MAGNETI MARELLI S311B Moto Distributor 850-T3 17715450

( Brand: Magneti Marelli ), ( Manufacturer Part Number: S311B ), ( Part Type: Distributor ), ( Country Of Origin: Italy )

Review MAGNETI MARELLI Moto Distributor Complete And Original fits GUZZI

The Magneti Marelli S311B distributor is a crucial component in the ignition system of select Moto Guzzi motorcycles with the engine type 850-T3. This distributor is manufactured by Magneti Marelli, a renowned Italian automotive and motorcycle components supplier, ensuring top-notch quality and reliability.

The S311B distributor houses a rotor with seven vacuum-advance controlled ignition points. These ignition points are strategically positioned to ensure optimal spark delivery at various engine speeds, ensuring a smooth and efficient combustion process. The distributor cap, which is part of this assembly, is designed with a robust and durable material to withstand the harsh conditions of a motorcycle environment.

The distributor features a unique and innovative design, with the rotor and distributor cap being separated by a vacuum-operated mechanism. This design allows for efficient vacuum advance, which optimizes the ignition timing for improved engine performance. The distributor also includes a centrifugal advance mechanism, which adjusts the ignition timing based on engine speed for optimal power delivery and fuel efficiency.

The Magneti Marelli S311B distributor is an essential upgrade for any Moto Guzzi 850-T3 motorcycle owner seeking improved engine performance, reliability, and longevity. This high-performance distributor not only enhances the overall riding experience but also ensures that the engine operates at its peak efficiency, delivering optimal power and torque across the entire RPM range.

The S311B distributor is designed to be a direct replacement for the original equipment distributor. It is easy to install, requiring no modifications to the engine or wiring harness. The distributor comes with all necessary mounting hardware and gaskets, ensuring a seamless and hassle-free installation process.

In summary, the Magneti Marelli S311B distributor is a high-performance, vacuum-advance controlled ignition component designed for select Moto Guzzi 850-T3 motorcycles. Its innovative design, robust construction, and efficient ignition delivery make it an essential upgrade for any motorcycle enthusiast seeking improved engine performance, reliability, and longevity.

The Magneti Marelli S311B distributor is a crucial component of the ignition system in Moto Guzzi 850 T3 motorcycles. Here are some pros and cons that can help you make an informed decision about purchasing this part.

1. OEM Part: This distributor is an original equipment manufacturer (OEM) part, meaning it is made by the same company that originally manufactured it for the motorcycle. This ensures a perfect fit and optimal performance.

2. High-Quality Construction: Magneti Marelli is a reputable brand known for producing high-quality automotive components. This distributor is designed to last and provide reliable ignition.

3. Improved Performance: A faulty or failing distributor can cause poor engine performance. Replacing it with a new, functioning distributor can improve the overall performance of your Moto Guzzi 850 T3.

4. Long-Term Savings: While the upfront cost of an OEM distributor may be higher than aftermarket alternatives, the long-term savings can outweigh the initial investment. An OEM part is less likely to fail prematurely, resulting in fewer repairs and maintenance costs over time.

1. Price: The Magneti Marelli S311B distributor can be more expensive than aftermarket alternatives. This may be a significant consideration for some buyers.

2. Availability: Depending on the availability of stock, it may take some time to source and receive this part. If you need a quick repair, this could be a disadvantage.

3. Installation: Installing the distributor requires some mechanical knowledge and skills. If you are not confident in your ability to install the part yourself, you may need to pay for professional installation.

The Magneti Marelli S311B distributor is a high-quality, OEM part designed to provide optimal performance and reliability for your Moto Guzzi 850 T3. While the upfront cost may be higher than aftermarket alternatives, the long-term savings and improved performance may outweigh the initial investment. If you have the mechanical skills to install the part yourself or have access to a professional mechanic, this distributor is a worthwhile investment.

If you are experiencing issues with your Moto Guzzi 850 T3's ignition system, it is recommended that you consider replacing the distributor with a new, functioning OEM part, such as the Magneti Marelli S311B distributor. This will ensure optimal performance and reliability, ultimately saving you time and money in the long run.

Details:

Filthy exterior needs a blast of parts cleaner and wipe down as you can see. Appears to contain the original contact points. All the little detail pieces are here and everything appears to be in very good condition, wires connectors intact, screws good, insulators grommets felt pad cap is nice, drive gear looks shaft rotates normally, etc. Complete dual point distributor from a 1975 850-T3.

part #: s311b price

• $392.00

specifications motoralph:

• for models: Guzzi
• brand: Magneti Marelli
• mpn: S311b
• part type: Distributor
• country of origin: Italy

seller motoralph:

• # reviews: 580
• city: Evansville, Wisconsin
• rating: 100.0%

offer motoralph:

• sold: 0
• started: February 3, 2026
• availability: In Stock
• options: Ship-to-home
• best offers: True
• quantity: 1

returns motoralph:

• policy: No Returns

shipping motoralph:

• class: Economy, Standard
• type: Calculated
• service: UPS Ground Saver, USPS Ground Advantage
• carrier: UPS, USPS
• cost: $8.03
• transit: 6-10 Days

payments motoralph:

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

general motoralph:

• Motors > Parts Accessories > Other
• condition: Used

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