Malt please see included pictures. Item: mph speedometer kit for johnson eventide outboard motors...(March 25th, 2019)
• 0174811 174811 Johnson Evinrude Omc Stainless Prop Lh Outboard Propeller (33.8% similar) Condition: used but in good condition and guaranteed to function properly. Part: johnson eventide stainless LHS counter rotation viper prop x 19P v6 outboard propeller fits various motor parts. Pb please see included pictures...(October 30th, 2018)
• 0174973 Johnson Evinrude Remote Start Kit Later Hp Outboard Part (32.8% similar) May fit more motors. Item: remote start kit 1990 and later hp for johnson eventide outboard motors. Please see included pictures...(June 29th, 2018)
• 0176214 176214 Johnson Evinrude Aluminum Prop Outboard Propeller (34.4% similar) Please see included pictures. Pb part: johnson eventide aluminum prop x 17P outboard propeller fits various Yamaha motor parts. Condition: used but in good condition and guaranteed to function properly...(June 19th, 2018)
• 0176349 Johnson Evinrude Cable Adapter Kit Outboard Motor Part Nos (36.9% similar) Please see included pictures. Item: cable adapter kit for johnson eventide outboard motors. Fits many motors...(July 27th, 2018)
• 0176458 176458 Johnson Evinrude Warning Horn Cable Kit Hp Outboard (30.8% similar) Condition: new old stock. May fit more engines. Part: warning horn cable kit hp fits various johnson eventide outboard motor parts...(September 29th, 2018)
• 0176573 176573 Johnson Evinrude Stainless Prop Outboard Propeller (34.1% similar) Please see included pictures. Condition: used but in good condition and guaranteed to function properly. Part: johnson eventide stainless prop x 19P outboard propeller fits various motor parts...(June 8th, 2018)